Issue 3, 2013

Densely populated mesopores in microcuboid CeO2 crystal leading to a significant enhancement of catalytic activity

Abstract

Unique mesoporous microcuboid CeO2 crystals were prepared by a facile method, involving the hydrothermal hydrolysis of a Ce(NO3)3 aqueous solution in the presence of urea at 180 °C followed by calcination at 400 °C, and characterized with XRD, SEM, TEM, BET, Raman, XPS, positron annihilation spectroscopy and TPR. It was found for the first time that the presence of densely populated mesopores in the microcuboid CeO2 crystals results in highly reactive surface lattice oxygen due to the exposure of the mesopore wall surface with high interfacial curvature, thus leading to a significant enhancement in catalytic activity as compared to single crystal CeO2 nanocubes without mesopores.

Graphical abstract: Densely populated mesopores in microcuboid CeO2 crystal leading to a significant enhancement of catalytic activity

Supplementary files

Article information

Article type
Paper
Submitted
01 Oct 2012
Accepted
15 Oct 2012
First published
18 Oct 2012

J. Mater. Chem. A, 2013,1, 728-734

Densely populated mesopores in microcuboid CeO2 crystal leading to a significant enhancement of catalytic activity

W. Shi, Y. Li, J. Hou, H. Lv, X. Zhao, P. Fang, F. Zheng and S. Wang, J. Mater. Chem. A, 2013, 1, 728 DOI: 10.1039/C2TA00504B

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