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首页> 外文期刊>Applied Surface Science >Enhanced visible-light activities for PEC water reduction of CuO nanoplates by coupling with anatase TiO2 and mechanism
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Enhanced visible-light activities for PEC water reduction of CuO nanoplates by coupling with anatase TiO2 and mechanism

机译：锐钛矿型TiO2偶联增强CuO纳米板PEC减水的可见光活性及机理

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摘要

CuO nanoplates were prepared by a feasible hydrothermal method, and then utilized as photocathodes for photoelectrochemical (PEC) water reduction in a neutral medium under visible-light irradiation. It is clearly demonstrated that the visible-light activities of the resulting nanoplates for PEC water reduction could be greatly improved after coupling with a proper amount of nanocrystalline anatase TiO2. This is attributed to the enhanced charge separation in the fabricated TiO2/CuO nanoplate composites mainly based on the atmosphere-controlled steady-state surface photovoltage spectra. Moreover, it is suggested that the enhanced charge separation resulted from the transfer of visible-light-excited high-energy electrons from CuO to TiO2 as confirmed from the single-wavelength PEC behavior. (C) 2015 Elsevier B.V. All rights reserved.
机译：通过可行的水热法制备CuO纳米板，然后将其用作光阴极，在可见光照射下在中性介质中进行光电化学（PEC）减水。清楚地表明，与适量的纳米晶锐钛矿型TiO2偶联后，可以大大提高所得纳米板用于PEC减水的可见光活性。这归因于主要基于大气控制的稳态表面光电压谱，在所制造的TiO2 / CuO纳米板复合材料中增强了电荷分离。此外，建议由单波长PEC行为证实，增强的电荷分离是由于可见光激发的高能电子从CuO转移到TiO2所致。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2015年第1期|681-685|共5页
  • 作者

    Li Zhijun; Qu Yang; He Guangwen; Humayun Muhammad; Chen Shuangying; Jing Liqiang;

  • 作者单位

    Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China;

    Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China;

    Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China;

    Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China;

    Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China;

    Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CuO nanoplate; Coupling TiO2; Photoelectrochemistry; Charge separation; Water reduction;

    机译：CuO纳米板TiO2偶联光电化学电荷分离减水率;

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