Nanosize Control on Porous β-MnO2 and Their Catalytic Activity in CO Oxidation and N2O Decomposition |
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| Authors: | Yu Ren Zhen Ma Sheng Dai |
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| Institution: | 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; E-Mail: |
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| Abstract: | 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. |
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| Keywords: | mesoporous pyrolusite CO oxidation N2O decomposition textural properties |
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