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2012 | 10 | 5 | 1183-1189
Tytuł artykułu

Application of BDD thin film electrode for electrochemical decomposition of heterogeneous aromatic compounds

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
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.
Wydawca

Czasopismo
Rocznik
Tom
10
Numer
5
Strony
1183-1189
Opis fizyczny
Daty
wydano
2012-10-01
online
2012-11-21
Twórcy
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Department of Metrology and Optoelectronics, Gdańsk University of Technology, 11/12 Narutowicza Str., 80-233, Gdańsk, Poland, rbogdan@eti.pg.gda.pl
autor
  • Department of Metrology and Optoelectronics, Gdańsk University of Technology, 11/12 Narutowicza Str., 80-233, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-012-0058-3
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