Photoelectrochemical degradation of 4-chlorocatechol at TiO2 electrodes

Comparison between sorption and photoreactivity

Janet M. Kesselman, Nathan S Lewis, Michael R. Hoffmann

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

The TiO2-catalyzed photodegradation of a strongly adsorbing substrate, 4-chlorocatechol, has been investigated as a function of solution concentration and pH at illuminated polycrystalline TiO2 electrodes operated at a constant current density. The results are compared to the previously determined sorption behavior of 4-chlorocatechol. The initial rates of 4- chlorocatechol photodegradation measured at pH 3, 5, and 8 and solution concentrations of 20, 50, and 200 μM show a linear correlation with the concentration of the sorbed substrate.

Original languageEnglish
Pages (from-to)2298-2302
Number of pages5
JournalEnvironmental Science and Technology
Volume31
Issue number8
DOIs
Publication statusPublished - Aug 1997

Fingerprint

Photoreactivity
Photodegradation
photodegradation
Sorption
electrode
sorption
substrate
Degradation
degradation
Electrodes
Substrates
density current
Current density
4-chlorocatechol
comparison

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Photoelectrochemical degradation of 4-chlorocatechol at TiO2 electrodes : Comparison between sorption and photoreactivity. / Kesselman, Janet M.; Lewis, Nathan S; Hoffmann, Michael R.

In: Environmental Science and Technology, Vol. 31, No. 8, 08.1997, p. 2298-2302.

Research output: Contribution to journalArticle

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