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Synergistic effect of phosphorus doping and MoS_(2) co-catalysts on g-C_(3)N_(4) photocatalysts for enhanced solar water splitting

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Journal of Materials Science & Technology 2023年第27期158卷 171-179页

作者： Xunfu zhou Pai Wang Meng Li Minfu Wu Bei Jin Jin Luo Meifeng Chen Xiaoqin zhou Yanning Zhang xiaosong zhou School of Chemistry and Chemical Engineering Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education InstitutesLingnan Normal UniversityZhanjiangGuangdong 524048China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731China Electrochemical NanoEnergy Group School of Chemical Engineering and Light Industry at Guangdong University of TechnologyGuangzhou 510006China Department of Food Science Foshan Polytechnic Foshan 528137China

Carbon nitride(g-C_(3)N_(4))is a promising metal-free and visible-light-responsive ***,its photocatalytic efficiency still suffers from high recombination rates of photoinduced charge carriers,slow kinetics of surface redox reactions,and relatively poor light ***,a non-noble metal photocatalyst of MoS_(2) nanodots anchored on P-doped g-C_(3)N_(4) via in situ photodeposition was *** the synergetic effect of the P-doping and MoS_(2) co-catalyst,the as-prepared P-doped g-C_(3)N_(4)/MoS_(2) catalyst has achieved efficient photocatalytic overall water splitting with a hydrogen evolution rate of 121.7μmol h−1 g−*** results and Density functional theory(DFT)simulations indicate that the enhanced photo-absorption capacity originates from the reduced band gaps by P ***,the MoS_(2) reduces the overpotential of the water oxidation process and improves hydrogen adsorption capability in the hydrogen evolution *** work can pave a new avenue to design and develop noble-metal-free water-splitting photocatalysts for future large-scale applications.

关键词： Synergistic effect Noble-metal-free photocatalyst P-doping MoS_(2)co-catalyst Water splitting g-C_(3)N_(4)

Sustainable engineering of TiO_(2)-based advanced oxidation technologies:From photocatalyst to application devices

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Journal of Materials Science & Technology 2021年第19期78卷 202-222页

作者： Meng Zu xiaosong zhou Shengsen Zhang Shangshu Qian Dong-Sheng Li Xianhu Liu Shanqing Zhang College of Chemistry and Chemical Engineering Lingnan Normal UniversityZhanjiangGuangdong524048China Centre for Clean Environment and Energy and Griffith School of Environment Griffith UniversityGold CoastQLD4222Australia College of Materials and Energy South China Agricultural UniversityGuangzhou510643China College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges University.Yichang443002China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou450002China

In recent years,photocatalysis(PC)and photoelectrocatalysis(PEC)technologies have shown great promise as low-cost,environmentally friendly,and sustainable strategies in addressing the issues of energy shortages and environmental pollution,which has become a research *** dioxide(TiO_(2))-based PC and PEC are the most promising sustainable technologies for advanced oxidation *** to its inherent characteristics,including high oxidation ability,low price,and stability,TiO_(2)photocatalyst has been widely studied and used in different scales for numerous *** practical applications in these areas,the engineering of the photocatalysts and the design of the PC and PEC devices must be both environmentally and economically *** the one hand,for the engineering of the photocatalysts,the photocatalyst shall be able to deliver the following characteristics,including large specific surface area,high absorption of light,rapid and low-cost separation and regeneration,and high *** the other hand,the design of the PC and PEC devices shall facilitate high in energy utilization and catalytic efficiency,and low in building and operational *** work covers the reaction mechanism of TiO_(2)-based PC and PEC technologies,sustainable design,and preparation of TiO_(2)photocatalysts as well as sustainable design in PC and PEC devices for wastewater treatment,sensing,and water ***,we provide some critical perspectives on the future development of TiO_(2)-based PC and PEC technology.

关键词： Photocatalysis Photoelectrocatalysis TiO_(2) Bandgap Morphology engineering Sustainable design

Prediction on Phase Stabilities of the Zr-H System from the First-Principles

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Acta Metallurgica Sinica(English Letters) 2021年第4期34卷 514-522页

作者： Miao Chen Wu Qin Yixuan Hu Yiren Wang Yong Jiang xiaosong zhou Shuming Peng Yibei Fu Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang621999China State Key Laboratory for Powder Metallurgy School of Materials Science and EngineeringCentral South UniversityChangsha410083China

Basic fundamentals governing the hydrogenation of Zr and its alloys have both theoretical and practical *** this work,first-principles calculations have been performed to evaluate the relative stabilities of various possible phases in ZrH_(x)(x=1-2)under different temperatures and *** was predicted that fct-γandεphases with various different H-atom configurations can be energetically favorable for ZrH_(x)(x=1,1.25 and 1.5),while ZrH_(1.75) and ZrH_(2) prefer fct-ε phase ***-δ phase is less favored in energy at any H concentrations,but can be mechanically stable in some *** thermodynamically stable and metastable phase stability diagrams were then constructed for a wide temperature and H concentration range,to predict the environment-dependent formation of ZrH_(x) during hydrogenation.

关键词： Zr-H Hydrogenation Hydride Phase stability First-principles

Effect of microstructure on ~3He migration in TiT_(1.9) films

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Chinese Physics B 2018年第9期27卷 420-425页

作者： Haifeng Wang Shuming Peng Wei Ding Huahai Shen Weidu Wang xiaosong zhou and Xinggui Long Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China

Two kinds of films were prepared to study the effect of microstructure on helium migration in Ti tritides. Both films showed different release behaviors and helium bubble distributions. In the film consisting of columnar grains, a twolayered structure was observed. Inclusions with a strip feature were found at the grain boundary, and no helium bubbles were distributed in these inclusions. However, helium preferred to migrate to the boundaries of these inclusions. Bubble linkage as a ribbon-like feature developed parallel to the film surface in the film consisting of columnar grains. More cracks were developed at the grain boundaries of the film consisting of columnar grains, although the helium content in the film consisting of columnar grains was less than that in the film consisting of equiaxed grains. A surface region with a small number of bubbles, or ＂depleted zone＂, was observed near the surface. The cracks extending to the film surface were the pathways of the critical helium released from the film. The helium migration was strongly influenced by the grain microstructure.

关键词： helium bubble Ti tritide microstructure

Compositional dependence of hydrogenation performance of Ti-Zr-Hf-Mo-Nb high-entropy alloys for hydrogen/tritium storage

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Journal of Materials Science & Technology 2020年第20期52卷 116-125页

作者： Huahai Shen Jutao Hu Pengcheng Li Gang Huang Jianwei Zhang Jinchao Zhang Yiwu Mao Haiyan Xiao xiaosong zhou Xiaotao Zu Xinggui Long Shuming Peng Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China

A series of Ti-Zr-Hf-Mo-Nb high-entropy alloys with different Mo concentrations were developed as candidate materials for hydrogen/tritium storage in solid *** crystal structures and hydrogenation properties of the Ti-Zr-Hf-Mo-Nb alloys were investigated by X-ray diffraction and differential scanning calorimetry *** the alloys have a body-centred cubic single phase *** results demonstrate that the cell volume of the Ti-Zr-Hf-Mo-Nb hydride decreases with increasing Mo concentration,which reduces their thermal *** theoretical calculation proposes that the lower binding energy of the Ti-Zr-Hf-Mo-Nb hydride decreases the thermal stability of Ti-Zr-Hf-Mo-Nb alloys with higher Mo *** great hydrogenation performance for all the Ti-Zr-Hf-Mo-Nb alloys is owing to their reversible single-phase transformation during the hydrogen absorption-desorption cycle,which would be bene ficial to improving the hydrogen recycling rate and preventing the *** compositional dependence of the hydrogenation performance of the Ti-Zr-Hf-Mo-Nb alloys was established and will be useful in designing novel hydrogen/tritium storage materials to satisfy the requirements of diffe rent application fields in hydrogen,solar thermal and nuclear energy.

关键词： High-entropy alloy Hydrogen/tritium storage Crystal structure Phase transformation Binding energy

Methods to Study Serendipity

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Methods to Study Serendipity

纤维缠绕复合材料夹芯圆柱体高应变率压缩吸能机理

User Friendly 2014暨UXPA中国第十一届用户体验行业年会

作者： xiaosong zhou Xu Sun Sarah Sharples University of Nottingham

Despite the important role of serendipity in information research,its relevant studies within China are at a very early *** paper categorises current research methods of investigating serendipity in this *** use of social media has been highlighted and discussed as a research method in serendipity *** reviewing the research methods,we aim to help scholars and designers to conduct empirical studies to better understand this phenomenon.

关键词： serendipity research method social media

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国防科技大学学报 2020年第5期42卷 74-80页

作者：周晓松梅志远中国人民解放军军事科学院国防科技创新研究院北京100071 海军工程大学舰船与海洋学院湖北武汉430033

为研究纤维缠绕复合材料夹芯圆柱体吸能元件在高应变率冲击压缩载荷作用下的变形损伤模式和能量吸收机理,采用ABAQUS商用有限元软件和分离式Hopkinson压杆装置开展数值模拟分析和试验验证研究。对比分析宏观力学响应规律和微观损伤破坏... 详细信息

为研究纤维缠绕复合材料夹芯圆柱体吸能元件在高应变率冲击压缩载荷作用下的变形损伤模式和能量吸收机理,采用ABAQUS商用有限元软件和分离式Hopkinson压杆装置开展数值模拟分析和试验验证研究。对比分析宏观力学响应规律和微观损伤破坏机理,可知吸能结构元件在高应变率压缩载荷下的力学响应具有典型的弹塑性特征,内部芯材主要产生压缩塑性损伤,而表层复合材料沿环向产生拉伸断裂破坏。研究表明,该吸能元件冲击压缩吸能特性优异,可满足水下结构平台的冲击防护和浮力储备要求。

关键词：复合材料夹芯结构高应变率吸能机理

One-Step Microemulsion-Mediated Hydrothermal Synthesis of Nanocrystalline TiO<sub>2</sub>

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World Journal of Nano Science and Engineering 2014年第1期4卷 29-34页

作者： Xuyao Xu xiaosong zhou Lin Ma Miaoyan Mo Cuifen Ren Rongkai Pan School of Chemistry Science & Technology Institute of Physical Chemistry and Development Center for New Materials Engineering & Technology in Universities of Guangdong Zhanjiang Normal University Zhanjiang China School of Chemistry Science & Technology Institute of Physical Chemistry and Development Center for New Materials Engineering & Technology in Universities of Guangdong Zhanjiang Normal University ZhanjiangChina

Nanocrystalline TiO2 powders with high photocatalytic activity were prepared by one-step microemulsion-mediated hydrothermal method using tetrabutylorthotitanate (TiO(C4H9)4, TBOT) as precursor. The as-prepared TiO2 powders were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and the Brunauer-Emmett-Teller (BET) specific surface area measurements. The effects of the oil/water ratio and hydrothermal temperature on the microstructures and photocatalytic activity of the TiO2 powders were investigated. The results suggest that increasing the oil/water emulsion ratio significantly decreased the particle size of the as-prepared TiO2 powders and improved the photocatalytic activity. With hydrothermal temperature increasing, the average crystallite size increased and the photocatalytic activities of TiO2 powders decreased.

关键词： Titanium Dioxide Microemulsion Hydrothermal Method Photocatalytic Activity

C@Ag/TiO<sub>2</sub>: A Highly Efficient and Stable Photocatalyst Active under Visible Light

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World Journal of Nano Science and Engineering 2013年第1期3卷 1-5页

作者： Bei Jin xiaosong zhou Xuyao Xu Lin Ma Zhijun Wu Yingshan Huang School of Chemistry Science & Technology Development Center for New Materials Engineering & Technology in Universities of Guangdong Zhanjiang Normal University Zhanjiang China School of Chemistry Science & Technology Development Center for New Materials Engineering & Technology in Universities of Guangdong Zhanjiang Normal University Zhanjiang China

In this paper, preparation and characterization of C@Ag/TiO2 nanospheres compound photocatalysts was reported. C@Ag nanosphere was firstly synthesized via hydrothermal reaction, and followed by a sol-gel process to obtain the functionalized C@Ag/TiO2 nanosphere which has highly efficient visible light catalytic ability towards methyl orange (MO). The morphology of the obtained compound was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technologies. From which we can see that the as-prepared samples show a spherical structure with a diameter of approximately 200 nm, and the silver particle in core was about 10 nm. The catalytic ability of the synthesized photocatalysts under visible light irradiation shows that C@Ag/TiO2 possesses higher photocatalytic activity towards MO degradation than that of N-P25 (TiO2). Furthermore, the C@Ag/TiO2 photocatalysts exhibited excellent reusability with almost no change after five runs. Finally, the possible photocatalytic mechanism of catalyst under visible light was discussion and proposed.

关键词： Nanoparticles Sol-Gel Preparation Visible Light Photocatalyst Surface Plasma Resonance