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Interaction between water molecules and 3C-SiC nanocrystal surface

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Science China(Physics,Mechanics & Astronomy) 2014年第5期57卷 819-828页

作者： ZHAO PuQin ZHANG QiZhen wu xinglong National Laboratory of Solid State Microstructures Department of PhysicsNanjing University Department of Applied Physics Nanjing University of Technology Department of Physics Nanjing Normal University Laboratory of Modern Acoustics MOEDepartment of PhysicsNanjing University

The influence of water permeates almost all areas including biochemistry,chemistry,physics and is particularly evident in phenomena occurring at the interfaces of solid surface such as SiC nanocrystals,which are promising nanomaterials and exhibit unique surface chemical *** this paper,the quantum confinement effect and stability of 3C-SiC nanocrystals in aqueous solution as well as photoluminescence properties in water suspensions with different pH values are reviewed based on design and analysis of surface *** this basis,the significant progress of 3C-SiC nanocrystals in efficiently splitting water into usable hydrogen is summarized and the relative mechanisms are *** addition,the water-soluble 3C-SiC quantum dots as robust and nontoxic biological probes and labels also are introduced as well as future prospects given.

关键词： water 3C-SiC nanocrystals interactions

Progresses in Sustainable Recycling Technology of Spent Lithium-Ion Batteries

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Energy & Environmental Materials 2022年第4期5卷 1012-1036页

作者： Kaidi Du Edison Huixiang Ang xinglong wu Yichun Liu Faculty of Chemistry Northeast Normal UniversityChangchunJilin 130024China MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityChangchunJilin 130024China Natural Sciences and Science Education National Institute of EducationNanyang Technological UniversitySingapore 637616Singapore

The number of lithium-ion batteries(LIBs)is steadily increasing in order to meet the ever-growing demand for sustainable energy and a high quality of life for *** the same time,the resulting large number of LIB waste certainly poses safety hazards if it is not properly disposed of and will seriously harm the environment due to its inherent toxicity due to the use of toxic ***,the consumption of many scarce precious metal resources is behind the mass production of *** the light of severe environmental,resources,safety and recycling problems,recycling spent LIBs have become an essential urgently needed action to achieve sustainable social *** review therefore critically analyses the value and the need for recycling of spent LIBs from a variety of resources and the environment.A range of existing technologies for recycling and reusing spent LIBs,such as pretreatment,pyrometallurgy,hydrometallurgy,and direct recycled methods,is subsequently summarized *** addition,the benefits and problems of the methods described above are analyzed in *** also introduces recycling progress of other LIB components,such as anodes,separators,and electrolytes,as well as the high-value ***,the prospects for recycling LIBs are addressed in four ways(government,users,battery manufacturers,and recyclers).This review should contribute to the development of the recycling of used LIBs,particularly in support of industrialization and recycling processes.

关键词： cathode materials pretreatment recycling spent lithium-ion batteries valuable metals

Value-added recycling for spent lithium-ion batteries

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Science China Chemistry 2023年第8期66卷 2160-2162页

作者： Xiaotong Wang Zhenyi Gu xinglong wu MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityChangchun130024China Department of Chemistry Northeast Normal UniversityChangchun130024China

This highlight is based on a recent work by ***,***,*** and coworkers published in Nature Sustainability[1].This work blazes a new trail to recycle spent lithium-ion batteries(LIBs)by upcycling the exhausted cathode t... 详细信息

关键词： lithium cycling trail

Large-scale Ni-MOF derived Ni_(3)S_(2) nanocrystals embedded in N-doped porous carbon nanoparticles for high-rate Na+ storage

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Chinese Chemical Letters 2021年第2期32卷 895-899页

作者： Miao Yang Qiuli Ning Chaoying Fan xinglong wu National&Local United Engineering Lab for Power Battery Department of ChemistryNortheast Normal UniversityChangchun 130024China Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal UniversityChangchun 130024China

Metal organic framework(MOF) has been confirmed as the promising precursor to develop the conve rsion-typed anode mate rials of sodium-ion batteries(SIBs) because of the tunable structure design and simple functional ***,we prepare the ultrasmall Ni_(3)S_(2) nanocrystals embedded into N-doped porous carbon nanoparticles using the scalable Ni-MOF as precursor(denoted as Ni_(3)S_(2)@NPC).The ultrasmall size of Ni_(3)S_(2) can work for accelerated electro n/ion transfer to facilitate the electrochemical reaction ***,the robust conductivity network originated from N-doped porous carbon nanoparticles can not only improve the electron conductivity,but also enhance the electrode integrity and stability of the electrode/electrolyte *** addition,the N heteroatoms provide extra Na storage ***,the electrode delivers the obviously competitive capacities and high-power output with respect to the currently reported Ni_(3)S_(2)/C *** study provides a scalable and universal strategy to develop the advanced transition metal sulfides for practically feasible SIBs.

关键词： Sodium-ion batteries Metal organic framework Large-scale preparation Ni_(3)S_(2)nanocrystals N-doped porous carbon

Raman Scattering of Hydrogen-Ion-Exchanged LiNbO_(3) Crystal

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Chinese Physics Letters 1995年第2期12卷 116-119页

作者： wu xinglong ZHANG Mingsheng FENG Duan LIU Zhengtao State Key Laboratory of Solid State Microstructures and Department of Physics Nanjing UniversityNanjing 210008

Raman spectra of LiNbO_(3) crystals with different hydrogen-ion-exchanged time were examined.E(TO)and A1(TO)modes appear gradually in the transverse A1-and E-symmetry spectra respectively with increasing the exchange time and the dependence of their intensities on the exchange time is also *** attribute these results to both the internal strains resulting from the ordering-disordering distribution of H ions in the sample and the enhanced photorefractive effect.

关键词： effect symmetry spectra

Unidirectionally aligned diphenylalanine nanotube/ microtube arrays with excellent supercapacitive performance

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Nano Research 2014年第6期7卷 929-937页

作者： Jinlei Zhang xinglong wu Zhixing Gan Xiaobin Zhu Yamin Jin National Laboratory of Solid State Microstructures and Department of Physics Nanjing University Nanjing 210093 China

High-temperature （150-220 ℃） growth leads to the formation of some peptide nanotube/microtube （NT/MT） arrays but the NTs/MTs exhibit closed ends, irreversible phase modification and eliminations of piezoelectric and hydrophilic properties. Here we demonstrate the fabrication of unidirectionally aligned and stable diphenylalanine NT/MT arrays with centimeter scale area at room temperature by utilizing an external electric field. The interactions between the applied electric field and dipolar electric field on the NTs and surface positive charges are responsible for the formation. The unidirectionally aligned MT array exhibits a supercapacitance of 1,000 μF·cm^-2 at a scanning rate of 50 mV·s^-1; this is much larger than the values reported previously in peptide NT/MT arrays.

关键词： FF nanotubes/microtubes aligned growth surface charge supercapacitance

The origins of the broadband photoluminescence from carbon nitrides and applications to white light emitting

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Nano Research 2016年第6期9卷 1801-1812页

作者： Zhixing Gan Yun Shan Jiarui Chen Qingfeng Gui Qizhen Zhang Shouping Nie xinglong wu Key Laboratory of Optoelectronic Technology of Jiangsu Province School of Physical Science and Technology Nanjing Normal University Nanjing 210023 China Key Laboratory of Modern Acoustics MOE Institute of Acoustics Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China School of Environmental Science Nanjing Xiaozhuang University Nanjing 211171 China

Carbon nitrides synthesized by thermal polycondensation of melamine at 700 ~C exhibit photoluminescence （PL） ranging from 400 to 650 nm. This broad PL is attributed to band to band transitions and bandtail transitions of lone pair （LP） states of intra-tri-s-triazine and inter-tri-s-triazine nitrogens. The proposed PL mechanism is further confirmed by diffusion reflectance spectroscopy, as well as time-resolved and temperature-dependent PL. This intense fluorescence is stable at different pH and resistant to UV exposure, suggesting that this inexpensive broadband luminescent material could be significant for white- light-emitting （WLE） applications. Thus, quasi-WLE films and membranes with designed patterns are fabricated by embedding the carbon nitrides into polymethyl methacrylate. Moreover, even broader PL （400 to 740 nm） is acquired in com- posite films composed of carbon nitrides, further suggesting that the carbon nitrides are robust candidates for WLE.

关键词： photoluminescence carbon nitrides thermal polycondensation white light emission

One-pot Synthesis of 1,5-Diaza-2,6-cyclooctadiene-3,7-dicarboxylates Through a Multiple-component Reaction

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Chemical Research in Chinese Universities 2014年第3期30卷 387-389页

作者： LI Yufeng WANG xinglong LI Wei wu Zhengguang SHI Jie MA Hongfei College of Science Nanjing Tech University Nanjing 211816 P. R. China

Methyl propiolate, formaldehyde, and various acyclic amines were assembled in one-pot into a series of 1,5-diaza-2,6-cyclooctadiene-3,7-dicarboxylates in moderate to good yields. This multiple-component reaction benef... 详细信息

关键词： Multiple-component reaction Methyl propiolate 1,5-Diaza-2,6-cyclooctadiene-3,7-dicarboxylate

Upcycling the spent graphite/LiCoO_(2) batteries for high-voltage graphite/LiCoPO_(4)-co-workable dual-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1745-1751页

作者： Miao Du Hongyan Lü Kaidi Du Shuohang Zheng Xiaotong Wang Xiaotong Deng Ronghua Zeng xinglong wu Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal UniversityChangchun 130024China Faculty of Chemistry Northeast Normal UniversityChangchun 130024China School of Chemistry South China Normal UniversityGuangzhou 510006China

The worldwide proliferation of portable electronics has resulted in a dramatic increase in the number of spent lithium-ion batteries(LIBs).However,traditional recycling methods still have limitations because of such huge amounts of spent ***,we proposed an ecofriendly and sustainable double recycling strategy to concurrently reuse the cathode(LiCoO_(2))and anode(graphite)materials of spent LIBs and recycled LiCoPO_(4)/graphite(RLCPG)in Li^(+)/PF^(-)_(6) co-de/intercalation dual-ion *** recycle-derived dualion batteries of Li/RLCPG show impressive electrochemical performance,with an appropriate discharge capacity of 86.2 mAh·g^(-1) at25 mA·g^(-1) and 69%capacity retention after 400 *** recycling of the cathode and anode from spent LIBs avoids wastage of resources and yields cathode materials with excellent performance,thereby offering an ecofriendly and sustainable way to design novel secondary batteries.

关键词： recycle lithium cobalt oxide lithium cobalt phosphate graphite dual-ion batteries spent lithium-ion batteries