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The effect of the phase structure on physicochemical properties of TMO materials: a case of spinel to bunsenite

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Abstract

It is worthwhile to comprehensively investigate the relationship between different phase structures and physicochemical properties of TMO materials. For investigating the phase structure effect, spinel Co3O4, NiCo2O4, and bunsenite NiO microflowers were rationally synthesized through a facile solvothermal method combined with a post-annealing process. The phase structures of final products were controlled by adjusting the Ni/Co addition ratio. The SEM and TEM results revealed that these Ni/Co oxides exhibited similar flower-like morphology; this provided convenience for investigation of their physicochemical properties in view of their phase structure. Compared with Co3O4 that exhibited superparamagnetic behavior, NiCo2O4 exhibited ferromagnetic characteristics because of the incorporation of nickel into the spinel structure. Co3O4 and NiCo2O4 demonstrated thermal catalytic ability higher than that of bunsenite NiO due to the more efficient electron transfer ability of the spinel structure. In view of the phase structures, this study provided a prospective case of research on the physicochemical properties of transition-metal oxide (TMO) materials.

Graphical abstract: The effect of the phase structure on physicochemical properties of TMO materials: a case of spinel to bunsenite

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Publication details

The article was received on 16 Aug 2017, accepted on 07 Sep 2017 and first published on 07 Sep 2017


Article type: Paper
DOI: 10.1039/C7CE01491K
Citation: CrystEngComm, 2017, Advance Article
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    The effect of the phase structure on physicochemical properties of TMO materials: a case of spinel to bunsenite

    C. Wang, Y. Zhao, Z. Ximei, D. Su, C. Ding, J. Li and H. Jin, CrystEngComm, 2017, Advance Article , DOI: 10.1039/C7CE01491K

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