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Journal of Materials Science: Materials in Electronics

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18-06-2018

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

Authors: Abdo Hezam, K. Namratha, Q. A. Drmosh, T. R. Lakshmeesha, S. Srikantaswamy, K. Byrappa

Published in: Journal of Materials Science: Materials in Electronics | Issue 16/2018

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Abstract

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 (V_O) in ZnO nanoflowers with a concentration varies with respect to morphology. V_O 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 V_O concentration, morphology, and properties of ZnO nanoflowers are correlated.

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Title: The correlation among morphology, oxygen vacancies and properties of ZnO nanoflowers
Authors: Abdo Hezam
K. Namratha
Q. A. Drmosh
T. R. Lakshmeesha
S. Srikantaswamy
K. Byrappa
Publication date: 18-06-2018
Publisher: Springer US
Published in: Journal of Materials Science: Materials in Electronics / Issue 16/2018
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-018-9483-4

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