Surface Defects Improved SERS Activity of Nanoporous Gold Prepared by Electrochemical Dealloying

Autor: Ling Zhang, Zhiyu Jing, Zhexiao Li, Takeshi Fujita
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Nanomaterials, Vol 13, Iss 1, p 187 (2022)
Druh dokumentu: article
ISSN: 2079-4991
DOI: 10.3390/nano13010187
Popis: Nanoporous metals possess excellent catalytic and optical properties that are related with surface morphology. Here, we modulated the ligament surface of nanoporous gold (NPG) by controlling electrochemical dealloying and obtained NPG with an improved enhancement of its surface-enhanced Raman scattering (SERS) property. We found that both high-density atomic steps and kinks on the curved surfaces and high-content silver atoms close to the ligament surface contributed to the high SERS ability. The presented strategy will be useful for the fabrication of nanoporous metal with an excellent surface that is needed for sensing, conversion, and catalytic.
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