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Progress on nanostructured gel catalysts for oxygen electrocatalysis

Nano Research 2022年第12期15卷 10343-10356页

作者： Huan Yang Huilin Hu Chenfeng Xia Feng You Junlong Yao Xueliang Jiang Bao Yu Xia Wuhan Institute of Technology Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationWuhan430205China Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan430074China

Driven by the serious ecological problems,it is urgent to explore high-efficiency sustainable energy *** electrocatalysis acts as important half-reactions in the emerging electrochemical energy techniques including electrolysis and *** composites exhibit the merits of rich porous,superior hydrophilic,and large specific surface area,which can significantly improve the electrolyte penetration and boost the kinetics process of oxygen *** this invited contribution,the advances and challenges of a novel gel materials for oxygen electrocatalysis are *** from the structure-activity-performance relationship of gel materials,synthetic routes of nanostructured gel materials,namely,radical polymerization,sol-gel method,hydrothermal/solvothermal reactions,and ligand-substitution method,are ***,the gel composites are divided into polymer-based,metal-based,and carbon-based materials in turn,and their applications in oxygen electrocatalysis are discussed *** the end,the perspective and challenges for advanced gel oxygen electrocatalysts are proposed.

关键词： oxygen electrocatalysis gel materials polymer metal carbon

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Recycling and Upgrading Utilization of Polymer Plastics

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Chinese Journal of Chemistry 2023年第4期41卷 469-480页

作者： Huilin Hu Yana Chen Feng You Junlong Yao Huan Yang Xueliang Jiang Bao Yu Xia Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationWuhan Institute of TechnologyNo.206 Guanggu 1st RoadWuhanHubei430205 China Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)1037 Luoyu RdWuhanHubei430074 China

Due to the current situation of massive waste consumption and accumulation,the recycling and upgrading utilization of polymer materials is an effective technology to solve environmental *** this work,the recycling and upgrading methods of polymers are summarized,and the latest progress in polymer upcycling is discussed from the perspective of upgrading *** common polymer recovery methods,including mechanical recovery,chemical recovery,biocatalysis,and photocatalytic recovery,are discussed based on their mechanism and industrialized *** upgrading products of polymers are divided into monomers,fuels and fine *** challenges and prospects of polymer degradation technology are discussed.

关键词： Polymer plastics Recycling Polymer upgrading Hydrogenation Catalyst Fuel Polymer degradation

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A Pilot Trial Investigation of Using Hydrochar Derived from Biomass Residues for EAF process 1

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Advances in Pyrometallurgy Symposium, held at the TMS Annual Meeting and Exhibition, TMS 2023

作者： Wang, Chuan Lu, Yu- Chiao Brabie, Liviu Wang, Guangwei SWERIM AB Process Metallurgy Luleå971 25 Sweden KTH Royal Institute of Technology Material Science and Engineering Stockholm100 44 Sweden University of Science and Technology Beijing Beijing100083 China

ISBN: (数字)9783031226342

ISBN: (纸本)9783031226335

Biocarbon will play an important role to achieve a carbon neutral and sustainable steel industry. In this study, three hydrochars (one type of biocoal produced via the hydrothermal carbonization process) derived from orange peel, green waste, and rice husk were tested in a 10-ton test-bed EAF (electric arc furnace). These hydrochars were added to EAF via injection and top-charge as carburizer to substitute anthracite. The obtained liquid slag composition after scrap meltdown is favorable for the desulphrization process. Moreover, a higher carburization yield was achieved by top charging of hydrochar into EAF at the beginning of the heat. The final P and S of liquid steel with addition of hydrochars were controlled to acceptable levels. Some perspectives of using hydrochar for EAF steelmaking are also presented. © 2023, The Minerals, Metals & materials Society.

关键词： Carbonization

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Mechanism, modification and stability of tungsten oxide-based electrocatalysts for water splitting: A review

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Journal of Energy Chemistry 2024年第12期99卷 23-49页

作者： Shuang Yu Xiaomei Yu Huijing Yang Feng Li Songjie Li Young Soo Kang Jin You Zheng National Key Laboratory of Coking Coal Green Process Research Zhengzhou UniversityZhengzhou 450o01HenanChina Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education School of Chemical Engineering Zhengzhou UniversityZhengzhou 4000 HenanChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina Environmental and Climate Technology Korea Institute of Energy Technology(KENTECH)200 Hyeoksin-roNaju 58330Republic of Korea

Electrocatalysis plays a crucial role in the field of clean energy conversion and provides essential support for the development of eco-friendly technology. There is a pressing need for electrocatalysts in renewable energy systems that exhibit exceptional activity, selectivity, stability, and economic viability. The utilization of metal oxides as electrocatalysts for the process of water splitting has made substantial progress in both theoretical and practical aspects and has emerged as a widely explored field of research. Tungsten oxides(WO_(x)) have attracted much attention and are regarded as a highly promising electrocatalytic material due to their exceptional electrocatalytic activity, cost-effectiveness, and ability to withstand extreme conditions. This review introduces the fundamental mechanism of WOx-based electrocatalysts for the hydrogen evolution reaction and the oxygen evolution reaction, providing a comprehensive overview of recent research advancements in their modification. Factors contributing to the catalytic activity and stability of WOxare explored, highlighting their potential for industrial applications. The aim herein is to provide guidelines for the design and fabrication of WOx-based electrocatalysts, thereby facilitating further research on their mechanistic properties and stability improvements in water splitting.

关键词： Non-stoichiometric tungsten oxide Electrocatalytic water splitting Modification Stability Oxygen vacancies

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NH_(4)Cl-assisted preparation of single Ni sites anchored carbon nanosheet catalysts for highly efficient carbon dioxide electroreduction

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Journal of materials Science & technology 2023年第11期142卷 1-9页

作者： Dan Ping Feng Yi Guiwei Zhang Shide Wu Shaoming Fang Kailong Hu Ben Bin Xu Junna Ren Zhanhu Guo Henan Provincial Key Laboratory of Surface&Interface Science Henan Engineering Research Center of Chemical Engineering Separation Process IntensificationSchool of Material and Chemical EngineeringZhengzhou University of Light IndustryZhengzhou 450002China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Department of Chemical&Biomolecular Engineering Integrated Composites Lab(ICL)University of TennesseeKnoxvilleTN 37996USA

Single-atomic transition metal-nitrogen codoped carbon(M-N-C)are efficient substitute catalysts for noble metals to catalyze the electrochemical CO_(2) reduction reaction(CO_(2)RR).However,the uncontrolled aggregations of metal and serious loss of nitrogen species constituting the M-N_(x) active sites are frequently observed in the commonly used pyrolysis ***,single-atomic nickel(Ni)-based sheet-like electrocatalysts with abundant Ni-N_(4) active sites were created by using a novel ammonium chloride(NH_(4)Cl)-assited pyrolysis *** aberration correction electron microscopy and X-ray absorption fine structure analysis clearly revealed that Ni species are atomically dispersed and anchored by N in Ni-N_(4) *** addition of NH_(4)Cl optimized the mesopore size to 7-10 nm and increased the concentrations of pyridinic N(3.54 wt%)and Ni-N_(4)(3.33 wt%)*** synergistic catalytic effect derived from Ni-N_(4) active sites and pyridinic N species achieved an outstanding CO_(2) RR performance,presenting a high CO Faradaic efficiency(FE_(CO))up to 98% and a large CO partial current density of 8.5 mA cm^(-2) at a low potential of-0.62 V ***,the FE_(CO) maintains above 80% within a large potential range from -0.43 to -0.73 V *** work provides a practical and feasible approach to building highly active single-atomic catalysts for CO_(2) conversion systems.

关键词： CO_(2)reduction Electrocatalyst Single-atomic ni NH_(4)Cl Pyridinic N

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Improving the Precipitation Hardness of Ductile Magnesium Alloys by Twin Roll Casting 14th

Improving the Precipitation Hardness of Ductile Magnesium Al...

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14th International Conference on technology of Plasticity, ICTP 2023

作者： Kurz, Gerrit Atxega, Eneko Eizagirre Özkaya, Fahrettin Bohlen, Jan Hübner, Sven Behrens, Bernd-Arno Jo, Sumi Institute of Material and Process Design Helmholtz-Center Hereon Geesthacht Germany Institute of Forming Technology and Machines Leibniz University Hannover Hanover Germany Department of Materials Science and Metallurgical Engineering Kyungpook National University Daegu Korea Republic of

ISBN: (纸本)9783031413407

The challenge implementing magnesium sheets as a lightweight material is to manufacture sheets with an acceptable formability at room temperature and sheet components with a suitable strength. The aim of this work is qualifying suitable alloys and their manufacturing process in a way that precipitation hardening is enabled after the final forming process. The precipitation morphology and the rapid solidification obtained by twin roll casting process are used to find an optimum microstructure for deep drawing and to increase the strength of the formed component by heat treatment. The results show that magnesium sheets made from Mg-Zn-Al-Ca exhibit good forming properties even after rolling from the slab, as well as an increase in hardness after a suitable heat treatment. The production route of sheets via twin roll casting process exhibits higher increases in both ductility of the sheets and hardness after heat treatment compared to the production route via ingot-rolling. This paper presents results of rolling experiments with different feedstock of Mg-Zn-Al-Ca alloys, the microstructures and textures, as well as their mechanical properties and Erichsen values. In addition, various heat treatments were carried out to increase hardness. The second part of the paper deals with the development of a suitable heated deep-drawing tool and shows the heat distribution in the tool as well as first results of the deep-drawing tests. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Hardness

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Distribution behavior of valuable elements in oxygen-enriched top-blown smelting process of waste printed circuit boards

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Transactions of Nonferrous Metals Society of China 2024年第11期34卷 3721-3736页

作者： Kang YAN Wen-can QUAN Zhong-tang ZHANG Hua-ping NIE Rui-xiang WANG Zhi-feng XU School of Metallurgy Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Ionic Rare Earth Resources and Environment Ministry of Natural ResourcesGanzhou 341000China Ganzhou Engineering Technology Research Center of Green Metallurgy and Process Intensification Ganzhou 341000China School of Material Engineering Jiangxi College of Applied TechnologyGanzhou 341000China

Oxygen-enriched top-blown smelting is a promising technology for processing waste printed circuit boards(WPCBs).The distribution behavior of valuable elements in WPCBs during smelting was investigated by varying the oxygen-enriched concentration,oxygen volume,CaO/SiO_(2)(mass ratio),and Fe/SiO_(2)(mass ratio).The optimal operating conditions were obtained by implementing a one-factor-at-a-time method.X-ray diffractometer,scanning electron microscopy−energy dispersive spectrometer,and inductive coupled plasma-atomic emission spectroscopy methods were utilized to detect the chemical composition,occurrence state as well as elemental contents of alloy and *** is found that the elements of Cu,Sn and Ni are mainly accumulated in the alloy while Fe is mainly oxidized into the *** direct yields of Cu,Sn and Ni are 90.18%,85.32%and 81.10%under the optimal conditions of temperature 1250℃,oxygen-enriched concentration 30%,oxygen volume 24 L,CaO/SiO_(2) mass ratio 0.55,and Fe/SiO_(2) mass ratio *** results show that the valuable metals are mainly lost in the slag through mechanical entrainment.

关键词： waste printed circuit boards top-blown smelting element distribution thermomechanical analysis slag type

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Trace doping realizing superior electrochemical performance in P2-type Na_(0.50)Li_(0.08)Mn_(0.60)Co_(0.16)Ni_(0.16)0_(2)cathode for sodium-ion batteries

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Chinese Chemical Letters 2023年第12期34卷 387-391页

作者： Hongying Hou Jinxu Qiu Bao Li Liang Wang Zhuangzhuang Zhang Mengmin Jia Xiaobing Lai Mingming Han Pengyao Yan Dai-Huo Liu Dongmei Dai Bao Wang Faculty of Material Science and Engineering Kunming University of Science and TechnologyKunming 650093 China Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

P2-type layered oxides are receiving significant interest due to their superior structure and intrinsic *** are strenuous attempts to balance the structure stability,phase transition as well as desirable electrochemical performances by inducing anion/cation ions,changing morphology,adjusting valence,*** this work,several same-period elements of Sc,Ti,V,Cr,Fe,Cu and Zn are doped into Na_(0.50)Li_(0.08)Mn_(0.60)Co_(0.16)Ni_(0.16)O_(2)cathodes,which are manipulated by ions radii and valence state,further studied by operando X-ray powder diffraction patterns(XRD).As a result,the Cu^(2+)doped cathode performed higher rate capacities(as high as 86 mAh/g even at 10 C)and more stable structures(capacity retention of~89.4%for 100 cycles),which owing to the synergistic effect among the tightened TMO_(2)layer,enlarged d-spacing,reduce O-O electrostatic repulsion,ameliorate lattice distortion as well as mitigate ordering of Na^(+)/vacancy.

关键词： P2-type layeredoxide Same-period elements doping Rietveld refinement Operando XRD Sodium-ion battery

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Brief review of hydrocarbon-reforming catalysts map for hydrogen production

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Energy Reviews 2023年第3期2卷 51-62页

作者： Qunwei Guo Jiaqi Geng Jiawen Pan Lu Zou Yunfeng Tian Bo Chi Jian Pu School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science&TechnologyWuhanHubei430074PR China Key Laboratory of Green Chemical Engineering Process of Ministry of Education School of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhanHubei430073PR China Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization School of Materials Science and PhysicsChina University of Mining and TechnologyXuzhou221116PR China

Hydrogen energy,the cleanest fuel,presents extensive applications in renewable energy technologies such as fuel ***,the transition process from carbon-based(fossil fuel)energy to desired hydrogen energy is usually hindered by inevitable scientific,technological,and economic obstacles,which mainly involves complex hydrocarbon reforming ***,this paper provides a systematic and comprehensive analysis focusing on the hydrocarbon reforming ***,recent related studies are summarized to clarify the intrinsic difference among the reforming *** to objectively assess the activated catalyst and deactivation mechanism,the rate-determining steps of reforming process have been emphasized,summarized,and ***,the effect of metals and supports on individual reaction processes is discussed followed by the metalsupport *** tendency and research map could be established to promote the technology development and expansion of hydrocarbon reforming *** review could be considered as the guideline for academics and industry designing appropriate catalysts.

关键词： Hydrogen production Reforming mechanism Metal-support interaction Metal catalysts Supports properties

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Rational design of efficient visible-light photocatalysts(1D@2D/0D)ZnO@Ni-doped BiOBr/Bi heterojunction:Considerations on hierarchical structures,doping and SPR effect

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Journal of materials Science & technology 2022年第30期125卷 38-50页

作者： Zhouzheng Jin Jingru Li Yiming Zhang Dan Liu Hui Ding Bhekie B.Mamba Alex T.Kuvarega Jianzhou Gui State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process Engineeringand School of Material Science and EngineeringTiangong UniversityTianjin 300387China School of Chemical Engineering and Technology Tiangong UniversityTianjin 300387China School of Chemistry Tiangong UniversityTianjin 300387China School of Environmental Science and Engineering Tianjin UniversityTianjin300072China University of South Africa College of ScienceEngineering and TechnologyNanotechnology and Water Sustainability Research UnitFlorida Science Campus 1710South Africa

Simultaneously integrating heterogeneous interface,element doping,and metal decorating was a promising strategy to promote the visible-light-driven photocatalytic ***,we demonstrated a facile solvothermal route for Ni-doped BiOBr/Bi^(0) with ZnO 3D hierarchical heterojunction(denoted as Z@B/BiNi).The optimal photocatalysts of Z@B/Bi-Ni sample presented a remarkable catalytic performance of high concentrations of tetracycline solution(40 mg/L)than those of the Z@B/Bi,Z@B,BOB and ZnO photocatalysts toward the visible-light-driven *** enhanced photocatalytic mechanism can be proposed as follows:(ⅰ)3D hierarchical heterojunction provided more active sites and accelerated the separation of charge carriers for photocatalytic TC;(ⅱ)formation of oxygen vacancies on the surface over Z@B/Bi-Ni by in-situ reduction of Bi^(0) and Ni doping could serve as the active sites for oxygen activation to adsorb free O_(2) and generate more superoxide radicals;(ⅲ)SPR effect of Bi metal were beneficial to carrier separation and also act as the active site to trap O_(2) *** work clarified the role of unique morphologies,surface plasmonic resonance(SPR)effect of metal Bi,and Ni doping in Z@B/Bi-Ni,and its photocatalytic reaction mechanism was proposed by a series of experiments,characterization and DFT calculations,arousing a new perspective to design hierarchical heterojunction photocatalysts.

关键词： Hierarchical heterojunction Oxygen vacancies Doping Ni SPR effect Photocatalysis

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