Photocatalytic degradation of chlorophenols using star block copolymers: Removal efficiency, by-products and toxicity of catalyst

Seung Gun Chung, Yoon Seok Chang, Jae Woo Choi, Kyung Youl Baek, Seok Won Hong, Seong Taek Yun, Sang-Hyup Lee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This study investigated the photocatalytic degradation of chlorophenols using two different types of porphyrin core star block copolymers (P-PSD and P-PD) with irradiation using visible light. Both P-PSD and P-PD catalysts show similar tendencies in the degradation of chlorophenols. Pentachlorophenol degraded faster than other chlorinated phenols (pentachlorophenol. >. 2,4,6-trichlorophenol. >. 2,4-dichlorophenol). The removal rate of chlorophenols using P-PSD was higher than the removal rate using P-PD, a difference which could be attributed to the hydrophobicity of P-PSD. The degradation intermediates and by-products of the chlorophenols were also identified. The analysis results revealed that the degradation of highly-chlorinated phenols was more rapid than the degradation of the less-chlorinated phenols, as confirmed by residual chlorinated compound and chloride ions that were released. The newly synthesized P-PSD catalyst is non-toxic to bacteria. For these reasons, the process of photocatalytic degradation using porphyrin core star block copolymers has potential advantages for the degradation of dissolved chlorophenol pollutants in water.

Original languageEnglish
Pages (from-to)921-928
Number of pages8
JournalChemical Engineering Journal
Volume215-216
DOIs
Publication statusPublished - 2013 Jan 5

Fingerprint

Chlorophenols
chlorophenol
Block copolymers
Stars
Byproducts
Toxicity
catalyst
toxicity
Degradation
degradation
Catalysts
Phenols
Pentachlorophenol
phenol
porphyrin
Porphyrins
PCP
hydrophobicity
Hydrophobicity
removal

Keywords

  • Chlorophenols
  • Hydrophobicity
  • Photocatalytic degradation
  • Porphyrin
  • Star block copolymer
  • Toxicity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

Cite this

Photocatalytic degradation of chlorophenols using star block copolymers : Removal efficiency, by-products and toxicity of catalyst. / Chung, Seung Gun; Chang, Yoon Seok; Choi, Jae Woo; Baek, Kyung Youl; Hong, Seok Won; Yun, Seong Taek; Lee, Sang-Hyup.

In: Chemical Engineering Journal, Vol. 215-216, 05.01.2013, p. 921-928.

Research output: Contribution to journalArticle

Chung, Seung Gun ; Chang, Yoon Seok ; Choi, Jae Woo ; Baek, Kyung Youl ; Hong, Seok Won ; Yun, Seong Taek ; Lee, Sang-Hyup. / Photocatalytic degradation of chlorophenols using star block copolymers : Removal efficiency, by-products and toxicity of catalyst. In: Chemical Engineering Journal. 2013 ; Vol. 215-216. pp. 921-928.
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