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A Novel Approach for the Oxidative Degradation of Organic Pollutants in Aqueous Solutions Mediated by Iron Tetrasulfophthalocyanine under Visible Light Radiation
Author(s) -
Tao Xia,
Ma Wanhong,
Zhang Tianyong,
Zhao Jincai
Publication year - 2002
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20020315)8:6<1321::aid-chem1321>3.0.co;2-m
Subject(s) - chemistry , photodegradation , aqueous solution , photochemistry , radical , pollutant , rhodamine b , degradation (telecommunications) , visible spectrum , methyl orange , irradiation , catalysis , photocatalysis , materials science , organic chemistry , telecommunications , physics , optoelectronics , computer science , nuclear physics
An efficient approach has been developed to decompose toxic organic pollutants. The photodegradation of Rhodamine B (RhB), salicylic acid, and Orange II was examined in the presence of iron tetrasulfophthalocyanine ([Fe(PcS)]) and H 2 O 2 under visible irradiation. It was found that under visible light irradiation, organic pollutants in the [Fe(PcS)]/H 2 O 2 system can be rapidly degraded, but the concentration of [Fe(PcS)] remains nearly unchanged, and this indicates that [Fe(PcS)] has a good catalytic character. EPR results and other experimental results suggest that the light‐activated reaction process involves the formation and reaction of HO . radicals. On the basis of the experimental results, a possible reaction mechanism for the degradation of organic pollutants under visible light illumination in the aqueous [Fe(PcS)]/H 2 O 2 solutions is proposed.