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首页> 外文期刊>Applied Surface Science >Graphene oxide wrapped CH_3NH_3PbBr_3 perovskite quantum dots hybrid for photoelectrochemical CO_2 reduction in organic solvents
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Graphene oxide wrapped CH_3NH_3PbBr_3 perovskite quantum dots hybrid for photoelectrochemical CO_2 reduction in organic solvents

机译：氧化石墨烯包裹的CH_3NH_3PbBr_3钙钛矿量子点杂化剂用于在有机溶剂中光电化学还原CO_2

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摘要

Lead halide perovskite have primarily considered as photovoltaic materials for luminescent materials and optoelectronic devices. However, lead halide perovskite is assumed to be unsuitable for photoelectrochemical conversion due to the instability in humid environment or polar solvents. Here, we report graphene oxide (GO) wrapped organic-inorganic lead halide perovskite quantum dots (GO/CH3NH3PbBr3 hybrid) for photoelectrochemical conversion CO2 into solar fuels in nonaqueous media. Graphene oxide can protect CH3NH3PbBr3 QDs from erosion by organic solvent, and also serve as electron transport medium to separate photoinduced electrons and holes. Therefore, a photocurrent increase by ca. 200% can be obtained in the GO/CH3NH3PbBr3 hybrid due to improved electron extraction and transport. The GO/CH3NH3PbBr3 electrode exhibits an effective CO2 reduction capacity to CO, yielding 1.05 mu mol cm(-2) h(-1).
机译：钙钛矿卤化物主要被认为是用于发光材料和光电器件的光伏材料。然而，由于在潮湿环境或极性溶剂中的不稳定性，卤化钙钛矿被认为不适合光电化学转化。在这里，我们报告氧化石墨烯（GO）包裹有机-无机卤化铅钙钛矿量子点（GO / CH3NH3PbBr3杂化物），用于在非水介质中将光电化学转化为太阳能。氧化石墨烯可以保护CH3NH3PbBr3 QD免受有机溶剂的侵蚀，并且还可以用作电子传输介质以分离光致电子和空穴。因此，光电流增加约。由于改善了电子的提取和传输，在GO / CH3NH3PbBr3杂化物中可以获得200％的电荷。 GO / CH3NH3PbBr3电极对CO表现出有效的CO2还原能力，产生1.05μmol cm（-2）h（-1）。

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  • 来源
    《Applied Surface Science》 |2019年第28期|607-613|共7页
  • 作者

    Wang Qinglong; Tao Leiming; Jiang Xingxing; Wang Mingkui; Shen Yan;

  • 作者单位

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Graphene oxide; Perovskite quantum dot; Photoelectrochemical CO2 reduction;

    机译：氧化石墨烯;钙钛矿量子点;光电化学还原CO2;

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