Adsorption and Oxidation of Thiosulfate on a Platinum Electrode in Acid Solution

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Title:Adsorption and Oxidation of Thiosulfate on a Platinum Electrode in Acid Solution
Creators:
Loučka, Tomáš
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 63, 1, pp. 20-30
Uncontrolled Keywords:Reduction to dithionite, Multilayers of adsorbed sulfur, Colloidal sulfur, Oxidation to dithionate, Electrochemistry

Abstract

The adsorption of thiosulfate on a platinum electrode was measured at the open circuit potential. A monolayer of the adsorption products covers the electrode at lower thiosulfate concentrations. The charge used up during the reduction of the monolayer roughly corresponds to 0.5 electron per surface site (e.p.s.), the charge used up during the oxidation of the monolayer after reduction corresponds approximately to 4 e.p.s. Multiple adsorbed layers, which are presumably constituted mainly by adsorbed sulfur, build up at higher thiosulfate concentrations. The amount of the adsorbed substance increases with increasing thiosulfate concentration and time of adsorption. Desorption from the surface coated by multiple layers can take place in supporting electrolyte solution. The build-up of multiple adsorbed sulfur layers also takes place during adsorption from solutions of colloidal sulfur.

Title:Adsorption and Oxidation of Thiosulfate on a Platinum Electrode in Acid Solution
Creators:
Loučka, Tomáš
Uncontrolled Keywords:Reduction to dithionite, Multilayers of adsorbed sulfur, Colloidal sulfur, Oxidation to dithionate, Electrochemistry
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:63
Number:1
Page Range:pp. 20-30
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19980020UNSPECIFIED
ID Code:1269
Item Type:Article
Deposited On:06 Feb 2009 17:08
Last Modified:06 Feb 2009 16:08

Citation

Loučka, Tomáš (1998) Adsorption and Oxidation of Thiosulfate on a Platinum Electrode in Acid Solution. Collection of Czechoslovak Chemical Communications, 63 (1). pp. 20-30. ISSN 0010-0765

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