NDLI: Electrocatalytic Oxidation of Dithionite at a Cobalt(II)tetrasulfonated Phthalocyanine and 5,10,15,20-Tetrakis-(4-sulfonatophenyl)porphyrin Cobalt(II) Modified Gold Electrode in Alkaline Solution

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Electrocatalytic Oxidation of Dithionite at a Cobalt(II)tetrasulfonated Phthalocyanine and 5,10,15,20-Tetrakis-(4-sulfonatophenyl)porphyrin Cobalt(II) Modified Gold Electrode in Alkaline Solution

Content Provider	Semantic Scholar
Author	Wael, Karolien De Westbroek, Philippe Temmerman, Eduard
Copyright Year	2005
Abstract	In this paper it is shown that the charge transfer kinetics of the oxidation of sodium dithionite at a gold electrode in alkaline solution can be increased by modifying this electrode with cobalt(II)tetrasulfonated phthalocyanine, sodium salt (CoTSPc) or 5,10,15,20-tetrakis-(4-sulfonatophenyl)porphyrin cobalt(II), tetrasodium salt (CoTSPor). Electrodeposition of these catalysts is discussed as well as the oxidation of sodium dithionite at these immobilized catalysts. Despite an observed acceleration in the charge transfer kinetics, sodium dithionite is still oxidized irreversibly. However, the improvement in kinetics has beneficial consequences in the field of electroanalysis of sodium dithionite. Comparison of the oxidation at bare gold and modified gold electrodes showed that with improved charge transfer kinetics at the modified electrodes a higher sensitivity and selectivity and a much lower detection limit is obtained.
Starting Page	263
Ending Page	268
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1002/elan.200403092
Volume Number	17
Alternate Webpage(s)	https://biblio.ugent.be/publication/312905/file/452043.pdf
Alternate Webpage(s)	https://doi.org/10.1002/elan.200403092
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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