Synthesis and structural analysis of ZnO-NiO mixed oxide nanocomposite prepared by homogeneous precipitation

Journal article

Authors/Editors

Juma, Albert

Research Areas

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Publication Details

Author list: Juma AO, Matibini A

Publisher: Elsevier

Place: OXFORD

Publication year: 2017

Journal: Ceramics International (0272-8842)

Journal acronym: CERAM INT

Volume number: 43

Issue number: 17

Start page: 15424

End page: 15430

Number of pages: 7

ISSN: 0272-8842

eISSN: 1873-3956

Languages: English-Great Britain (EN-GB)

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Abstract

ZnO-NiO mixed oxide nanocomposite as well as ZnO and NiO nanoparticles were prepared by a simple homogeneous precipitation method from the metal nitrates and calcined at 200 degrees C and 500 degrees C. XRD results indicate that the NiO crystallites in the mixture after calcination at 500 degrees C for 2 h are larger than the ZnO crystallites. The dislocation density decreased for all samples with an increase in crystallinity. The volume fractions of the ZnO and NiO phases in the mixture determined by the direct comparison approach amounts to 35% for ZnO phase and 65% for the NiO phase. The elemental composition obtained from energy dispersive Xray (EDX) shows a relatively higher concentration of Ni than Zn with an atomic ratio of Ni/Zn = 0.69.

Keywords

Homogeneous precipitation, Nanocomposite, Nanomaterials, XRD quantitative analysis

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