Photosynthesis of Benzonitriles on BiOBr Nanosheets Promoted by Vacancy Associates

Tong Han, Xing Cao*, Hsiao Chien Chen, Junguo Ma, Yuan Yu, Yuhuan Li, Wei Xu, Kaian Sun, Aijian Huang, Zheng Chen, Chen Chen, Hongjun Zhang, Bangjiao Ye, Qing Peng*, Yadong Li*

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

36 引文 斯高帕斯(Scopus)

摘要

Photocatalytic organic functionalization reactions represent a green, cost-effective, and sustainable synthesis route for value-added chemicals. However, heterogeneous photocatalysis is inefficient in directly activating ammonia molecules for the production of high-value-added nitrogenous organic products when compared with oxygen activation in the formation of related oxygenated compounds. In this study, we report the heterogeneous photosynthesis of benzonitriles by the ammoxidation of benzyl alcohols (99 % conversion, 93 % selectivity) promoted using BiOBr nanosheets with surface vacancy associates. In contrast, the main reaction of catalysts with other types of vacancy sites is the oxidation of benzyl alcohol to benzaldehyde or benzoic acid. Experimental measurements and theoretical calculations have demonstrated a specificity of vacancy type with respect to product selectivity, which arises from the adsorption and activation of NH3 and O2 that is required to promote subsequent C−N coupling and oxidation to nitrile. This study provides a better understanding of the role of vacancies as catalytic sites in heterogeneous photocatalysis.

原文英語
頁(從 - 到)24 - 26
期刊Angewandte Chemie - International Edition
62
發行號49
出版狀態已出版 - 04 12 2023

文獻附註

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© 2023 Wiley-VCH GmbH.

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