The correlation among morphology, oxygen vacancies and properties of ZnO nanoflowers

Hezam, Abdo and Namratha, K. and Drmosh, Q. A. and Lakshmeesha, T. R. and Srikantaswamy, S. and Byrappa, K. (2018) The correlation among morphology, oxygen vacancies and properties of ZnO nanoflowers. Journal of Materials Science: Materials in Electronics, 29 (16). pp. 13551-13560. ISSN 1573-482X

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Despite numerous reports have investigated the effect of morphology on the properties of nanomaterials, its role in tuning nanomaterials properties is still not clear to date. This work introduces a unique attempt to explore the correlation among morphology, surface defects (oxygen vacancies), and properties of nanomaterials. To achieve this task, three different morphologies of ZnO nanoflowers were prepared via hydrothermal method by varying the concentration of diethylamine. It was observed that a change in ZnO nanoflowers morphology results in changes in their optical, photocatalytic, and antibacterial properties. Photoluminescence and X-ray photoelectron spectroscopy analyses reveal the presence of oxygen vacancies (VO) in ZnO nanoflowers with a concentration varies with respect to morphology. VO concentration plays a key role in tuning ZnO band gap and the concentration of reactive oxygen species and thereby tuning optical, photocatalytic, and antibacterial properties of ZnO nanoflowers. Our results suggest that VO concentration, morphology, and properties of ZnO nanoflowers are correlated.

Item Type: Article
Subjects: D Physical Science > Material Science
Divisions: Department of > Earth Science
Department of > Material Science
Depositing User: Manjula P Library Assistant
Date Deposited: 08 Jul 2019 07:23
Last Modified: 08 Jul 2019 07:23

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