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Chinese Chemical Letters 2021年第3期32卷 1210-1214页

作者： Pu Shi Xiaodi Cheng siliu lyu Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China

Developing highly efficient nickel or iron based hydroxide electrocatalysts is primary essential but challenging for oxygen evolution reaction(OER)at ultra-high current ***,we developed a facile method to prepare nitrogen and iron doped nickel(Ⅱ)hydroxide nanosheets on self-supported conductive nickel foam(denoted as Fe,N-Ni(OH)_(2)/NF)through ammonia hydrothermal and impregnation *** to the optimization of the electronic structure by nitrogen doping and the strong synergistic effect between Fe and Ni(OH)_(2),the three-dimensional(3 D)Fe,N-Ni(OH)_(2)/NF nanosheets delivered superior electrocatalytic OER performances in basic solution with low potentials of 1.57 V and1.59 V under 500 mA/cm^(2)and 1000 mA/cm^(2)respectively and robust operation for 10 h with ignored activity decay,comparing well with the potentials of previously reported NiFe based electrocatalysts as well as the benchmark commercial Ir/C/***-situ Raman spectroscopy revealed that the main active species were NiOOH during the OER *** present results are expected to provide new insights into the study of OER process towards ultra-high current densities.

关键词： Vapor phase hydrothermal Nitrogen doped NiOOH Oxygen evolution reactio Ultra-high current density

Electrochemically exfoliated Ni-doped MoS_(2) nanosheets for highly efficient hydrogen evolution and Zn-H_(2)O battery

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Chinese Chemical Letters 2023年第1期34卷 159-163页

作者： Hao Wei Jincheng Si Libin Zeng siliu lyu Zhiguo Zhang Yange Suo Yang Hou School of Mechanical and Energy Engineering Zhejiang University of Science and TechnologyHangzhou 310027China Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China School of Metallurgy and Chemical Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

Thanks to tunable physical and chemical properties,two-dimensional(2D)materials have received intensive interest,endowing their excellent electrocatalytic performances for applications in energy ***,their catalytic activities are largely determined by poor adsorption energy and limited active edge ***,a one-step electrochemical exfoliation strategy was developed to fabricate 2D Ni-doped MoS_(2)nanosheets(Ni-EX-MoS_(2))with a lateral size of500 nm and thickness of3.5 *** from high electrical conductivity and abundant exposing active sites,Ni-EX-MoS_(2)catalyst displayed an admirable performance for electrochemical hydrogen evolution reaction(HER)with a low overpotential of 145 m V at 10 m A/cm^(2)as well as a small Tafel slope of 89 m V/dec in alkaline media,which are superior to those of the most reported MoS_(2)-based *** formed Ni species with tuning electronic structure played a crucial role as primary active center of Ni-EX-MoS_(2),as well as the forming stable 1T/2H phase MoS_(2)interface demonstrated a synergistic effect on electrocatalytic HER ***,Ni-EX-MoS_(2)was employed as a cathode electrode for alkaline Zn-H_(2)O battery,which displayed a high power density of 3.3 m W/cm^(2)with excellent *** work will provide a simple and effective guideline for design of electrochemically exfoliated transition metal-doped MoS_(2)nanosheets to inspire their practical applications in energy catalytic and storage.

关键词： Electrochemical exfoliation Ni doping MoS_(2) Hydrogen evolution reaction Zn-H_(2)O battery

Rational design on photoelectrodes and devices to boost photoelectrochemical performance of solar-driven water splitting: a mini review

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Frontiers of Chemical Science and Engineering 2022年第6期16卷 777-798页

作者： siliu lyu Muhammad Adnan Younis Zhibin Liu Libin Zeng Xianyun Peng Bin Yang Zhongjian Li Lecheng Lei Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China

As an eco-friendly,efficient,and low-cost technique,photoelectrochemical water splitting has attracted growing interest in the production of clean and sustainable hydrogen by the conversion of abundant solar *** the photoelectrochemical system,the photoelectrode plays a vital role in absorbing the energy of sunlight to trigger the water splitting process and the overall efficiency depends largely on the integration and design of photoelectrochemical *** recent years,the optimization of photoelectrodes and photoelectrochemical devices to achieve highly efficient hydrogen production has been extensively *** this paper,a concise review of recent advances in the modification of nanostructured photoelectrodes and the design of photoelectrochemical devices is ***,the general principles of structural and morphological factors in altering the photoelectrochemical performance of photoelectrodes are ***,the performance indicators and first principles to describe the behaviors of charge carriers are analyzed,which will be of profound guiding significance to increasing the overall efficiency of the photoelectrochemical water splitting ***,current challenges and prospects for an in-depth understanding of reaction mechanisms using advanced characterization technologies and potential strategies for developing novel photoelectrodes and advanced photoelectrochemical water splitting devices are demonstrated.

关键词： photoelectrochemical water splitting photoelectrodes hydrogen production charge separation catalytic mechanism

Bi/Bi2O3 nanoparticles supported on N-doped reduced graphene oxide for highly efficient CO2 electroreduction to formate

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Chinese Chemical Letters 2020年第6期31卷 1415-1421,F0002页

作者： Junjie Sun Wanzhen Zheng siliu lyu Feng He Bin Yang Zhongjian Li Lecheng Lei Yang Hou College of Environment Zhejiang University of TechnologyHangzhou 310014China Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Ningbo Research Institute Zhejiang UniversityNingbo 315100China

Electrocatalytic CO2 reduction(CO2 ER)into formate is a desirable route to achieve efficient transformation of CO2 to value-added chemicals,however,it still suffers from limited catalytic activity and poor ***,we develop a hybrid electrocatalyst composed of bismuth and bismuth oxide nanoparticles(NPs)supported on nitrogen-doped reduced graphene oxide(Bi/Bi2 O3/NrGO)nanosheets prepared by a combined hydrothermal with calcination *** to the combination of undercoordinated sites and strong synergistic effect between Bi and Bi2 O3,Bi/Bi2 O3/NrGO-700 hybrid displays a promoted CO2 ER catalytic performance and selectivity for formate production,as featured by a small onset potential of-0.5 V,a high current density of-18 mA/cm2,the maximum Faradaic efficiency of85%at-0.9 V,and a low Tafel slope of 166 mV/*** results reveal that the higher CO2 ER performance of Bi/Bi2 O3/NrGO-700 than that of Bi NPs supported on NrGO(Bi/NrGO)can be due to the partial reduction of Bi2 O3 NPs into Bi,which significantly increases undercoordinated active sites on Bi NPs surface,thus boosting its CO2 ER ***,a two-electrode device with Ir/C anode and Bi/Bi2 O3/NrGO-700 cathode could be integrated with two alkaline batteries or a planar solar cell to achieve highly active water splitting and CO2 ER.

关键词： NrGO Bi/Bi2O3 CO2 electroreduction Formate Hybrid catalysts

Nanocarbon-Enhanced 2D Photoelectrodes:A New Paradigm in Photoelectrochemical Water Splitting

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Nano-Micro Letters 2021年第2期13卷 45-73页

作者： Jun Ke Fan He Hui Wu siliu lyu Jie Liu Bin Yang Zhongjian Li Qinghua Zhang Jian Chen Lecheng Lei Yang Hou Kostya Ostrikov Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310012People’s Republic of China School of Chemistry and Environmental Engineering Wuhan Institute of Technology206 Guanggu 1st RoadWuhan 430205People’s Republic of China Department of Environmental Science and Engineering North China Electric Power University619 Yonghua N StBaoding 071003People’s Republic of China Institute of Zhejiang University-Quzhou Quzhou 324000People’s Republic of China Ningbo Research Institute Zhejiang UniversityHangzhou 315100People’s Republic of China State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang UniversityHangzhou 310012People’s Republic of China School of Chemistry and Physics and Centre for Materials Science Queensland University of TechnologyBrisbaneQLD 4000Australia

Solar-driven photoelectrochemical(PEC)water splitting systems are highly promising for converting solar energy into clean and sustainable chemical *** such PEC systems,an integrated photoelectrode incorporates a light harvester for absorbing solar energy,an interlayer for transporting photogenerated charge carriers,and a co-catalyst for triggering redox ***,understanding the correlations between the intrinsic structural properties and functions of the photoelectrodes is *** we critically examine various 2D layered photoanodes/photocathodes,including graphitic carbon nitrides,transition metal dichalcogenides,layered double hydroxides,layered bismuth oxyhalide nanosheets,and MXenes,combined with advanced nanocarbons(carbon dots,carbon nanotubes,graphene,and graphdiyne)as co-catalysts to assemble integrated photoelectrodes for oxygen evolution/hydrogen evolution *** fundamental principles of PEC water splitting and physicochemical properties of photoelectrodes and the associated catalytic reactions are *** strategies for the assembly of 2D photoelectrodes with nanocarbons to enhance the PEC performances are *** mechanisms of interplay of 2D photoelectrodes and nanocarbon co-catalysts are further *** challenges and opportunities in the field are identified to guide future research for maximizing the conversion efficiency of PEC water splitting.

关键词： Advanced nanocarbons Co-catalysts 2D layered structure Integrated photoelectrodes Photoelectrochemical water splitting

Rydberg-Induced Topological Solitons in Three-Dimensional Rotation Spin–Orbit-Coupled Bose–Einstein Condensates

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Chinese Physics Letters 2024年第9期41卷 9-14页

作者： Yang Wang Jinlong Cui Hongkai Zhang Yuan Zhao siliu Xu Qin Zhou Key Laboratory of Optoelectronic Sensing and Intelligent Control Hubei University of Science and TechnologyXianning 437100China School of Electronic and Information Engineering Hubei University of Science and TechnologyXianning 437100China School of Biomedical Engineering and Imaging Xianning Medical CollegeHubei University of Science and TechnologyXianning 437100China Research Center of Nonlinear Science School of Mathematics and Physical SciencesWuhan Textile UniversityWuhan 430200China

We present a novel approach for generating stable three-dimensional(3D)spatiotemporal solitons(SSs)within a rotating Bose–Einstein condensate,incorporating spin–orbit coupling(SOC),a weakly anharmonic potential and cold Rydberg *** intricate system facilitates the emergence of quasi-stable 3D SSs with topological charges|m|≤3 in two spinor components,potentially exhibiting diverse spatial *** findings reveal that the Rydberg long-range interaction,spin–orbit coupling,and rotational angular frequency exert significant influence on the domains of existence and stability of these ***,the Rydberg interaction contributes to a reduction in the norm of topological solitons,while the SOC plays a key role in stabilizing the SSs with finite topological *** research of SSs exhibits potential applications in precision measurement,quantum information processing,and other advanced technologies.

关键词： Rydberg topological Einstein

Vortex clusters and their active control in a cold Rydberg atomic system with PT-symmetric Bessel potential

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Chinese Physics B 2024年第12期33卷 180-186页

作者： Zhuo Fan Yi Shi Hang Wang Yuan Zhao Wei Peng siliu Xu Key Laboratory of Optoelectronic Sensing and Intelligent Control Hubei University of Science and TechnologyXianning 437100China School of Biomedical Engineering and Imaging Xianning Medical CollegeHubei University of Science and TechnologyXianning 437100China School of Electronic and Information Engineering Hubei University of Science and TechnologyXianning 437100China

We propose an approach for generating robust two-dimensional(2D)vortex clusters(VCs)in a Rydberg atomic system by utilizing parity-time(PT)symmetric optical Bessel *** show that the system supports novel multicore VCs with four and eight cores,corresponding to topological charges 2 and 4,*** stability of these VCs can be dynamically adjusted through the manipulation of the gain-loss component,Kerr nonlinearities,and the degree of nonlocality inherent in the Rydberg *** VCs are confined within the first lattice well of the Bessel potential,and both the power and width of lights undergo a quasi-periodic breathing phenomenon,which is attributed to the power exchange between the light fields and Bessel *** self-attractive and self-repulsive Kerr interactions can sustain robust VCs within this *** insights presented here not only facilitate the creation and manipulation of 2D VCs through PT-symmetric potentials but also pave the way for potential applications in optical information processing and transmission.

关键词： vortex clusters PT symmetry Bessel potential Rydberg-Rydberg interaction

Chirped Bright and Kink Solitons in Nonlinear Optical Fibers with Weak Nonlocality and Cubic-Quantic-Septic Nonlinearity

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Chinese Physics Letters 2022年第4期39卷 12-16页

作者： Qin Zhou Yu Zhong Houria Triki Yunzhou Sun siliu Xu Wenjun Liu Anjan Biswas Research Center of Nonlinear Science School of Mathematical and Physical SciencesWuhan Textile UniversityWuhan 430200China Radiation Physics Laboratory Department of PhysicsFaculty of SciencesBadji Mokhtar UniversityP.O.Box 1223000 AnnabaAlgeria School of Electronic and Information Engineering Hubei University of Science and TechnologyXianning 437100China State Key Laboratory of Information Photonics and Optical Communications School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China Beijing University of Posts and Telecommunications Research Institute Shenzhen 518057China Department of Physics Chemistry and MathematicsAlabama A&M UniversityNormalAL 35762-4900USA Mathematical Modeling and Applied Computation(MMAC)Research Group Department of MathematicsKing Abdulaziz UniversityJeddah 21589Saudi Arabia

This work focuses on chirped solitons in a higher-order nonlinear Schrodinger equation,including cubic-quinticseptic nonlinearity,weak nonlocal nonlinearity,self-frequency shift,and self-steepening *** the first time,analytical bright and kink solitons,as well as their corresponding chirping,are *** influence of septic nonlinearity and weak nonlocality on the dynamical behaviors of those nonlinearly chirped solitons is thoroughly *** findings of the study give an experimental basis for nonlinear-managed solitons in optical fibers.

关键词： effect nonlinearity solitons

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二维PT对称晶格势中的多极光孤子

光学学报 2016年第2期36卷 155-162页

作者：章臣浩徐四六湖北科技学院电子与信息工程学院湖北咸宁437100

基于改进的平方算符方法和傅里叶配点法,研究了二维宇称-时间(PT)对称的三角-高斯晶格势中二极、三极和四极光孤子的传输特性。结果表明:三极孤子的光场分布随参数变化而变化,不存在稳定的三极孤子;二极、四极孤子的功率随传播常数的增... 详细信息

基于改进的平方算符方法和傅里叶配点法,研究了二维宇称-时间(PT)对称的三角-高斯晶格势中二极、三极和四极光孤子的传输特性。结果表明:三极孤子的光场分布随参数变化而变化,不存在稳定的三极孤子;二极、四极孤子的功率随传播常数的增大而增大,随调制深度的增大而减小;孤子稳定性决定于晶格的调制深度和传播系数,对于给定的调制深度,孤子存在一个稳定性范围;当调制深度增加时,二极孤子的稳定性范围先减小后增大,而四极孤子则先呈波浪式增大后减小。

关键词：非线性光学多极光孤子改进的平方算符法宇称-时间对称晶格势

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Photos of the week

Changjiang Weekly 2023年第4期 11-11,F0004页

作者： Li Yonggang(Photo) Li Ziyun(Photo) Jin siliu(Photo) 不详

Spring brings joy and happiness to everyone's heart,as it is a wonderful time for the awakening of nature and *** Wuhan,wehave seen many flowers,animals and insects that signal the arrival of *** celebrating the vibra... 详细信息

关键词： Spring spring Photo