Photocatalytic Oxidative Decolorization of Methyl Orange with Iron Phthalocyanine/Calcium Alginate Gel Beads

Abstract:

A photocatalyst iron phthalocyanine/calcium alginate gel bead (FePc@SA) was prepared through the mixture including iron tetra (N-carbonylacrylic) aminophthalocyanine (FePc) and sodium alginate dropped into 5 % (w/v) CaCl₂ solution to get gel beads. The color of gel ball was black and the average diameters of gel ball before and after drying were 3.19 mm and 1.20 mm, respectively. Methyl orange was selected as a substrate to investigate the photocatalytic activity of FePc@SA. The results shown that the remaining rate of methyl orange was 19.51 % under the condition of methyl orange 10 mg/L 25 mL, pH value was 3, the dosage of H₂O₂ was 50 μL, FePc@SA was 0.2 g and visible light irradiation for 3 h. The results indicated that FePc@SA/H₂O₂ system had an obvious synergistic effect on photocatalytic oxidative decolorization of methyl orange. The decolorization process conformed to the first order kinetics equation, and the half-life of FePc@SA was 76.7 min. Simple preparation methods and excellent photocatalytic properties made FePc@SA became an ideal high performance photocatalytic material, which was applied to deal with wastewater containing organic pollutants.

• Periodical: Key Engineering Materials (Volume 703)
• Pages: 301-305
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.703.301
• Online since: August 2016
• Authors: Min Hong Xu*, Jian Li Ma, Meng Xia Qian, Hui Na Qin
• Keywords: Calcium Alginate, Gel Beads, Iron Phthalocyanine, Methyl Orange, Photocatalytic

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