Studies on polynuclear molybdates in the aqueous solution by laser Raman spectroscopy

1983 ◽  
Vol 39 (9) ◽  
pp. 787-794 ◽  
Author(s):  
Katsuo Murata ◽  
Shigero Ikeda
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
Laser Raman Spectroscopy ◽  
Laser Raman

Raman spectroscopy and electrochemistry of water-soluble porphyrins at a silver electrode

1990 ◽  
Vol 68 (5) ◽  
pp. 787-790 ◽  
Author(s):  
Hideo Orita ◽  
Masao Shimizu ◽  
Chizuko Nishihara ◽  
Takashi Hayakawa ◽  
Katsuomi Takehira
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
Raman Spectra ◽  
Metal Cations ◽  
Silver Electrode ◽  
Water Soluble ◽  
Laser Raman Spectroscopy ◽  
Cyclic Voltammograms ◽  
Porphyrin Ring ◽  
Laser Raman

Cyclic voltammetry and laser Raman spectroscopy were applied to investigate insitu the properties and structures of metal meso-tetrakis (p-sulfonatophenyl)porphyrins (MeTPPS, Me = Co, Fe, Mn, Cu, Ni) adsorbed on a silver electrode in 0.05 M H2SO4 aqueous solution. The cyclic voltammograms for O2 reduction were investigated by changing the metal cations in the porphyrin ring. Among the porphyrins examined, only CoTPPS shows catalytic behavior for O2 electrochemical reduction. The Raman spectra of MeTPPS in aqueous solution are very similar to those of metal tetraphenylporphyrins (MeTPP), and the band assignments were carried out on the basis of the results for [FeTPP]2O. The Raman spectra of MeTPPS on a silver electrode were measured under a N2 or O2 atmosphere, changing the applied potentials and the metal cations in the porphyrin ring. Their spectra are very sensitive to metal cations, but not so to applied potential. Keywords: porphyrin, SERS, electrochemistry, dioxygen, silver electrode.

Detection of salts of 2,4-D in aqueous solution by laser raman spectroscopy

1973 ◽  
Vol 7 (10) ◽  
pp. 1417-1429
Author(s):  
J.M. Reeves ◽  
E.B. Bradley ◽  
C.A. Frenzel
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
Laser Raman Spectroscopy ◽  
Laser Raman
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