界面促进 Bi3O4Br/Bi2O3 异质结中的高效选择性光氧化,eScience

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界面促进 Bi3O4Br/Bi2O3 异质结中的高效选择性光氧化
eScience ( IF 42.9 ) Pub Date : 2023-01-18 , DOI: 10.1016/j.esci.2023.100095
Xianshun Sun , Lei Li , Sen Jin , Wei Shao , Hui Wang , Xiaodong Zhang , Yi Xie

将胺选择性光氧化为生物学上重要的亚胺对工业应用有很大需求。该过程的转化效率和选择性在很大程度上取决于将光催化分子氧 (O ₂ ) 活化为活性氧物质。在这里，我们建议构建丰富的界面，以通过促进光载流子的转移来促进光催化 O _2活化。以Bi ₃ O ₄ Br/Bi ₂ O ₃异质结为例，丰富的界面有利于电子转移到吸附的O ₂对于超氧化物（ ${欧_{2个}}^{\cdot -}$ )生成，从而实现≥98%的转化效率和对苄胺及其衍生物的选择性。该研究为设计用于选择性氧化反应的先进光催化剂提供了一种有效的方法。

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Interface boosted highly efficient selective photooxidation in Bi3O4Br/Bi2O3 heterojunctions

Selective photooxidation of amines to biologically important imines is in great demand for industrial applications. The conversion efficiency and selectivity of the process are strongly dependent on the activation of photocatalytic molecular oxygen (O₂) into reactive oxygen species. Here, we propose the construction of rich interfaces to boost photocatalytic O₂ activation by facilitating the transfer of photocarriers. Taking Bi₃O₄Br/Bi₂O₃ heterojunctions as an example, rich interfaces facilitate electron transfer to adsorbed O₂ for superoxide ( ${O_{2}}^{\cdot -}$ ) generation, thus achieving ≥ 98% conversion efficiency and selectivity for benzylamine and benzylamine derivatives. This study offers a valid method to design advanced photocatalysts for selective oxidation reactions.

更新日期：2023-01-18

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