Preparation of peroxodisulfuric acid using boron-doped diamond thin film electrodes

Authors
Michaud, PA Mahe, E Haenni, W Perret, A Comninellis, C
Citation
Pa. Michaud et al., Preparation of peroxodisulfuric acid using boron-doped diamond thin film electrodes, EL SOLID ST, 3(2), 2000, pp. 77-79
Citations number
18
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHEMICAL AND SOLID STATE LETTERS
ISSN journal
10990062 → ACNP
Volume
3
Issue
2
Year of publication
2000
Pages
77 - 79
Database
ISI
SICI code
1099-0062(200002)3:2<77:POPAUB>2.0.ZU;2-Y
Abstract
The anodic oxidation of sulfuric acid to peroxodisulfuric acid has been inv estigated on boron-doped synthetic diamond electrodes obtained by hot filam ent chemical vapor deposition. The results have shown that high current eff iciency for peroxodisulfuric acid formation can be achieved in concentrated H2SO4 (7.5 mol dm(-3)) and using high current densities (200 mA cm(-2)). T he main side reaction is oxygen evolution. A reaction mechanism, involving the hydroxyl radical, also has been proposed. (C) 1999 The Electrochemical Society. S1099-0062(99)08-120-1. All rights reserved.