A biomimetic all-inorganic photocatalyst for the artificial photosynthesis of hydrogen peroxide
A biomimetic all-inorganic photocatalyst for the artificial photosynthesis of hydrogen peroxide
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用于过氧化氢人工光合作用的仿生全无机光催化剂
DOI：
10.1039/d2cy01089e
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Tada Hiroaki
中科院分区：
文献类型：
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作者：
Teranishi Miwako;Naya Shin-ichi;Yan Yaozong;Soejima Tetsuro;Kobayashi Hisayoshi;Tada Hiroaki
从水和O2中人工光合作用H2 O2为其生产提供了一条可持续的途径。最近，主要通过使用半导体有机聚合物光催化剂，在反应速率方面取得了显着进展。鉴于在苛刻的氧化条件下的使用，非常需要开发鲁棒的无机光催化剂。在这里，我们提出了一种光催化剂的单元组成的一个单一的Au颗粒和一个相互连接的簇的SnO 2纳米晶体的表面改性与SbCl 3（Au@SnO2-Sb（III））。在可见光照射（λex = 420 nm）下，Au@SnO2-Sb（III）稳定地产生H2 O2，速率为6.1 mM g−1 h−1，外量子产率为1.1%。Au@SnO2-Sb（III）的这种显著的光催化活性源于SnO 2-Sb（III）作为“光天线”和“电子传输体”的作用、Au NPs对两个电子-氧还原反应的电催化活性、SnO 2-Sb（III）对析氧反应的可见光诱导活性、对H2 O2的弱吸附性以及鲁棒性。
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.