Issue 39, 2012

Entrapment of metal nanoparticles within nanocages of mesoporous silicas aided by co-surfactants

Abstract

We demonstrated an efficient approach for in situ encapsulation of metal nanoparticles (NPs) into nanocages of mesoporous silicas using a co-surfactant as the transportation medium. By using this approach, colloidal Pt and Au NPs were successfully encapsulated into the nanocages of cagelike mesoporous silicas (CMS) and FDU-12 using co-surfactants butanol and mesitylene (TMB) as the transportation medium, respectively. The prepared Pt/CMS catalysts are active and highly selective in the hydrogenation of chloronitrobenzene (CNB) to the corresponding chloroaniline (CAN). The catalyst prepared by the in situ method is superior to the catalyst prepared by the traditional solution impregnation method. This work provides a new approach for the synthesis of the mesoporous materials with encapsulated metal NPs.

Graphical abstract: Entrapment of metal nanoparticles within nanocages of mesoporous silicas aided by co-surfactants

Supplementary files

Article information

Article type
Paper
Submitted
19 Jun 2012
Accepted
03 Aug 2012
First published
06 Aug 2012

J. Mater. Chem., 2012,22, 21045-21050

Entrapment of metal nanoparticles within nanocages of mesoporous silicas aided by co-surfactants

X. Li, X. Liu, Y. Yang, J. Zhao, C. Li and Q. Yang, J. Mater. Chem., 2012, 22, 21045 DOI: 10.1039/C2JM33965J

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