Electrochemical degradation of 4-chlorophenol at nickel-antimony doped tin oxide electrode

Y. H. Wang, K. Y. Chan*, X. Y. Li, Shu Kong SO

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

The effectiveness of a novel nickel-antimony doped tin oxide electrode for electrochemical degradation of organic pollutants was investigated using 4-chlorophenol (4-CP) as a model toxic organic. The experimental results demonstrate that the optimal Ni content was at Ni:Sn = 1:500 in atomic ratio in the precursor coating solution, whereas the Sb:Sn ratio was set at 8:500. Using the electrode prepared with the optimal Ni doping ratio for 4-CP degradation, the charge-based efficiencies were up to 89 μg C-1 for 4-CP destruction and 15 μg C-1 for TOC removal, which were considerably higher than the efficiencies observed for other electrodes. It is suggested that the enhancement of the electrode for electrochemical oxidation of organics could be attributed to the production of hydroxyl radicals in anodic water electrolysis.

Original languageEnglish
Pages (from-to)1087-1093
Number of pages7
JournalChemosphere
Volume65
Issue number7
DOIs
Publication statusPublished - Nov 2006

Scopus Subject Areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • 4-Chlorophenol
  • Antimony-nickel doped tin dioxide electrode
  • Electro-oxidation
  • Organic degradation
  • Wastewater treatment

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