Photocatalytic activity of 2,4,6-trichlorophenol by TiO2 mesostructures: Effects of surface modification, calcination temperature and initial pH

Hee Chan Kim, Sang Hyup Lee, Dong Ju Kim, Jae Woo Choi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A titanium mesostructure was synthesized, and its surface was subsequently modified by adsorbing phosphate. The modified structure was later investigated for photocatalytic activity against the organic contaminant 2,4,6- trichlorophenol with UV irradiation. This research found that the effects of calcination temperature, phosphate concentration for surface modification, amine grafting as a function, and initial pH condition contributed to the enhanced degradation rate of the chlorinated phenol. The results of this study demonstrated an increased photocatalytic degradation rate for 2,4,6-trichlorophenol under the following conditions: (1) titanium mesostructure calcined at 600 C; (2) adsorption from a 100 mg/L as PO4-P solution; (3) an amine-functionalized titanium mesostructure synthesized with the molar ration of 1:0.5 (titanium mesostructure: amine group); and (4) acidic condition (pH 4) to promote efficient adsorption of phosphate. This research indicates that phosphate removal and enhanced degradation of organic contaminants could be carried out simultaneously in sewage treatment.

Original languageEnglish
Article number1459
JournalWater, Air, and Soil Pollution
Volume224
Issue number3
DOIs
Publication statusPublished - 2013

Keywords

  • 2,4,6-Trichlorophenol
  • Mesostructured TiO
  • Phosphate
  • Photocatalysis

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

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