کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10377888 | 880745 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of the reactant concentrations on the synthesis of ZnO nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
We report on the synthesis of ZnO nanoparticles from Zn(CH3CO2)2 and NaOH in 2-propanol. Nucleation and growth are fast, and hence at longer times the particle size is controlled by coarsening. The coarsening kinetics are independent of the Zn(CH3CO2)2 concentration between 0.5 and 1.25 mM at a fixed [Zn(CH3CO2)2]:[NaOH] ratio of 0.625. The width of the size distribution was found to increase only slightly with aging time. In addition, at a fixed Zn(CH3CO2)2 concentration of 1 mM, the kinetics are independent of the [Zn(CH3CO2)2]:[NaOH] ratio between 0.476 and 0.625. The presence of water in the reaction mixture was found to only slightly affect the coarsening kinetics for water contents larger than about 20 mM. For lower water concentrations, the nucleation and growth of ZnO were very slow. It can be concluded that the synthesis method described provides a reliable source of ZnO nanoparticles due to its insensitivity to the reactant concentrations and the presence of water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 288, Issue 1, 1 August 2005, Pages 313-316
Journal: Journal of Colloid and Interface Science - Volume 288, Issue 1, 1 August 2005, Pages 313-316
نویسندگان
Zeshan Hu, José F. Herrera Santos, Gerko Oskam, Peter C. Searson,