Swati, G. and Mishra, Savvi and Yadav, Deepika and Sharma, R. K. and Dwivedi, Dileep and Vijayan, N. and Tawale, J. S. and Shanker, V. and Haranath, D. (2013) High yield synthesis and characterization of aqueous stable zinc oxide nanocrystals using various precursors. Journal of Alloys and Compounds, 571. 1-5. ISSN 0925-8388

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We report a high (similar to 94%) yield synthesis of intrinsic zinc oxide (ZnO) nanocrystal powders having crystallite sizes in the range 13-35 nm using a novel gel-incineration method with inexpensive precursor salts and citric acid as chelating agent. The influence of various precursor chemicals on the nanocrystallite size, morphology and luminescent properties has been studied in detail. It was identified that the ZnO nanocrystals prepared using organic precursor resulted the smallest crystallite size as compared to inorganic precursors. Reaction temperature was optimized to be similar to 900 degrees C by simultaneous thermogravimetric analysis and differential scanning calorimetry studies. Morphology and microstructure of the ZnO nanocrystals have been studied using a scanning electron microscopy. Analysis of photoluminescence excitation and emission spectra enabled us to calculate the band gap energy and defect analysis of as prepared ZnO nanocrystals respectively. The stability of ZnO nanocrystals in water has been verified on time scale and its potential use has been successfully demonstrated for security marker applications.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Elsevier.
Subjects: Chemistry > Physical Chemistry
Materials Science
Metallurgy & Metallurgical Engineering
Depositing User: Users 27 not found.
Date Deposited: 09 Nov 2021 09:59
Last Modified: 09 Nov 2021 09:59
URI: http://npl.csircentral.net/id/eprint/3191

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