Open AccessSurface-enhanced Raman scattering of gold/graphene oxide composite materials fabricated by interface self-assembling
Author(s) -
Jian Tang,
Aiping Liu,
Peigang Li,
Jingqin Shen,
W.H. Tang
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.107801
Subject(s) - materials science , graphene , raman scattering , colloidal gold , raman spectroscopy , composite number , rhodamine b , nanotechnology , monolayer , nanoparticle , oxide , chemical engineering , composite material , optics , metallurgy , photocatalysis , chemistry , biochemistry , physics , engineering , catalysis
The colloidal gold nanoparticles (AuNP) are synthesized by the classic Frens' method, and the sandwich-structured AuNP/graphene oxide/AuNP (AuNP/GO/AuNP) composite materials are constructed on the phosphorus doped diamond-like carbon film by the interface self-assembling. The surface enhanced Raman scattering behaviors of the AuNP/GO/AuNP composites are investigated by using the rhodamine B (RhB) as the probe molecules. Our results indicate that the Raman intensity of RhB obtained from the AuNP/GO/AuNP composites shows a 16.5-fold increase over that from the AuNP monolayer due to the coupled effect of chemical enhancement of GO and localized electromagnetic field enhancement of plasmonic gold. The designed composite materials with metal/GO/metal sandwich configuration exhibit great potential applications in biochemical analysis, environmental monitoring, disease controlling, and food safety.