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The effect of concentration in electrochemical oxidation of thiocyanate on platinum electrode

DSpace at IIT Bombay

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Field Value
 
Title The effect of concentration in electrochemical oxidation of thiocyanate on platinum electrode
 
Creator KRISHNAN, P
 
Subject anodic-oxidation
sulfide
electrochemical oxidation
thiocyanate
trithiocyanate
thiocyanogen
cyclic voltammetry
rotating ring-disc electrode voltammetry
spectroelectrochemistry
 
Description Electrochemical oxidation of thiocyanate (SCN-) on platinum electrode in the sulfuric acid medium was studied using cyclic voltammetry, in situ UV-visible absorption measurement, rotating ring-disc electrode voltammetry, and electrical impedance spectroscopy. Two oxidation processes are involved in the electrochemical oxidation of SCN- in sulfuric acid medium. The adsorbed SCN- undergoes oxidation at potential values higher than 0.900 V versus saturated calomel electrode (SCE). Trithiocyanate,(SCN)(-)(3), is formed as a relatively stable product during the first oxidation process. The potential range of (SCN)(-)(3) formation increases with increase in concentration of SCN-, and it is exclusively produced in the potential range of 0.550 to 1.40 V versus SCE with 1.0 M NH4SCN solution. The second oxidation process does not produce any stable product, and the products of second oxidation passivate the electrode surface.
 
Publisher SPRINGER
 
Date 2011-08-29T20:26:55Z
2011-12-26T12:58:45Z
2011-12-27T05:49:13Z
2011-08-29T20:26:55Z
2011-12-26T12:58:45Z
2011-12-27T05:49:13Z
2007
 
Type Article
 
Identifier JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 11(9), 1327-1334
1432-8488
http://dx.doi.org/10.1007/s10008-007-0295-3
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12182
http://hdl.handle.net/10054/12182
 
Language en