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Application of BDD thin film electrode for electrochemical decomposition of heterogeneous aromatic compounds
Abstrakt
The aim of the presented study is to investigate the applicability of electrochemical oxidation of aromatic compounds containing heteroatoms, e.g. waste from production of pesticides or pharmaceutics, at a borondoped diamond (BDD) electrode. The BDD electrodes were synthesized by microwave plasma enhanced chemical vapour deposition (MW PE CVD). Investigation of the electrode surface by optical microscopy and scanning electron microscopy (SEM) confirmed that the synthesized layer was continuous and formed a densely packed grain structure with an average roughness of less than 0:5 μm. The influence of important electrochemical parameters: current density, kind of reactor, pH or mixing operation, on the efficiency of the oxidation was investigated. The fouling of electrode's surface caused by the deposition of organic material was observed during CV and galvanostatic experiments. At low current density the oxidation rate constant k was low, but the current efficiency was relatively high. The BDD can be used successfully to remove heterogeneous aromatic compounds existing either as molecules or cations. During 4 h of electrolysis 95% of aromatic compounds were electrochemically decomposed to mineral forms. It was observed that the influence of the initial pH on mineralization was marginal.
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- Wersja publikacji
- Accepted albo Published Version
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.2478/s11534-012-0058-3
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
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CENTRAL EUROPEAN JOURNAL OF PHYSICS
nr 10,
strony 1183 - 1189,
ISSN: 1895-1082 - Język:
- angielski
- Rok wydania:
- 2012
- Opis bibliograficzny:
- Czupryniak J., Fabiańska A., Stepnowski P., Ossowski T., Bogdanowicz R., Gnyba M., Siedlecka E.: Application of BDD thin film electrode for electrochemical decomposition of heterogeneous aromatic compounds// CENTRAL EUROPEAN JOURNAL OF PHYSICS. -Vol. 10, nr. iss. 5 (2012), s.1183-1189
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.2478/s11534-012-0058-3
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 150 razy