期刊
MATERIALS RESEARCH EXPRESS
卷 5, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aa9f9d
关键词
MgCo2O4 nanostructure; template-free synthesis; hierarchical porosity; catalysis
资金
- Natural Science Foundation of Fujian Province [2017J01676, 2017J01677, 2017J01733, 2015J01654, 2015J05091, 2015J01632]
- National Natural Science Foundation of China [61376002, 51503036]
- Key Research Foundation for Young Scholars of Fujian Education Department of China [JZ160484, JZ160486]
- Fujian Education Deportment of China [JAT160558, JAS150621, JAT170616]
In this work, hierarchically porous MgCo2O4 nanochain networks were successfully synthesized by a novel template-free method realized via a facile solvothermal synthesis followed by a heat treatment. The morphologies of MgCo2O4 precursor could be adjusted from nanosheets to nanobelts and finally to interwoven nanowires, depending on the volume ratio of diethylene glycol to deionized water in the solution. After calcination, the interwoven precursor nanowires were transformed to hierarchical MgCo2O4 nanochain networks with marco-/meso-porosity, which are composed of 10-20 nm nanoparticles connected one by one. Moreover, the relative formation mechanism of the MgCo2O4 nanochain networks was discussed. More importantly, when evaluated as catalytic additive for AP thermal decomposition, the MgCo2O4 nanochain networks show excellent accelerating effect. It is benefited from the unique hierarchically porous network structure and multicomponent effect, which effectively accelerates ammonia oxidation and ClO4- species dissociation. This approach opens the way to design other hierarchically porous multicomponent metal oxides.
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