催化作用
钙钛矿(结构)
光催化
乙腈
化学
苯甲醛
溶剂
产量(工程)
光化学
分解
无机化学
选择性
化学工程
卤化物
材料科学
有机化学
工程类
冶金
作者
Mo Zhang,Zheng Li,Xing Xin,Junhao Zhang,Yeqin Feng,Hongjin Lv
出处
期刊:ACS Catalysis
日期:2020-12-02
卷期号:10 (24): 14793-14800
被引量:82
标识
DOI:10.1021/acscatal.0c04330
摘要
Selective production of value-added platform chemicals from renewable biomass feedstocks and their derivatives has attracted tremendous attention with high potential in addressing global problems of energy and sustainability. In this work, a lead-halide perovskite (MAPbBr3, MA = methylammonium) is utilized as a photocatalyst for selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) using atmospheric O2 upon visible-light irradiation. Under minimally optimized conditions, the photocatalytic conversion of HMF in acetonitrile solvent reaches 100% with a DFF selectivity of over 90%, achieving an overall furanic carbon yield of over 96%. A detailed catalytic mechanism was proposed based on various spectroscopic and experimental results, revealing that the atmospheric O2, photogenerated electrons (e–), holes (h+), •O2–, and 1O2 species together play crucial roles in the effective and selective photo-oxidation of HMF to DFF. In addition, our present photocatalytic system is also applicable for photo-oxidation of benzyl alcohol with approximately 100% conversion and benzaldehyde selectivity, providing insights for future exploration of the present catalytic system.
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