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Electrochemical mechanism of silver nanoprisms transformation in aqueous solutions containing the halide ions

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Abstract

The transformation process of 20–50 nm silver nanoprisms in the presence of Cl-, Br-, and I- ions was studied. The threshold concentrations of halide ions that initiate the transformation do not depend on the size of nanoprisms. It was shown that the structure change is caused by the formation of poorly soluble silver complexes on nanoprisms and occurs by an electrochemical mechanism. The induction period preceding the onset of shape transformation is related to the formation of silver halide nanoelectrodes. The electrochemical reactions involving silver and silver halide nanoelectrodes induce restructuring of silver particles the efficiency of which is determined by electrode potentials.

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Funding

This work was supported by the Russian Foundation for Basic Research (Project no. 15-03-04854-a)

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Correspondence to E. V. Abkhalimov.

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The authors declare that they have no conflict of interest.

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Abkhalimov, E.V., Timofeev, A.A. & Ershov, B.G. Electrochemical mechanism of silver nanoprisms transformation in aqueous solutions containing the halide ions. J Nanopart Res 20, 26 (2018). https://doi.org/10.1007/s11051-018-4133-6

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  • DOI: https://doi.org/10.1007/s11051-018-4133-6

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