Preparation of Zinc Phthalocyanine-Calcium Alginate Gel Beads and its Use for Photocatalytic Oxidation Decolorization of Methyl Orange

Abstract:

A supported photocatalyst zinc phthalocyanine-calcium alginate gel beads (Zn-MPc-SA) was prepared through the mixture of water-soluble zinc phthalocyanine (Zn-MPc) and sodium alginate was drip into 5% (w/v) CaCl₂ solution. The Zn-MPc-SA was characterized by IR. Methyl orange was selected as a substrate to investigate the photocatalytic activity of Zn-MPc-SA. The results shown that: the surplus of methyl orange was 22.05% at the condition of pH 3, methyl orange 10mg/L 25mL, H₂O₂ 50μL, Zn-MPc-SA 0.1460g and visible light irradiation for 3h. Zn-MPc-SA remains efficient in repetitive test cycles with no obvious degradation of catalytic activity. The reaction mechanism was likely to involve free hydroxyl radicals.

• Periodical: Materials Science Forum (Volumes 809-810)
• Pages: 252-257
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.809-810.252
• Online since: December 2014
• Authors: Min Hong Xu*, Hai Feng Chen, Guo Xiang Pan, Pei Song Tang
• Keywords: Gel Beads, Methyl Orange, Photocatalytic Oxidation, Sodium Alginate, Zinc Phthalocyanine

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