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Issue 4, 2015
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Oriented immobilization of Au nanoparticles on C@P4VP core–shell microspheres and their catalytic performance

Jie Li,a  Zeting Huang,a  Mu Yang,*a  Li Tan,a  Xiaowei Zhang,a  Hongyi Gao,a  Yinhai Tang,a  Qianqian Maa  and  Ge Wang*a 
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* Corresponding authors

a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
E-mail: gewang@mater.ustb.edu.cn
Fax: +86 10 62327878
Tel: +86 10 62333765

Abstract

Core–shell C@poly(4-vinylpyridine) (C@P4VP) microspheres immobilized with small and uniform Au nanoparticles were designed and fabricated. Firstly, the C@P4VP support was obtained by coating a poly(4-vinylpyridine) shell on the carbon spheres through the hydrogen-bond interaction between –COOH of carbon spheres and pyridine of 4-vinylpyridine. Then Au nanoparticles were synthesized by in situ adsorption and reduction of HAuCl4 in the P4VP chains of the C@P4VP microspheres. Carbon spheres can serve as hard templates and prevent the polymeric P4VP shell from excessive deformation. The coordination between cross-linked networks of P4VP chains and the embedded Au nanoparticles effectively inhibit the aggregation and leaching of noble metal nanoparticles from the support. The resulting C@P4VP–Au microspheres showed excellent catalytic performance and high cyclic stability in the aqueous reduction of 4-nitrophenol by NaBH4. Moreover, optimal activities were observed for the P4VP shell with a low cross-linked degree and a reaction system with a low pH value.

Graphical abstract: Oriented immobilization of Au nanoparticles on C@P4VP core–shell microspheres and their catalytic performance

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Publication details

The article was received on 24 Nov 2014, accepted on 04 Feb 2015 and first published on 05 Feb 2015


Article type: Paper
DOI: 10.1039/C4NJ02112F
Citation: New J. Chem., 2015,39, 2949-2955
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    Oriented immobilization of Au nanoparticles on C@P4VP core–shell microspheres and their catalytic performance

    J. Li, Z. Huang, M. Yang, L. Tan, X. Zhang, H. Gao, Y. Tang, Q. Ma and G. Wang, New J. Chem., 2015, 39, 2949
    DOI: 10.1039/C4NJ02112F

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