Premium
Ag‐CuO Nanocomposites: Surface‐Enhanced Raman Scattering Substrate and Photocatalytic Performance
Author(s) -
Ye Fen,
Ju Suxiao,
Liu Yuanjun,
Jiang Yuerong,
Chen Hui,
Ge Lihong,
Yan Chao,
Yuan Aihua
Publication year - 2019
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201800257
Subject(s) - rhodamine 6g , nanocomposite , photocatalysis , materials science , raman scattering , substrate (aquarium) , raman spectroscopy , chemical engineering , irradiation , microstructure , rhodamine b , porosity , nanotechnology , photochemistry , composite material , optics , chemistry , catalysis , organic chemistry , molecule , physics , oceanography , engineering , geology , nuclear physics
Porous Ag‐CuO nanocomposites are prepared with a photochemical reduction method. The obtained Ag‐CuO nanocomposites have bifunctions; they can not only be used as surface‐enhanced Raman scattering (SERS) substrates, providing an enhancement factor of 3.86 × 10 7 toward rhodamine 6G (R6G) and 7.08 × 10 7 toward p ‐aminothiophenol, but also can be used as an effective photocatalyst to degrade dyes, including R6G with H 2 O 2 under light irradiation. For example, the Ag‐CuO nanocomposite can degrade 96.7% of R6G within 2 h. It is believed that the porous microstructure provides more “hot‐spots” for SERS and active sites for photocatalytic process, inducing excellent performance. Due to the bifunctions, reuse of the Ag‐CuO SERS substrate is demonstrated with the assistance of light irradiation cleaning process. After eight reuse cycles, the enhancement factor of the substrate to R6G is still retained at 1.45×10 5 .