典型文献
Urchin-like Nb2O5 hollow microspheres enabling efficient and selective photocatalytic C-C bond cleavage in lignin models under ambient conditions
文献摘要：
Selective cleavage of robust C-C bonds to harvest value-added aromatic oxygenates is an intriguing but challenging task in lignin depolymerization.Photocatalysis is a promising technology with the advan-tages of mild reaction conditions and strong sustainability.Herein,we show a novel urchin-like Nb2O5 hollow microsphere(U-Nb2O5 HM),prepared by one-pot hydrothermal method,are highly active and se-lective for Cα-Cβ bond cleavage of lignin β-O-4 model compounds under mild conditions,achieving 94％substrate conversion and 96％C-C bond cleavage selectivity.Systematic experimental studies and den-sity functional theory(DFT)calculations revealed that the superior performance of U-Nb2O5 HMs arises from more exposed active sites,more efficient free charge separation and the active(001)facet,which facilitates the activation of Cβ-H bond of lignin models and generate key Cβ radical intermediates by photogenerated holes,further inducing the Cα-Cβ bond cleavage to produce aromatic oxygenates.This work could provide some suggestions for the fabrication of hierarchical photocatalysts in the lignin de-polymerization system.
文献关键词：
中图分类号：
作者姓名：
Huan Chen;Donghui Hong;Kun Wan;Junjie Wang;Bo Niu;Yayun Zhang;Donghui Long
作者机构：
State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Key Laboratory of Multiphase Materials Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China
文献出处：
引用格式：
[1]Huan Chen;Donghui Hong;Kun Wan;Junjie Wang;Bo Niu;Yayun Zhang;Donghui Long-.Urchin-like Nb2O5 hollow microspheres enabling efficient and selective photocatalytic C-C bond cleavage in lignin models under ambient conditions)[J].中国化学快报（英文版）,2022(09):4357-4362
A类：
Urchin
B类：
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AB值：
0.634277
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