Nanosize control on porous β-MnO2 and their catalytic activity in CO oxidation and N2O decomposition

Yu Ren, Z. Ma, S. Dai

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
2 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)3547-3556
Number of pages10
JournalMaterials
Volume7
Issue number5
DOIs
Publication statusPublished - 6 May 2014

Keywords

  • Mesoporous
  • Pyrolusite
  • CO oxidation
  • N2O decomposition
  • Textural properties

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