Phase formation and stability of Ag–60 at%Cu alloy nanoparticles synthesized by chemical routes in aqueous media

Deo Malviya, Kirtiman ; Srivastava, Chandan ; Chattopadhyay, Kamanio (2017) Phase formation and stability of Ag–60 at%Cu alloy nanoparticles synthesized by chemical routes in aqueous media Phys. Chem. Chem. Phys., 19 (41). pp. 28006-28013. ISSN 1463-9076

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Official URL: http://doi.org/10.1039/C7CP05738E

Related URL: http://dx.doi.org/10.1039/C7CP05738E

Abstract

The present work reports the nature of the evolution of an array of nanoparticles during the synthesis of alloy nanoparticles of Ag–60 at%Cu by the co-reduction of metal salt precursors using NaBH4 in an aqueous medium. This was achieved by studying samples extracted at different intervals of time from the reaction bath. The microstructural characterization reveals that at the initial stage of synthesis, a single-phase solid solution of alloy nanoparticles of very small sizes was formed; however, as the reaction time increases, a network of chains of nanoparticles evolves containing particles rich in either Ag or Cu. Keeping the particles in the reaction bath for a longer time, the chemistry of the network changes further with the chain containing an Ag-rich core and Cu2O as the shell. In the present study, we tried to rationalize the evolution of the phases from the observed results.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry
ID Code:135241
Deposited On:20 Jan 2023 09:32
Last Modified:20 Jan 2023 09:32

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