Bifunctional Ag@Pd-Ag Nanocubes for Highly Sensitive Monitoring of Catalytic Reactions by Surface-Enhanced Raman Spectroscopy

Jumei Li; Jingyue Liu; Yin Yang; Dong Qin

doi:10.1021/jacs.5b03528

Bifunctional Ag@Pd-Ag Nanocubes for Highly Sensitive Monitoring of Catalytic Reactions by Surface-Enhanced Raman Spectroscopy

Jumei Li, Jingyue Liu, Yin Yang, Dong Qin

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107 Scopus citations

Abstract

We report a route to the facile synthesis of Ag@Pd-Ag nanocubes by cotitrating Na₂PdCl₄ and AgNO₃ into an aqueous suspension of Ag nanocubes at room temperature in the presence of ascorbic acid and poly(vinylpyrrolidone). With an increase in the total titration volume, we observed the codeposition of Pd and Ag atoms onto the edges, corners, and side faces of the Ag nanocubes in a site-by-site fashion. By maneuvering the Pd/Ag ratio, we could optimize the SERS and catalytic activities of the Ag@Pd-Ag nanocubes for in situ SERS monitoring of the Pd-catalyzed reduction of 4-nitrothiophenol by NaBH₄.

Original language	English (US)
Pages (from-to)	7039-7042
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	137
Issue number	22
DOIs	https://doi.org/10.1021/jacs.5b03528
State	Published - Jun 10 2015

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ASJC Scopus subject areas

Chemistry(all)
Catalysis
Biochemistry
Colloid and Surface Chemistry

Cite this

Li, J., Liu, J., Yang, Y., & Qin, D. (2015). Bifunctional Ag@Pd-Ag Nanocubes for Highly Sensitive Monitoring of Catalytic Reactions by Surface-Enhanced Raman Spectroscopy. Journal of the American Chemical Society, 137(22), 7039-7042. https://doi.org/10.1021/jacs.5b03528

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abstract = "We report a route to the facile synthesis of Ag@Pd-Ag nanocubes by cotitrating Na2PdCl4 and AgNO3 into an aqueous suspension of Ag nanocubes at room temperature in the presence of ascorbic acid and poly(vinylpyrrolidone). With an increase in the total titration volume, we observed the codeposition of Pd and Ag atoms onto the edges, corners, and side faces of the Ag nanocubes in a site-by-site fashion. By maneuvering the Pd/Ag ratio, we could optimize the SERS and catalytic activities of the Ag@Pd-Ag nanocubes for in situ SERS monitoring of the Pd-catalyzed reduction of 4-nitrothiophenol by NaBH4.",

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10.1021/jacs.5b03528