Novel CeO2 yolk–shell structures loaded with tiny Au nanoparticles for superior catalytic reduction of p-nitrophenol

Cong-Min Fan; Lin-Fei Zhang; Sha-Sha Wang; Dong-Hong Wang; Li-Qiang Lu; An-Wu Xu

doi:10.1039/C2NR31713C

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Novel CeO₂ yolk–shell structures loaded with tiny Au nanoparticles for superior catalytic reduction of p-nitrophenol†

Cong-Min Fan,^a Lin-Fei Zhang,^a Sha-Sha Wang,^a Dong-Hong Wang,^a Li-Qiang Lu^a and An-Wu Xu*^a

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* Corresponding authors

^a Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
E-mail: anwuxu@ustc.edu.cn
Fax: +86 551-360 3040

Abstract

Direct fabrication of core–shell or yolk–shell functional nanomaterials via a facile template-free method remains a challenge. In this work, we present a novel approach that involves straightforward chemical transformation and thermal treatment of the infinite coordination polymer particles to obtain composition-tunable CeO₂ yolk–shell structures. Uniform CeO₂ yolk–shell hollow spheres with a high surface area are promising support materials for tiny gold nanoparticles (ca. 4 nm), forming Au–CeO₂ nanocomposites which exhibit a remarkable catalytic activity and high stability for the reduction of p-nitrophenol. A possible mechanism for the formation of CeO₂ yolk–shell microspheres is also proposed.

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Article information

DOI: https://doi.org/10.1039/C2NR31713C
Article type: Paper
Submitted: 03 Jul 2012
Accepted: 04 Sep 2012
First published: 10 Sep 2012

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Nanoscale, 2012,4, 6835-6840

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Novel CeO₂ yolk–shell structures loaded with tiny Au nanoparticles for superior catalytic reduction of p-nitrophenol

C. Fan, L. Zhang, S. Wang, D. Wang, L. Lu and A. Xu, Nanoscale, 2012, 4, 6835 DOI: 10.1039/C2NR31713C

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