• 文献标题:   Graphene oxide-grafted plasmonic Au@Ag nanoalloys with improved synergistic effects for promoting hot carrier-driven photocatalysis under visible light irradiation
  • 文献类型:   Article
  • 作  者:   LI S, ZHAO JH, LIU GY, XU LL, TIAN Y, JIAO AX, CHEN M
  • 作者关键词:   plasmonic photocatalysi, bimetallic au@ag nanoalloy, graphene oxide support, synergistic effect, localized surface plasmon resonance, photoinduced electrontransfer
  • 出版物名称:   NANOTECHNOLOGY
  • ISSN:   0957-4484 EI 1361-6528
  • 通讯作者地址:  
  • 被引频次:   7
  • DOI:   10.1088/1361-6528/abd128
  • 出版年:   2021

▎ 摘  要

Plasmonic metallic nanostructure with unique hot carrier-driven photocatalysis has recently emerged as a promising photocatalyst. Herein, we show that the plasmonic photocatalysis can be significantly promoted by supporting bimetallic Au@Ag nanoalloys (NAs) on graphene oxide (GO). The obtained Au-3@Ag-1/GO (molar ratio of Au to Ag similar to 3:1) with improved synergistic effects provides a remarkable higher visible-light (>400 nm) photocatalytic activity for a complete degradation (99.36%) of tetracycline hydrochloride (TCH) molecules within 70 min, while about 61.74% or 62.38% via monometallic Au/GO or Ag/GO. The optimum photocatalytic performance is attributed to the production of high yield hot carriers on NAs with enhanced localized surface plasmon resonance property and the pronounced photoinduced electron-transfer ability of modified GO support by overgrowth of NAs. These findings enable the optimal Au-3@Ag-1/GO to become an appealing high-performance photocatalyst for promoting diverse photochemical reactions.