期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 175, 期 1-3, 页码 992-1000出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2009.10.108
关键词
Dichlorophenol; Photocatalysis; Phthalocyanine; MCM-41; Degradation
资金
- Research Department of University of Guilan
The photocatalytic activity of sulphonated cobalt phthalocyanine immobilized onto MCM-41 was investigated for decomposition of 2,4-dichlorophenol (2,4-DCP) in aqueous solutions. Immobilization of anion sulpho-cobalt phthalocyanine to the walls of MCM-41 was performed by pre-anchorage of 3-(aminopropyl)-triethoxysilane (APTES) onto MCM-41 via post-synthesis method. X-ray diffraction, nitrogen physisorption, diffuse reflectance spectroscopy, energy-dispersive X-ray and FT-IR methods were used to characterize the product. Photocatalytic efficiency of the prepared catalyst for degradation of 2,4-DCP was tested under illumination of UV-A and visible light. The results obtained reveal that the photocatalyst is very active in degradation of 2,4-DCP. The phorodegradation process is completed within 3 h using a close of 0.6 g/L of the catalyst under UV irradiation. The reactions follow a pseudo-first-order kinetics and the observed rate constant values change with 2,4-DCP concentrations. The reproducibility of the catalyst was tested. The reaction intermediates were identified by gas chromatoghraphy-mass spectrometery (GC-MS) technique. (C) 2009 Elsevier B.V. All rights reserved.
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