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Synthesis of ZnO nanowires with supercritical carbon dioxide and post heat treatment.

08:00 EDT 15th August 2018 | BioPortfolio

Summary of "Synthesis of ZnO nanowires with supercritical carbon dioxide and post heat treatment."

ZnO nanowires are used in applications such as gas sensors and solar cells. This work presents a novel synthesis route for ZnO nanowires using supercritical carbon dioxide and post heat treatment. The method used supercritical carbon dioxide and a precursor solution as reactants to form nanowires on a galvanized surface. After the supercritical carbon dioxide treatment, the substrate was heat treated. The surfaces were characterized with SEM, TEM, EDS, FTIR, XRD and optical spectroscopy. The FTIR results showed that the surface structure had changed from zinc hydroxycarbonate to ZnO during the heat treatment. The nanowires were slightly bent due to the heat treatment according to the SEM images. The presence of ZnO was further confirmed with XRD. The bandgap of the structure was determined by reflectance measurements and showed a value of 3.23 eV. The synthesis method presented in this study offers a unique approach into the formation of ZnO nanowires in a facile, rapid and environmentally friendly process.

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This article was published in the following journal.

Name: Nanotechnology
ISSN: 1361-6528
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