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首页> 外文期刊>RSC Advances >A visible-light-induced photoelectrochemical water-splitting system featuring an organophotocathode along with a tungsten oxide photoanode
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A visible-light-induced photoelectrochemical water-splitting system featuring an organophotocathode along with a tungsten oxide photoanode

机译：一个可见光诱导的光电化学水分解系统，具有有机滴虫和氧化钨光电码

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摘要

A photoelectrochemical water-splitting system featuring an organo-photocathode of a p-n bilayer was studied, where WO3 was simultaneously utilized as a photoanode. Stoichiometric formation of H-2 and O-2 was found to occur due to the decomposition of water. In the reference system of a WO3 photoanode and Pt counter electrode, bias voltages more than 0.4 V were needed to be applied for water splitting; however, the present system successfully led to water decomposition by applying only a low voltage of 0.1 V to the system. In the present water-splitting system, oxidizing and reducing powers can be separately generated at the WO3 photoanode and organo-photocathode, respectively, which is distinct from the reference system. Furthermore, electron transfer from WO3 (conduction band) to the hole-retained p-type layer (valence band) in the organo-photocathode can efficiently occur for completing the photoelectrochemical process, thus, resulting in a high concentration of holes available for rate-limiting O-2 evolution at WO3 on the basis of efficient charge separation.
机译：研究了具有P-N双层有机光阴极的光电化学水分解系统，其中WO3同时用作光氧末。由于水的分解，发现了H-2和O-2的化学计量形成。在WO3光电码和PT对电极的参考系统中，需要施加大于0.4V的偏置电压以供水分裂;然而，本系统通过仅将0.1V的低电压施加到系统来成功地导致水分解。在本发明的水分裂系统中，可以分别在WO3光电和有机光阴极处分别在WO3光电和有机光阴极上分别产生氧化和降低功率，这与参考系统不同。此外，可以有机光电阴极中的来自WO3（导通带）的电子转移到有机光阴极中的空穴保留的p型层（价带），以便能够有效地发生用于完成光电化学过程，从而产生高浓度的孔可用于速率 - 在高效电荷分离的基础上限制WO3的O-2演变。

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  • 来源
    《RSC Advances》 |2017年第55期|共5页
  • 作者

    Kawai Yuto; Nagai Keiji; Abe Toshiyuki;

  • 作者单位

    Hirosaki Univ Grad Sch Sci &

    Technol Dept Frontier Mat Chem 3 Bunkyo Cho Hirosaki Aomori 0368561 Japan;

    Tokyo Inst Technol Inst Innovat Res Lab Chem &

    Life Sci Midori Ku Yokohama Kanagawa 2268503 Japan;

    Hirosaki Univ Grad Sch Sci &

    Technol Dept Frontier Mat Chem 3 Bunkyo Cho Hirosaki Aomori 0368561 Japan;

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  • 正文语种 eng
  • 中图分类 化学;
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