脱氢
光催化
化学
催化作用
光化学
酒精氧化
氧化还原
化学计量学
辐照
氧气
无机化学
材料科学
物理化学
有机化学
物理
核物理学
作者
Yitao Dai,Pengju Ren,Yaru Li,Dongdong Lv,Yanbin Shen,Yongwang Li,J.W. Niemantsverdriet,Flemming Besenbacher,Huimin Xiang,Weichang Hao,Nina Lock,Xiaodong Wen,James P. Lewis,Ren Su
标识
DOI:10.1002/anie.201900773
摘要
Abstract 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.
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