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Enhanced visible-light photoelectrochemical activity of TiO_2 nanorod arrays decorated by Sb_2S_3 particles

机译:Sb_2S_3颗粒修饰的TiO_2纳米棒阵列的可见光电化学性能增强

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摘要

Abstract Single-crystal TiO~(2)nanorod arrays (NRAs) were synthesized successfully onto transparent conducting substrates through a facile hydrothermal route for photo-electrochemical (PEC) water-splitting. Further, the ordered TiO~(2)NRAs were treated by SbCl~(3)solution for preparing a layer of Sb~(2)S~(3)and enhancing their PEC activity. A series of methods were employed to compare and analyze the differences between the TiO~(2)NRA samples with/without Sb~(2)S~(3)decoration. It was demonstrated that the PEC performance were enhanced significantly after being treated with SbCl~(3)aqueous solution (precursor) under a hydrothermal environment. Compared to pure TiO~(2)NRAs, the sample that decorated with Sb~(2)S~(3)showed a more positive flat-band level as well as a higher donor density (i.e. electron density). Thus, it suggested that the enhanced PEC performance after Sb~(2)S~(3)modification might be attributed to the widening of spectral response as well as the improvement of charge transfer / transport occurring at the solid/liquid interfaces.
机译:摘要通过一种简便的水热路线,将光化学法(PEC)水分解,在透明导电基底上成功合成了单晶TiO〜(2)纳米晶阵列(NRAs)。进一步,用SbCl〜(3)溶液处理了有序的TiO〜(2)NRAs,制备了一层Sb〜(2)S〜(3)并增强了其PEC活性。采用一系列方法比较和分析了有无Sb〜(2)S〜(3)修饰的TiO〜(2)NRA样品之间的差异。结果表明,在水热环境下,用SbCl〜(3)水溶液(前驱体)处理后,PEC性能显着提高。与纯TiO〜(2)NRAs相比,用Sb〜(2)S〜(3)装饰的样品显示出更正的平带能级以及更高的施主密度(即电子密度)。因此,表明Sb〜(2)S〜(3)修饰后PEC性能的提高可能归因于光谱响应的扩大以及固/液界面电荷转移的改善。

著录项

  • 来源
    《Journal of materials science》 |2018年第7期|5293-5298|共6页
  • 作者单位

    School of Materials Science and Engineering, China University of Mining and Technology;

    School of Materials Science and Engineering, China University of Mining and Technology;

    School of Materials Science and Engineering, China University of Mining and Technology;

    School of Materials Science and Engineering, China University of Mining and Technology;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-17 13:43:30

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