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Synthesis and Characterization of Multi-Angular Branched ZnO Microstructures and Peculiar Nanopushpins Obtained by Thermal Treatment from Compacted ZnS Powder

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Abstract:

Multi-angular branched ZnO microstructures with rods-shaped tips and nanopushpins with hexagonal cap on top have been synthesized by a simple thermal treatment process of compacted ZnS powder used as starting material and substrate. The structures have been grown at different temperatures (800, 900 and 1000 °C) for 60 min, in a constant nitrogen environment at atmospheric pressure via a catalyst-free process. XRD results of the as-grown products from ZnS powder show a significant reduction in the cubic zincblende phase to the hexagonal wurtzite phase with the increase of treatment temperature, as compared to the bulk value. Post-anneal analyses indicated that the transformation of morphologies of the as-grown structures also depends strongly on the treatment temperature. The proposed method represents an easy and economical way to grow complex structures of ZnO, with a relatively short time, furthermore, without the neediness of use an external substrate to grow. These new and interesting nanostructures have potential in applications such as optoelectronics.

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Periodical:

Solid State Phenomena (Volume 286)

Pages:

23-30

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.286.23

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Online since:

January 2019

Authors:

J.R. Mora, G. Flores-Carrasco*, Mauricio Pacio, T.G. Díaz-Rodríguez, Héctor Juárez

Keywords:

Nanostructures, Thermal Treatment, Zinc Oxide (ZnO), ZnS

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* - Corresponding Author

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