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Amino acid assisted aqueous synthesis of highly stable CsPbBr_(3)nanocrystals for cell imaging

Nano Research 2025年第1期18卷 675-683页

作者： Xue Li Yanan Guo Guoying Tan Qingyi Liu Nan Song Yu Tang State key laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China State key laboratory of Baiyunobo Rare Earth Resource Researches and comprehensive utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Lead halide perovskite nanocrystals(NCs)exhibit excellent optoelectronic performance and have drawn great interests in the fields of biological imaging and ***,the poor stability of CsPbX_(3)(X=Cl,Br,I)in water is still a challenge to hinder their practical *** this work,a facile strategy has been developed for aqueous synthesis of CsPbX_(3) nanocrystals,in which L-glutamic acid(LGlu)has been used to replace oleic acid in the synthetic *** from the synergic effects of L-Glu and oleylamine(OAm),CsPbBr_(3)nanocrystals(L-Glu/OAm-CsPbBr_(3)NCs)with high water stability have been directly prepared under a mild condition at room temperature in water,facilitated by the process of crystal phase transformation from Cs_(4)PbBr_(6) to CsPbBr_(3).L-Glu/OAm-CsPbBr_(3)NCs exhibit a high quantum yield of 85%and a narrow full width at half maximum of 16 nm,demonstrating their efficient luminescence in ***,L-Glu on the surface have contributed greatly to an acidic environment and passivation of surface defects,improving the water stability and dispersibility of CsPbBr_(3)***,L-Glu/OAm-CsPbBr_(3)NCs exhibit great biocompatibility due to the presence of L-Glu,resulting in their good performance for HeLa cell ***,we propose a facile and effective method to prepare CsPbBr_(3)nanocrystals with excellent water stability by using L-Glu and OAm as cooperated ligands and expand their application in cell imaging.

关键词： aqueous synthesis cell imaging lead halide perovskite nanocrystals L-glutamic acid phase transformation

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Boosting hydrocarbon conversion via Cu-doping induced oxygen vacancies on CeO2 in CO2 electroreduction

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Journal of Energy Chemistry 2025年第1期100卷 66-76页

作者： Lei Xue Tong Shi Chenhui Han Heng Zhang Fenrong Liu Haorun Li Yan Wang Xiaojun Gu Shanghong Zeng Inner Mongolia key laboratory of Chemistry and Physics of Rare Earth Materials School of Chemistry and Chemical Engineering Inner Mongolia University State key laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Institute of Catalysis Department of Chemistry Zhejiang University National key laboratory of Baiyunobo Rare Earth Resource Research and comprehensive utilization Baotou Research Institute of Rare Earths

Conversion of CO2back to hydrocarbons is the most direct way of closing the“carbon cycle”,and its significance is further enlarged if this process is driven by renewable energies such as ***,precisely controlling the product selectivity towards hydrocarbons against the competitive hydrogen evolution remains challenging,especially for Cu-based ***,we report a novel defect engineering strategy,by which Cu-doping-induced oxygen vacancies on CeO2nanorods were effectively created,with adjustable vacancy/Cu *** resulting optimum catalyst shows up to 79% catalytic current density to hydrocarbons （excluding CO）,with 49% faradaic efficiency to *** and density functional theory unveil that the ratio between oxygen vacancy and Cu affects significantly the formation of*CHO and activation of H2O,which leads to the following deep hydrogenation to *** findings may spur new insights for designing and developing more controllable chemical process relevant to CO2utilization.

关键词： Oxygen vacancy Hydrocarbon production Reaction mechanism

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Crystal Structure and Antimicrobial Properties of Rare Earths Aryl-acylhydrazone Complexes under Microwave Irradiation

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Chinese Journal of Structural Chemistry 2018年第4期37卷 557-563页

作者：狄燕清刘永亮邸友莹周春生任有良李勉琦 College of Chemical Engineering and Modern Materials/shaanxi key laboratory of comprehensive utilization of tailings resources Shangluo University

2-Carbonyl propionic acid-4-methyl benzoyl hydrazone （PAMH） has been synthe-sized by using 4-methyl benzoyl hydrazine and pyruvic acid as the chemicals and acetic acid asphase transfer catalyst under microwave radiation. Then the PAMH and TbCl3·6H20 are placed inthe methanol/acetone/water （3：2：4） mixture for coordination reaction, getting the Schiff complexTb（PAMH）3. The crystal structure is characterized by elemental analysis, X-ray Diffraction （XRD）and infrared spectrum. The compound crystallizes in the monoclinic space group P21/n, with a =1.4770（4）, b = 1.2864（3）, c = 1.9287（5） nm, β= 92.06（3）°, V= 3.6623（15） nm3 and Z= 4. Tb（Ⅲ） ionis nona-coordinated by three completely deprotonated PAMH ligands in a tricapped trigonal prismgeometry, leaving a zero-dimensional mononuclear configuration. The optical properties and thermalstability are studied by ultraviolet spectrum, fluorescence spectra and thermogravimetric analysis（TGA）. The antibacterial activities of the ligand and rare-earth complex are preliminarily studied,and found they have certain antibacterial activity on fusarium solani, and the complex is obviouslymore effective in suppressing fusarium solani than the ligand.

关键词： microwave irradiation technology Schiff base lanthanide complex antibacterial activity

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State key laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State key laboratory of Marine resources utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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Magnetic separation of pentlandite from serpentine by selective magnetic coating

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International Journal of Minerals,Metallurgy and Materials 2019年第1期26卷 1-10页

作者： Ji-wei Lu Zhi-tao Yuan Xiao-fei Guo Zhong-yun Tong Li-xia Li School of resources and Civil Engineering Northeastern University shaanxi key laboratory for the comprehensive utilization of tailings resources Shangluo University School of Mining Engineering University of Science and Technology Liaoning

In this study, pentlandite was selectively separated from serpentine using magnetic coating technology by adjusting and optimizing pH, stirring speeds, magnetic field intensities, and dosages of sodium hexametaphosphate(SHMP) and sodium oleate(SO). A magnetic concentrate with Ni grade of 20.8% and Ni recovery of 80.5% was attained under the optimized operating conditions. Considering the above, the adsorption behaviors of SHMP and SO and the surface properties of minerals after the magnetic coating were studied by Fourier transform infrared(FTIR) spectroscopy, X-ray diffraction(XRD), and scanning electron microscopy(SEM). The results show that magnetite was preferentially coated on the pentlandite surfaces and sparingly coated on the serpentine surfaces in the presence of SHMP and SO. Furthermore, calculations by Derjaguin-Landau-Verwey-Overbeek(DLVO) theory indicate that the preferential adsorption of magnetite on the pentlandite surfaces is due to the presence of a hydrophobic interaction between the magnetite and pentlandite, which is much stronger than the interaction between magnetite and serpentine.

关键词： dispersant coagulant magnetic coating magnetic separation hydrophobic interaction

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Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal resources and New Materials key laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

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Recovery of vanadium and molybdenum from spent petrochemical catalyst by microwave-assisted leaching

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International Journal of Minerals,Metallurgy and Materials 2019年第1期26卷 33-40页

作者： Zhi-yuan Ma Yong Liu Ji-kui Zhou Mu-dan Liu Zhen-zhen Liu Guangdong Institute of resources comprehensive utilization Guangdong Academy of Sciences State key laboratory of Separation and comprehensive utilization of Rare Metals Guangdong Provincial key laboratory of Development and comprehensive utilization of Mineral resources

The study of the leaching of vanadium(V) and molybdenum(Mo) from spent petrochemical catalysts in sodium hydroxide(NaO H) medium was performed using two approaches, namely, conventional leaching and microwave-assisted leaching methods. The influence of microwave power, leaching time, leaching temperature, and NaOH concentration on the leaching efficiency of spent petrochemical catalyst was investigated. Under microwave-assisted conditions(600 W, 10 min, 90°C, 2.0 mol·L^(-1) NaOH, and 0.20 g·mL^(-1) solid–liquid ratio), the leaching efficiencies of V and Mo reached 94.35% and 96.23%, respectively. It has been confirmed that microwave energy has considerable potential to enhance the efficiency of the leaching process and reduce the leaching time. It is suggested that the enhancement of the leaching efficiencies of V and Mo can be attributed to the existence of a thermal gradient between solid and liquid and the generation of cracks on the mineral surface.

关键词： microwave spent petrochemical catalyst vanadium molybdenum

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Green, sustainable and massive synthesis of sodium vanadate nanowires toward industrialization

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Progress in Natural Science:Materials International 2023年第6期33卷 918-923页

作者： Wei Ni ANSTEEL Research Institute of Vanadium & Titanium (Iron & Steel) State key laboratory of Vanadium and Titanium resources comprehensive utilization

One-dimensional(1D) layered materials combine the advantages of layered materials and 1D nanomaterials,which has attracted intense interest not only in the academic research but also in the industrial *** sodium vanadate nanowires have received incremental attention due to the high capacity and enhanced electrical conductivity for promising advanced energy storage and conversion. However, the mass production of these 1D layered vanadium vanadates(1D NVO) are still of great challenge and the further scalable application in energy storage and conversion systems are hampered. Herein, we developed a facile, non-hydrothermal, green synthesis strategy for scalable, mass production of layered vanadium vanadate nanowires and their assemblies such as membranes, blocks, grains, powders toward industrial scale. It will pave a way for the industrial production of 1D inorganic materials and give a new insight into the fabrication of nanostructured materials beyond commercialized 1D/2D nanomaterials including carbon nanotubes(CNT) and layered double hydroxides(LDH).

关键词： Sodium vanadate nanowires Mass production Vanadium-based Barnesite 1D nanomaterials Self-assembly Nanowire membrane Green synthesis

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Syntheses,Crystal Structures and Biological Activities of Three New Schiff Bases Derived from Substituted Salicylaldehyde and Tris Base

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Chinese Journal of Structural Chemistry 2017年第11期36卷 1797-1802页

作者：李中燕贾国凯袁霖白鹏飞何花周勤 key laboratory of comprehensive utilization of Advantage Plants resources in Hunan South Hunan University of Science and Engineering

Three new o-hydroxy Schiff bases, L1, L2 and L3, were derived from the 1：1 M condensation of substituted salicylaldehyde with tris base and were characterized by FT-IR, ^1H NMR and ^13C NMR spectroscopies. The crystal structure of L1 was also determined by single-crystal X-ray analysis, and it exists as a zwitterionic form in the solid state, with the H atom of the phenol group being transferred to the imine N atom. It adopts an E-configuration about the central C=N double bond. In addition, the biological activity assay was carried out and the results show that the Schiff-base compounds have a diverse range of biological activities against the fungi tested, which suggests great potential applications in antifungal fields in the future.

关键词： Schiff base, crystal, biological activity

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Ecological Allocation of Plants in Ecological Restoration of the Danjiang River Basin

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Meteorological and Environmental Research 2019年第3期10卷 33-36页

作者： Zhang Jiarong shaanxi key laboratory of comprehensive utilization of tailings resources Shangluo University

As the water source of central route of China's south-to-north water diversion project,the Danjiang River Basin shoulders a major historical ***,it is imperative to perform ecological restoration for control of water and soil loss and improvement of the ecological *** this paper,based on the current status of research on ecological restoration at home and abroad,the layout principles of ecological restoration and functional traits of plants were ***,the principles and methods of plant selection in ecological restoration engineering were determined,and the ecological allocation plan of plants in ecological restoration for soil and water conservation in the Danjiang River Basin was proposed according to the specific conditions of the Danjiang River *** provides reference for the ecological restoration and the sustainable development of the ecological environment in the Danjiang River Basin,and can also be used in other similar projects.

关键词： The Danjiang River Basin Ecological restoration Ecological allocation

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