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首页> 外文期刊>Catalysis science & technology >A biomimetic all-inorganic photocatalyst for the artificial photosynthesis of hydrogen peroxide
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A biomimetic all-inorganic photocatalyst for the artificial photosynthesis of hydrogen peroxide

机译：一种用于过氧化氢人工光合作用的仿生全无机光催化剂

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摘要

The artificial photosynthesis of H2O2 from water and O2 presents a sustainable route for its production. Remarkable progress in the rate of reaction has recently been achieved mainly by using semiconducting organic polymer photocatalysts. In view of the use under harsh oxidative conditions, the development of robust inorganic photocatalysts is highly desired. Here we present a photocatalyst with the unit consisting of a single Au particle and an interconnected cluster of SnO2 nanocrystals with the surface modified with SbCl3 (Au@SnO2–Sb(iii)). Under visible-light irradiation (λex = 420 nm), Au@SnO2–Sb(iii) stably produces H2O2 with a rate of 6.1 mM g−1 h−1 and an external quantum yield of 1.1%. This striking photocatalytic activity of Au@SnO2–Sb(iii) originates from the action of SnO2–Sb(iii) as a “light antenna” and “electron transporter”, the electrocatalytic activity of Au NPs for the two electron-oxygen reduction reaction, the visible-light induced activity of SnO2–Sb(iii) for the oxygen evolution reaction, the weak adsorptivity for H2O2, and the robustness.
机译：过氧化氢的人工光合作用的水和O2为其提出了一个可持续发展的途径生产。最近已经实现了主要由反应使用半导体有机聚合物论文的。氧化条件下,稳健的发展无机催化剂是非常理想的。提出了一种光催化剂单元组成的一个非盟粒子和一个相互关联的集群的SnO2纳米晶体与SbCl3表面改性(Au@SnO2-Sb (iii))。辐照(λ的前女友= 420海里),Au@SnO2-Sb (3)稳定生产过氧化氢与6.1毫米的速度g−1h−1和外部量子收益率为1.1%。惊人的光催化活性Au@SnO2-Sb (iii)来源于的作用SnO2-Sb (iii)作为“光天线”和“电子转运体”,非盟的electrocatalytic活动两个electron-oxygen NPs减少反应,可见光诱导活性SnO2-Sb (iii)氧发生反应,过氧化氢的吸附能力薄弱,鲁棒性。

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