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Materials 2014, 7(5), 3547-3556; doi:10.3390/ma7053547

Nanosize Control on Porous β-MnO2 and Their Catalytic Activity in CO Oxidation and N2O Decomposition

1,2,* , 3,4,*  and 4
1 National Institute of Clean-and-low-carbon Energy, Beijing 102211, China 2 School of Chemistry and EaStChem, University of St Andrews, St Andrews, Fife KY 16 9ST, UK 3 Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China 4 Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
* Authors to whom correspondence should be addressed.
Received: 1 February 2014 / Revised: 27 March 2014 / Accepted: 29 April 2014 / Published: 6 May 2014
(This article belongs to the Special Issue Advances in Nanoporous Materials)
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A major challenge in the synthesis of porous metal oxides is the control of pore size and/or wall thickness that may affect the performance of these materials. Herein, nanoporous β-MnO2 samples were prepared using different hard templates, e.g., ordered mesoporous silica SBA-15 and KIT-6, disordered mesoporous silica, and colloidal silica. These samples were characterized by Powder X-Ray Diffraction (PXRD), Transmission Electron Microscopy (TEM), and N2 adsorption-desorption. The pore size distribution of β-MnO2 was tuned by the different hard templates and their preparation details. Catalytic activities in CO oxidation and N2O decomposition were tested and the mesoporous β-MnO2 samples demonstrated superior catalytic activities compared with their bulk counterpart.
Keywords: mesoporous; pyrolusite; CO oxidation; N2O decomposition; textural properties mesoporous; pyrolusite; CO oxidation; N2O decomposition; textural properties
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ren, Y.; Ma, Z.; Dai, S. Nanosize Control on Porous β-MnO2 and Their Catalytic Activity in CO Oxidation and N2O Decomposition. Materials 2014, 7, 3547-3556.

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