One-step fabrication of Au-Ag alloys and its application for catalysts and SERS sensors

Wenxian Wei; Dan Yu; Yu Du; Yicheng Ding; Qingli Huang

doi:10.1016/j.saa.2021.120476

One-step fabrication of Au-Ag alloys and its application for catalysts and SERS sensors

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Feb 15;267(Pt 2):120476. doi: 10.1016/j.saa.2021.120476. Epub 2021 Oct 9.

Authors

Wenxian Wei¹, Dan Yu², Yu Du², Yicheng Ding², Qingli Huang³

Affiliations

¹ Testing center, Yangzhou University, Yangzhou city, Jiangsu 225009, China.
² Public experimental research center of Xuzhou Medical University, Xuzhou city, Jiangsu 221004, China.
³ Public experimental research center of Xuzhou Medical University, Xuzhou city, Jiangsu 221004, China. Electronic address: qlhuang@xzhmu.edu.cn.

PMID: 34662768
DOI: 10.1016/j.saa.2021.120476

Abstract

Au-Ag alloy nanoparticles (NPs) with controllable size and composition were synthesized by a facile, one-pot hydrothermal method. Various characterization techniques including TEM, UV-vis, EDX, HAADF-STEM and XPS were used to discuss the influencing factors for the size and composition of Au-Ag alloy NPs. It is obvious that the size and composition of Au-Ag alloy NPs could be adjusted by the experimental parameters. Catalytic and SERS performance of the Au-Ag alloy NPs were further investigated. Ideal catalytic and SERS performance could be also obtained via optimizing the size and composition of Au-Ag alloy. This work is of importance in theory research and practical application of the noble metal nanocomposites.

Keywords: Au-Ag alloy; Catalysis; Hydrothermal; Surface-enhanced Raman spectroscopy.

MeSH terms

Alloys*
Catalysis
Gold
Metal Nanoparticles*
Silver

Substances

Alloys
Silver
Gold