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The systematical detection and structure characterization of vanadium‐oxygen species in low concentration solutions by surface‐enhanced Raman spectroscopy experiments and density functional theory calculations
Author(s) -
Wang Weijia,
Zhang Xiaolin,
Wu Shishi,
Xu Bolian,
Li Shuchao,
He Lirong,
Li Xiaohong,
Chen Zhaoxu,
Fan Yining,
Vellaisamy A. L. Roy
Publication year - 2020
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.5964
Subject(s) - vanadium , raman spectroscopy , density functional theory , oxygen , surface enhanced raman spectroscopy , chemistry , characterization (materials science) , spectroscopy , nanoparticle , electrochemistry , inorganic chemistry , electrode , analytical chemistry (journal) , materials science , raman scattering , nanotechnology , computational chemistry , environmental chemistry , organic chemistry , optics , physics , quantum mechanics
Abstract Vanadium–oxygen species are very harmful to the environment and human health, and also some vanadium–oxygen species have good biological and biomedical effects to human beings. Thus, the study of vanadium–oxygen species is very significant. The types of V–O species are very complex. So far, however, the various structures of V–O species cannot be identified clearly. In this work, the surface‐enhanced Raman spectroscopy (SERS) was used to study vanadium–oxygen species in aqueous solution directly. The SERS spectra with high enhancement factor (EF) and detail information were obtained by the enhancement substrates such as gold nanoparticles (AuNPs), Ag mirror, the Au‐deposited Pt electrodes, and rough Au electrodes. The structures of vanadium‐oxygen species in solutions with different concentration and pH had been well‐characterized firstly by the combination of SERS experiments with density functional theory (DFT) calculations. This work will promote the basic study of the V–O species, and it is also a promotion for the SERS and analytical chemistry.