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- W1852549002 abstract "Galvanic replacement of silver (Ag) by platinum (Pt) on bi-metallic nanorods (NRs) having gold (Au) core and silver shell ([email protected]) resulted in discontinuous coating of Pt over Au ([email protected]) NRs. However, a novel method has been developed in this work for the preparation of Au NRs having smooth and continuous coating of Pt ([email protected] NRs) using galvanic replacement reaction of [email protected] NRs in presence of sulphuric acid. Selective blocking by the bisulfate ions that are adsorbed on Pt surface, preventing Pt on Pt deposition seems to be the mechanism of formation of [email protected] NRs. Effect of the nature of Pt shell (i.e. whether continuous or discontinuous) on SERS activity of the NRs was investigated with methylene blue (MB) as a reporter molecule. The specific enhancement of the Raman signals were in the order [email protected] Pt-C NRs < Au NR < [email protected] NRs. Catalytic reduction of MB by NaBH4 using the NRs also followed a similar trend with [email protected] NRs showing almost three times better activity than Au and [email protected] NRs." @default.
- W1852549002 created "2016-06-24" @default.
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- W1852549002 date "2016-02-01" @default.
- W1852549002 modified "2023-10-13" @default.
- W1852549002 title "Tuning the surface enhanced Raman scattering and catalytic activities of gold nanorods by controlled coating of platinum" @default.
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- W1852549002 doi "https://doi.org/10.1016/j.jcis.2015.10.036" @default.
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