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首页> 外文期刊>Small >Unique 1D Cd_(1?x)Zn_xS@O-MoS_2/NiO_x Nanohybrids: Highly Efficient Visible-Light-Driven Photocatalytic Hydrogen Evolution via Integrated Structural Regulation
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Unique 1D Cd_(1?x)Zn_xS@O-MoS_2/NiO_x Nanohybrids: Highly Efficient Visible-Light-Driven Photocatalytic Hydrogen Evolution via Integrated Structural Regulation

机译：独特的1D CD_（1？X）Zn_XS @ O-MOS_2 / NIO_X纳米胺：通过综合结构调节，高效的可见光光催化氢催化氢化

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摘要

Development of noble-metal-free photocatalysts for highly efficient sunlightdriven water splitting is of great interest. Nevertheless, for the photocatalytic H_2 evolution reaction (HER), the integrated regulation study on morphology, electronic band structures, and surface active sites of catalyst is still minimal up to now. Herein, well-defined 1D Cd_(1?x)Zn_xS@O-MoS_2/NiO_x hybrid nanostructures with enhanced activity and stability for photocatalytic HER are prepared. Interestingly, the band alignments, exposure of active sites, and interfacial charge separation of Cd_(1?x)Zn_xS@O-MoS_2/NiO_x are optimized by tuning the Zn-doping content as well as the growth of defect-rich O-MoS_2 layer and NiOx nanoparticles, which endow the hybrids with excellent HER performances. Specifically, the visible-light-driven (>420 nm) HER activity of Cd_(1?x)Zn_xS@O-MoS_2/NiO_x with 15% Zn-doping and 0.2 wt% O-MoS_2 (CZ_(0.15)S-0.2M-NiO_x) in lactic acid solution (66.08 mmol h?1 g~(?1)) is about 25 times that of Pt loaded CZ0.15S, which is further increased to 223.17 mmol h?1 g~(?1) when using Na_2S/Na_2SO_3 as the sacrificial agent. Meanwhile, in Na_2S/Na_2SO_3 solution, the CZ_(0.15)S-0.2M-NiO_x sample demonstrates an apparent quantum yield of 64.1% at 420 nm and a good stability for HER under long-time illumination. The results presented in this work can be valuable inspirations for the exploitation of advanced materials for energy-related applications.
机译：为高效阳光驱动的水分裂的无贵金属光催化剂的开发具有很大的兴趣。然而，对于光催化H_2进化反应（她），催化剂的形态学，电子带结构和表面活性位点的综合调节研究仍然最小。在此，制备具有增强的活性和稳定性的具有增强的活性和稳定性的明确定义的1D CD_（1？X）Zn_XS @ O-MOS_2 / NiO_x杂化纳米结构。有趣的是，通过调整Zn掺杂含量以及富含缺陷的O-MOS_2的生长来优化CD_（1？x）Zn_xS @ O-MOS_2 / NIO_X的带对准，活动场所的曝光和界面电荷分离。层和NiOx纳米粒子，其性能优异地赋予杂种。具体地，具有15％Zn掺杂和0.2wt％O-MOS_2（CZ_（0.15）S-0.2的可见光驱动（> 420nm）的CD_（1×x）Zn_xs @ O-MOS_2 / NiO_x的活性。（CZ_（0.15）S-0.2 M-NiO_x）在乳酸溶液中（66.08mmol H 1 G〜（β1））约为Pt的CZ0.15s的约25倍，进一步增加到223.17mmolH = 1g〜（？1）使用NA_2S / NA_2SO_3作为牺牲剂。同时，在Na_2S / Na_2SO_3溶液中，CZ_（0.15）S-0.2M-NiO_X样品在长时间照明下，在420nm处表现出64.1％的表观量子产率为64.1％。在这项工作中提出的结果对于利用能源相关应用的先进材料可能是有价值的鼓舞。

著录项

  • 来源
    《Small》 |2019年第29期|共12页
  • 作者

    Haifeng Lin; Bowen Sun; Hui Wang; Qinqin Ruan; Yanling Geng; Yanyan Li; Jiakun Wu; Wenjing Wang; Jie Liu; Xun Wang;

  • 作者单位

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Taishan Scholar Distinguishing Discipline Talent Team of Rubber-Plastics Science and Engineering School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R;

    Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology College of Chemical Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China;

    Key Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 P. R. China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    1D hybrid nanostructures; active sites; band alignments; charge separation; photocatalytic hydrogen evolution;

    机译：1D杂交纳米结构;有源网站;带对齐;电荷分离;光催化氢气进化;

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