Efficient photocatalytic epoxidation of styrene over a quantum-sized SnO(2 )on carbon nitride as a heterostructured catalyst
Kong, Xianggui 1Duan, Haohong 2Li, Min 2Ma, Lina 1Luo, Lan 1Liu, Yuguang 1Xu, Ming 1Zhou, Hua 2Wang, Ye 2Li, Zhenhua1
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作者信息
1. Beijing Univ Chem Technol
2. Tsinghua Univ
折叠
Abstract
Styrene oxide is a pivotal organic intermediate in pharmaceuticals and fine chemicals synthesis. However, the current synthesis process relies on the use of peroxy acid or chlorohydrin, which is incompatible with establishing a more sustainable chemical industry. Here, we reported the synthesis of a quantum-sized SnO2 on 2D graphitic carbon nitride (CN) as a heterostructured catalyst, which displays efficient photocatalytic styrene epoxidation at room temperature using O-2 as a mild oxidant, achieving styrene conversion of 98.1% and styrene oxide yield of 71.8%. Photoelectrochemical analysis demonstrates efficient electron transferring exists from CN to SnO2, which enhances charge carriers' separation and transfer processes. Furthermore, we couple the photocatalytic styrene epoxidation with epoxide ring-opening amination, achieving the synthesis of value-added beta-amino alcohol in a cascade reaction fashion. This work may shed light on the heterostructured catalyst design for photocatalytic selective synthesis of valuable chemicals in a sustainable manner.
NSTL
Elsevier