Voltammetric studies of the behavior of carbon black during phenol oxidation on Ti/Pt electrodes

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1838711· OSTI ID:653530

Boudenne, J L; Cerclier, O; Bianco, P ^[1]

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1. Univ. de Provence, Marseille (France)

Oxidation of phenol on platinum electrodes rapidly leads to the formation of a passivating film on the surface of these electrodes. Studies of cyclic voltammetry and chronoamperometry combined with high-performance liquid chromatography (HPLC) analyses have shown that the presence of carbon black avoids these phenomena of passivation and thus allows the complete mineralization of phenol. The nature of carbon black and the pH value are two important factors which are studied here. VULCAN XC-72 R, an intrinsic p-type semiconductor, having a large specific area, showed all its efficiency when cyclic voltammetry experiments were carried out in an acid medium (pH 2.2). HPLC analyses revealed the appearance of several by-products such as hydroquinone and benzoquinone, and maleic and fumaric acids.

• Sponsoring Organization: USDOE
• OSTI ID: 653530
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 8 Vol. 145; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
40 CHEMISTRY
54 ENVIRONMENTAL SCIENCES
CARBON BLACK
OXIDATION
PASSIVATION
PHENOL
PLATINUM
TITANIUM
WASTE WATER
WATER TREATMENT