A novel approach for the oxidative degradation of organic pollutants in aqueous solutions mediated by iron tetrasulfophthalocyanine under visible light radiation.
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.
Tao
Xia
X
Laboratory of Photochemistry, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
Ma
Wanhong
W
Zhang
Tianyong
T
Zhao
Jincai
J
D001391:Azo Compounds / Q000528:radiation effects; D001557:Benzenesulfonates / Q000528:radiation effects; D007211:Indoles / Q000737:chemistry*; D007220:Industrial Waste / Q000517:prevention & control; D008027:Light; D009930:Organic Chemicals / Q000528:radiation effects; D009942:Organometallic Compounds / Q000737:chemistry*; D010083:Oxidants, Photochemical / Q000737:chemistry; D010084:Oxidation-Reduction; D010782:Photolysis; D012235:Rhodamines / Q000528:radiation effects; D020156:Salicylic Acid / Q000528:radiation effects; D012996:Solutions; D014867:Water; D014874:Water Pollutants, Chemical / Q000528:radiation effects*
D001391:Azo Compounds; D001557:Benzenesulfonates; D007211:Indoles; D007220:Industrial Waste; D009930:Organic Chemicals; D009942:Organometallic Compounds; D010083:Oxidants, Photochemical; D012235:Rhodamines; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; C052737:iron tetrasulfophthalocyanine; C029773:rhodamine B; D020156:Salicylic Acid; C014722:2-naphthol orange