Jump to main content
Jump to site search

Issue 41, 2020
Previous Article Next Article

Unravelling the efficient catalytic performance of ozone decomposition over nitrogen-doped manganese oxide catalysts under high humidity

Author affiliations

Abstract

Catalytic decomposition, as a promising method for ozone elimination from ground level air or indoors, is, however, still incredibly challenging, due to the lack of stability of the available catalysts. Herein, a series of nitrogen-doped MnO-Mn2N0.86@C catalysts were prepared by pyrolysis of manganese acetate and melamine mixtures. Nitrogen-doping into the manganese oxides was observed at a high pyrolysis temperature, and this resulted in the increase of the oxygen vacancy density on the surface of the catalyst. Furthermore, the Mn species of the tubular MnO-Mn2N0.86@C-850 catalyst were coated by a carbon layer, and this could significantly improve the water vapor resistance of the catalyst under high humidity. The ozone decomposition conversion reached nearly 100% using the MnO-Mn2N0.86@C-850 catalyst, and this is clearly better than the widely studied OMS-2 catalyst and active carbon. Combined with the results of the catalytic performance and the Mn species in the catalysts, the ozone decomposition activities were revealed in the order: Mn2N0.86 > MnO2 > MnO > Mn3O4 > Mn2O3. The MnO-Mn2N0.86@C-850 catalyst showed the highest activity and stability, and this can be ascribed to the existence of a high surface area and increased oxygen vacancy density on the surface of the catalyst through nitrogen doping, as well as the presence of a hydrophobic carbon layer.

Graphical abstract: Unravelling the efficient catalytic performance of ozone decomposition over nitrogen-doped manganese oxide catalysts under high humidity

Back to tab navigation

Supplementary files

Article information


Submitted
02 Sep 2020
Accepted
01 Oct 2020
First published
02 Oct 2020

New J. Chem., 2020,44, 17993-17999
Article type
Paper

Unravelling the efficient catalytic performance of ozone decomposition over nitrogen-doped manganese oxide catalysts under high humidity

C. Fang, C. Hu, D. Li, J. Chen and M. Luo, New J. Chem., 2020, 44, 17993
DOI: 10.1039/D0NJ04393A

Social activity

Search articles by author

Spotlight

Advertisements