Ostwald Ripening of the Platinum Nanoparticles in the Framework of the Modified LSW Theory

Autor:	S. V. Yarema, V. I. Kryvetskyi, R. D. Vengrenovich, I. I. Panko, B. V. Ivanskii, M. O. Stasyk
Jazyk:	angličtina
Rok vydání:	2014
Předmět:	Ostwald ripening Materials science Article Subject Diffusion Nanoparticle Thermodynamics Sintering Platinum nanoparticles Chemical reaction Reaction rate symbols.namesake lcsh:Technology (General) symbols Physical chemistry lcsh:T1-995 General Materials Science Dissolution
Zdroj:	Journal of Nanomaterials, Vol 2014 (2014)
ISSN:	1687-4129 1687-4110
Popis:	An analysis of the experimental data related to the mechanism of Pt particles sintering has been carried out using the modified LSW theory. The size distribution for the Pt nanoparticles at the stage of Ostwald ripening fits the generalized Lifshitz-Slyozov-Wagner model calculated with the assumption of two parallel mechanisms involved in the nanoparticles growth (dissolution): diffusion and Wagner’s (controlled by the chemical reaction rate). Comparison between the experimental histograms and the curves calculated theoretically proves the governing role of the Wagner’s mechanism (chemical reaction) in the Pt nanoparticles growth.
Databáze:	OpenAIRE
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