Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/srep18817
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Funding
- Natural Science Foundation of China [21206195]
- Joint Funds of the National Natural Science Foundation of China and China National Petroleum Corporation [U1362202]
- Fundamental Research Funds for the Central Universities [14CX02050A, 14CX02123A]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, Shandong Provincial Natural Science Foundation, China [ZR2012BM014]
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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 O-2 molecules and accelerating the formation of surface-active oxygen species.
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