Adsorption and oxidation of benzoic acid, benzoate, and cyanate at gold and platinum electrodes as probed by potential-difference infrared spectroscopy

Langmuir ◽  
1988 ◽  
Vol 4 (3) ◽  
pp. 599-606 ◽  
Author(s):  
Dennis S. Corrigan ◽  
Michael J. Weaver
Keyword(s):  
Infrared Spectroscopy ◽  
Benzoic Acid ◽  
Potential Difference ◽  
Platinum Electrodes

Characterization of platinum electrodes by infrared spectroscopy

1986 ◽  
Vol 198 (1) ◽  
pp. 65-80 ◽  
Author(s):  
Jay B. Benziger ◽  
F.A. Pascal ◽  
S.L. Bernasek ◽  
M.P. Soriaga ◽  
A.T. Hubbard
Keyword(s):  
Infrared Spectroscopy ◽  
Platinum Electrodes

Variable Temperature Infrared Spectroscopy Investigations of Benzoic Acid Desorption from Sodium and Calcium Montmorillonite Clays

2015 ◽  
Vol 69 (12) ◽  
pp. 1381-1389 ◽  
Author(s):  
Tara M. Nickels ◽  
Audrey L. Ingram ◽  
Dalia K. Maraoulaite ◽  
Robert L. White
Keyword(s):  
Infrared Spectroscopy ◽  
Benzoic Acid ◽  
Variable Temperature ◽  
Montmorillonite Clays

In situ Spectroelectrochemical Study of the Anodic Dissolution of Silicon by Potential-Difference and Electromodulated FT-IR Spectroscopy

1997 ◽  
Vol 51 (4) ◽  
pp. 519-525 ◽  
Author(s):  
F. Ozanam ◽  
C. Da Fonseca ◽  
A. Venkateswara Rao ◽  
J.-N. Chazalviel
Keyword(s):  
Infrared Spectroscopy ◽  
Anodic Dissolution ◽  
Potential Difference ◽  
Free Carrier Absorption ◽  
Rate Limiting Step ◽  
Microscopic Models ◽  
Carrier Absorption ◽  
Ft Ir ◽  
Electrochemical Interfaces

The anodic dissolution of p-Si has been investigated by in situ infrared spectroscopy. The combination of potential-difference and electromodulated spectroscopies allows for the acquisition of a rather complete picture of the various regimes of the dissolution. After a review of general principles for studying electrochemical interfaces, a study of the interfacial oxide layer formed in the electropolishing regime is presented. Quantitative analysis shows that the thickness and quality of the oxide (density and defect content) depend upon electrode potential. Free-carrier absorption detected in electromodulated spectra shows that the blocking character of the oxide is correlated with the buildup of a stoichiometric oxide of low defectivity at sufficiently positive potentials. Furthermore, the dynamic response to the modulation reveals that oxides formed at weak positive potentials interact with electrolyte species through electro-induced adsorptions/desorptions on charged SiOH sites. At more positive potentials, charge is transported across the oxide by charged defects which could be associated with tricoordinated, positively charged SiO species. Finally, results obtained during porous silicon formation at weak positive potentials are presented. Potential-difference spectroscopy indicates that the electrode exhibits a very large specific surface area, and that the surface is covered by SiH bonds. Electromodulated infrared spectroscopy reveals that the SiH species are generated upon anodic current flowing and that the breaking of these bonds is the rate-limiting step of the anodic reaction. These unexpected results have given rise to the elaboration of new microscopic models for the direct anodic dissolution of silicon in fluoride electrolytes.

Near Infrared Spectroscopy of Benzoic Acid Adsorbed on Montmorillonite

2010 ◽  
Vol 43 (4) ◽  
pp. 266-274 ◽  
Author(s):  
Longfei Lu ◽  
Jingong Cai ◽  
Ray L. Frost
Keyword(s):  
Infrared Spectroscopy ◽  
Benzoic Acid ◽  
Near Infrared Spectroscopy ◽  
Near Infrared
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