期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到1,379篇文章
< 1 2 … 69 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Influence of precipitant on morphologies and luminescence properties of CuAlS2 nanoparticles 认领 引用 被引量：1
1
作者 ZHAO Pu-Qin ZHU Shi-Qing XUE Hong-Tao 《原子与分子物理学报》 CAS 北大核心 2026年第3期85-91,共7页
In this paper,CuAlS2nanoparticles are prepared by colloidal route,and the precipitant method is used during the sample purification process.The selected precipitants are methanol plus acetone and methanol plus etha... In this paper,CuAlS2nanoparticles are prepared by colloidal route,and the precipitant method is used during the sample purification process.The selected precipitants are methanol plus acetone and methanol plus ethanol,in which the steps of the precipitation process are exactly the same.The experimental results reveal that the morphology and luminescence characteristics of the samples change significantly after treatment with different precipitants:after precipitating the samples with methanol first,then acetone,the samples are in the form of nano-flakes,and the excitation spectrum is characterized by the presence of an excitation peak at around275 nm.and the PL spectral measurements indicate that the luminescence peak is located near 407 nm,and its Stokes shift is about 1.47 eV;while,after treating the samples with methanol first,then ethanol,the samples are in the form of nanorods,the excitation spectra show two excitation peaks around278 nm and283 nm,and the main peak of luminescence has a blue shift of about 100 nm compared to the acetone-treated sample,with a Stokes shift of 0.435 eV,such a distinction may be due to the difference in polarity between ethanol and acetone.This study reveals that the precipitating agent has an important influence on the properties of the samples treated,which is very instructive for nanomaterial purification studies and related experimental teaching explorations. 展开更多
关键词 CuAlS2nanoparticle Characteristics of luminescence Precipitant Stokes shift
暂未订购 下载PDF
Dual redox-responsive CO2-generating nanoparticles assembled from one-step synthesized L-cystine-based biodegradable polymers for enhanced chemotherapy of tumors 认领 引用
2
作者 Ruhe Zhang Dandan Li +5 位作者 Ting Liang Xinyu Zhang Jingyi Hou Yang Kang Dongjun Lin Jun Wu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第7期559-563,共5页
Among various smart drug delivery systems(DDSs),redox-responsive systems have emerged as promising platforms for tumor therapy.Herein,we successfully fabricated a tumor microenvironment dual redoxresponsive nanopartic... Among various smart drug delivery systems(DDSs),redox-responsive systems have emerged as promising platforms for tumor therapy.Herein,we successfully fabricated a tumor microenvironment dual redoxresponsive nanoparticle platform(DTX@Cys-0E NPs)assembled from an L-cystine-based biodegradable polymer(Cys-0E)for efficient delivery of docetaxel(DTX).The engineered Cys-0E features a unique structure containing both disulfide bonds and peroxalate ester bonds,synthesized via a one-step reaction.Notably,the strategic incorporation of 6-o-palmitoyl ascorbic acid(PA)not only enhances the stability of DTX@Cys-0E NPs but also generates tumor-specific H2O2.This PA-mediated H2O2 production triggers the degradation of the peroxalate ester bond,followed by CO2 generation,which ultimately results in DTXcontrolled release.Simultaneously,the disulfide bonds in Cys-0E react with high concentrations of glutathione(GSH)in tumor cells,increasing the reactive oxygen species(ROS)level,and further facilitating drug release.Both in vitro and in vivo experiment results show that,once DTX@Cys-0E NPs are enriched into tumor cells,the rapid degradation of Cys-0E triggered by these stimuli leads to a burst release of DTX,inducing tumor cell apoptosis and exhibiting significantly better tumor inhibition compared to free DTX.In summary,this novel dual redox-responsive nano platform holds great promise as a controlled drug release system for cancer therapy. 展开更多
关键词 L-Cystine Dual-responsive nanoparticle CO2-generating Drug delivery Cancer therapy
暂未订购 下载PDF
Enhanced furfural hydrogenation via Ru nanoparticles supported on CeO2-Mg(OH)2composite nanosheet 认领 引用
3
作者 Xiao-jun ZHAO Li-qiang WANG +3 位作者 Guang-ji ZHANG Yin FANG You-nian LIU Tie-chui YUAN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第4期1258-1268,共11页
Ru nanoparticles(NPs)supported on CeO2-Mg(OH)2 composite nanosheets,donated as Ru/CeO2-Mg(OH)2,are developed as the highly active catalyst for selective hydrogenation of furfural to furfuryl alcohol.Charac... Ru nanoparticles(NPs)supported on CeO2-Mg(OH)2 composite nanosheets,donated as Ru/CeO2-Mg(OH)2,are developed as the highly active catalyst for selective hydrogenation of furfural to furfuryl alcohol.Characterization results demonstrate that Ru NPs are adsorbed on the surface of the polyhedra of CeO2,which are scattered on the surface of the thin Mg(OH)2 nanosheets.Ru/CeO2-Mg(OH)2-0.2 achieves 92.6%conversion of furfural and 96.3%selectivity to furfuryl alcohol.Ru/CeO2-Mg(OH)2-0.2 retains high activity after six cycles,due to the introduction of CeO2 to form composite support that effectively prevents the leaching of Ru NPs.The strong metal-support interaction(SMSI)between Ru NPs and the CeO2-Mg(OH)2 composite support can tune the electronic structure of Ru NPs,which facilitates the H2 activation.Moreover,the CeO2-Mg(OH)2 interface exhibits specific adsorption of C=O bonds compared to the CeO2 alone.The composite-supported nanoparticles provide a valuable strategy for constructing highly efficient hydrogenation catalysts. 展开更多
关键词 Ru nanoparticles CeO2-Mg(OH)2composite support hydrogenation of furfural strong metal-support interaction electronic structure regulation
暂未订购 下载PDF
Reconstituted phospholipid membrane-coated Fe2+-Mg2+displacement nanoparticles block ferroptotic trigger waves 认领 引用
4
作者 Runhan Zhao Shanshan Zhang +5 位作者 Yanran Huang Xiao Qu Jingtao Xu Jun Zhang Wenguo Cui Xiaoji Luo 《Bioactive Materials》 SCIE CSCD 2026年第8期798-813,共16页
Ferroptotic trigger waves(FTWs)mediate the long-distance propagation of transient cell-death signals across tissues,resulting in spatially correlated,large-scale cellular dysfunction and programmed demise.Blocking of ... Ferroptotic trigger waves(FTWs)mediate the long-distance propagation of transient cell-death signals across tissues,resulting in spatially correlated,large-scale cellular dysfunction and programmed demise.Blocking of FTWs represents a promising therapeutic strategy for iron accumulation-related pathologies.Based on spatial characteristics of FTWs,this study developed a nanocoupled system(Mg/Ce-MOF@MUFA-PLs)integrating“intracellular-membrane-cell population”multi-physical level to block FTWs,aiming to efficiently block FTWs through precise cellular targeting,resistance of target cell membrane lipid peroxidation,and intracellular Fe2+-Mg2+displacement.This study employed coordination chemistry synthesis combined with short-range electro-static interactions to prepare Mg/Ce-MOF with toxic oxygen radical scavenging enzyme activity and Fe2+-Mg2+displacement capability;subsequently,the composite nanoparticles were coated with monounsaturated fatty acid phospholipids(MUFA-PLs)to endow them with capabilities of precise targeting and cell membranes MUFAPLs ratio enhancing.In vitro and in vivo experiments confirmed that Mg/Ce-MOF@MUFA-PLs achieving near 100%equimolar Fe2+-Mg2+displacement within 4 h,significantly increasing MUFA-PLs of target cell membrane and enabling efficient Mg/Ce-MOF delivery,over threefold improvement in ferroptosis resistance and redox systems compared to controls,and efficient bone mass enhancement with rapid defect healing in ovariectomized(OVX)miceats over 8 weeks.This FTWs-blocking strategy provides a paradigm for treating iron accumulationrelated diseases. 展开更多
关键词 Ferroptotic trigger waves Iron accumulation Nanoparticle Monounsaturated fatty acid phospholipids Fe2+-Mg2+ displacement
Defect-coordinated Au nanoparticles in carbon nitride for efficient piezo-photocatalytic hydrogen peroxide production 认领 引用
5
作者 Na Tian Chaofan Yuan +5 位作者 Tong Zhou Wenying Yu Yinghui Wang Na Zhang Yihe Zhang Hongwei Huang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第2期272-283,共12页
Hydrogen peroxide(H2O2),a versatile green oxidant and energy carrier,faces production challenges due to the energy-intensive anthraquinone process.Photocatalytic H2O2synthesis via the two-electron oxygen r... Hydrogen peroxide(H2O2),a versatile green oxidant and energy carrier,faces production challenges due to the energy-intensive anthraquinone process.Photocatalytic H2O2synthesis via the two-electron oxygen reduction reaction(2e–ORR)offers a sustainable alternative,but its efficiency is limited by sluggish charge transfer and insufficient active sites.Here,we design a dual-modulation strategy that combines defect-induced electronic tuning with piezoelectric polarization to enhance surface catalytic processes.Specifically,anchoring Au nanoparticles on N-deficient graphitic carbon nitride(CNNv-Au)allows N vacancies to modulate the electronic structure of the Au nanoparticles,increasing the proportion of electron-deficient Auδ+sites and enhancing Au–O2interactions,while the piezoelectric field simultaneously facilitates charge separation and directs electrons toward the adsorbed O2molecules.In-situ X-ray photoelectron spectroscopy(XPS)under simulated catalytic conditions revealed a 0.5 eV Au 4f shift toward higher binding energy,confirming enhanced electron transfer from Auδ+sites to adsorbed O2under light irradiation.Synergistic effects of these modifications elevate the H2O2production rate from 247.0 to 1788.5μmol g‒1 h‒1,a 7.2-fold enhancement.Combined XPS,electron paramagnetic resonance,density functional theory,and in-situ diffuse reflectance infrared Fourier transformed spectroscopy analyses confirm that N vacancies induce local polarization of Au sites,optimizing O2activation and intermediate stabilization.This work demonstrates a dual modulation strategy,defect-induced electronic tuning and piezoelectric polarization,to enhance surface catalytic processes,providing a blueprint for efficient photocatalytic H2O2generation. 展开更多
关键词 H2O2production Carbon nitride N vacancy Au nanoparticles Piezo-photocatalysis
暂未订购 下载PDF
FeNi nanoparticles cooperate with single-atom sites to drive non-radical fenton-like catalysis:Dominant singlet oxygen and electron transfer pathways for efficient wastewater purification 认领 引用
6
作者 Bei Han Chen Jin +7 位作者 Cuihong Luo Yuntao Liu Zhichao Dai Yunqiang Sun Zibao Gan Chong-Chen Wang Xiuwen Zheng Zunfu Hu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第3期187-200,共14页
Heterogeneous Fenton-like systems provide sustainable water-purification solutions;however,improving their catalytic efficiency and recyclability remains challenging.We developed a facile strategy to prepare an FeNi n... Heterogeneous Fenton-like systems provide sustainable water-purification solutions;however,improving their catalytic efficiency and recyclability remains challenging.We developed a facile strategy to prepare an FeNi nanoparticle(NPs)-coupled single-atom site catalyst((FeNi)NPs,SAs-N-C)),which exhibits a strong synergy between FeNi NPs and monodisperse Fe/Ni active sites.This catalyst effectively activates peroxymonosulfate(PMS)at low concentrations(0.2 mmol/L),generating abundant reactive oxygen species.Under the condition of continuous flow,the optimized system achieved over 99% sulfamethazine degradation within 3000 min,with a kinetic rate constant(k=1.5758 min-1)that is 16,17,and 7 times higher than those of MIL-88B(Fe),MIL-88B(Fe,Ni)and FeNPs,SAs-N-C,respectively.Mechanistic studies showed that PMS activation occurs via a nonradical pathway dominated by singlet oxygen(1O2)and direct electron transfer,enhancing the resistance to interference from inorganic anions and natural organic matter.Density functional theory calculations showed that FeNi NPs donated electrons to affect the d-orbitals in Fe single-atom sites,enhancing their interaction with PMS to produce 1O2 and enable electron transfer.This study presents a viable method for creating efficient NPs coupled with single-atom site catalysts for environmental clean-up. 展开更多
关键词 Fenton-like Bimetallic catalyst Nanoparticles and single atoms Singlet oxygen(1O2) Electron transfer
暂未订购 下载PDF
Facile synthesis copper-modified titania(Cu/TiO2)nanoparticles for high-efficiency Congo red adsorption 认领 引用 被引量：2
7
作者 Shuaishuai Zhang Qingwen Luo +3 位作者 Xinan Sun Lin Chi Peng Sun Lianke Zhang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2025年第5期87-94,共8页
Pure TiO2and copper-modified titania(Cu/TiO2)nanoparticles were synthesized through sol gel combined with the pyrolysis method for the removal of Congo red(CR)in wastewater treatment.Surface morphology and struc... Pure TiO2and copper-modified titania(Cu/TiO2)nanoparticles were synthesized through sol gel combined with the pyrolysis method for the removal of Congo red(CR)in wastewater treatment.Surface morphology and structural evaluation utilized XRD,TEM,Raman,FTIR and BET techniques.Cu/TiO2showed rich defects and a higher specific surface area than that of TiO2.The 1Cu/TiO2(molar ratio Cu/TiO2of 1/100)showed the best performance to adsorption of CR solution at different reaction conditions(contact duration,CR concentration,adsorbent dose,temperature,and initial pH).Adsorption kinetics and equilibrium isotherms were well-described with a pseudo-second-order kinetics and Freundlich model,respectively.The negative ΔG indicates stable adsorption of CR on the Cu/TiO2surface.The adsorption efficiency only decreases by 6%after 5 cycles of adsorption regeneration.The successful synthesis of Cu/TiO2offers a new possibility to address the problems related to CR dye from aqueous solutions. 展开更多
关键词 Cu/TiO2nanoparticles Congo red Adsorption behavior Stability
暂未订购 下载PDF
Enhancing Alkaline Hydrogen Evolution Reaction on Ru- Decorated TiO2 Nanotube Layers: Synergistic Role of Ti3+, Ru Single Atoms, and Ru Nanoparticles 认领 引用 被引量：2
8
作者 Sitaramanjaneya Mouli Thalluri Jhonatan Rodriguez-Pereira +7 位作者 Jan Michalicka Eva Kolíbalová Ludek Hromadko Stanislav Slang Miloslav Pouzar Hanna Sopha Raul Zazpe Jan M.Macak 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2025年第3期191-198,共8页
Synergistic interplays involving multiple active centers originating from TiO2 nanotube layers(TNT)and ruthenium(Ru)species comprising of both single atoms(SAs)and nanoparticles(NPs)augment the alkaline hydrogen evolu... Synergistic interplays involving multiple active centers originating from TiO2 nanotube layers(TNT)and ruthenium(Ru)species comprising of both single atoms(SAs)and nanoparticles(NPs)augment the alkaline hydrogen evolution reaction(HER)by enhancing Volmer kinetics from rapid water dissociation and improving Tafel kinetics from efficient H*desorption.Atomic layer deposition of Ru with 50 process cycles results in a mixture of Ru SAs and 2.8-0.4 nm NPs present on TNT layers,and it emerges with the highest HER activity among all the electrodes synthesized.A detailed study of the Ti and Ru species using different high-resolution techniques confirmed the presence of Ti3+states and the coexistence of Ru SAs and NPs.With insights from literature,the role of Ti3+,appropriate work functions of TNT layers and Ru,and the synergistic effect of Ru SAs and Ru NPs in improving the performance of alkaline HER were elaborated and justified.The aforementioned characteristics led to a remarkable performance by having 9mV onset potentials and 33 mV dec-1 of Tafel slopes and a higher turnover frequency of 1.72 H2 s-1 at 30 mV.Besides,a notable stability from 28 h staircase chronopotentiometric measurements for TNT@Ru surpasses TNT@Pt in comparison. 展开更多
关键词 alkaline hydrogen evolution reaction ruthenium nanoparticles ruthenium single atoms TiO2 nanotube layers water dissociation
暂未订购 下载PDF
Efficient electroreduction of CO2to acetate with relative purity of 100%by ultrasmall Cu2O nanoparticle on a conductive metal-organic framework 认领 引用 被引量：1
9
作者 Zhi-Xin Li Xiao-Feng Qiu Pei-Qin Liao 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第11期546-549,共4页
The efficient production of acetate through electrochemical CO2reduction reaction(eCO2RR)with low energy consumption has consistently been a challenging yet extremely significant task.Current catalysts suffered ... The efficient production of acetate through electrochemical CO2reduction reaction(eCO2RR)with low energy consumption has consistently been a challenging yet extremely significant task.Current catalysts suffered from high energy consumption and low relative purity of acetate product.Herein,we report ultrasmall Cu2O nanoparticles with an average size of 2.5±0.09 nm immobilized on a conductive copper-based metal-organic framework(Cu-THQ)(denoted as Cu2O@Cu-THQ),which attained a Faradaic efficiency of 65(3)%for acetate at a very low potential of-0.3 V vs.RHE with a current density of 10.5 m A/cm2.Importantly,as there are no other liquid phase products such as formate,methanol or ethanol,the relative purity of the obtained acetate product was as high as 100%.Taking into account the relative purity of the liquid product,current density,and energy consumption,the performance for electroreduction of CO2to acetate of Cu2O@Cu-THQ is not only much higher than that of the commercial Cu2O nanoparticles,but also higher than those of all reported catalysts.Operando infrared spectroscopy and theoretical calculations indicated that the synergy effect between Cu-THQ and Cu2O promoted the e CO2RR to yield acetate.Specifically,the hydroxyl group on the organic ligand THQ in the Cu-THQ formed hydrogen bond interactions with the key C2intermediates(*CH2COOH and*HOCCOH)adsorbed on Cu2O,which played a crucial role in stabilizing the key C2intermediates and thus reduced the formation energy of the key C2 intermediates. 展开更多
关键词 Metal-organic frameworks Carbon dioxide Electroreduction Acetate Cu2O nanoparticle
暂未订购 下载PDF
Fabrication of carbon-coated V2O5-x nanoparticles by plasma-enhanced chemical vapor deposition for high-performance aqueous zinc-ion battery composite cathodes 认领 引用 被引量：1
10
作者 Canglong Li Tao Liao +7 位作者 Dongping Chen Tiancheng You Xiaozhi Jiang Minghan Xu Huaming Yu Gang Zhou Guanghui Li Yuejiao Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第12期404-409,共6页
The insulating nature and dissolution of vanadium-based oxides in aqueous electrolytes result in low capacity and lifespan during charge/discharge process, which is unable to meet the demands for the development and a... The insulating nature and dissolution of vanadium-based oxides in aqueous electrolytes result in low capacity and lifespan during charge/discharge process, which is unable to meet the demands for the development and application of high-energy-density aqueous zinc-ion batteries(AZIBs). Herein, a novel V2O5-x@C composite cathode consisting of conductive carbon coatings with abundant oxygen vacancies is specifically designed through plasma-enhanced chemical vapor deposition(PECVD) method. As expected,the ideal microstructure of V2O5-x@C cathode enables large specific surface areas, fast electron/ion diffusion kinetics, and superior interfacial stability, which can realize outstanding cycling stability and electrochemical performance. Consequently, the V2O5-x@C composite cathode delivers a high reversible rate capacity of 130.6 mAh/g at 10 A/g and remains 277.6 mAh/g when returned to 1 A/g. In addition, the Zn//V2O5-x@C full cell can stably cycle for 1000 cycles with a high initial specific capacity of 149.2 m Ah/g,possessing 83.8% capacity retention at 5 A/g. The process of constructing a conductive layer on the surface of cathode materials while increasing oxygen vacancies in the structure through PECVD provides new insight into the design of high-performance cathode materials for AZIBs. 展开更多
关键词 Aqueous Zn-ion batteries V2O5-x@C nanoparticles Carbon-coating Chemical vapor deposition Composite cathodes
暂未订购 下载PDF
Promoting stability of sub-3 nm In2S3nanoparticles via sulfur anchoring for CO2electroreduction to formate 认领 引用
11
作者 Fanrong Chen Jiaju Fu +4 位作者 Liang Ding Xiaoying Lu Zhe Jiang Xiaoling Zhang Jin-Song Hu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2025年第4期138-145,共8页
The p-block metal(In,Sn,Bi,etc.)-based electrocatalysts have exhibited excellent activity in the electrocatalytic CO2reduction(ECR)to formate.However,the rapid decrease in catalytic activity caused by catalyst reco... The p-block metal(In,Sn,Bi,etc.)-based electrocatalysts have exhibited excellent activity in the electrocatalytic CO2reduction(ECR)to formate.However,the rapid decrease in catalytic activity caused by catalyst reconstruction and agglomeration under ECR conditions significantly restricts their practical applications.Herein,we developed a sulfur anchoring strategy to stabilize the high-density sub-3 nm In2S3nanoparticles on sulfur-doped porous carbon substrates(i-In2S3/S-C)for formate production.Systematic characterizations evidenced that the as-prepared catalyst exhibited a strong metal sulfide-support interaction(MSSI),which effectively regulated the electronic states of In2S3,achieving a high formate Faradaic efficiency of 91%at−0.95 V vs.RHE.More importantly,the sulfur anchoring effectively immobilized the sub-3 nm In2S3nanoparticles to prevent them from agglomeration.It enabled the catalysts to exhibit much higher durability than the In2S3samples without sulfur anchoring,demonstrating that the strong MSSI and fast charge transfer on the catalytic interface could significantly promote the structural stability of In2S3catalysts.These results provide a viable approach for developing efficient and stable electrocatalysts for CO2reduction. 展开更多
关键词 Electrochemical CO2reduction Strong metal sulfide-support interaction In2S3nanoparticles Stability Formate
暂未订购 下载PDF
Optimization of corrosion resistance of LMD-processed 316L austenitic stainless steel by adding CeO2nanoparticles in a simulated environment for PEMFCs 认领 引用
12
作者 Shaohua Zhang Pei Li +5 位作者 Yinghui Wei Lifeng Hou Pengpeng Wu Jie Zhang Baosheng Liu Yuezhong Zhang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第12期2857-2872,I0009,共16页
In this study,the corrosion resistance and the stability of passive films on the laser melting depositionprocessed 316L austenitic stainless steel with varying CeO2contents in the environment of proton exchange mem... In this study,the corrosion resistance and the stability of passive films on the laser melting depositionprocessed 316L austenitic stainless steel with varying CeO2contents in the environment of proton exchange membrane fuel cells were investigated using a combination of electrochemical and microstructural analyses.The findings reveal that 316L austenitic stainless steel with 0.20 wt%CeO2exhibits a superior corrosion resistance,primarily due to grain refinement,a high proportion of low-angle grain boundaries and low∑coincidence site lattice grain boundaries,as well as increased dislocation density.The addition of CeO2optimizes the type and size of inclusions and exerts a drag effect on grain boundaries,promoting the refinement of grains in the laser melting deposition-processed 316L auste nitic stainless steel.Moreover,the combined effect of these factors provides more active sites for the formation of a dense passive film with fewer point defects. 展开更多
关键词 Corrosion resistance LMD-processed 316L ASS CeO2nanoparticles Passive films Rare earths
暂未订购 下载PDF
The carbon capture performance of phase change absorbent based on nanoparticle enhancement 认领 引用
13
作者 Miaozhuang Chen Shuang Liang +2 位作者 Ruiqi Jia Liangliang Zhang Jianfeng Chen 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第4期365-374,共10页
A novel phase change absorbent,diethylamine ethanol(DEEA)/2-(2-aminoethylamino)ethanol(AEEA)/H2O-Al2O3(γ),which can be abbreviated as DAH-Al2O3(γ),was developed based on nanoparticle enhancement.Theγ... A novel phase change absorbent,diethylamine ethanol(DEEA)/2-(2-aminoethylamino)ethanol(AEEA)/H2O-Al2O3(γ),which can be abbreviated as DAH-Al2O3(γ),was developed based on nanoparticle enhancement.Theγ-Al2O3 nanoparticles had excellent dispersibility in the absorbent and could enhance the CO2 loading of the absorbent more than other nanoparticles.Theγ-Al2O3 nanoparticles slightly affected the phase separation ratio of the absorbent,but could reduce the viscosity of the CO2-rich phase and shorten the phase separation time.The nanoparticle migration in the two phases was explored,andγ-Al2O3 tended to migrate from the CO2-rich to the CO2-lean phase as CO2 loading increased.Compared to the DAH absorbent,the DAH-Al2O3 absorbent had a 17.67%higher absorption rate and a 24.39%higher desorption rate.Over five cycles,the phase separation behavior of the absorbent with nanoparticles remained stable.Similarly,theγ-Al2O3 nanoparticles retained excellent dispersibility in the absorbent.The regeneration energy of the absorbent was 2.46 GJ·t-1CO2,with 37.72%lower than the monoethanolamine absorbent.The strategy for the phase change absorbent with nanoparticle enhancement was feasible,providing a potential pathway for industrial carbon capture. 展开更多
关键词 CO2capture Phase change absorbent Nanoparticles Absorption Regeneration
暂未订购 下载PDF
Amorphous VB2 nanoparticles for stable hydrogen storage of 2LiBH4-MgH2 认领 引用 被引量：1
14
作者 Yu-Kun Liu Yu-Chen Pang +5 位作者 Chao-Qun Li Xiao-Yue Zhang Xue-Chun Hu Wei Chen Xue-Bin Yu Guang-Lin Xia 《Rare Metals》 SCIE EI CAS CSCD 2025年第8期5544-5553,共10页
As a typical reactive composite hydrogen storage system,2LiBH4-MgH2holds an ultrahigh hydrogen storage capacity of 11.5 wt%.However,it suffers from sluggish hydrogen storage kinetics due to the difficult nucleat... As a typical reactive composite hydrogen storage system,2LiBH4-MgH2holds an ultrahigh hydrogen storage capacity of 11.5 wt%.However,it suffers from sluggish hydrogen storage kinetics due to the difficult nucleation of MgB2.Herein,amorphous VB2nanoparticles with an average size of approximately 32 nm are synthesized to enhance the hydrogen storage performance of 2LiBH4-MgH2composite.VB2,sharing the same hexagonal structure with MgB2with a d-value mismatch ratio of only 2.28%,could serve as effective nucleation sites for promoting the formation of MgB2.Theoretical calculations reveal that the introduction of VB2significantly reduces the binding energies of B and Mg,facilitating in situ nucleation of MgB2.As a result,after the introduction of VB2nanoparticles,complete hydrogen desorption of 9.23 wt%is achieved for 2LiBH4-MgH2within 2 h at 400℃,which is 4 times shorter than the time required for pure 2LiBH4-MgH2,and no nucleation incubation period for hydrogen desorption is observed even at a low temperature of380℃.More importantly,a reversible capacity of9.3 wt%,corresponding to a capacity retention of 100%,could be preserved after 10 cycles of hydrogen storage,demonstrating stable reversible hydrogen storage performance.This study provides a novel technological pathway for improving the reversible hydrogen storage performance of composite metal hydrides and offers significant insights into the development of high-performance hydrogen storage materials. 展开更多
关键词 VB2nanoparticles 2LiBH4-MgH2 Hydrogen storage materials MgB2nucleation Cyclic stability
暂未订购 下载PDF
An investigation of silver-nanoparticle-modified TiO2substrates for photocatalytic oxidation in wastewater treatment 认领 引用 被引量：1
15
作者 Jackson Joseph Arulsamy Joy Prabu Henry Prunier +4 位作者 Felix Sahayaraj Arockiasamy Johnson Irudhayaraj Ebenezer Thaninayagam Gopi Rajakannu Ravi Snowlin Venice Selvam 《Nanotechnology and Precision Engineering》 EI CAS CSCD 2025年第3期18-28,共11页
This research aims to explore the decoration of TiO2 substrates with silver nanoparticles as a means of enhancing the photocatalytic oxidation of organic compounds.The results show that decorated TiO2 substrates... This research aims to explore the decoration of TiO2 substrates with silver nanoparticles as a means of enhancing the photocatalytic oxidation of organic compounds.The results show that decorated TiO2 substrates exhibit significantly higher photocatalytic activity in sunlight than undecorated substrates.Morphological analysis is performed,followed by optical and structural characterizations.Scanning electron microscopy analysis of the TiO2 reveals many nanotubular structures with particle sizes of∼134.4,148.8,and 132.7 nm at random locations.TiO2 is also found to have an absorbance range of 397.6 nm,from which it is known that the photocatalyst reacts in the presence of an ultraviolet source.From the Miller indices of the x-ray diffraction peaks,the preferred crystal orientation is found to be associated with a face-centered cubic structure with a crystallite size of 3.76 nm.Using these promising results,photocatalytic analysis is performed,revealing good degradation characteristics.This investigation reveals that TiO2 substrates coated with Ag nanoparticles possess significant potential for application in the photocatalytic oxidation of methylene blue dye,which is a crucial step toward establishing a cleaner environment. 展开更多
关键词 Photocatalytic oxidation Photocatalyst TiO2substrates Ag nanoparticles Surface-enhanced photocatalysis Methylene blue(MB)dye
暂未订购 下载PDF
Boosting hydrogen spillover over carbon nanotube anchored ultrafine Co/Co2O3nanoparticles for efficient neutral H2O2electrosynthesis 认领 引用 被引量：1
16
作者 Zhuoqi Zhou Yu Han +8 位作者 Manman Zou Ronglan Pan Xin Ge Chuanxun Du Jili Yuan Tao Wang Hao Zhang Hu Li Jian Zhang 《Rare Metals》 SCIE EI CAS CSCD 2025年第11期8619-8631,共13页
Neutral H2O2electro synthesis via two-electron oxygen reduction reaction(2e--ORR)is a promising alternative to replace traditional anthraquinone processes.However,it still remains significantly challenging to... Neutral H2O2electro synthesis via two-electron oxygen reduction reaction(2e--ORR)is a promising alternative to replace traditional anthraquinone processes.However,it still remains significantly challenging to develop efficient electrocatalysts due to sluggish neutral2e--ORR kinetics.Herein,we reported abundant ultrafine Co/Co2O3nanoparticles(NPs)anchored oxidic nitrogendoped carbon nanotubes(Co/Co2O3@OCNT)derived from the pyrolysis of the mixed OCNT and Co@Tpy,presenting synergistical enhancement effect on the water dissociation to supply active hydrogen coupling with O2to produce H2O2at positive onset potential of 0.66 V vs.RHE.As a result,Co/Co2O3@OCNT achieves a record current density of 4.0 mA cm-2at 0.2 V vs.RHE and nearly 100%H2O2selectivity at the potential from 0 to 0.5 V vs.RHE.In situ observations demonstrated that ultrafine Ci/Co2O3NPs and nitrogen-doped carbon supports would synergistic ally improve the active hydrogen feeding further to facilitate the formation of key intermediate*OOH.Furthermore,based on the sandwiched configuration of the flow cell,Co/Co2O3@OCNT shows a superior performance with the yield rate of salt-free aqueous H2O2solution around63.4 mol gcat-1h-1at 200 mA cm-2and the corresponding Faradaic efficiency of 85%.Moreover,integration of Co/Co2O3@OCNT into this cell achieves high real-time production concentration of H2O2around 20 mM at 200 mA cm-2by varying the pure water flow rate to1 mL min-1,suggesting the huge potential of salt-free H2O2solution production.This work provides a novel strategy for developing efficient neutral electrocatalysts and feasible process of neutral H2O2production. 展开更多
关键词 Ultrafine Co/Co2O3nanoparticles Oxidic nitrogen-doped carbon nanotubes Hydrogen spillover Two-electron ORR Neutral H2O2electrosynthesis
暂未订购 下载PDF
Effect of SiO2Nanoparticles on Durability of Polyurethane-Coated Polyamide Tent Fabric 认领 引用
17
作者 AFRIDA Noboni Rawnak WANG Yiming +3 位作者 ZHOU Chuan WEN Qingwen LI Ni SHAO Xiaoqiang 《Journal of Donghua University(English Edition)》 CAS 2025年第6期620-627,共8页
In this paper,polyamide(PA)woven fabric was used as the base fabric,and polyurethane(PU)solution containing silica nanoparticles(PU@SiO2NPs)was used as the coating solution to prepare composite tent fabric(PA/PU@Si... In this paper,polyamide(PA)woven fabric was used as the base fabric,and polyurethane(PU)solution containing silica nanoparticles(PU@SiO2NPs)was used as the coating solution to prepare composite tent fabric(PA/PU@SiO2).The morphology,structure,and durability of the tent fabric under ultraviolet(UV)radiation,waterstained,or thermal conditions were investigated.The results show that compared with PA/PU fabric without SiO2NPs,when the mass fraction of SiO2NPs in PU coating is 5%,the air permeability of PA/PU@SiO2fabric decreases from about 7.5 to 6.0 nm/s,while the reflectivity to UVvisible light is significantly improved.The surface wettability decreases,as indicated by the average water contact angle(WCA)on PA/PU@SiO2remaining stable at 47°after 9 min.After thermal treatment,the PA/PU@SiO2fabric shows superior mechanical stability.The degradation rate of the tensile strength is only 6.3%,approximately half that of the PA/PU fabric.Meanwhile,the elongation at break increases to 98.9%,compared to 61.8%for the PA/PU fabric. 展开更多
关键词 polyamide tent fabric SiO2nanoparticle polyurethane coating durability
暂未订购 下载PDF
Improvement in UV resistance of entomopathogenic viruses by coating silica nanoparticles on occlusion bodies surface 认领 引用 被引量：1
18
作者 Jia Wang Zhongqiang Wu +2 位作者 Xiaoqin Yang Chengfeng Lei Xiulian Sun 《Virologica Sinica》 SCIE CAS CSCD 2025年第6期1002-1010,共9页
Entomopathogenic viruses,such as baculoviruses and cypoviruses,have been employed as biological pesticides against agricultural and forestry pests.However,their susceptibility to inactivation under field UV radiation ... Entomopathogenic viruses,such as baculoviruses and cypoviruses,have been employed as biological pesticides against agricultural and forestry pests.However,their susceptibility to inactivation under field UV radiation has hindered their broader application.In this study,we effectively improved the UV resistance of insect virus occlusion bodies(OBs)by coating their surfaces with silica nanoparticles(SiO2NPs).Monodisperse SiO2NPs with uniform size distribution and excellent colloidal stability were synthesized using the Stober method.Subsequent amination modification of the SiO2NPs with a silane coupling agent shifted their isoelectric point from 3.2 to 8.1.This modification imparted a strong positive charge to the NPs within the pH range of 4.5-5.5,while the OBs of insect viruses remained negatively charged in this range.Consequently,the amino-functionalized SiO2NPs were successfully coated onto the surfaces of OBs of three representative insect viruses:nucleopolyhedrovirus,granulovirus,and cypovirus,through electrostatic interactions.Laboratory bioassays confirmed that Mamestra brassicae multiple nucleopolyhedrovirus(MbMNPV)coated with SiO2-NH2 NPs retained its native viral pathogenicity against Spodoptera exigua larvae under normal laboratory condition,while it demonstrated 2.299-2.712 folds higher potency than MbMNPV physically mixed with unmodified SiO2NPs after UV irradiation.Outdoor trials revealed that SiO2-NH2NPs coating significantly improved the survival time of MbMNPV,with the median survival time increased from 1.43 days to 5.15 days.This nanoparticle coating strategy establishes a robust platform for developing photostable biopesticides while preserving their ecological safety profiles.The modular nature of this approach suggests its broad applicability across different entomopathogenic virus formulations. 展开更多
关键词 Baculovirus Bioinsecticide Amino-functionalized SiO2 nanoparticle UV resistance
暂未订购 下载PDF
Joining of SiO2 ceramic and TC4 alloy by nanoparticles modified brazing filler metal 认领 引用 被引量：17
19
作者 Hong BIAN Yanyu SONG +3 位作者 Duo LIU Yuzhen LEI Xiaoguo SONG Jian CAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2020年第1期383-390,共8页
Nano-Al2O3 particles modified Ag Cu Ni filler was adopted to braze the SiO2 ceramic and TC4.The effects of filler size as well as the brazing temperature on the interfacial microstructure and mechanical property of th... Nano-Al2O3 particles modified Ag Cu Ni filler was adopted to braze the SiO2 ceramic and TC4.The effects of filler size as well as the brazing temperature on the interfacial microstructure and mechanical property of the joints were investigated.Nanoscale filler reduced the phases dimension and promoted the homogeneous distribution of microstructure,obtaining a higher joint strength when compared to microscale filler.The increase of brazing temperature made the accelerating dissolution and diffusion of Ti,which promoted the increase of thickness of Ti4O7+TiSi2 layer adjacent to SiO2 ceramic and diffusion layer zone nearby TC4 alloy.The hypoeutectic structure was produced in the brazing seam due to the high Ti content.The maximum shear strength of^40 MPa was obtained at 950°C for 10 min. 展开更多
关键词 Brazing Microstructure Nanoparticles modified filler SiO2 ceramic TC4
暂未订购 下载PDF
Fabrication of Cu_2O@Cu_2O core-shell nanoparticles and conversion to Cu_2O@Cu core-shell nanoparticles in solution 认领 引用 被引量：6
20
作者 杨爱玲 李顺嫔 +3 位作者 王玉金 王乐乐 包西昌 杨仁强 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第11期3643-3650,共8页
Cu2O@Cu2O core-shell nanoparticles (NPs) were prepared by using solution phase strategy. It was found that Cu2O@Cu2O NPs were easily converted to Cu2O@Cu NPs with the help of polyvinylpyrrolidine (PVP) and excessive a... Cu2O@Cu2O core-shell nanoparticles (NPs) were prepared by using solution phase strategy. It was found that Cu2O@Cu2O NPs were easily converted to Cu2O@Cu NPs with the help of polyvinylpyrrolidine (PVP) and excessive ascorbic acid (AA) in air at room temperature, which was an interesting phenomenon. The features of the two kinds of NPs were characterized by XRD, TEM and extinction spectra. Cu2O@Cu NPs with different shell thicknesses showed wide tunable optical properties for the localized surface plasmon (LSP) in metallic Cu. But Cu2O@Cu2O NPs did not indicate this feature. FTIR results reveal that Cu+ ions on the surface of Cu2O shell coordinate with N and O atoms in PVP and are further reduced to metallic Cu by excessive AA and then form a nucleation site on the surface of Cu2O nanocrystalline. PVP binds onto different sites to proceed with the reduction utill all the Cu sources in Cu2O shell are completely assumed. 展开更多
关键词 Cu2O@Cu2O core-shell nanoparticles Cu2O@Cu core-shell nanoparticles solution phase strategy reducing agent tunable optical properties polyvinylpyrrolidine
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 69 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈