Electrochemical oxidation of trichloroethylene using boron-doped diamond film electrodes

Kimberly E. Carter, James Farrell

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

This research investigated the oxidation of trichloroethene (TCE) at boron-doped diamond film electrodes. Flow-through experiments in gastight reactors were performed to determine trichloroethene oxidation products, and rotating disk electrode (RDE) experiments were used to determine TCE oxidation kinetics. RDE experiments were performed over a range in current densities and temperatures in order to elucidate the rate-limiting mechanisms for TCE oxidation. Density functional theory (DFT) simulations were used to investigate the activation barriers for oxidation by direct electron transfer and hydroxyl radicals. Oxidation of TCE produced formate, carbon dioxide, chlorate, and chloride. DFT simulations, experimentally measured apparent activation energies, and linear sweep voltammetry scans indicated that TCE oxidation occurred via direct electron transfer at electrode potentials <2.0 V/SHE, while at higher electrode potentials TCE oxidation also occurred via hydroxyl radicals produced from water oxidation.

Original languageEnglish (US)
Pages (from-to)8350-8354
Number of pages5
JournalEnvironmental Science and Technology
Volume43
Issue number21
DOIs
StatePublished - Nov 1 2009

Fingerprint

Trichloroethylene
Boron
Electrochemical oxidation
Diamond films
trichloroethylene
boron
diamond
electrode
oxidation
Oxidation
Electrodes
formic acid
Rotating disks
hydroxyl radical
Hydroxyl Radical
Density functional theory
Chlorates
electron
Electrons
experiment

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Electrochemical oxidation of trichloroethylene using boron-doped diamond film electrodes. / Carter, Kimberly E.; Farrell, James.

In: Environmental Science and Technology, Vol. 43, No. 21, 01.11.2009, p. 8350-8354.

Research output: Contribution to journalArticle

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