Synthesis and characterization of cobalt nickel oxide (CoNi2O4) prepared by one step hydrothermal method

In the present work CoNi2O4 nano particles are synthesized by one step hydrothermal technique using different amount of polyvinylpyrrolidone (0.1, 0.2 and 0.3 g) as the stabilizing agent. The structural analysis shows that the sample with 0.1 g polyvinylpyrrolidone shows amorphous nature and when th...

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Bibliographic Details
Published inMaterials today : proceedings Vol. 64; pp. 1694 - 1700
Main Authors Anupama, B., Raguram, T., Rajni, K.S.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2022
Subjects
Band gap
CoNi2O4
EDS
FESEM
XRD
XRD
Band gap
EDS
CoNi2O4
FESEM
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Summary:In the present work CoNi2O4 nano particles are synthesized by one step hydrothermal technique using different amount of polyvinylpyrrolidone (0.1, 0.2 and 0.3 g) as the stabilizing agent. The structural analysis shows that the sample with 0.1 g polyvinylpyrrolidone shows amorphous nature and when the amount of polyvinylpyrrolidone (PVP) increases, the crystalline size increases from 6 to10 nm showing the improved crystallinity. EDS analysis shows the presence of Co, Ni and O. FE-SEM analysis shows the transformation of leafy structure to fibrous structure when the PVP amount is increased. From the optical studies, the optical bandgap is found to decreases from 4.12 to 3.63 eV.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2022.05.402