化学
硫黄
空位缺陷
糠醛
羟甲基
生产(经济)
无机化学
物理化学
结晶学
催化作用
有机化学
宏观经济学
经济
作者
Shaofeng Xiong,Xiaona Liu,Zhigang Shen,Zhong-Ting Hu,Hong‐Yun Yang,Jian Hao,Jinjun Cai,Jie Yang
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-11-30
卷期号:62 (49): 20120-20128
被引量:13
标识
DOI:10.1021/acs.inorgchem.3c02977
摘要
The construction of heterojunctions and surface defects is a promising strategy for enhancing photocatalytic activity. A surface sulfur vacancy (VS)-rich Zn3In2S6/Bi2MoO6 heterojunction photocatalyst (ZIS-VS/BMO) was herein developed for the selective oxidation of biomass-derived 5-hydroxymethyl furfural (HMF) to value-added 2,5-diformylfuran (DFF) coupled with H2 production. The ZIS-VS/BMO heterojunction consisted of Bi2MoO6 (BMO) with preferentially exposed high-index (131) facets and VS-rich two-dimensional (2D) Zn3In2S6 (ZIS-VS) nanosheets with preferentially exposed high-index (102) facets. The directional transfer of light-driven electrons from BMO to ZIS-VS occurs in the heterojunction interface, as confirmed by an in situ irradiated XPS (ISI-XPS) measurement, which facilitates the electron-hole separation. The benefits of VS in activating HMF, suppressing overoxidation of DFF, and accelerating electron transport were disclosed by molecular simulation. ZIS-VS/BMO displays outstanding performance with a DFF yield of 74.1% and a DFF selectivity of 90%, as well as a rapid rate of H2 evolution. This research would help design highly efficient photocatalysts and develop a new technology for biomass resource utilization.
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