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Potential application of hydrophobically modified Welan gum as a novel thermo-salt tolerant EOR agent in high-temperature and high-salinity reservoirs 认领 引用
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作者 Jia Chen Zhao-Kai Wang +2 位作者 Wan-Lei Geng Hao-Ran Cheng Guang Zhao 《Petroleum Science》 SCIE EI CAS CSCD 2026年第5期2821-2832,共12页
Conventionalpolymeric systems face significant challengesin maintaining performance under hightemperature,high-salinity reservoir conditions due to limited thermal and saline stability.To address this critical limitat... Conventionalpolymeric systems face significant challengesin maintaining performance under hightemperature,high-salinity reservoir conditions due to limited thermal and saline stability.To address this critical limitation,a hydrophobically modified biopolymer(HWLG)was synthesized via etherification of Welan gum(WLG)with 1-bromooctadecane,introducing alkyl grafts to create hydrophobic microdomains.Comprehensivestructural characterization was performed using Fourier transform infrared spectroscopy(FT-IR),nuclear magnetic resonance spectroscopy(NMR),gel permeation chromatography(GPC),thermogravimetryanalysis(TGA),and scanning electron microscopy(SEM),confirmingsuccessful alkylincorporation.Rheological evaluations demonstrated HWLG's concentrationdependent pseudoplasticity,achieving a viscosity of 1423.2 mPa·s at4000 mg.L-1,which was about 3.4 times that of WLG at 70°C.The HWLG solution showed superior temperature and salt resistance in comparison with unmodified WLG,due to hydrophobic association-driven network formation.Particularly in formation water,HWLG showed a better long-term thermal stability,retaining 64.5%viscosity after aging50 d at 70°C,compared to WLG's 39.6%retention.Core flooding experiments validated HWLG's EOR efficacy,delivering 22.6%incremental oil recovery versus WLG's 13.7%,driven by enhanced mobility control.Theintegration of hydrophobic functionality endows HWLG with exceptional thermosaline stability,adsorption capacity,and viscoelasticity,positioning it as a robust candidate for hightemperature,high-salinity reservoir flooding applications. 展开更多
关键词 Hydrophobically modified biopolymer Welan gum Hydrophobic association Temperature and salt resistance Enhanced oil recovery
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Multifunctional carrier-free nanodrugs for enhanced delivery and efficacy of hydrophobic antitumor drugs 认领 引用 被引量：1
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作者 Zerong Pei Suyun Hu +4 位作者 Huimin Wei Liqin Ding Jingbo Liu Fengyun Li Hongyu Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期468-474,共7页
Poor solubility often results in low efficacy of antitumor drugs.Nevertheless,limited research has been conducted on the potential decrease in drug efficacy following the self-assembly of hydrophobic pure drugs into n... Poor solubility often results in low efficacy of antitumor drugs.Nevertheless,limited research has been conducted on the potential decrease in drug efficacy following the self-assembly of hydrophobic pure drugs into nanodrugs,and solutions to this problem are even rarer.Loading water-insoluble antitumor drugs into nanocarriers offers a promising solution.However,intricate carrier preparation,limited drug loading capacity,and carrier-associated safety remain key challenges.In this study,based on the discovery that hydrophobic gambogic acid(GA) self-assembles into nanostructures with diminished antitumor efficacy in aqueous environments,we developed a carrier-free nanodrug system,designated as GA-S-S-AS nanoparticles(NPs),characterized by straightforward preparation,high drug loading,fluorescence imaging,tumor-targeting,and responsive drug release in reducing environments.Specifically,the hydrophobic GA was covalently linked to the hydrophilic aptamer through a disulfide bond and then self-assembled into the nanodrugs.About 92 % of drug was encapsulated in self-assembled NPs,demonstrating remarkable stability under physiological conditions and controlled release of GA in the high-glutathione environment characteristic of tumor sites.Furthermore,by utilizing the synergistic interaction between the enhanced permeability and retention(EPR) effect and ligand-receptor active targeting mechanisms,the nanodrugs significantly increased the accumulation of GA at tumor locations.Consequently,the nanodrugs exhibited optimal therapeutic efficacy against the tumor both in vitro and in vivo,significantly inhibiting tumor growth.Furthermore,the nanodrugs demonstrated enhanced biosafety compared to free GA,effectively reducing GA-induced hepatotoxicity.Taken together,these findings underscore the significant potential of this multifunctional carrier-free nanodrugs for the targeted delivery of GA,thereby laying a foundation for future endeavors aimed at developing novel formulations of hydrophobic antitumor drugs. 展开更多
关键词 Hydrophobic antitumor drugs Carrier-free Nanodrug Self-assembly Aptamer Reducing environment
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Hydrophobic Pd/Al2O3 catalyst intensified nitrobenzene hydrogenation in flow 认领 引用
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作者 Hongda Zhang Jinyan Hu +3 位作者 Shuting Bao Shichao Su Weiyao Yang Le Sang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第6期92-101,共10页
Designing efficient catalysts and solvent system for the multiphase hydrogenation reaction is vital in continuous flow reactors.Herein,we prepare hydrophilic Pd/Al2O3and hydrophobic modified C12PA‑Pd/Al2O_... Designing efficient catalysts and solvent system for the multiphase hydrogenation reaction is vital in continuous flow reactors.Herein,we prepare hydrophilic Pd/Al2O3and hydrophobic modified C12PA‑Pd/Al2O3catalyst for nitrobenzene(NB)hydrogenation in micropacked bed reactors(μPBRs).By tuning the methanol‑water volume ratio,reaction temperature,reaction pressure,liquid and gas superficial velocity,the NB conversion and aniline(AN)yield are optimized.The highest NB conversion of 97.1%and AN yield 95.6%are obtained inμPBRs with hydrophobic C12PA‑Pd/Al2O3at the reaction temperature of 90℃.The apparent kinetic model is developed inμPBRs with two types of catalysts,and activity energies of NB hydrogenation for Pd/Al2O3and C12PA‑Pd/Al2O3are 7.944 kJ·mol-1and 3.372 kJ·mol-1,respectively.It indicates that the catalytic efficiency of C12PA‑Pd/Al2O3is better than that of Pd/Al2O3in the methanol‑water mixed solvent inμPBRs.The value of TOF for the hydrophobic modified C12PA‑Pd/Al2O3catalyst is twice compared with the hydrophilic Pd/Al2O3catalyst.The value of STY forμPBRs is higher than that of stirred tank reactors(STRs)and fixed bed reactors(FBRs). 展开更多
关键词 μPBRs Hydrogenation Hydrophobic catalyst Mixed solvent
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Atomic Insight into Durability and Interfacial Stability of Novel Hydrophobic Composite in Concrete Alkaline Environment for Marine Engineering 认领 引用
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作者 Ao Zhou Kexuan Li +2 位作者 Zechuan Yu Guangzhao Yang Tiejun Liu 《Engineering》 SCIE EI CSCD 2026年第6期196-210,共15页
The integrity of organic–inorganic interface determines the performance of composite material systems,such as concrete reinforced with basalt fiber reinforced polymer.The integrity of the interface,which depends on t... The integrity of organic–inorganic interface determines the performance of composite material systems,such as concrete reinforced with basalt fiber reinforced polymer.The integrity of the interface,which depends on the epoxy resin,may be degraded in harsh environments such as in seawater and concrete alkaline environments.In this study,a novel resin cross-linked with polydimethylsiloxane(PDMS)was developed to enhance the performance of composite material in harsh environments.The long-term mechanical strength of the composite(after modification to enhance its hydrophobicity)increased by 20%in concrete alkaline environments,based on micro-and macro-experiments.This improvement is attributed to cross-linking between PDMS and epoxy molecules and the formation of PDMS phase-separated circular domains,which achieve dynamic equilibrium and simultaneously enhance the densi-fication and hydrophobicity.Molecular dynamics simulations revealed that PDMS reinforces interface adhesion and significantly improves the corrosion resistance by facilitating covalent bond formation at the resin–fiber and even resin–concrete interfaces.This study provides a feasible strategy and atomic insights for durability enhancement of composite with similar organic–inorganic interfaces in concrete structures,thus advancing the safety and service life in marine engineering. 展开更多
关键词 Polydimethylsiloxane Hydrophobic modification Concrete alkaline environment Degradation mechanism
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Enhanced plasma-catalytic steam reforming of methane to methanol on a hydrophobically modified Cu/silicalite-1 catalyst 认领 引用
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作者 Shengyan Meng Junze Li +5 位作者 Mengjun Shen Xinhao Shi Yuxin Chen Dezheng Yang Yanhui Yi Zhaolun Cui 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第5期320-329,共10页
The direct conversion of methane(CH4)to methanol(CH3OH)under mild conditions remains a formidable challenge in heterogeneous catalysis.Non-thermal plasma(NTP)offers a promising route for one-step steam reforming... The direct conversion of methane(CH4)to methanol(CH3OH)under mild conditions remains a formidable challenge in heterogeneous catalysis.Non-thermal plasma(NTP)offers a promising route for one-step steam reforming of methane to methanol(OSRMtM),but water often causes competitive adsorption and product inhibition on conventional hydrophilic catalysts,constraining efficiency and stability.Herein,we demonstrate an interfacial engineering strategy by transforming a hydrophilic Cu/silicalite(Cu/S-1)catalyst into a hydrophobic catalyst(Cu/m-S-1)via surface silylation.Under optimized conditions,the hydrophobic Cu/m-S-1 catalyst exhibits superior performance,achieving a CH4conversion of 6.7%and a CH3OH selectivity of 53.6%,significantly surpassing its hydrophilic counterpart(5.2%conversion,40.0%selectivity).Concurrently,the energy consumption for CH3OH synthesis was substantially reduced from 367 to 61 kJ·mmol-1.Most importantly,the hydrophobic catalyst demonstrates exceptional stability over 24 h of continuous operation and robust reusability over consecutive cycles,overcoming the pronounced deactivation of the hydrophilic catalyst.Plasma diagnostics combined with density functional theory(DFT)calculations reveal that catalyst incorporation enhances discharge intensity and high-energy electron density,while verifying the reaction pathway mediated by Cu+active sites and plasma-generated radicals.This study establishes that surface hydrophobization is a pivotal strategy for enhancing plasma-catalytic OSRMtM performance through precise interfacial microenvironment control,providing a universal design paradigm for sustainable chemical synthesis in water-involved catalytic systems. 展开更多
关键词 Plasma catalysis Methane to methanol Hydrophobic modification Interfacial engineering Cu/silicalite-1
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Hydrophobic neutral dissolved organic matter:First insights into compositional changes and formation of disinfection by-products induced by rainfall and degradation 认领 引用
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作者 Hang Vo-Minh Nguyen Hye-bin Lim +1 位作者 Jin Hur Hyun-Sang Shin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第3期307-319,共13页
This study examined the structural characteristics of dissolved organic matter(DOM)in bulk river samples and their fractionations(isolated using SupeliteT MDAX-8 resin)under rainfall conditions,as well as two primary ... This study examined the structural characteristics of dissolved organic matter(DOM)in bulk river samples and their fractionations(isolated using SupeliteT MDAX-8 resin)under rainfall conditions,as well as two primary degradation processes:biodegradation and photodegradation.Compared to bulk samples,DAX-8 resin fractionations provided more detailed insights into structural changes in DOM influenced by rainfall and subsequent degradation.Rainfall was found to increase the proportions of hydrophilic(Hi)and hydrophobic-neutral(HoN)fractions.Notably,this study is the first to confirm that HoN consistently exhibits lower specific ultraviolet absorbance,humification index,fulvic-and humic-like compounds,and smaller molecular sizes of humic substances(1–20 kDa)across all conditions.Disinfection by-product(DBP)experiments showed that HoN primarily contained precursors for trihalomethane formation,while the formation of haloacetic acids and haloacetonitrile was closely related to Hi and hydrophobic acid fractions.Principal component analysis revealed that HoN was associated with elevated levels of tyrosine and tryptophan,as well as organic compounds in the 300–500 Da range,which contributed more significantly to trihalomethane formation than to haloacetic acids and haloacetonitriles.Although the characteristics of the DAX fractions were distinct,there were minimal differences between rainfall and subsequent biodegradation or photodegradation.This study is the first to characterize HoN and its role in the formation of DBP.As HoN became the dominant fraction after degradation processes,these findings provide important insights into water management and supply practices. 展开更多
关键词 Biodegradation Dissolved organic matter Fluorescence Hydrophobic neutral Photodegradation Rainfall
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Stability enhancement of MnOx-CeO2via hydrophobic modification for NO reduction by NH3 认领 引用
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作者 Boyu Wu Shengen Zhang +2 位作者 Shengyang Zhang Bo Liu Bolin Zhang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第1期357-368,共12页
MnOx-CeO2catalysts for the low-temperature selective catalytic reduction(SCR)of NO remain vulnerable to water and sulfur poisoning,limting their practical applications.Herein,we report a hydrophobic-modified MnO... MnOx-CeO2catalysts for the low-temperature selective catalytic reduction(SCR)of NO remain vulnerable to water and sulfur poisoning,limting their practical applications.Herein,we report a hydrophobic-modified MnOx-CeO2catalyst that achieves enhanced NO conversion rate and stability under harsh conditions.The catalyst was synthesized by decorating MnOx crystals with amorphous CeO2,followed by loading hydrophobic silica on the external surfaces.The hydrophobic silica allowed the adsorption of NH3and NO and diffusion of H,suppressed the adsorption of H2O,and prevented SO2interaction with the Mn active sites,achieving selective molecular discrimination at the catalyst surface.At 120℃,under H2O and SO2exposure,the optimal hydrophobic catalyst maintains 82%NO conversion rate compared with 69%for the unmodified catalyst.The average adsorption energies of NH3,H2O,and SO2decreased by 0.05,0.43,and 0.52 eV,respectively.The NO reduction pathway follows the Eley-Rideal mechanism,NH3*+*→NH2*+H*followed by NH2*+NO*→N2*+H2O*,with NH3dehydrogenation being the rate determining step.Hydrophobic modification increased the activation energy for H atom transfer,leading to a minor decrease in the NO conversion rate at 120℃.This work demonstrates a viable strategy for developing robust NH3-S CR catalysts capable of efficient operation in water-and sulfur-rich environments. 展开更多
关键词 Mn-Ce catalyst NH3-SCR hydrophobic modification enhanced stability
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Cementing and film-forming hydrophobic drilling fluid technology for long horizontal wells in deep coal-rock gas reservoirs 认领 引用
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作者 SUN Jinsheng LIU Hongtao +8 位作者 HAN Jinliang ZHAO Li HAO Pengcheng ZHANG Shangkun PENG Chao LONG Yifu LIU Fan HUANG Xianbin JIN Jiafeng 《Petroleum Exploration and Development》 SCIE 2026年第3期864-874,共11页
Through a systematic analysis of the physical properties of coal and gangue,including microscopic pore structure,surface wettability and mechanical strength,the mechanism of borehole wall collapse in deep coal formati... Through a systematic analysis of the physical properties of coal and gangue,including microscopic pore structure,surface wettability and mechanical strength,the mechanism of borehole wall collapse in deep coal formations was revealed.Based on this understanding,a wellbore-stabilizing drilling fluid concept was proposed,featuring high-efficiency plugging of medium and large pores and fractures+cementation and film-formation in micro and small pores and fractures+overall surface hydrophobic inhibition.An adaptive plugging agent and a cementing film-forming hydrophobic inhibitor were developed,and a cementing,wall-strengthening,film-forming,and hydrophobic drilling fluid system was established.The adaptive plugging agent consists of organic-inorganic hybrid polymer microspheres,which enables self-adaptive plugging of pores and micro-fractures in coal rock through flexible deformation,effectively preventing direct contact between the drilling fluid and medium-to-large pore-fracture systems in the formation.The cementing film-forming hydrophobic inhibitor contains strong adsorption groups and hydrophobic groups,which provides both cementing reinforcement and dense film-forming functions,significantly enhancing the overall structural strength of coal rock,greatly reducing surface hydrophilicity,and inhibiting hydration swelling of clay minerals.The developed drilling fluid system exhibits favorable rheological behavior,filtration-control performance and lubricity.It can substantially improve the compressive strength of rock samples and markedly reduce their linear expansion rate.Field application results demonstrate that the system delivers excellent anti-collapse,cuttings-carrying and lubrication performance,with outstanding wellbore stabilization effectiveness. 展开更多
关键词 deep coal-rock gas water-based drilling fluid borehole-wall collapsing adaptive plugging cementation and film-formation hydrophobic inhibition wellbore stability
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The discovery of acyl thiourea derivatives as potent hydrophobic tagging degraders targeting SIRT2 for the treatment of ovarian cancer 认领 引用
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作者 Dandan Wang Xiaoyu Ma +9 位作者 Yijin Zhao Wenting Zou Hua Wang Yang Gao Shimeng Wan Jian Ni Lilan Xin Hai-Bing Zhou Hongbing Cai Chune Dong 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期560-566,共7页
Sirtuin 2(SIRT2)is one of the key members of sirtuins family that plays important role in regulating many physiological processes.Recent evidences have revealed that SIRT2 is associated with the development,progressio... Sirtuin 2(SIRT2)is one of the key members of sirtuins family that plays important role in regulating many physiological processes.Recent evidences have revealed that SIRT2 is associated with the development,progression and metastasis of ovarian cancer.In this study,guided by an in-depth analysis of the clinical characteristics of the expression pattern of SIRT2 in ovarian cancer patients,the first SIRT2-targeted hydrophobic tagging(HyT)degraders have been developed.These acyl thiourea degraders exhibited remarkable anti-proliferative activity in several ovarian cancer cells.Among them,the most effective compoundⅡ-6 exhibited excellent anti-tumor activity both in vitro and in vivo(half maximal inhibitory concentration(IC50)=0.002±0.001μmol/L).In addition,Ⅱ-6 was found to effectively suppress cancer cell proliferation and migration,as well as cell cycle arrest and apoptosis.Moreover,further investigation revealed that compoundⅡ-6 indirectly induced DNA damage through the H4K20me2/53BP1 pathway by degradation of SIRT2.The study not only exemplifies the advantage of the novel HyT degradation strategy but also prove the great potential of SIRT2 as a promising target for drug development of ovarian cancer. 展开更多
关键词 Ovarian cancer Hydrophobic tagging degraders Sirtuin 2 Acyl thioureas Anti-tumor activity Degradation
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Polybenzimidazole anionic exchange membrane with hydrophobic clusters for efficient electrochemical CO2reduction 认领 引用
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作者 Zuyu Li Pingxia Zhang +3 位作者 Min He Lihua Wang Zhi Qiu Yanbin Yun 《Green Energy & Environment》 SCIE EI CAS CSCD 2026年第5期1349-1361,共13页
Specific anion exchange membranes(AEMs)are vital to highly efficient electrochemical CO2reduction(ECR),which is a promising choice for carbon neutrality.However,the unexpected trade-off effect originating from the ... Specific anion exchange membranes(AEMs)are vital to highly efficient electrochemical CO2reduction(ECR),which is a promising choice for carbon neutrality.However,the unexpected trade-off effect originating from the ion conductivity and the hydrogen evolution reaction(HER)is still a great challenge.Herein,AEMs with hydrophobic clusters distribution in hydrophilic domain were designed and prepared by special ternary-polymerization polybenzimidazole(TP-PBI).The hydrophilic domain contributed to high ionic conductivity and dispersed hydrophobic clusters inhibited the membrane swelling and consequently the HER.As a result,an increase of 157%was achieved in ionic conductivity compared with that of OPBI and the prepared TP-PBI membranes exhibit CO Faradaic efficiency(FEco)as high as 96.2%,outstanding in situ durability for 24 h at 100 mA cm-2.Such TP-PBI membranes throw new light on the development of AEMs for highly efficient ECR. 展开更多
关键词 Ternary-polymerization polybenzimidazole Hydrophobic fluorine clusters Anion exchange membrane Electrochemical CO2reduction
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Multifunctional hydrophobic/superhydrophobic protective coatings for magnesium alloys:A review on material design,protection mechanisms,and engineering applications 认领 引用
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作者 Qing Xiang Jingxiong Zeng Bo Qiao 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第4期92-117,共26页
Magnesium(Mg)alloys have broad application prospects in transportation,biomedical engineering,and marine engineering owing to their low density,high specific strength,and excellent processing properties.However,their ... Magnesium(Mg)alloys have broad application prospects in transportation,biomedical engineering,and marine engineering owing to their low density,high specific strength,and excellent processing properties.However,their inherent susceptibility to corrosion and insufficient service stability urgently necessitate the development of advanced protective coating technologies.Functional hydrophobic and superhydrophobic coatings are designed by constructing special wetting interfaces that combine micro-anostructures with low-surface-energy materials.These coatings not only significantly delay the penetration of corrosive media but also integrate multiple functionalities,such as antibacterial activity,self-healing,anti-icing,antifouling,photocatalysis,and electrical conductivity,thereby realizing a transition from passive isolation to active protection.This review systematically summarizes the material systems,structural design strategies,protection mechanisms,representative fabrication methods,and recent progress in the application of functional hydrophobic/superhydrophobic coatings for Mg alloys.Particular attention is devoted to the synergistic relationships among surface roughness,porosity,surface energy,and durability,as well as to defect evolution and failure modes under multifield coupled environments.Addressing current bottlenecks,including the lack of fluorine-free alternatives,insufficient multifunctional integration,complex fabrication processes,and limited long-term service stability,the article highlights future research directions such as green alternative materials,multifunctional modular integration,bioinspired interface reinforcement,and intelligent responsive protection systems.Collectively,these insights provide theoretical foundations and technical pathways toward achieving long-term,reliable protection and advancing the practical engineering applications of hydrophobic/superhydrophobic coatings on Mg alloys under complex service environments. 展开更多
关键词 Mg alloys Hydrophobic/superHydrophobic coatings Corrosion protection Multifunctional coatings Surface engineering
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Atomic-layer-deposited hydrophobic-zincophilic Pd/g-C3N4 coating for ultra-stable aqueous Zn batteries 认领 引用 被引量：1
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作者 Ziying Shi Huimin Sang +3 位作者 Shaobo Li Feng Yuan Xianghong Liu Jun Zhang 《ENGINEERING Energy》 SCIE EI CAS CSCD 2026年第3期133-143,共11页
Aqueous zinc-ion batteries(AZIBs)have emerged as promising candidates for large-scale energy storage systems in the post-lithium era,owing to their inherent safety and cost-effectiveness.However,their practical implem... Aqueous zinc-ion batteries(AZIBs)have emerged as promising candidates for large-scale energy storage systems in the post-lithium era,owing to their inherent safety and cost-effectiveness.However,their practical implementation faces significant challenges,including chemical corrosion,uncontrolled dendrite formation,and hydrogen evolution reactions(HER).To address these limitations,an innovative“hydrophobic-zincophilic”Pd/g-C3N4 composite coating was developed for Zn anodes by atomic-layer-deposition(ALD).The g-C3N4 matrix serves as an ion flux regulator,while uniformly dispersed Pd nanoparticles function as zincophilic nucleation sites,enabling homogeneous Zn deposition.In situ optical characterization demonstrates the coating’s dual functionality:the hydrophobic component effectively minimizes water contact,while the zincophilic phase guides ordered Zn plating,jointly suppressing parasitic reactions.The modified Pd/g-C3N4@Zn anode achieves exceptional cycling stability(>2500 h)and maintains a remarkable Coulombic efficiency of 99.56%over 5000 cycles at 2 A/g,representing a significant advancement in AZIB anode engineering.This work provides a generalizable interfacial design strategy for developing high-performance AZIB systems. 展开更多
关键词 Zn anode g-C3N4 atomic layer deposition hydrophobic zincophilic In-situ optical observation
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Simultaneous Construction of Hydrophobic Environment and Optimized Ion Channels in V2O5for Zinc Ion Batteries 认领 引用
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作者 Leilei Sun Hanwei Hu +9 位作者 Guosheng Duan Bin Luo Sinan Zheng Zhean Bao Dinghao Chen Maojun Zhou Kun Zhang Yang Wang Jingyun Huang Zhizhen Ye 《Carbon Energy》 SCIE EI CAS CSCD 2026年第5期201-211,共11页
Vanadium-based oxides are commonly used as cathode materials for aqueous zinc ion batteries(AZIBs),offering the advantages of open crystalline structure and high theoretical capacity.However,vanadium-based oxides are ... Vanadium-based oxides are commonly used as cathode materials for aqueous zinc ion batteries(AZIBs),offering the advantages of open crystalline structure and high theoretical capacity.However,vanadium-based oxides are limited in further application development by poor structural stability and uncontrollable dissolution.Here,the hexamethylenediammonium(HMA2+)preintercalated V2O5cathode(HVOH)is constructed to enhance the comprehensive performance of AZIBs.In terms of active material stability,the lamellar structure is stabilized with the existence of interlayer pillar HMA2+,and the cathodic hydrophobicity is enhanced by long alkyl chains to inhibit vanadium dissolution and water-related side reactions.Besides,the interlayer spacing(13Å)is widened,and new active sites are introduced due to the preintercalated HMA2+,realizing higher capacity performance.Specifically,the insertion of ions into the low-voltage area is significantly increased.The electrostatic interaction between the V2O5layer and Zn2+is weakened thanks to the positive electrical properties of HMA2+.Thus,accelerated diffusion rates and electrochemical kinetics are obtained.As a result,the assembled Zn||Zn(CF3SO3)2||HVOH cell obtains a high specific capacity of 431.7 mAh g-1at 0.2 A g-1and achieves an improved cycling performance at 10 A g-1(137.5 mAh g-1after 3000 cycles).This strategy provides a perspective for the optimization of layered vanadium oxides by organic cationic preintercalation. 展开更多
关键词 cathodes hydrophobic functional groups preintercalation vanadium oxides zinc ion batteries
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Hydrophobic protective layer with ultra-long carbon chain for high-performance aqueous zinc ion batteries 认领 引用
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作者 Renming Liu Ze Gao +3 位作者 Linglong Hu Daming Yang Ming Feng Dan Luo 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第2期545-550,共6页
The formation of Zn dendrites and the occurrence of the hydrogen evolution reaction(HER)at Zn anodes represent two major obstacles that significantly impede the widespread commercialization of aqueous Zn-ion batteries... The formation of Zn dendrites and the occurrence of the hydrogen evolution reaction(HER)at Zn anodes represent two major obstacles that significantly impede the widespread commercialization of aqueous Zn-ion batteries.In this work,we propose sorbitan oleate(Span 80)as a novel amphiphilic electrolyte additive for 2 mol/L ZnSO4,demonstrating multifunctional performance.The unique ultra-long hydrophobic carbon chains of Span 80 effectively reduce free water molecules at the Zn anode-electrolyte interface,forming a robust hydrophobic interfacial layer that significantly suppresses HER and corrosion reactions.Simultaneously,carbon chains can enhance the desolvation effect of[Zn(H2O)6]2+,leading to improve rate performance.Additionally,the hydrophilic sorbitan groups in Span 80 selectively adsorb onto active sites of the Zn anode,promoting uniform Zn2+deposition and suppressing dendrite growth.The optimized Zn||Zn symmetric cell exhibits outstanding cycling stability,sustaining reversible plating/stripping for 570 h at 50 mA/cm2 and the Zn||V2O5 full cell retains exceptional stability over 2000 cycles at 1 A/g.Our work presents a promising strategy for suppressing interfacial side reactions by constructing a hydrophobic protective layer through the use of ultra-long carbon chain surfactants.This approach offers new insights into enhancing the performance of aqueous Zn-ion batteries. 展开更多
关键词 Aqueous Zn-ion batteries Zn anode Electrolyte Nonionic surfactants Hydrophobic protective layer
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Enhanced structural coloration and thermal management via hydrophobic force-driven colloidal photonic crystals 认领 引用
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作者 Xiaoqing Yu Jie Ren +6 位作者 Nianxiang Zhang Zirong Li Kebing Chen Jiazhuang Guo Su Chen Guoxing Li Chang Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期671-677,共7页
Developing passive cooling materials with dual functionality of high-performance thermal management and aesthetic appeal remains a critical challenge for sustainable development.Here,we present a hydrophobic force-dri... Developing passive cooling materials with dual functionality of high-performance thermal management and aesthetic appeal remains a critical challenge for sustainable development.Here,we present a hydrophobic force-driven assembly strategy to construct crack-free colloidal photonic crystals(CPCs)for colored passive daytime cooling(PDC)textiles.Monodispersed poly(styrene-hydroxy propyl acrylatehexafluorobutyl methacrylate)(P(St-HPA-HFBMA))colloidal particles with low surface energy(9 mN/m)and high monodispersity(PDI<0.05)are synthesized via soap-free emulsion polymerization.The hexafluorobutyl terminal groups(-C3F6)enable robust hydrophobicity(water contact angle:124°),facilitating crack-free CPC assembly through hydrophobic driving force.By integrating the CPCs with SiO2aerogelembedded polyethylene oxide(PEO/SiO2aerogel)fiber scaffold based on microfluidic spinning technology,a colored hybrid composite film is fabricated,achieving 0.76 solar reflectance and 0.84 thermal emissivity in the atmospheric window(8-13μm).Outdoor evaluations demonstrate a sub-ambient cooling temperature of 4.1℃under 732 W/m2solar intensity,reaching the desirable level of PDC materials.The hybrid composite film also exhibits angle-independent structural colors,mechanical robustness(tensile strength:1.86 MPa),and scalable manufacturability.This work provides a paradigm for multifunctional PDC systems combining aesthetic versatility with sustainable cooling performance. 展开更多
关键词 Hydrophobic driving force Colloidal photonic crystals Structural color Fiber scaffold Passive daytime cooling
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Hydrophobic Eutectic Solvent-Engineered Membranes for Highly Permeable, Selective, and Antifouling Pharmaceutical Removal from Municipal Wastewater 认领 引用
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作者 Anjali Goyal Tarek Lemaoui +6 位作者 Mahendra Kumar Ahmad S.Darwish Ali Zerriouh Fawzi Banat Hassan A.Arafat Shadi W.Hasan Inas M.AlNashef 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2026年第3期93-114,共22页
Persistent pharmaceutical pollutants present a critical challenge for water remediation,often forcing a trade-off between permeability,selectivity,and fouling resistance.This study resolves this trilemma through the m... Persistent pharmaceutical pollutants present a critical challenge for water remediation,often forcing a trade-off between permeability,selectivity,and fouling resistance.This study resolves this trilemma through the molecular-level integration of hydrophobic deep eutectic solvents(HDES)into ultrafiltration membranes,establishing a filler-free platform for advanced separations.The optimized polyethersulfone matrix,tailored with 5 wt.%tetrabutylammonium bromide:octanoic acid,achieved a sixfold increase in pure-water flux(7.3 L m⁻²h⁻¹)while maintaining 95%tetracycline and 86%diclofenac rejection.The membrane performance was also validated with authentic municipal wastewater from Abu Dhabi,where the membrane removed>86%of bulk organics and pharmaceuticals,surpassing EU Directive 2024/3019 requirements.Exceptional stability was also demonstrated with an 89%flux recovery ratio.Moreover,integrated density functional theory calculations and molecular dynamics simulations revealed that HDES nanodomains electronically“soften”the polymer matrix(reducing chemical hardness to 1.604 eV)to lower water transport barriers while simultaneously doubling pollutant binding energies via cooperative hydrogen bonding and cation-π interactions.This scalable,low-energy approach(≈0.12-0.16 kWh m⁻³)offers a robust,regulation-ready solution for next-generation environmental materials. 展开更多
关键词 hydrophobic deep eutectic solvent municipal wastewater pharmaceutical pollutants ultrafiltration membranes
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Enhanced Mechanical Properties and Prolonged Recovery Onset Period of Timed Shape Memory Hydrogels via Hydrophobic Interaction 认领 引用
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作者 Xiao-Ting Jia Yi-Ting Sun +1 位作者 Chu-Jun Ni Qian Zhao 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第7期2043-2050,共8页
Shape memory behavior with programmable recovery onset have been discovered very recently in poly(acrylic acid)hydrogels crosslinked by calcium ions.Their ability to undergo apparent autonomous and timed shape transfo... Shape memory behavior with programmable recovery onset have been discovered very recently in poly(acrylic acid)hydrogels crosslinked by calcium ions.Their ability to undergo apparent autonomous and timed shape transformation,governed by thermal-sensitive phase evolution,has attracted growing interests particularly for the development of trigger-free biomedical devices.While copolymerization with various monomers can introduce multifunctional properties,this strategy often compromises the phase-separated microstructure and shortens the recovery onset period.Here we introduce hydrophobic acrylate comonomers with different lengths of aliphatic chains to investigate various properties of the copolymerized hydrogels.Upon the same comonomer weight percentage of 20 wt%,short alkyl chains disrupt the polymer aggregation and disable the timed recovery.In contrast,longer alkyl chains form hydrophobic domains which enhance the mechanical properties of the hydrogel and prolong the onset time.Quantitatively,the copolymer hydrogel provided excellent tensile strength of 5.25 MPa and maximum onset period of strikingly 800 min,which are respectively 16.7 and 35 times than the homopolymer hydrogel.This work advances the understanding of the hydrogel system with programmable recovery onset and provides a promising molecular modulation strategy for functionalization of hydrogels with responsive phase separation behavior. 展开更多
关键词 Shape memory hydrogel Trigger-free transformation Hydrophobic acrylate Phase separation Mechanical properties
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Enhanced combustion and hydrophobic performance of aluminum micro-particles coated with high-energy fluorine-containing materials 认领 引用
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作者 Tingting Ma Junjian Xie +4 位作者 Hui Li Kaixin Wei Zhibin Xu Zihui Meng Xiu-tian-feng E 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期361-371,共11页
Fluorine-containing compounds have proven to be effective coating materials for enhancing the combustion efficiencyof aluminum micro-particles(Al MPs).However,these compounds are usually lowenergy polymeric materials,... Fluorine-containing compounds have proven to be effective coating materials for enhancing the combustion efficiencyof aluminum micro-particles(Al MPs).However,these compounds are usually lowenergy polymeric materials,which may inevitably diminish the overall energy density of propellants or explosives.This study introduces a two-step coating strategy using fluorinatedenergetic smallmolecule 2-NCF to coat Al MPs,employing FeCl3 as an intermediate layer.Compared to pristine Al MPs,2-NCF coated Al MPs can reduce the ignition delay from 36 ms to 3 ms and shorten the time to maximum flamearea from 551 ms to 114 ms,accompanied by intensifiedsparking combustion.Thermal analyses demonstrate that the energetic 2-NCF induces localized micro-explosions to disrupt the alumina shell,and the fluorinatedsegments produced by 2-NCF react with the aluminum,followed byβ-AlF3 toα-AlF3 phase evolution,which sustains oxygen penetration for complete aluminum core oxidation to release more energy.The 2-NCF coating concurrently enhances hydrophobicity of Al MPs,elevating contact angles from 0°to 120°.This coating can effectively block water penetration and prevent hydrolysis of the inner aluminum during long storage.This work demonstrates the potential of 2-NCF as an excellent high-energetic coating material to enhance the combustion and hydrophobic performance of aluminum powder. 展开更多
关键词 Aluminum micro-particles Fluorinated energetic small-molecule Surface coating Ignition Combustion Hydrophobicity
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Multifunctional CEOS-DOPO-PDMS Modified Epoxy NP-GLIDE Coatings with Improved Combustion Behavior, Hydrophobicity, and Abrasion Resistance 认领 引用
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作者 Guoguan Wu Baipei Liu +7 位作者 Dawei Jiang Haorui Yu Jiayu Fu Chengze Yu Hanbin Wang Miaojun Xu Zijian Wu Bin Li 《Journal of Polymer Materials》 SCIE CAS 2026年第1期183-199,共17页
Epoxy resins are extensively employed in the construction,electronics,automotive,and aerospace industries owing to their outstandingmechanical strength,chemical resistance,and electrical insulation.However,their intri... Epoxy resins are extensively employed in the construction,electronics,automotive,and aerospace industries owing to their outstandingmechanical strength,chemical resistance,and electrical insulation.However,their intrinsic flammability,poor wear resistance,and hydrophilicity significantly restrict broader applications.To address these challenges,a novel multifunctional coating(CEOS-DOPO-PDMS)has been designed and fabricated via an NPGLIDE approach.The system integrates 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO)as a reactive phosphorus-based flame retardant,epoxy-terminated polydimethylsiloxane(EP-PDMS)as a hydrophobic segment,and cycloaliphatic epoxy-functionalized oligosiloxanes(CEOS)as a cross-linking co-reactant.The resulting CEOSDOPO-PDMS hybrid precursor was blended with bisphenol A diglycidyl ether(DGEBA)in N-methyl-2-pyrrolidone(NMP)and subsequently cured to form epoxy-based NP-GLIDE coatings.The optimized coating exhibits superior integrated performance,including high hydrophobicity(water contact angle up to 109.6°),outstanding abrasion resistance(5H pencil hardness),and excellent flame retardancy(resisting combustion at 500℃ for 30 s).These enhancements originate from the cooperative effects of the Si-O-Si framework,low-surface-energy PDMS chains,and phosphorus-containing DOPOmoieties,which together provide stable thermal protection,surface roughness-induced hydrophobicity,and durable mechanical integrity.An effective strategy for constructing multifunctional epoxy-based coatingswith simultaneously enhanced flame retardancy,wear resistance,andwater repellency is presented.The CEOSDOPO-PDMS system holds great promise for advanced protective applications in construction,transportation,and aerospace engineering. 展开更多
关键词 NP-GLIDE epoxy resin flame retardant abrasion resistance hydrophobic coating
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Design and performance of a multifunctional coating with magnesium-philic and hydrophobic properties on the surface of magnesium battery anodes 认领 引用
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作者 Wenzi Huang Bowen Lin +4 位作者 Yanbinhui Zhang Yueping Wei Wei Shang Jiqiong Jiang Yuqing Wen 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第7期524-539,共16页
Magnesium metal batteries are promising for next-generation energy storage due to their high energy density and low cost.However,in aqueous electrolytes,the formation of a passivation layer on the magnesium surface—h... Magnesium metal batteries are promising for next-generation energy storage due to their high energy density and low cost.However,in aqueous electrolytes,the formation of a passivation layer on the magnesium surface—hindering ion conduction—remains a major challenge.This study proposes a two-step method to prepare a multifunctional Sn@MXene interface protective layer with strong magnesium affinity and high hydrophobicity.The Sn@MXene layer was applied to magnesium metal batteries to improve performance.Results show that its strong hydrophobicity(contact angle of 132°)prevents direct contact between the aqueous electrolyte and the magnesium anode,effectively reducing side reactions such as hydrogen evolution and corrosion.In the symmetrical cell configuration,the Sn@MXene coating effectively suppresses passivation on the magnesium surface and significantly reduces interfacial charge-transfer resistance,leading to improved cycling stability and longer discharge duration.In full cell tests,the coating greatly reduces voltage hysteresis and battery impedance while extending the discharge plateau.Long-term cycling tests further confirm its ability to enhance charge-discharge stability.DFT calculations show that Sn nanoparticles enable uniform magnesium ion deposition,while Ti3C2Cl2 lowers the reaction kinetic barrier on the anode surface.This enhances both ion deposition/stripping and reaction kinetics,significantly improving the electrochemical performance of magnesium batteries. 展开更多
关键词 Magnesium metal battery Sn@MXene Multifunctional coating Hydrophobicity Negative electrode interface
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