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Published in: Journal of Nanoparticle Research 7/2019

01-07-2019 | Research Paper

Double redox couples manganese oxide nanorods with tunable oxygen defects and their catalytic combustion properties

Authors: Yaoyao Li, Hong Wang, Rongli Zhang, Renchun Yang

Published in: Journal of Nanoparticle Research | Issue 7/2019

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Abstract

The activation process of oxygen is a key step for catalytic oxidation reaction. To accelerate the activation of oxygen, tris-valences manganese oxides with two redox couples of Mn2+/Mn3+ and Mn3+/Mn4+ were constructed. The introduction of Zn promoted an enhanced Mn3+/(Mn2++Mn3++Mn4+) ratio and then produced an appropriate stoichiometric compositions for the Mn2+/Mn3+ and Mn3+/Mn4+ redox couples. The results indicate that oxygen vacancies, as a significant influence factor for catalytic oxidation, heavily rely on the Mn3+ content of the resultant samples. Based on the double redox couples with suitable stoichiometry, the metal ion modified tris-valences manganese oxides presented an enhanced oxygen vacancies content and a better catalytic performance for toluene oxidation compared with the unmodified sample. This study offers a promising route to construct the manganese oxides with two redox couples synchronously with an enhanced Mn3+/(Mn2++Mn3++Mn4+) ratio and oxygen vacancies, resulting in a decreased activating temperature and an increased catalytic performance.

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Appendix
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Literature
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Metadata
Title
Double redox couples manganese oxide nanorods with tunable oxygen defects and their catalytic combustion properties
Authors
Yaoyao Li
Hong Wang
Rongli Zhang
Renchun Yang
Publication date
01-07-2019
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 7/2019
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-019-4569-3

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