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Direct observation of p,p ′‐dimercaptoazobenzene produced from p ‐aminothiophenol and p ‐nitrothiophenol on Cu 2 O nanoparticles by surface‐enhanced Raman spectroscopy
Author(s) -
You Tingting,
Jiang Li,
Yin Penggang,
Shang Yang,
Zhang Dongfeng,
Guo Lin,
Yang Shihe
Publication year - 2014
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4411
Subject(s) - raman spectroscopy , chemisorption , raman scattering , nanoparticle , catalysis , oxide , chemistry , spectroscopy , nanostructure , analytical chemistry (journal) , surface enhanced raman spectroscopy , materials science , nanotechnology , photochemistry , physics , optics , organic chemistry , quantum mechanics
Surface‐enhanced Raman scattering of p ‐aminothiophenol and p ‐nitrothiophenol were obtained on the surface of Cu 2 O nanoparticles, showing novel spectral changes with morphology‐dependent and time‐dependent characteristics. The measured Raman signals were believed to partly originate from the newly produced surface species p,p ′‐dimercaptoazobenzene. The nature of surface chemisorption status during Raman measurement was investigated experimentally and theoretically via combined surface‐enhanced Raman scattering and density functional theory study, indicating that surface catalytic reaction of p ‐aminothiophenol and p ‐nitrothiophenol could take place on the surface of oxide nanostructures as well as coinage metal material. Copyright © 2013 John Wiley & Sons, Ltd.