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New functional metal-organic framework(MOF) based optical thermometer by the post-synthesis doping rare earth ions into MOF 认领 引用 被引量：1
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作者 Ying Zhao Yin-Hang Chai +4 位作者 Meng-Meng Zhai Qin-Ying Jin Xiaoyan Lu Yi-Dan Qiao Lu-Fang Ma 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期644-649,共6页
Ln@MOFs by anchoring rare metal ions(Ln) into metal-organic frameworks(MOFs) are proved to have great potential in the field of luminescent molecular thermometer.Nevertheless,the current research indicated that the po... Ln@MOFs by anchoring rare metal ions(Ln) into metal-organic frameworks(MOFs) are proved to have great potential in the field of luminescent molecular thermometer.Nevertheless,the current research indicated that the poor structural stability and low sensitivity hindered their application scope.In this work,a new MOF Zn-450 luminescent thermometer with multiple emission fluorescence characteristics was synthesized by the combination of 3,3,5,5-biphenyl tetracarboxylic acid(H4L) and Zn2+ ion under solvothermal conditions.Interestingly,a high relative sensitivity of 1.43 % K-1 was found within 80-300 K based on Zn-450.Subsequently,two high-sensitivity luminescent Ln@MOFs(Ln = Eu and Tb) were further fabricated by doping rare earth ions into Zn-450 based on the post-synthesis strategy.Among them,the Eu@Zn-450 demonstrates various luminous behaviors while achieving an increased relative sensitivity of 1.63 % K-1.In addition,the continuously visible red,pink,and purple luminescent emissions at the same temperature range were observed,suggesting that the Eu@Zn-450 could be utilized as a luminescent colorimetric molecular thermometer.Importantly,this work can present new possibilities for the development of rare earth-doped luminescence and its temperature sensing properties. 展开更多
关键词 MOFs Optical thermometer Post-synthesis functionalization Rare metal ions LED
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State-Resolved Ar II Population Distributions under Femtosecond Strong-Field Excitation 认领 引用
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作者 Di Wang Yuxuan Zhang +7 位作者 Zhigang Zheng Mingyue Wang Zhihui Lv Li Wang Xiaowei Wang Dongwen Zhang Jing Zhao Zengxiu Zhao 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第6期22-26,共5页
We measure spontaneous emission from Ar II ions produced by femtosecond strong-field excitation of argon and reconstruct state-resolved excited-state populations from selected emission lines spanning upper-level energ... We measure spontaneous emission from Ar II ions produced by femtosecond strong-field excitation of argon and reconstruct state-resolved excited-state populations from selected emission lines spanning upper-level energies of~19-23 eV above the Ar II ground state.The ionic-line intensities follow a power-law dependence on pulse energy and a non-monotonic dependence on gas pressure,and the extracted populations deviate significantly from a Boltzmann distribution.The deviation grows with increasing pulse energy,reflecting a stronger nonequilibrium character of the initial population prepared by the strong field,and weakens with increasing gas pressure,consistent with collisional redistribution driving the system toward thermal equilibrium.These results establish ionic fluorescence as a practical state-resolved probe of nonequilibrium population distributions in strong-field-ionized argon. 展开更多
关键词 femtosecond strong field excitation AR II ions emission lines boltzmann distributionthe spontaneous emission ionic line intensities population distributions state resolved
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Adsorption properties of ammonium dibutyl dithiophosphate on argentite and sphalerite surface in pulp containing silver and zinc ions 认领 引用
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作者 Ting-sheng QIU Kai-wei DING +4 位作者 Guan-fei ZHAO Guo-dong LI Wen-hui YANG Hao CHENG Shun-de YAN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第1期273-286,共14页
The flotation separation of argentite from sphalerite using ammonium dibutyl dithiophosphate(ADD)was studied.Molecular simulation(MS)calculation shows that ADD is chemisorbed on argentite and sphalerite surface in the... The flotation separation of argentite from sphalerite using ammonium dibutyl dithiophosphate(ADD)was studied.Molecular simulation(MS)calculation shows that ADD is chemisorbed on argentite and sphalerite surface in the form of S—P bond.The ADD adsorption on argentite and sphalerite surface in Ag+system was revealed by ICP,Zeta potential and XPS analyses.It is shown that the dissolved Ag+from argentite surface can be absorbed on sphalerite surface in the form of silver hydroxide,and AgOH hydrophilic colloid prevents the adsorption of ADD on sphalerite surface.The ADD adsorption on argentite and sphalerite surface in the pulp containing silver and zinc ions was revealed by adsorption capacity and surface wettability analyses.It is shown that the combined Zn(OH)2 and AgOH hydrophilic colloid leads to greater ADD adsorption capacity on argentite surface and stronger surface hydrophobicity than sphalerite.Flotation tests demonstrate that ADD enables efficient separation of argentite from sphalerite in the pulp containing silver and zinc ions. 展开更多
关键词 argentite sphalerite ammonium dibutyl dithiophosphate silver ions adsorption
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Constructing ultra-stable quasi-solid-state flexible aqueous cobalt ions batteries through common-ion effect 认领 引用
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作者 Chaowei Li Wenhui Wang +7 位作者 Jingchao Zhang Yinhao Xiao Xiangtao Kong Xiaoge Li Daojun Zhang Weimin Du Guo Hong Yagang Yao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期341-349,共9页
Driven by the burgeoning demand for wearable electronics,the development of inherently safe,mechanically compliant,and high-energy–density power sources has become imperative.Flexible aqueous Zn ions batteries(FAZIBs... Driven by the burgeoning demand for wearable electronics,the development of inherently safe,mechanically compliant,and high-energy–density power sources has become imperative.Flexible aqueous Zn ions batteries(FAZIBs)are hampered by Zn dendrite formation and hydrogen evolution,underscoring the urgent need for highly stable and novel flexible energy-storage devices.Although flexible aqueous cobalt-ion batteries(FACIBs)employing cobalt-salt aqueous electrolytes exhibit high theoretical capacity,they suffer from two limitations:the rapid dissolution of cathode active substances in the aqueous electrolyte and the risk of liquid electrolyte leakage under mechanical deformation.Here,we report the first realization of an ultra-stable,quasi-solid-state and mechanically FACIBs.Polyacrylamide(PAM)containing CoSO4 serves as the quasi-solid electrolyte,while cobalt hexacyanoferrate(CoHCF)functions as the cathode active material,and metallic cobalt foil as the flexible anode.This configuration simultaneously eliminates electrolyte leakage and suppresses the dissolution of CoHCF due to the common-ion effect of Co2+.Consequently,the fabricated FACIBs exhibit extraordinary cycling durability and remarkable mechanical robustness(95.9%retention after 500 bending cycles).Thus,this work provides a new way for designing ultra-stable energy storage devices for wearable electronics. 展开更多
关键词 Flexible aqueous Co ions batteries Gel electrolytes CoHCF Co anode High stability
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Effective recovering Pd(Ⅱ) ions via tuning the Lewis basicity of nanofiber capture vacancy 认领 引用
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作者 Nianshou Cheng Mingyue Wang +6 位作者 Lu Wang Lin Zhang Chuanbin Li Yu Guo Bo Xing Haichao Wang Min Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第2期690-699,共10页
Recovery of palladium from spent catalysts is of great practical significance for the construction of ecological civilization and resource recycling.However,for environmentally friendly adsorption methods,designing sp... Recovery of palladium from spent catalysts is of great practical significance for the construction of ecological civilization and resource recycling.However,for environmentally friendly adsorption methods,designing specialized capture vacancies with high capacity and precise selectivity for Pd(Ⅱ) ions remains a challenge.Herein,a salicylic acid-modified nanofiber(SANF),exhibiting specific spatial configuration and constructing a capture vacancy by "O-O" of hard bases,was designed and employed for recovering and separating palladium.The adsorption results indicated that the SANF exhibited a fast capture rate(reaching adsorption equilibrium within60 min) and a large capture capacity(about 170 mg/g) for Pd(Ⅱ) ions,and the capture process was exothermic and spontaneous.Additionally,the Lewis basicity of the capture vacancy after tuning better matches the Lewis acidity of Pd(Ⅱ) ions,which achieves a high-selectivity separation of Pd(Ⅱ) ions(selectivity coefficient for K(Ⅰ),Na(Ⅰ) Ca(Ⅱ),Mg(Ⅱ) and Al(Ⅲ) ions are 1505.2,10,536.7,1128.9,2634.2 and 2873.6,respectively).Practical applications showed that SANF was enabled to recover Pd(Ⅱ) ions from spent catalyst leachate and achieved four time adsorption-desorption cycles,possessing some industrial promise.Furthermore,the matching mechanism between the Lewis basicity of the capture vacancy and the Lewis acidity of the Pd(Ⅱ) ions was revealed through series characterization and theoretical calculations.Finally,it is proposed a Lewis basicity tuning strategy founded on a specific spatial structure,provides a new insight for the design and construction of a capture vacancy for Pd(Ⅱ) ions in the future. 展开更多
关键词 Adsorption Pd(Ⅱ)ions Nanofiber Selectivity
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Impact of residual ions on catalyst structure and catalytic performance:A review 认领 引用
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作者 Yaofei Zhang Jiani Chen +4 位作者 Haotian Hu Jianghua Huang Jiafeng Wei Fukun Bi Xiaodong Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期82-92,共11页
Residual ions introduced during catalyst synthesis can significantly impact both the structure and performance of the catalyst.Despite their crucial role,the effects of these residual ions are frequently overlooked in... Residual ions introduced during catalyst synthesis can significantly impact both the structure and performance of the catalyst.Despite their crucial role,the effects of these residual ions are frequently overlooked in catalyst design and optimization.This review systematically surveys the characteristics and sources of typical residual ions in catalytic systems,including halogen anions,acidic anions,and alkali metal cations.It also examines their impact on both the supports and active metals of supported catalysts,as well as the alterations in surface,crystal structure,and chemical states of non-supported catalysts.The effects of residual ions on the performance of these catalysts in catalytic reactions such as oxidation and hydrogenation are discussed in detail.Additionally,the influence mechanism of residual ions on the catalysts is further explored,with a focus on their promotion and inhibition roles in catalytic processes,thus providing insights for the development of more efficient and durable catalysts.A summary finally provides an outlook on future approaches to advance catalyst preparation and mitigate the adverse effects of residual ions in catalysis. 展开更多
关键词 Residual ions Catalyst structure Catalytic performance Catalyst preparation Influence mechanism
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Ratiometric fluorescent probes based on nitrogen-doped carbon dots for the fluorescence detection of sulfide ions 认领 引用
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作者 CAI Zhifeng ZHANG Yiran +3 位作者 CAI Qun JIA Miao FENG Yaxuan ZHANG Yuqi 《无机化学学报》 SCIE CAS CSCD 北大核心 2026年第5期1015-1025,共11页
Herein,ratiometric fluorescence-based carbon dots(N-CDs)with blue emission were prepared by using simple one-step hydrothermal methods from benzimidazole and L-tryptophan as precursors.Dual emission peaks were observe... Herein,ratiometric fluorescence-based carbon dots(N-CDs)with blue emission were prepared by using simple one-step hydrothermal methods from benzimidazole and L-tryptophan as precursors.Dual emission peaks were observed at 356 and 442 nm under the excitation wavelength of 303 nm.Upon addition of sulfide ions(S2-),the fluorescence intensity at 442 nm decreased significantly,while that at 356 nm increased.The F442/F356 intensity ratio(where F356 and F442 refer to the fluorescence intensity at 356 and 442 nm,respectively)exhibited a linear relationship with the concentration of S2-(0-60.0μmol·L-1),and the detection limit was determined to be 0.076μmol·L-1.The fluorescence detection mechanism was ascribed to the static quenching effect.Furthermore,this fluorescence probe was successfully used for the determination of S2-in real samples with satisfactory recoveries.Finally,the analytical greenness metric for sample preparation(AGREEprep)and blue applicability grade index(BAGI)tools indicated the high sustainability of this platform. 展开更多
关键词 amino acid-based carbon dots ratiometric determination sulfide ions real samples
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Applications of theoretical calculations in alkali metal-ion battery investigation 认领 引用 被引量：1
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作者 Hanmei Zhang Xiaoxu Liu +4 位作者 Tianyi Ji Jianxin Ran Yang Li Zexiang Shen Xiaofeng Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期149-159,共11页
Alkali metal-ion batteries,such as lithium-ion and sodium-ion batteries,have been widely recognized by both academia and industry for their high energy density,long cycle life,low self-discharge rate,and environmental... Alkali metal-ion batteries,such as lithium-ion and sodium-ion batteries,have been widely recognized by both academia and industry for their high energy density,long cycle life,low self-discharge rate,and environmental friendliness.Theoretical calculations are crucial in elucidating the energy storage mechanism of alkali metal-ion batteries and in designing the next generation of high-performance energy storage systems.This article reviews the application of theoretical calculations in alkali metal-ion batteries.These calculations are instrumental for experimental researchers in understanding the microscopic design of electrode materials,optimizing various interfaces and electrolyte structures,and clarifying ion and electron transport behaviors as well as electrochemical reaction mechanisms.Specifically,researchers typically calculate the reduction reactions,charge state changes,and structural changes of cathode materials to predict their electrochemical reactivity and optimize their performance and stability.Calculations and simulations of alkali metal batteries focus on ion transport dynamics within the electrolyte,including energy level distribution,solvation structure,and molecular dynamics simulations.Analyzing oxidation reactions,ion diffusion,and volume changes in various alkali metal-ion battery anode materials enables the screening and design of new anode materials with superior electrochemical properties.This review also discusses the challenges of applying theoretical calculations in alkali metal-ion batteries and provides an outlook for future research.Critical insights are offered for advancing research paradigms that integrate theoretical and experimental approaches in the development of energy storage electrode materials. 展开更多
关键词 Alkali metal-ion batteries Theoretical calculations Electrode materials design Ion transport dynamics Energy storage mechanisms
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Modeling study of synergistic effects of neutral beam injection hot ions on helicon wave current drive in HL-3 tokamak 认领 引用
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作者 Shu-Heng Sun Dao-Zheng Zi +2 位作者 Zu-Guang Liu Sen Wang Xin-Xia Li 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第3期399-404,共6页
Helicon waves with very high ion cyclotron harmonics have been proposed for active off-axis current drive in tokamak with high performance operations.Under the application of ion cyclotron resonant heating or the neut... Helicon waves with very high ion cyclotron harmonics have been proposed for active off-axis current drive in tokamak with high performance operations.Under the application of ion cyclotron resonant heating or the neutral beam injection,hot ions with very high energy exist.For helicon waves with a wave frequency of 476 MHz and n‖=3.0,as utilized in DⅢ-D and KSTAR tokamaks,theoretical analysis based on the fast wave dispersion relation indicates that the ion damping coefficient can be comparable to electron damping coefficient once the hot ions are injected.The synergistic effects of hot ions produced by neutral beam injection on helicon wave current drive in the HL-3 tokamak are investigated numerically using GENRAY/CQL3D simulations.The results indicate that electron damping remains the dominant mechanism owing to the low concentration of hot ions,and robust off-axis current drive can generally be achieved in the device.Considering the hot ions with an average energy~80 keV produced by neutral beam injection,positive synergistic effects between the hot ions and the helicon wave are observed,where super hot ions with energy exceeding 100 keV appear,as evidenced by the formation of a pronounced plateau in the hot ion velocity distribution function.Finally,the introduction of minority hot ions is proved to have a limited effect on the total current drive in the device. 展开更多
关键词 hot ions helicon wave tokamak HL-3
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A design strategy of ratiometric optical probe for Fe3+ions and ascorbic acid detection based on europium-doped carbon dots 认领 引用
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作者 Min Li Mingyang Han +7 位作者 Xinying Song Yiming Chen Zepeng Wu Li Guan Fenghe Wang Dawei Wang Longfeng Lv Xu Li 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第5期1415-1424,共10页
Rare-earth doped carbon dots represent a new generation of nanomaterials,which achieve the functional modulation and property optimization of carbon dots materials.In this paper,Eu3+-doped carbon dots(Eu-CDs)were p... Rare-earth doped carbon dots represent a new generation of nanomaterials,which achieve the functional modulation and property optimization of carbon dots materials.In this paper,Eu3+-doped carbon dots(Eu-CDs)were prepared employing a one-step hydrothermal approach.The structure and properties of Eu-CDs were characterized using a transmission electron microscope(TEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),Fourier transform infrared(FTIR)spectroscopy,etc.Eu-CDs exhibit a series of distinct emission peaks at 467,595,620 and 702 nm when excited at 395 nm,respectively.An“off-on”strategy for detecting of Fe3+and ascorbic acid was established on the basis of changes in luminescence peak intensity ratios of the CDs and Eu3+,which effectively reduces the detection limit compared with single-peak detection.The I467/I595 of Eu-CDs exhibits an excellent linear association with the concentrations of Fe3+or ascorbic acid,and the limit of detections are 0.15 and 0.13μmol/L,respectively,indicating that Eu-CDs can be applied for the quantitative measurement of Fe3+and ascorbic acid,and are successfully applied in real samples. 展开更多
关键词 Eu-CDs Luminescence peak intensity ratio Detection limit Fe3+ions Ascorbic acid Rare earths
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Magnesium and nerve injury:Mechanisms and applications 认领 引用
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作者 Hongye Yan Su Pan +2 位作者 Longchuan Zhu Weijian Kong Zhiping Qi 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第9期3933-3942,共10页
Magnesium is a vital mineral that plays an important role in recovery from nerve injury recovery by inhibiting excitotoxicity,suppressing inflammatory effects,reducing oxidative stress,and protecting mitochondria.The ... Magnesium is a vital mineral that plays an important role in recovery from nerve injury recovery by inhibiting excitotoxicity,suppressing inflammatory effects,reducing oxidative stress,and protecting mitochondria.The role of magnesium ions in the field of nerve injury repair has garnered substantial attention.This paper aims to review the mechanisms of action and potential applications of magnesium in nerve injury repair.Magnesium ions,as key neuroregulatory factors,substantially alleviate secondary damage after nerve injury by inhibiting N-methylD-aspartate receptors,regulating calcium ion balance,providing anti-inflammatory and antioxidant effects,and protecting mitochondrial function.Magnesium ions have been shown to reduce neuronal death caused by excitotoxicity,inhibit the release of inflammatory factors,and improve mitochondrial function.Additionally,magnesium materials,such as metallic magnesium,magnesium alloys,surface-modified magnesium materials,and magnesium-based metallic glass,exhibit unique advantages in nerve repair.For example,magnesium materials can control the release of magnesium ions,thereby promoting axonal regeneration and providing mechanism support.However,the rapid corrosion of magnesium materials and the limited amount of research on these materials hinder their widespread application.Existing small-sample clinical studies have indicated that magnesium formulations show some efficacy in conditions such as migraines,Alzheimer's disease,and traumatic brain injury,offering a new perspective for the application of magnesium in nerve injury rehabilitation.Magnesium ions and their derived materials collectively hold great promise for applications in nerve injury repair.Future efforts should focus on indepth research on the mechanisms of action of magnesium ions and the development of magnesium-based biomaterials with enhanced performance.Additionally,large-scale clinical trials should be conducted to validate their safety and efficacy. 展开更多
关键词 brain injury magnesium ions magnesium-based materials mechanism of nerve injury nerve injury repair nerve regeneration optic nerve injury peripheral nerve injury spinal cord injury
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Coupling of a High-Temperature Ion Trap Reactor with an Electron-Spray-Ionization Source for Reactions of Mass-Selected Organometallic Ions 认领 引用
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作者 An Zhao Qing-Yu Liu +2 位作者 Zhong-Pu Zhao Zi-Yu Li Sheng-Gui He 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2026年第1期29-40,I0016-I0020,I0042,共12页
Organometallics play a vital role in catalytic and synthetic processes.Understanding the indi-vidual elementary steps of the reactions of organo metallic com-pounds is crucial for the development and ratio-nal design ... Organometallics play a vital role in catalytic and synthetic processes.Understanding the indi-vidual elementary steps of the reactions of organo metallic com-pounds is crucial for the development and ratio-nal design of new organometallic reagents and catalysts.Study of gas-phase reactions is one of the key approaches to probing the individual elementary steps under isolated and re-producible conditions.A series of investigations have been reported on the gas-phase reac-tions between organometallic ions and neutral molecules under room temperature conditions.However,studies about the reactions between organometallic ions and neutral molecules un-der heating conditions are very limited.In this work,an apparatus with an electrospray ion-ization source and an ion funnel trap,which can be coupled with a high-temperature linear ion trap reactor,was designed and built.The apparatus can be used to investigate the reac-tions between organometallic ions and neutral molecules under heating conditions.By using the apparatus,the adsorption reactions of Rh(PPh3)2++CO→Rh(PPh3)2CO+and CuPPh3++CO2→CuPPh3CO2+under variable temperature conditions have been conducted.The experiments showed that the reaction rate constant of Rh(PPh3)2++CO increases first and then decreases with increasing temperature.In contrast,the rate constant of CuPPh3++CO2decreases monotonically as the temperature increases.Density functional theory calculations indicate that the adsorption reaction of Rh(PPh3)2++CO→Rh(PPh3)2CO+is subject to a small barrier,while CuPPh3++CO2→CuPPh3CO2+is barri-erless,which is consistent with the experimentally observed temperature-dependent rate con-stants.The newly built apparatus can thus provide new kinetic information to address reac-tion mechanisms for organometallic ions. 展开更多
关键词 Electron spray ionization Organometallic ions Gas-phase ion-molecule reaction
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Carbonyl-bridged trifluoromethyl pyridine derivatives for pest control and mechanistic investigations 认领 引用
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作者 Zhubo Sheng Jie Deng +5 位作者 Qinglong Yuan Wen Fu Zhiping Xu Xiaoyan Li Zhong Li Xusheng Shao 《Advanced Agrochem》 CAS CSCD 2026年第1期33-40,共8页
Trifluoromethyl pyridine(TFMP)motif is commonly discovered in structures of active pharmaceuticals.Flonicamid,characterized by the TFMP moiety,is well known as a prodrug in the knockdown of pests.The azobenzene-modifi... Trifluoromethyl pyridine(TFMP)motif is commonly discovered in structures of active pharmaceuticals.Flonicamid,characterized by the TFMP moiety,is well known as a prodrug in the knockdown of pests.The azobenzene-modified TFMP derivatives have been previously reported with excellent insecticidal activities.Herein,twenty-one TFMP derivatives were designed by the introduction of carbonyl-bridged aryl groups and synthesized via a one-step synthesis using Flonicamid as the starting material.The structure-activity relationships of these compounds were well analyzed and discussed.A molecular docking study and calcium ion concentration analysis indicated that compound FC13 could have interacted with the nicotinamidase enzyme,which further influenced the Ca2+influx. 展开更多
关键词 TFMP Carbonyl-bridged Structure-activity relationships Molecular docking Calcium ion
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Construction of CoP/Mn2P Heterojunctions via One-Step Phosphorization Coupled With Hollow Hard Carbon Spheres as Supports:Enabling Ultrastable Long-Cycle Sodium-Ion Anodes Over a Wide Temperature Range 认领 引用
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作者 Shuang‑Lin Cai Yong‑Qi Ye +11 位作者 Jin wei Yan Yu‑Han Yuan Jia Liang Hai Huang Ye Zeng Xiao‑Hong Fan Ming‑Ming Tao Jie Lei Gui‑Fang Li Yi Li Ding‑Rong Deng Qi‑Hui Wu 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期661-679,共19页
Driven by global energy transition and sustainability,sodium-ion batteries(SIBs)have emerged as key alternatives to lithiumion batteries for low-to-medium energy storage,because of abundant sodium resources and low co... Driven by global energy transition and sustainability,sodium-ion batteries(SIBs)have emerged as key alternatives to lithiumion batteries for low-to-medium energy storage,because of abundant sodium resources and low cost.However,their commercialization is hindered by the lack of anodes with high capacity,fast kinetics,and long-term stability.In this work,a bimetallic phosphide heterojunction hollow carbon sphere composite(DHC-CoP/Mn2P@HG)was designed and synthesized via multidimensional structural and compositional engineering.A one-step phosphorization strategy constructed the CoP/Mn2P heterojunction,whose interfacial electronic coupling alleviates poor conductivity and severe volume expansion compared to single-metal phosphides.Hollow hard carbon spheres(HG)buffer volume variation and enable efficient electron transport,whereas dopamine hydrochloride-derived N-doped carbon enhances active sites and interfacial adhesion to suppress structural degradation.Electrochemical characterizations show that the DHC-CoP/Mn2P@HG anode delivers a reversible capacity of232 mAh g-1 after 13,000 cycles at 20 A g-1(capacity retention~95%)and exhibits excellent temperature tolerance(negligible capacity decay after 300 cycles at-30℃or 500 cycles at 50℃).Density functional theory(DFT)calculations reveal interfacial charge rearrangement at the heterojunction,providing theoretical support for performance enhancement.This study establishes a novel paradigm for SIB anodes with wide temperature adaptability and ultralong cycle life,promoting the practical application of SIBs. 展开更多
关键词 bimetallic phosphides heterojunctions hollow hard carbon spheres sodium‑ion batteries wide temperature range
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Distribution and Transport of Lithium Ions at Interfaces between Graphite and Carboxymethyl Celluloses 认领 引用
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作者 Zi-Jun Huang Zhen-Ying Zheng +3 位作者 Hua-Wei Cao Jian Wang Qing-Feng Zhang Sheng-Li Chen 《电化学（中英文）》 CAS 北大核心 2026年第6期10-20,共11页
Carboxymethyl cellulose(CMC)is a water-processable binder widely used for graphite anodes.However,a microscop-ic understanding of why the identity of CMC counterions(Li+/Na+/K+)strongly affects electrode perf... Carboxymethyl cellulose(CMC)is a water-processable binder widely used for graphite anodes.However,a microscop-ic understanding of why the identity of CMC counterions(Li+/Na+/K+)strongly affects electrode performance remains limited.Here,molecular dynamics(MD)simulations are used to track Li+transport accessibility across electrolyte/CMC/graphite three-phase interfaces,comparing pure CMC-Li,CMC-Na,CMC-K,and mixed-counterion CMC binders.We find that CMC-Li sustains a continuous Li+transport pathway from the electrolyte through the binder phase toward graphite.In contrast,in CMC-Na and CMC-K,Na+/K+ions preferentially enrich at the graphite/binder interface,forming a cation-enriched interfacial layer which reduces Li+accessibility to graphite.Partial replacement of Na+/K+in CMC-Na and CMC-K with Li+weakens this interfacial blocking effect and increases Li+accessibility.Furthermore,a stage-resolved kinetic anal-ysis visualizes the progressive suppression of Li+crossing the binder phase upon the barrier layer formation.These results provide a microscopic rationale for the experimentally observed performance advantage of CMC-Li over CMC-Na and CMC-K binders. 展开更多
关键词 Carboxymethyl cellulose binder Graphite anode Binder counterions Interfacial ion transport Cation-enriched interfacial barrier
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The role of dissolved metal ions in rare earth mineral flotation:A review 认领 引用
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作者 Isaac Douglas Manoj Mohanty 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第6期1668-1692,I0001,共25页
Rare earth minerals(REMs)such as bastnaesite and monazite are the primary sources of light rare earth elements critical to modern technologies and clean energy applications.Froth flotation remains the most widely used... Rare earth minerals(REMs)such as bastnaesite and monazite are the primary sources of light rare earth elements critical to modern technologies and clean energy applications.Froth flotation remains the most widely used and effective method for their beneficiation.However,dissolved metal ions-introduced through gangue mineral dissolution or recycled process water-can significantly influence flotation performance through complex,pH-dependent inte ractions with mineral surfaces and flotation reagents.This review examined the effects of key trivalent ions(Fe3+,Al3+,La3+),divalent ions(Ca2+,Mg2+,Sr2+,Ba2+,Co2+,Pb2+),and anionic species(F-,SO42-)on th e flotation behavior of bastnaesite and monazite.While many of these ions are known to depress flotation under specific pHdependent conditions,others enhance recovery depending on the interplay between pH and collector chemistry.Specifically,Fe3+and La3+promote monazite flotation under mildly alkaline conditions(pH8-9),whereas Pb2+,Ba2+,Co2+,and Fe3+enhance bastnaesite flotation in similar pH ranges.Ca2+and Fe3+exhibit dual roles-either depressing or activating bastnaesite flotation-depending on their interactions with collectors and the prevailing pH.In particular,Ca2+has been shown to cause unintended synergistic depression of target minerals when combined with depressants such as sodium silicate under alkaline pH conditions(pH 8-9).By emphasizing the pH-sensitive and reagent-specific behavior of metal ions,this review highlights the need for improved unavoidable metal ion control strategies in REM flotation circuits.It also identifies key research gaps in understanding solution-phase ion-reagent interactions and multi-ion effects.Addressing these challenges is essential for developing more selective,efficient,and sustainable flotation processes-offering practical guidance for the rare earth processing industry. 展开更多
关键词 Flotation Rare earths Metal ions Adsorption pH Gangue species
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Macrocycle-confined dimeric cobalt-porphyrin for boosted transport of anions 认领 引用
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作者 Fei Zeng Xinrui Pan +3 位作者 Zihong Yang Jie Shen Wenju Chang Huaqiang Zeng 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期568-572,共5页
We demonstrate here a macrocyclic host capable of simultaneously binding two Co2+-porphyrin complexes in its adaptive giant cavity.Such a geometrically confined porphyrin dimer promotes highly efficient transport o... We demonstrate here a macrocyclic host capable of simultaneously binding two Co2+-porphyrin complexes in its adaptive giant cavity.Such a geometrically confined porphyrin dimer promotes highly efficient transport of anions across the lipid membrane by virtue of dynamic metal-anion bonding interactions,which is in sharp contrast to the most studied class of anionphores that mediates anion transport through intermolecular H-bonds.The transport activity increases in the order of Br−,Cl−,ClO4−and NO3−,with the corresponding EC50 values of 0.57,0.69,0.74 and 1.30 μmol/L,and transport rate enhancements by up to∼35 folds over the monomeric Co2+-porphyrin complex.The determined binding constants suggest 1-mediated cooperative binding toward G3 molecules might account for the unique behavior by Co2+with respect to other metal ions. 展开更多
关键词 Supramolecular chemistry Ion transport Giant macrocycle Adaptive cavity Confined metalloporphyrin
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Potassium storage in 2D layered TMD anode:Unraveling structure-performance correlations via rational microstructure design 认领 引用
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作者 Lina Ge Yongpeng Cui +10 位作者 Zhijian Qiu Yuting Wang Chong Xu Xiuli Gao Pengyun Liu Xuejin Li Wen Li Qingzhong Xue Yajun Wang Yongfeng Li Wei Xing 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第6期254-276,I0008,共23页
Two-dimensional(2D)layered transition metal dichalcogenide(TMD)materials are promising hosts for potassium-ion storage,as their unique interlayer structures can well accommodate large-sized K+.However,their inherent d... Two-dimensional(2D)layered transition metal dichalcogenide(TMD)materials are promising hosts for potassium-ion storage,as their unique interlayer structures can well accommodate large-sized K+.However,their inherent drawbacks,including poor electrical conductivity,easy self-aggregation,and severe volumetric strain after intensive potassiation,often lead to inferior rate performance and rapid capacity decay that hinder their practical application.To address these critical challenges,numerous structural design strategies have been developed,such as dimensional regulation,layer structure design,defect engineering,and heterogeneous composite construction.Nevertheless,a systematic summary linking microstructure optimization,potassium storage mechanisms,and structure-performance relationships is still lacking.This review aims to fill this gap by overviewing advances in TMD-based anodes,clarifying intrinsic potassium storage mechanisms(intercalation-conversion),and emphasizing structureperformance correlation for rational design.Furthermore,specific future research directions are proposed,including integrated interface engineering,optimized layer structure design,and construction of novel heterostructures.This review is anticipated to enhance the recognition of 2D layered TMD potassium storage and promote the advancement of potassium-ion battery technology. 展开更多
关键词 Transition metal dichalcogenide Potassium ion battery Layer structure Microstructure design Potassium storage mechanism
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Designing fluorite structured samarium doped bismuth yttrium oxide perovskites based high-performance electrodes for advanced supercapacitor applications 认领 引用
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作者 Sana Ullah Asif Asif Ali Haider +2 位作者 Shihong Zhang Xinjian Chen Shuangbao Wang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第4期1231-1243,I0007,共13页
The need for long-lasting,inexpensive energy storage devices with large capacities has increased alongside the development of new technologies.However,new materials with excellent performance and alternative strategie... The need for long-lasting,inexpensive energy storage devices with large capacities has increased alongside the development of new technologies.However,new materials with excellent performance and alternative strategies need to be discovered yet,such as the application of oxide ion conductors in supercapacitor technology,which has not been explored recently.For the purpose,we fabricated new solid electrolyte-based nanocomposites(Bi3Y1-xSmxO6)with nominal x-values through a simple solid state reaction route.Structural patterns confirm the phase,while morphology verifies the uniformly dispersed nanostructures across the material with roughly platelet-like shapes.The X-ray photoelectron spectroscopy(XPS)portrays presence of each constituent with oxidation states and more vacancies.IRreflectance spectroscopy was utilized to measure phonons vibrational behavior and optical trends of the Bi3Y1-xSmxO6nanocomposites.The optimal composition shows the increased surface area and well distributed pore size as compared to parent sample.Electrochemical performance proposes the excellent specific capacitance(Csp)of 1150.24 F/g at 1 A/g with excellent cyclic stability(92.4%cyclic retention over 8000 cycles)for Bi3Y0.80Sm0.20O6 nanocomposite.The assembled asymmetric supercapacitor device for Bi3Y0.80Sm0.20O6nanocomposite reveals specific capacitance of 702.45 F/g at 1 A/g with high energy density(24.36 Wh/kg)and excellent power density(2344.13 W/kg),with 82.87%capacitive retention throughout 8000 cycles.Furthermore,the asymmetrical solid-state supercapacitor shows remarkable capacitive performance,allowing to energize a single light-emitting diode(LED)for over 47 s proving its workability for physical applications.The results provide strong evidence of the device's exceptional reliability for energy storage applications. 展开更多
关键词 Supercapacitors Phonon behavior Oxygen ion conductors Energy storage Electrochemical performance Rare earths
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Molecular Investigations on the Diffusion of Hydrated Ions and Its Effects on the Plastic Deformation of Ultra-high Molecular Weight Polyethylene at Seawater Condition 认领 引用
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作者 Qi-Hao Cheng Ting Zheng +1 位作者 Gang Yang Hui-Chen Zhang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第1期299-313,I0019,共15页
Ultra-high molecular weight polyethylene(UHMWPE)is a key material for marine applications owing to its outstanding self-lubrication and corrosion resistance.However,its long-term performance is compromised by plastic ... Ultra-high molecular weight polyethylene(UHMWPE)is a key material for marine applications owing to its outstanding self-lubrication and corrosion resistance.However,its long-term performance is compromised by plastic deformation in seawater.In this study,we performed a comparative analysis of the UHMWPE dynamics under seawater and water conditions to investigate the plastic deformation of UHMWPE induced by seawater.The results show that the plastic deformation of UHMWPE is amplified in seawater relative to the water conditions.Under thin fluid conditions,frictional interfaces exhibit a higher interfacial friction force and interaction energy in seawater than in water.Compared to freely diffused water molecules,hydrated ions occupy larger interchain spaces within polyethylene.Furthermore,the diffusion of hydrated ions weakens the interchain interactions,promoting more severe polyethylene chain rearrangement and accelerating seawater-induced plastic deformation in UHMWPE during friction.Furthermore,the diffused seawater accelerated the disentangling of the polyethylene chains and enhanced the orderly orientation distribution of polyethylene.Compared to free water molecules,the water molecules of hydrated ions exhibit enhanced attraction to free-flowing water molecules,thereby accelerating seawater flow across submerged UHMWPE surfaces.This flow enhancement promotes surface polyethylene chain mobility in seawater. 展开更多
关键词 Ultra-high molecular weight polyethylene Plastic deformation Seawater Hydrated ion Molecular dynamics
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