Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation

Chem. J. Chinese Universities ›› 2005, Vol. 26 ›› Issue (12): 2273.

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Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation

HUANG Ying-Ping^1*, LIU De-Fu¹, ZHANG Shui-Ying¹, ZHANG De-Li¹, MA Wan-Hong², ZHAO Jin-Cai²

1. Research Center for Eco-environmental Sciences, China Three Gorges University, Yichang 443002, China;
2. Research Center of Molecule Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

Received:2004-10-18 Online:1905-03-14 Published:1905-03-14
Contact: HUANG Ying-Ping;E-mail:Huangyp@ctgu.edu.cn

Abstract

Abstract:

A photooxidative system for degradation of organic dye pollutant RhB as an objective compound was reported under visible irradiation(λ＞450 nm) by using Fe³⁺/H₂O₂as the Fenton reagent. It was found that, in the system with pH＜3.0, visible light irradiation significantly accelerates the degradation process by photosensitive effect. After 160 min the RhB was mineralized with a yield of 71.8%. Bromocresol green reaction spectrophotometrically, spin-trapping electron paramagnetic resonance, UV-Vis spectroscopy, IR and total organic carbon(TOC) measurements were used to detect the photoreaction process. The photocatalytic degradation pathway mainly involves the formation of ^·OH and carboxylie acids are the main intermediate products. H₂O₂ of Fe³⁺/H₂O₂/RhB system was utilized lowlier than that of supermolecular metal/organie complexes or supported catalysts system.

Key words: Fenton; Rhodamine B; Photocatalysis; Degradation, Fenton, Rhodamine B, Photocatalysis, Degradation

CLC Number:

O643

TrendMD:

HUANG Ying-Ping, LIU De-Fu, ZHANG Shui-Ying, ZHANG De-Li, MA Wan-Hong, ZHAO Jin-Cai. Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation[J]. Chem. J. Chinese Universities, 2005, 26(12): 2273.

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Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation

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