Growth Kinetics of Zinc Sulphide Nanocrystals Synthesized by Colloidal Thermolysis of Fatty Acid Carboxylates
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Date
2022
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Hindawi
Abstract
Zinc sulphide (ZnS) is an important semiconductor with widespread electronic and catalytic applications. e growth kinetics of
ZnS nanocrystals synthesized by the thermal decomposition of zinc ricinoleate carboxylates in an oleylamine:dodecanethiol (1 :1)
solvent mixture isreported. Crystalline sphalerite ZnS nanocrystals with quantum dot sizes of 2.3–5.3 nm were obtained at
temperatures higher than 240° C. e p-XRD patterns showed a clear relationship between the crystallite sizes and the peak
broadness at a temperature range of 250–300°C. e optical bandgap energies of the ZnS nanocrystals reduced from 4.27 eV to
3.73 eV as the time of reaction increased from 20 to 60 min at 250°C. e activation energy for the growth kinetics of the ZnS
nanocrystals was determined to be 36.24 kJ/mol which compares closely to those reported in the literature for aqueous systems.
Description
This article is already published by Hindawi and is also available at https://doi.org/10.1155/2022/9384592
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Hindawi Journal of Chemistry Volume 2022, Article