Monolayer HNb3O8 for Selective Photocatalytic Oxidation of Benzylic Alcohols with Visible Light Response

被引：219

作者：

Liang, Shijing ^{[1
]}

Wen, Linrui ^{[1
]}

Lin, Sen ^{[1
]}

Bi, Jinhong ^{[1
]}

Feng, Pingyun ^{[2
]}

Fu, Xianzhi ^{[1
]}

Wu, Ling ^{[1
,2
]}

机构：

[1] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

[2] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 11期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

charge transfer; chemisorption; monolayers; photocatalysis; visible light; AEROBIC OXIDATION; TIO2; PHOTOCATALYST; SINGLE-LAYERS; NANOSHEETS; EFFICIENT; SUBSTITUTION; EXFOLIATION; IRRADIATION; CHALLENGES; CHEMISTRY;

D O I：

10.1002/anie.201311280

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Monolayer HNb3O8 2D nanosheets have been used as highly chemoselective and active photocatalysts for the selective oxidation of alcohols. The nanosheets exhibit improved photocatalytic activity over their layered counterparts. Results of in situ FTIR, DRS, ESR, and DFT calculations show the formation of surface complexes between the Lewis acid sites on HNb3O8 2D nanosheets and alcohols. These complexes play a key role in the photocatalytic activity of the material. Furthermore, the unique structural features of the nanosheets contributed to their high photocatalytic activity. An electron transition from the coordinated alcohol species to surface Nb atoms takes place and initiates the aerobic oxidation of alcohols with high product selectivity under visible light irradiation. This reaction process is distinct from that of classic semiconductor photocatalysis.

引用

页码：2951 / 2955

页数：5

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