Gold nanoparticles supported on mesoporous silica: origin of high activity and role of Au NPs in selective oxidation of cyclohexane

Wu, Pingping, Bai, Peng, Yan, Zifeng and Zhao, George X. S. (2016) Gold nanoparticles supported on mesoporous silica: origin of high activity and role of Au NPs in selective oxidation of cyclohexane. Scientific Reports, 6 . doi:10.1038/srep18817


Author Wu, Pingping
Bai, Peng
Yan, Zifeng
Zhao, George X. S.
Title Gold nanoparticles supported on mesoporous silica: origin of high activity and role of Au NPs in selective oxidation of cyclohexane
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2016-01-05
Year available 2016
Sub-type Article (original research)
DOI 10.1038/srep18817
Open Access Status DOI
Volume 6
Total pages 11
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Formatted abstract
Homogeneous immobilization of gold nanoparticles (Au NPs) on mesoporous silica has been achieved by using a one-pot synthesis method in the presence of organosilane mercapto-propyl-trimethoxysilane (MPTMS). The resultant Au NPs exhibited an excellent catalytic activity in the solvent-free selective oxidation of cyclohexane using molecular oxygen. By establishing the structure-performance relationship, the origin of the high activity of mesoporous supported Au catalyst was identified to be due to the presence of low-coordinated Au (0) sites with high dispersion. Au NPs were confirmed to play a critical role in the catalytic oxidation of cyclohexane by promoting the activation of O2 molecules and accelerating the formation of surface-active oxygen species.
Keyword Heterogeneous catalysis
Porous materials
Nanoparticles
Cyclohexane oxidation
Catalytic activity
Surface-active oxygen species
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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