Investigating the Hybrid-Structure-Effect of CeO2 -Encapsulated Au Nanostructures on the Transfer Coupling of Nitrobenzene

Advanced Materials
Jian LiHongjie Zhang

Abstract

Due to the obvious distinctions in structure, core-shell nanostructures (CSNs) and yolk-shell nanostructures (YSNs) exhibit different catalytic behavior for specific organic reactions. In this work, two unique autoredox routes are developed to the fabrication of CeO2 -encapsulated Au nanocatalysts. Route A is the synthesis of well-defined CSNs by a one-step redox reaction. The process involves an interesting phenomenon in which Ce3+ can act as a weak acid to inhibit the hydrolysis of Ce4+ under the condition of OH- shortage. Route B is the fabrication of monodispersed YSNs by a two-step redox reaction with amorphous Co3 O4 as an in situ template. Furthermore, the transfer coupling of nitrobenzene is chosen as a probe reaction to investigate their catalytic difference. The CSNs can gradually achieve the conversion of nitrobenzene into azoxybenzene, while the YSNs can rapidly convert nitrobenzene into azobenzene. The different catalytic results are mainly attributed to their structural distinctions.

References

Jul 5, 2003·Science·Qi FuMaria Flytzani-Stephanopoulos
May 26, 2005·Angewandte Chemie·Alberto AbadHermenegildo García
Dec 22, 2005·Journal of the American Chemical Society·Connie M Y YeungShik Chi Tsang
Nov 17, 2006·Angewandte Chemie·Pablo M ArnalFerdi Schüth
Aug 14, 2008·Nano Letters·Qiao ZhangYadong Yin
Jan 27, 2009·Chemical Society Reviews·Robin J WhiteDuncan J Macquarrie
May 2, 2009·Journal of the American Chemical Society·Marco ConteVictor Chechik
Apr 8, 2011·Angewandte Chemie·Ilkeun LeeFrancisco Zaera
Aug 25, 2011·Chemical Communications : Chem Comm·Jian LiuGao Qing Lu
Mar 1, 2012·Chemical Communications : Chem Comm·Lei HuHongwei Gu
Jun 14, 2012·Chemical Reviews·Manolis Stratakis, Hermenegildo Garcia
Dec 28, 2012·Accounts of Chemical Research·Qiao ZhangYadong Yin
Mar 19, 2013·Chemistry : a European Journal·Takato MitsudomeKiyotomi Kaneda
May 25, 2013·Science·Myoung Hwan OhTaeghwan Hyeon
May 28, 2013·Journal of the American Chemical Society·Hang SunHongyu Chen
Dec 17, 2014·Chemistry : a European Journal·Magdalena Priebe, Katharina M Fromm
Oct 16, 2015·Journal of the American Chemical Society·Takato MitsudomeKiyotomi Kaneda
Dec 15, 2016·Journal of the American Chemical Society·Wangcheng ZhanSheng Dai

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Citations

Jan 11, 2020·Chemical Society Reviews·Xiao WangHongjie Zhang
Apr 1, 2020·Chemical Reviews·Meenakshisundaram SankarGraham J Hutchings
Jun 26, 2020·Chemical Reviews·Chuanbo GaoYadong Yin

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