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International Journal of Minerals,Metallurgy and Materials 2023年第11期30卷 2169-2181页

作者： Jinxiang You Jing Wang Mingjun Rao Xin Zhang Jun luo Zhiwei Peng Guanghui Li school of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China College of chemistry and chemical engineering Central South UniversityChangsha 410083China

To realize the comprehensive utilization of ludwigite ore,an integrated and efficient route for the boron and iron separation was proposed in this work,which via soda-ash roasting under CO–CO_(2)–N_(2) atmosphere followed by grind-leaching,magnetic separation,and CO_(2) *** effects of roasting temperature,roasting time,CO/(CO+CO_(2))composition,and Na_(2)CO_(3) dosage on the boron and iron separation indices were primarily *** the optimized conditions of the roasting temperature of 850℃,roasting time of 60 min,soda ash dosage of 20 wt%,and CO/(CO+CO_(2)) of 10 vol%,92%of boron was leached during wet grinding,and 88.6%of iron was recovered during the magnetic separation and magnetic concentrate with a total iron content of 61.51 wt%.Raman spectra and^(11)B NMR results indicated that boron exists asB(OH)_(4)^(-) in the leachate,from which high-purity borax pentahydrate could be prepared by CO_(2) carbonation.

关键词： ludwigite ore soda-ash roasting CO-CO_(2)-N_(2)atmosphere borax

Kinetics study on leaching of rare earth and aluminum from polishing powder waste using hydrochloric acid

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Journal of Rare Earths 2020年第9期38卷 1009-1018,I0004页

作者： Xitao Wu Zhijian Wang Chuping Xia Xuefeng Shi Tianzong luo Xinjun Bao Rongli Liu Shengzhong Xie Hunan Rare Earth Metal Material Research Institute Changsha 410126China school of chemistry and chemical engineering Central South UniversityChangsha 410083China Hunan Nonferrous Metals Vocational and Technical College Zhuzhou 412006China

In this study,a novel hydrometallurgical process consisting of hydrochloric acid three-stage countercurrent leaching and solvent extraction was proposed to recover rare earth oxide(REO)from the rare earth polishing powder waste(REPPW).The effects of HCl concentration,liquid-solid ratio(L/S ratio),temperature and time on the leaching yields of rare earths(in REO)and aluminum(in Al2O3)were *** result shows that the leaching yields of REO and Al2O3 are 90.96%and 43.89%respectively under the optimum leaching parameters of HCl concentration=8.00 mol/L,L/S ratio=4 mL/g,leaching temperature=353 K and leaching time=180 ***,the leaching kinetics of REO and Al2O3 were investigated in this *** leaching behaviors of REO and Al2O3 follow a shrinking sphere/core model and the general leaching process is controlled by the surface chemical *** leaching activation energies of REO and Al2O3 are 9.86 and 13.68 kJ/mol,*** leaching yield of each substance in three-stage countercurrent leaching is improved substantially compared with single-stage leaching,with a change from 90.96%to 95.38%for REO and from 43.89%to 46.22%for Al2O3,***,the total concentration of REO in three-stage countercurrent leaching solution is greatly increased to above 300 g/L,and the acidity of which is decreased to ***=2,which is conducive to subsequent solvent extraction *** purity REO(99.92%)is obtained by solvent extraction separation,oxalate precipitation and *** total recovery yield of REO is 85.13%.

关键词： Rare earth polishing powder waste REPPW Three-stage countercurrent leaching Solvent extraction Kinetics study Thermodynamics

Van der Waals heterostructure engineering by 2D space-confinement for advanced potassium-ion storage

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Nano Research 2021年第11期14卷 3854-3863页

作者： Bi luo Peng Wu Jiafeng Zhang Liang Cao Chunhui Wang Bin Lu Bao Zhang Xing Ou National engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China Key Laboratory on Fuel Cell Technology of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510641China Institute of Advanced Magnetic Materials College of Materials&Environmental EngineeringHangzhou Dianzi UniversityHangzhou310018China

Molybdenum disulfide (MoS_(2)) has received enormous attentions in the electrochemical energy storage due to its unique two-dimensional layered structure and relatively high reversible capacity. However, the application of MoS_(2) in potassium-ion batteries (PIBs) is restricted by poor rate capability and cyclability, which are associated with the sluggish reaction kinetics and the huge volume expansion during K+ intercalation. Herein, we propose a two-dimensional (2D) space confined strategy to construct van der Waals heterostructure for superior PIB anode, in which the MoS_(2) nanosheets can be well dispersed on reduced graphene oxide nanosheets by leveraging the confinement effect within the graphene layers and amorphous carbon. The strong synergistic effects in 2D van der Waals heterostructure can extremely promote the electron transportation and ions diffusion during K+ insertion/extraction. More significantly, the 2D space-confinement effect and van der Waals force inhibit polysulfide conversion product dissolution into the electrolyte, which significantly strengthens the structural durability during the long-term cycling process. As anticipated, the as-synthesized the “face-to-face” C/MoS_(2)/G anode delivers remarkable K-storage performance, especially for high reversible capacity (362.5 mAh·g^(-1) at 0.1 A·g^(-1)), excellent rate capability (195.4 mAh·g^(-1) at 10 Ag^(-1)) and superior ultrahigh-rate long-cycling stability (126.4 mAh·g^(-1) after 4000 cycles at high rate of 5 A·g^(-1)). This work presents a promise strategy of structure designing and composition optimization for 2D layered materials in advanced energy storage application.

关键词： van der Waals heterostructure space confinement molybdenum disulfide anode materials potassium-ion batteries

Multidisciplinary and multiscale nanoscience research roadmap based on large scientific facilities

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Science china chemistry 2024年第8期67卷 2497-2523页

作者： Yuan Zeng Shuhan Zhang Yuecong Guo Yalin Cong Xu Ding Peihua Li Yunxiang Lin Wenzhi Ren Hui Su Weigang Sun Liuxin Xu Guikai Zhang Shihua Chen Yu Chen Weiren Cheng Shengqi Chu Yong Guan Jinru Han Jie Lin Hengjie Liu Zheyi Liu Pan luo Fanchun Meng Sicong Qiao Zongyin Song Ying Wang Zhao Wu Chenyu Yang Meng Yang Shirui Yang Zi Yin Zhibin Yin Pengjun Zhang Hongyu Zhang Pingping Zheng Jia Zhou Wanlin Zhou Pengfei An He Cheng Chunhai Fan Xingjiu Huang Yong Lei Lina Li Mu Li Qinghua Liu Shuming Peng Li Song Zhihu Sun Yangchao Tian Fangjun Wang Lihua Wang Liming Wang Shiqiang Wei Aiguo Wu Chunlei Xiao Xueming Yang Panchao Yin Jing Zhang Mingxin Zhang Yaling Wang Chunying Chen CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety New Cornerstone Science LaboratoryNational Center for Nanoscience and TechnologyBeijing 100190China university of Chinese Academy of Sciences Beijing 100049China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology Zhejiang International Cooperation Base of Biomedical Materials Technology and ApplicationCAS Key Laboratory of Magnetic Materials and DevicesNingbo Cixi Institute of Biomedical EngineeringZhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China College of chemistry and chemical engineering Hunan Normal UniversityChangsha 410081China State Key Laboratory of Luminescent Materials and Devices South China Advanced Institute for Soft Matter Science and TechnologySouth China University of TechnologyGuangzhou 510640China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Separation Sciences for Analytical chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Advanced Science Facilities Shenzhen 518107China State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Acade

With the advancement of modern science and technology, large scientific facilities are increasingly oriented toward demand and application, and can be used for basic research as well as serving multiple disciplines. Developing large scientific facilities and related analytical technologies enhances understanding of large scientific facilities and popularizes their application in research across multiple disciplines. The combination of light or neutron sources from large scientific facilities and advanced analytical technologies can be achieved for materials structure information, dynamics study of chemical reactions, high dissociation of biomolecules, 3D visualization of energy materials or biological samples, etc. We first introduce the progress of domestic large scientific facilities of synchrotron radiation(SR) and free electron lasers(FELs) with different wavelengths and neutron *** further discuss the comparison between Chinese and typical foreign facilities in X-ray radiation from X-ray tubes, synchrotrons, X-ray FELs, and neutron sources based on physical parameters of light and neutron sources. In addition, we focus on the technological progress and perspectives combined with advanced X-ray radiation and neutron sources of large scientific facilities in china, especially in the nanoscience fields of energy catalysis and biological science. We hope that this roadmap will provide references on technology and methods to experimental users, as well as prospects for future development of technologies based on large research infrastructure facilities. Comprehensive studies and guidelines for basic research to practical application in various disciplines can be made with the assistance of large scientific facilities.

关键词： large scientific facilities synchrotron radiation FEL light sources neutron sources spectroscopic analysis methods X-ray imaging techniques structural information chemical dynamics

Studies on the Synthesis, Crystal Structure and Quantum chemistry of Di(o-cyanobenzyl)tin Bis(quinoline-2-carboxylate)

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Chinese Journal of Structural chemistry 2008年第2期27卷 220-224页

作者： KUANG Dai-Zhi JIANG Jiang-Ping ZHANG Fu-Xing WANG Jian-Qiu luo Yi-Ming FENG Yong-Lan Department of chemistry and Materials Science Hengyang Normal University Hengyang 421008 China school of chemistry and chemical engineering Central South University Changsha 410083 China

Di（o-cyanobenzyl）tin bis（quinoline-2-carboxylate） was synthesized by the reaction of tri（o-cyanobenzyl）tin chloride with quinoline-2-carboxylic acid. The molecular structure of the compound was characterized by elemental analysis, IR, 1H NMR and X-ray diffraction. Crystal data for the compound： tficlinic, space group P1, a = 0.80734（7）, b = 1.00681（9）, c = 1.04811（9） nm, a = 81.7570（10）, β = 7.7240（10）,γ = 81.2850（10）°, V = 0.77581（12） nm3, Z = 1, Dc = 1.488 g/cm3, μ（MoKa） = 0.870 mm^-1 and F（000） = 350. The final R= 0.0204 and wR= 0.0530 for 2677 observed reflections with I 〉2σ（I）, and R = 0.0208 and wR = 0.0532 for all reflections. The molecular structure adopts a distorted octahedral geometry around the Sn atom. The title compound molecules are connected via hydrogen bonding interactions to form a 3D network structure. Quantum chemistry calculation study on the title compound has been performed by means of G98W package at the Lanl2dz basis set. The stability of the compound, orbital energies and some frontier molecular orbital composition characteristics have also been investigated.

关键词： di(o-cyanobenzyl)tin bis(quinoline-2-carboxylate) synthesis crystal structure

Aerophilic Triphase Interface Tuned by Carbon Dots Driving Durable and Flexible Rechargeable Zn‑Air Batteries

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Nano-Micro Letters 2023年第2期15卷 238-258页

作者： Kuixing Ding Yu Ye Jiugang Hu Liming Zhao Wei Jin Jia luo Shan Cai Baicheng Weng Guoqiang Zou Hongshuai Hou Xiaobo Ji College of chemistry and chemical engineering Central South UniversityChangsha 410083People’s Republic of China College of Standardization China Jiliang UniversityHangzhou 310018People’s Republic of China school of Environmental Science and engineering Suzhou University of Science and TechnologySuzhou 215009People’s Republic of China

Efficient bifunctional catalysts for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)are vital for rechargeable Zn-air batteries(ZABs).Herein,an oxygen-respirable sponge-like Co@C–O–Cs catalyst with oxygen-rich active sites was designed and constructed for both ORR and OER by a facile carbon dot-assisted *** aerophilic triphase interface of Co@C–O–Cs cathode efficiently boosts oxygen diffusion and *** theoretical calculations and experimental studies revealed that the Co–C–COC active sites can redistribute the local charge density and lower the reaction energy *** Co@C–O–Cs catalyst displays superior bifunctional catalytic activities with a half-wave potential of 0.82 V for ORR and an ultralow overpotential of 294 mV at 10 mA cm^(−2) for ***,it can drive the liquid ZABs with high peak power density(106.4 mW cm^(−2)),specific capacity(720.7 mAh g^(−1)),outstanding long-term cycle stability(over 750 cycles at 10 mA cm^(−2)),and exhibits excellent feasibility in flexible all-solid-state *** findings provide new insights into the rational design of efficient bifunctional oxygen catalysts in rechargeable metal-air batteries.

关键词： Aerophilic triphase interface Oxygen-rich active sites O2 diffusion Bifunctional oxygen catalyst Flexible rechargeable Zn-air battery

Template sacrificial controlled synthesis of hierarchical nanoporous carbon@NiCo_(2)S_(4)microspheres for high-performance hybrid supercapacitors

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稀有金属:英文版 2023年第8期42卷 2643-2657页

作者： Kai Yuan Teng-Jia Gao Yang Yang Wang luo Shun Li Chao-Yang Zhang Jian-Xiong Xu Na Li Yi-Rong Zhu Hunan Key Laboratory of Electrochemical Green Metallurgy Technology College of Materials and Advanced ManufacturingHunan University of TechnologyZhuzhou 412007China Hunan Key Laboratory of Biomedical Nanomaterials and Devices College of Life Sciences and ChemistryHunan University of TechnologyZhuzhou 412007China school of Metallurgy and Environment Central South UniversityChangsha 410083China

Binary transition metal sulfides are hotly investigated in advanced energy storage devices because of their ultra-high reversible ***,the unsatisfied rate capability and cycling stability still hinder their practical ***,hierarchical nanoporous carbon@NiCo_(2)S_(4)(HNCMs@NCS)composites with coreshell flower-like structures were prepared by in situ growing of NiCo_(2)S_(4) nanosheets on HNCMs through a hydro thermal-as sis ted template sacrificial *** from a synergistic effect between the NiCo_(2)S_(4)shell with high specific capacity and the HNCMs with unique porous structure,the synthesized flower-like HNCMs@NCS composites exhibit extraordinary electrochemical performances,including a high capacity of 346.9 mAh·g^(-1)at 1 A·g^(-1),superb rate property with86.4%initial capacity at 30 A·g^(-1)and predominant cycle stability with 81.2%capacity retention after 5000 ***,the resulting HNCMs@NCS cathode was coupled with the chemical-activated HNCMs(AHNCMs)anode to construct a hybrid supercapacitor *** asfabricated device exhibits superior energy density(49.9 Wh·kg^(-1)at 802 W·kg^(-1))and ultra-high power density(24 kW·kg^(-1)at 29.5 Wh·kg^(-1)).This fascinating result further demonstrates the tremendous prospect of the synthesized HNCMs@NCS composites as high-performance supercapacitor electrode materials.

关键词： Hybrid supercapacitors(HSCs) NiCo_(2)S_(4) Hierarchical nanoporous carbon(HNC) Template sacrificial method

Regulating ethane and ethylene synthesis by proton corridor microenvironment for CO_(2) electrolysis

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Journal of Energy chemistry 2023年第12期87卷 368-377,I0010页

作者： Xiaowen Zhang Bohua Ren Hao Li Shuxuan Liu Haoyang Xiong Silong Dong Yifan Li Dan luo Yi Cui Guobin Wen Xin Wang south china Academy of Advanced Optoelectronics International Academy of Optoelectronics at ZhaoqingSouth China Normal UniversityGuangzhou 510006GuangdongChina Department of chemical engineering Waterloo Institute for NanotechnologyUniversity of Waterloo200 University Avenue WestWaterlooOntario N2L 3G1Canada school of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina i-lab Nano-X Vacuum Interconnected WorkstationSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina State Key Laboratory of Chem/Bio-Sensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical EngineeringNational Supercomputer Centers in ChangshaHunan UniversityChangsha 410082HunanChina

Electrocatalytic reduction of carbon dioxide is one of the most effective strategies to achieve carbon neutrality and energy *** high-value multi-carbon products have been widely studied,limited electrocatalysts have been reported for the selective conversion of *** importantly,the factors tuning the selectivity between ethane and ethylene have not been ***,Zn@Cu nanowire arrays(Zn@Cu-NWAs) catalyst is proposed to stimulate the maintenance of efficient CO_(2)-to-C_(2)H_(6) conversion at high current ***,in order to investigate the factors affecting the interconversion between ethane and ethylene,the counterpart catalyst that facilitates C–C coupling to ethylene was also ***-of-flight secondary-ion mass spectroscopy(TOF-SIMS),in-situ Raman spectroscopy,and simulation results show that Zn@Cu-NWAs can provide a localized proton corridor environment for the formation of ethane,accelerating the further proton-coupled CO_(2) reduction reaction(CO_(2)RR)***,this catalyst delivered an ethane Faraday efficiency of over 65% at-1.14 V *** with a total current density of 142.3 mA/cm^(2).This work provides a new perspective on regulating the local microenvironment to modify the selectivity of multi-carbon products.

关键词： Proton microenvironment CO_(2)reduction C2+product Selective conversion Cu-Zn materials

Graphene-based electrodes and catalysts for electroreduction of CO_(2)to low-carbon alcohols

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Materials Reports(Energy) 2023年第2期3卷 142-153,I0004页

作者： Lei Wang Patrick Lira Guangzhi Hu Jianmin luo Zhao Sun Richard Davis Yudai Huang Sam Toan Department of chemical engineering University of Minnesota-DuluthDuluthMN55812USA Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming650504China school of chemistry and Civil engineering Shaoguan UniversityShaoguan512005China school of Energy Science and engineering Central South UniversityChangsha410083China State Key Laboratory of chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi830017China

The electrochemical reduction of CO_(2)(CO_(2)ER)into the renewable and sustainable green fuels,such as low-carbon alcohols,is one of several workable ***_(2)ER can be combined with renewable electricity to transform intermittent energy sources(such as wind,hydro,and solar)into a fuel that can be stored until it is ready to be *** intrinsic characteristics of the employed catalyst have a significant and substantial effect on the efficiency of CO_(2)ER and the ensuing economic *** paradigmatic multicarbon alcohol catalysts should increase the concentration of*CO in the reaction environment,stabilize the key intermediate products during the reaction,and facilitate the C-C coupling *** graphene has a large surface area and exceptional conductivity,it has been used as a support for active phases(nanoparticles or nanosheets).It is possible for graphene to enhance charge transport and accelerate CO_(2)conversion through its electronic and structural coupling *** the interface,a synergy can be produced that improves CO_(2)ER by increasing*CO adsorption,intermediate binding,and *** article focuses on recent advancements in graphene-based catalysts that promote CO_(2)ER to ***,this paper also describes and discusses the key role graphene plays in catalyzing CO_(2)ER into ***,we hope to provide future ideas for the design of graphene-based electrocatalysts.

关键词： Graphene Electrocatalysts CO_(2)reduction Alcohol Electrode

Upcycling of phosphogypsum waste for efficient zinc-ion batteries

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Journal of Energy chemistry 2023年第6期81卷 157-166,I0006页

作者： Huanwen Wang Can luo Yinyin Qian Caihong Yang Xiaojun Shi Yansheng Gong Rui Wang Beibei He Jun Jin Aidong Tang Edison Huixiang Ang Huaming Yang engineering Research Center of Nano-Geomaterials of Ministry of Education China University of GeosciencesWuhan 430074HubeiChina Faculty of Materials Science and chemistry China University of GeosciencesWuhan 430074HubeiChina Key Laboratory of Functional Geomaterials in china Nonmetallic Minerals Industry China University of GeosciencesWuhan 430074HubeiChina College of chemistry and chemical engineering Central South UniversityChangsha 410083HunanChina Natural Sciences and Science Education National Institute of EducationNanyang Technological UniversitySingapore 637616Singapore school of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

Zinc metal is a promising anode material for next-generation aqueous batteries,but its practical application is limited by the formation of zinc *** prevent zinc dendrite growth,various Zn^(2+)-conducting but water-isolating solid-electrolyte interphase(SEI)films have been developed,however,the required high-purity chemical materials are extremely *** this work,phosphogypsum(PG),an industrial byproduct produced from the phosphoric acid industry,is employed as a multifunctional protective layer to navigate uniform zinc *** and experimental results demonstrate that PG-derived CaSO_(4)2H_(2)O can act as an artificial SEI layer to provide fast channels for Zn^(2+)***,CaSO_(4)2H_(2)O could release calcium ions(Ca^(2+))due to its relatively high Kspvalue,which have a higher binding energy than that of Zn^(2+)on the Zn surface,thus preferentially adsorbing to the tips of the protuberances to force zinc ions to nucleate at inert *** a result,the Zn@PG anode achieves a high Coulombic efficiency of 99.5%during 500 cycles and long-time stability over 1000 hours at 1 m A cm^(-2).Our findings will not only construct a low-cost artificial SEI film for practical metal batteries,but also achieve a high-value utilization of phosphogypsum waste.

关键词： Upcycling Phosphogypsum waste Zinc-ion battery Solid-electrolyte-interface Protection layer