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Controllable Synthesis 3D Hierarchical Structured MnO2@NiCo2O4 and the Morphology-Dependent Activity

Abstract

Hierarchical structures with controlled size, shape and interface are of extremely attractive for their collective properties and synergetic effect. Herein, we report the α-MnO2@NiCo2O4 heterostructures with nanowire and nanosheet morphology, respectively, through hydrothermal reaction and post calcination treatment. The ultralong α-MnO2 was used as seed for Ni-Co precipitant growth and self-assembly. The morphology of the Ni-Co precipitant was tailored by the solvent (water/methanol). After calcination, the shape of the precursor was maintained by the product α-MnO2@NiCo2O4. The α-MnO2@NiCo2O4 demonstrates morphology-dependent performance for the catalytic combustion of dimethyl ether, and the nanosheet-like α-MnO2@NiCo2O4 exhibited better performance than that of the nanowire-like counterpart. The catalytic activity is related with the reducibility, surface oxygen species, and the apparent activation energy.

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Publication details

The article was received on 15 Oct 2017, accepted on 23 Nov 2017 and first published on 27 Nov 2017


Article type: Research Article
DOI: 10.1039/C7QI00637C
Citation: Inorg. Chem. Front., 2017, Accepted Manuscript
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    Controllable Synthesis 3D Hierarchical Structured MnO2@NiCo2O4 and the Morphology-Dependent Activity

    M. Sun, B. Zhang, G. Cheng, H. Yu, F. Ye, J. Zhou, L. Yu and W. Song, Inorg. Chem. Front., 2017, Accepted Manuscript , DOI: 10.1039/C7QI00637C

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