Plasmonic and photo-electrochemical enhancements of the AuAg@Au/RGO-C3N4 nanocomposite for the detection of DA

Jin Wang; Hui Xu; Shumin Li; Bo Yan; Yuting Shi; Caiqin Wang; Yukou Du

doi:10.1039/c7an01561e

Plasmonic and photo-electrochemical enhancements of the AuAg@Au/RGO-C₃N₄ nanocomposite for the detection of DA

Analyst. 2017 Dec 4;142(24):4852-4861. doi: 10.1039/c7an01561e.

Authors

Jin Wang¹, Hui Xu, Shumin Li, Bo Yan, Yuting Shi, Caiqin Wang, Yukou Du

Affiliation

¹ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China. duyk@suda.edu.cn.

PMID: 29168844
DOI: 10.1039/c7an01561e

Abstract

Plasmonic photocatalyst has attracted significant attention due to its valuable theoretical study and promising practical applications in solar cells, functional composites, and sensors. Herein, an interesting RGO-C₃N₄-supported AuAg core-Au shell (AuAg@Au) nanocomposite has been reported. Due to the surface plasmon resonance (SPR) of AuAg@Au and the accelarated electron transfer and separation of charge carriers induced by the fascinating RGO-C₃N₄ substrate, the newly-generated AuAg@Au/RGO-C₃N₄ nanomaterials show a strong photo-electrochemical response under visible-light irradiation. The AuAg@Au/RGO-C₃N₄ photocatalyst demonstrated an excellent photo-electrochemical performance with a broad concentration linear range of 0.064-780.904 μM and a low detection limit of 0.022 μM, high stability, and good selectivity when applied in the determination of dopamine (DA) under visible-light irradiation.