Chung, Seung-Gun Chang, Yoon-Seok Choi, Jae-Woo Baek, Kyung-Youl Hong, Seok-Won Yun, Seong-Taek Lee, Sang-Hyup 2024-01-20T13:04:15Z 2024-01-20T13:04:15Z 2021-09-01 2013-01 1385-8947 https://pubs.kist.re.kr/handle/201004/128483 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. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA Photocatalytic degradation of chlorophenols using star block copolymers: Removal efficiency, by-products and toxicity of catalyst Article 10.1016/j.cej.2012.11.070 1 CHEMICAL ENGINEERING JOURNAL, v.215-216, pp.921 - 928 CHEMICAL ENGINEERING JOURNAL 215-216 921 928 N scie scopus 000316032100109 2-s2.0-84873043643 Engineering, Environmental Engineering, Chemical Engineering Article ADVANCED OXIDATION PROCESSES PD/FE NANOPARTICLES DECHLORINATION 4-CHLOROPHENOL 2,4,6-TRICHLOROPHENOL 2,4-DICHLOROPHENOL SYSTEM WATER IRON Chlorophenols Photocatalytic degradation Star block copolymer Porphyrin Hydrophobicity Toxicity