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Interface-engineered MoS_(2)/CoS/NF bifunctional catalysts for highly-efficient water electrolysis

Journal of Energy Chemistry 2022年第12期75卷 16-25,I0002页

作者： Wenxia Chen Xingwang Zhu Rui Wang Wei Wei Meng liu Shuai Dong Kostya ken Ostrikov Shuang-Quan Zang School of Chemistry and Chemical Engineering Henan Key Laboratory of Biomolecular Recognition and SensingHenan D&A Engineering Center of Advanced Battery MaterialsShangqiu Normal UniversityShangqiu 476000HenanChina Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001HenanChina College of Environmental Science and Engineering Yangzhou UniversityYangzhou 225009JiangsuChina School of Chemistry and Physics and Centre for Materials Science Queensland University of Technology(QUT)BrisbaneQLD 4000Australia

The utilization of non-noble metal catalysts with robust and highly efficient electrocatalytic activity for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)are extremely important for the large-scale implementation of renewable energy *** of bifunctional electrocatalysts on both anode and cathode electrodes remains a significant ***,we report on a novel and facile strategy to construct the ordered and aligned MoS_(2)nanosheet-encapsulated metal–organic frameworks(MOFs)derived hollow CoS polyhedron,in-situ grown on a nickel foam(NF).The starfish-like MoS_(2)/CoS/NF heterojunctions were formed due to the ordered growth of the material caused by NF *** optimized 2-MoS_(2)/CoS/NF heterojunction exhibits robust bifunctional electrocatalytic activity with a low overpotential of 67 and 207 m V toward the HER and OER at 10 mA cm^(-2),and the long-term stability,which exceeds most of the reported bifunctional *** high electrocatalytic performance arises due to the synergistic effect between the MoS_(2)and CoS phases across the interface,the abundant active sites,as well as the hierarchical pore framework,which collectively enhance the mass and electron transfer during the *** work provides a promising approach to fabricating bifunctional catalysts with custom-designed heterojunctions and remarkable performance for applications in electrochemical energy devices and related areas.

关键词： Heterojunction Bifunctional catalysts HER OER

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Effect of Cooling Method on Microstructure and Mechanical Properties of Hot-Rolled C-Si-Mn TRIP Steel

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Journal of Iron and Steel Research International 2012年第1期19卷 41-46页

作者： liu Ji-yuan ZHANG Zi-cheng ZHU Fu-xian LI Yan-mei Manabe ken-ichi State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110004LiaoningChina Department of Mechanical Engineering Tokyo Metropolitan UniversityTokyo 192-0397Japan

The controlled cooling technology following hot rolling process is a vital factor that affects the final micro- structure and mechanical properties of the hot-rolled transformation induced plasticity （TRIP） steels. In the present study, low alloy C-Si-Mn TRIP steel was successfully fabricated by hot rolling process with a 4450 hot roiling mill. To maximize the volume fraction and stability of retained austenite of the steel, two different cooling methods （aircooling and ultra-fast cooling ＂AC-UFC＂ and ultrmfast cooling, air cooling and ultra-fast cooling ＂UFC-AC-UFC＂） were conducted. The effects of the cooling method on the microstructure of hot-rolled TRIP steel were investigated via optical microscope, transmission electron microscope and conversion electron Mossbauer spectroscope. The mechanical properties of the steel were also evaluated by conventional tensile test. The results indicated that ferrite and bainite in the microstructure were refined with the cooling method of UFC-AC-UFC. The morphology of retained austenite was also changed from small islands distributing in bainite district （obtained with AC-UFC） to granular shape locating at the triple junction of the ferrite grain boundaries （obtained with UFC-AC-UFC）. As a result, the TRIP steel with a content of retained austenite of 11. 52%, total elongation of 32% and product of tensile strength and total elongation of 27 552 MPa·% was obtained.

关键词： hot-rolled TRIP steel retained austenite TRIP effect Mossbauer spectra mechanical property

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Colorimetric quantification of aqueous hydrogen peroxide in the DC plasma-liquid system

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Plasma Science and Technology 2021年第5期23卷 111-116页

作者： Renze YU Zhaoyuan liu Jiao LIN Xinyi HE Linsheng liu Qing XIONG Qiang CHEN Kostya(ken)OSTRIKOV Shenzhen Research Institute of Xiamen University Institute of Electromagnetics and AcousticsFujian Provincial Key Laboratory of Plasma and Magnetic ResonanceKey Laboratory of Electromagnetic Wave Science and Detection TechnologyXiamen UniversityXiamen 361005People’s Republic of China State Key Laboratory of Electrical Insulation and Power Equipment Centre for Plasma BiomedicineXi’an Jiaotong UniversityXi’an 710049People’s Republic of China College of electronic engineering Guangxi Normal UniversityGuilin 541004People’s Republic of China State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqing 400044People’s Republic of China School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD 4000Australia

The quantification of hydrogen peroxide(H_(2)O_(2))generated in the plasma-liquid interactions is of great importance,since the H_(2)O_(2)species is vital for the applications of the plasma-liquid ***,we report on in situ quantification of the aqueous H_(2)O_(2)(H_(2)O_(2)aq)using a colorimetric method for the DC plasma-liquid systems with liquid as either a cathode or an *** results show that the H_(2)O_(2)aqyield is 8-12 times larger when the liquid acts as a cathode than when the liquid acts as an *** conversion rate of the gaseous OH radicals to H_(2)O_(2)aqis 4-6 times greater in the former ***,the concentrations of dissolved OH radicals for both liquid as cathode and anode are of the same order of tens of n M.

关键词： plasma-liquid interactions hydrogen peroxide OH radical atmospheric-pressure plasma

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气液两相分离集成装置研制及应用

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低渗透油气田 2018年第2期23卷 67-70页

作者：赵卫军柳肯李国聪贾永社常家豪李文鹏中国石油长庆油田分公司第三采气厂

在试气工艺中,放喷排液是一个至关重要的环节,直接影响试气效果及产气量。传统试气工艺存在环境安全风险,通过对传统和现有试气工艺存在问题进行分析,设计制造了气液两相分离集成装置。该装置主要由除砂器、气液分离器、防爆型储液罐3... 详细信息

在试气工艺中,放喷排液是一个至关重要的环节,直接影响试气效果及产气量。传统试气工艺存在环境安全风险,通过对传统和现有试气工艺存在问题进行分析,设计制造了气液两相分离集成装置。该装置主要由除砂器、气液分离器、防爆型储液罐3部分组成。实验表明,该装置节能效果良好,具有低能耗、低成本、环境友好、安全可靠等优点,推广应用价值较好。

关键词：试气放喷分离器节能环保

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ERP系统在苏里格气田低成本战略中的应用探析

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低渗透油气田 2018年第1期23卷 129-132页

作者：柳肯孟凡伟王建民于雷吕碧军翟小强王斌中国石油长庆油田分公司第三采气厂陕西燃气集团有限公司中国石油长庆油田分公司第三采油厂

为了实现苏里格气田经济有效开发，低成本战略是优选，ERP系统引入应用势在必行。苏里格气田在项目立项审查、投资计划下达、信息共享方面需要不断完善，通过ERP系统在苏里格气田项目投资管理决策、实施等方面的应用，不断完善ERP系统... 详细信息

为了实现苏里格气田经济有效开发，低成本战略是优选，ERP系统引入应用势在必行。苏里格气田在项目立项审查、投资计划下达、信息共享方面需要不断完善，通过ERP系统在苏里格气田项目投资管理决策、实施等方面的应用，不断完善ERP系统功能、建立配套的管理和考核制度、调整管理方式，积极应对ERP系统运行项目管理的新变化，进一步推进苏里格气田项目管理的科学规范运行，助力实现气田经济有效开发。

关键词： ERP系统苏里格气田低成本战略

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Customizing the microenvironment of CO_(2) electrocatalysis via three‐phase interface engineering

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SmartMat 2022年第1期3卷 111-129页

作者： Xianlong Zhou Hao liu Bao Yu Xia Kostya(ken)Ostrikov Yao Zheng Shi‐Zhang Qiao School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSouth AustraliaAustralia Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhanChina National Laboratory for Optoelectronics School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)China School of Chemistry and Physics and Centre for Materials Science Queensland University of Technology(QUT)BrisbaneAustralia

Converting CO_(2) into high‐value fuels and chemicals by renewable‐electricitypowered electrochemical CO_(2) reduction reaction(CRR)is a viable approach toward carbon‐emissions‐neutral *** the thermocatalytic hydrogenation of CO_(2) at the solid‐gas interface,the CRR takes place at the three‐phase gas/solid/liquid interface near the electrode surface in aqueous solution,which leads to major challenges including the limited mass diffusion of CO_(2) reactant,competitive hydrogen evolution reaction,and poor product *** we critically examine the various methods of surface and interface engineering of the electrocatalysts to optimize the microenvironment for CRR,which can address the above *** effective modification strategies for the gas transport,electrolyte composition,controlling intermediate states,and catalyst engineering are *** key emphasis is made on the diverse atomic‐precision modifications to increase the local CO_(2) concentration,lower the energy barriers for CO_(2) activation,decrease the H2O coverage,and stabilize intermediates to effectively control the catalytic activity and *** perspectives on the challenges and outlook for the future applications of three‐phase interface engineering for CRR and other gasinvolving electrocatalytic reactions conclude the article.

关键词： catalytic selectivity electrochemical CO_(2)reduction intermediates microenvironment three‐phase interface

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Nanosize-effect on the distribution of heavy metals in copper smelting dust:Based on sophisticated dust sorting approach

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Nano Research 2024年第1期17卷 312-320页

作者： ken Li Zuwu Liao Hengdi Ye Qingzhu Li Fenghua Shen Qian Li Hui liu Qingwei Wang Xu Yan Zhang Lin Liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China National Engineering Research Center of Sintering and Pelletizing Equipment System Zhongye Changtian International Engineering Co.LtdChangsha 410205China

Dust particles emitted from smelters can be hazardous to ecosystems and humans,as they are often enriched in metallic ***,we combined multi-method mineralogical analysis with a sophisticated size sorting approach for copper smelting dust to study the nanosize-effect on heavy metal distribution,which has hitherto been *** types of dust were collected from a copper flash smelter and then size-sorted using a Dekati low-pressure *** showed that all three samples could easily sort out nanoscale dust particles(<1μm,grades 10–2)and even those smaller than 100 nm(grades 5–2).Especially for electrostatic precipitators dust,the mass fraction of nanoscale dust(<1μm)could reach 10.71%.The presence of heavy metals(Pb,Zn,Cu,and As)and their mineral species in dust was examined at various particle *** was discovered that different heavy metals are enriched on nanoparticles in specific *** micron-sized particles,heavy metals are generally found in discrete phases(e.g.,CuSO_(4),PbSO_(4),and As_(2)O_(3)).In nanoscale particles,the dominant phase is Fe_(3)O_(4),while heavy metals are mostly found in lattice substitution(e.g.,CuFe_(2)O_(4)and ZnFe_(2)O_(4)).Two distinct nano-dust morphologies were found:One with irregular mesh or chain structures consisting of particles of a few nanometers,and the other with polygonal crystals in larger sizes of hundreds of *** enrichment of heavy metals in the latter morphology is more pronounced,possibly because lattice substitution of heavy metals is more likely to occur when polycrystalline particles are formed.

关键词： copper flue dust size-sorted heavy metal distribution morphology nano-sized effects

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Motion Track Modeling and Analysis of Belt Spindle under Combined Effects of Bending Moment-Torque-Thermal Deformation

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Transactions of Tianjin University 2015年第3期21卷 209-215页

作者：齐向阳高卫国刘腾张大卫 Mao ken Tianjin Key Laboratory of Equipment Design and Manufacturing Technology Tianjin University School of Mechanical Engineering Tianjin Polytechnic University School of Engineering University of Warwick

The motion track of belt spindle is important for the radial error of belt spindle. An analytical modeling method for the motion track of belt spindle under the combined effects of bending moment-torque-thermal deformation is proposed in this paper. Three running phases of belt spindle have been analyzed and modeled: the start-up phase with leaping change due to the change in force and bending moment, the accelerating phase with axis deflection, and the constant speed phase with axis regression because of the combined effects of bending moment-torque-thermal deformation. The simulation and test were completed on the belt spindle of SKVM850 machine tool, which illustrates the variation law of the radial error of belt spindle during the whole running phases.

关键词： belt spindle torque moment thermal deformation deflection regression

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Toxicity assessment and long-term three-photon fluorescence imaging of bright aggregation-induced emission nanodots in zebrafish

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Nano Research 2016年第7期9卷 1921-1933页

作者： Dongyu Li Xinyuan Zhao Wei Qin Hequn Zhang Yue Fei Liwei liu ken-Tye Yong Guangdi Chen Ben Zhong Tang Jun Qian State Key Laboratory of Modern Optical Instrumentation Centre for Optical and Electromagnetic Research Zhejiang Provincial Key Laboratory for Sensing Technologies Zhejiang University Hangzhou 310058 China Bioelectromagnetics Laboratory Institute of Environmental Health Zhejiang University School of Medicine Hangzhou 310058 China Department of Chemistry The Hang Kong University of Science & Technology Clear Water Bay Kowloon Hong Kong China Changchun University of Science and Technology (CUST) Changchun 130022 China School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639798 Singapore

Aggregation-induced emission （AIE） luminogen displays bright fluorescence and has photobleaching resistance in its aggregation state. It is an ideal fluorescent contrast agent for bioimaging. Multiphoton microscopy is an important tool for bioimaging since it possesses the ability to penetrate deep into biological tissues. Herein, we used AIE luminogen together with multiphoton microscopy for long-term imaging of zebrafish. A typical AIE luminogen, 2,3-bis（4-（phenyl（4- （1,Z2-triphenylvinyl） phenyl）amino）phenyl） fumaronitrile （TPE-TPA-FN or TTF）, was encapsulated with 1,2-distearoyl-sn-glycero-3-phosphoethanola-mine-N- [methoxy（polyethylene glycol）-2000] （DSPE-mPEG2000） to form nanodots that exhibited bright three-photon fluorescence under 1,560 nm-femtosecond （fs） laser excitation. The TTF-nanodots were chemically stable in a wide range of pH values and showed no in vivo toxicity in zebrafish according to a series of biological tests. The TTF-nanodots were microinjected into zebrafish embryos, and the different growth stages of the labeled embryos were monitored with a three-photon fluorescence microscope. TTF-nanodots could be traced inside the zebrafish body for as long as 120 hours. In addition, the TTF-nanodots were utilized to target the blood vessel of zebrafish, and three-photon fluorescence angiogram was performed. More importantly, these nanodots were highly resistant to photobleaching under 1,560 nm-fs excitation, allowing long-term imaging of zebrafish.

关键词： biocompatible organicnanodots aggregation-inducedemission three-photon fluorescence bioimaging zebrafish

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Sustainable wood-based nanotechnologies for photocatalytic degradation of organic contaminants in aquatic environment

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 19-40页

作者： Xinyi liu Caichao Wan Xianjun Li Song Wei Luyu Zhang Wenyan Tian ken-Tye Yong Yiqiang Wu Jian Li College of Materials Science and Engineering Central South University of Forestry and TechnologyChangsha410004China Material Science and Engineering College Northeast Forestry UniversityHarbin150040China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore639798Singapore Yihua Lifestyle Technology Co. LtdHuaidong Industrial ZoneLianxia TownChenghai DistrictShantou515834China Caichao Wan

Wood-based nanotechnologies have received much attention in the area of photocatalytic degradation of organic contaminants in aquatic environment in recent years,because of the high abundance and renewability of wood as well as the high reaction activity and unique structural features of these ***,we present a comprehensive review of the current research activities centering on the development of wood-based nanocatalysts for photodegradation of organic *** review begins with a brief introduction of the development of photocatalysts and hierarchical structure of *** review then focuses on strategies of designing novel photocatalysts based on wood or its recombinants(such as 1D fiber,2D films and 3D porous gels)using advanced nanotechnology including sol-gel method,hydrothermal method,magnetron sputtering method,dipping method and so ***,we highlight typical approaches that improve the photocatalytic property,including metal element doping,morphology control and semiconductor ***,the structure-activity relationship of photocatalysts is ***,a brief summary and prospect of wood-derived photocatalysts is provided.

关键词： Wood Nanocatalysts Photodegradation Organic contaminants Composites

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