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Mn-doped CsPb(Br/Cl)(3) mixed-halide perovskites for CO2 photoreduction

机译:Mn掺杂的CSPB(BR / C1)(3)混合卤化物钙酸盐用于CO2光电

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摘要

Halide perovskites have been employed as photocatalysts for CO2 photoreduction due to their excellent optical properties and unique electronic structure. However, their photocatalytic performance is relatively poor. Herein, we demonstrate a new strategy with Mn-doped CsPb(Br/Cl)(3) mixed-halide perovskites as catalysts to enhance the efficiency of CO2 photoreduction. By tuning the content of Mn, a series of CsPb(Br/Cl)(3):Mn perovskites are obtained and show high efficiency in CO2 conversion to CO and CH4. For the optimum catalyst sample, especially, the yields of CO and CH4 reach 1917 mu mol g(-1) and 82 mu mol g(-1) which are 14.2 and 1.4 times higher than those of CsPbBr3. This work provides new insights into improving the reactivity of perovskites in CO2 photoreduction.
机译:由于其优异的光学性质和独特的电子结构,卤化物钙酯已被用作CO 2光电催化剂的光催化剂。 然而,它们的光催化性能相对较差。 在此,我们证明了一种具有Mn掺杂CSPB(Br / Cl)(3)混合卤化物钙酸盐作为催化剂的新策略,以增强CO 2光电效率。 通过调节Mn的含量,获得一系列CSPB(BR / C1)(3):Mn Perovskites在CO 2转化为CO和CH4中显示出高效率。 对于最佳催化剂样品,特别是,CO和CH4的产率达到1917μmmolg(-1)和82μmolg(-1),其比Cspbbr3高14.2和1.4倍。 这项工作提供了新的见解,从而提高了CO2拍摄中Perovskites的反应性。

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