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Solid Base Bi 24 O 31 Br 10 (OH) δ with Active Lattice Oxygen for the Efficient Photo‐Oxidation of Primary Alcohols to Aldehydes
Author(s) -
Dai Yitao,
Ren Pengju,
Li Yaru,
Lv Dongdong,
Shen Yanbin,
Li Yongwang,
Niemantsverdriet Hans,
Besenbacher Flemming,
Xiang Hongwei,
Hao Weichang,
Lock Nina,
Wen Xiaodong,
Lewis James P.,
Su Ren
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201900773
Subject(s) - oxygen , chemistry , primary (astronomy) , alcohol oxidation , photochemistry , inorganic chemistry , alcohol , organic chemistry , physics , astronomy
The selective oxidation of primary alcohols to aldehydes by O 2 instead of stoichiometric oxidants (for example, Mn VII , Cr VI , and Os IV ) is an important but challenging process. Most heterogeneous catalytic systems (thermal and photocatalysis) require noble metals or harsh reaction conditions. Here we show that the Bi 24 O 31 Br 10 (OH) δ photocatalyst is very efficient in the selective oxidation of a series of aliphatic (carbon chain from C 1 to C 10 ) and aromatic alcohols to their corresponding aldehydes/ketones under visible‐light irradiation in air at room temperature, which would be challenging for conventional thermal and light‐driven processes. High quantum efficiencies (71 % and 55 % under 410 and 450 nm irradiation) are reached in a representative reaction, the oxidation of isopropanol. We propose that the outstanding performance of the Bi 24 O 31 Br 10 (OH) δ photocatalyst is associated with basic surface sites and active lattice oxygen that boost the dehydrogenation step in the photo‐oxidation of alcohols.