Premium
Intensity measurement of resonance Raman spectra of adsorbed dyes by the divided disc method
Author(s) -
Tsukamoto Ikuko,
Machida Katsunosuke
Publication year - 1986
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.1250170208
Subject(s) - adsorption , raman spectroscopy , methyl orange , crystal violet , raman scattering , chemistry , resonance (particle physics) , excited state , analytical chemistry (journal) , protonation , crystal (programming language) , orange (colour) , photochemistry , optics , ion , chromatography , organic chemistry , atomic physics , photocatalysis , catalysis , medicine , physics , food science , pathology , computer science , programming language
Abstract The divided disc method was utilized for the measurement of the resonance Raman intensities of adsorbed dyes. Only one band of crystal violet exhibits appreciable change in its relative intensity when adsorbed on silica gel. The spectral features of the adsorbed crystal violet are similar to those reported for the SERS spectrum of the dye adsorbed on a silver electrode. The resonance Raman spectrum of the adsorbed methyl orange resembles that of the protonated dye crystallized from acidic solution, but the intensities are considerably enhanced on adsorption. From the spectral pattern, the adsorbed methyl orange was proved to take the same azonium form as was reported as the SER scatterer. The Raman scattering coefficients of the CC stretching band of methyl orange excited at 488.0 and 514.5 nm were proved to be enhanced on adsorption of silica gel by factors of ca 50 and 100, respectively.