title: Photocatalytic degradation of C. I. Reactive Red 24 solution with K₆SiW₁₁O₃₉Sn(II.).
abstract: Environmental friendly materials, K6SiW11O39Sn (SiWSn), was synthesized. SiWSn photocatalytic decomposition of C. I. Reactive Red 24 (RR24) with the UV-lamp (253.7 nm, 20 W), Xenon lamp filtered less than 390 nm light (500 W) and sun light was investigated. The results showed that RR24 solution could be effectively decolorized with the SiWSn photocatalyst. The photocatalytic degradation efficiency of RR24 with SiWSn was affected by the initial concentration of RR2 solution, the amount of SiWSn and the photolysis time. It is demonstrated that the process of photodegradation of RR24 with SiWSn is a pesudo first-order reaction, which can be described by Langmuir-Hinshelwood equation. Hydroxyl radicals and holes are both the main oxidants in the photocatalytic reaction of RR24 with SiWSn.
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Guixiang
authors: G
authors: Guo
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China. Electronic address: zhuxiuhua1@hotmail.com.
authors: Xiuhua
authors: X
authors: Zhu
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Fuyou
authors: F
authors: Shi
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Anning
authors: A
authors: Wang
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Wei
authors: W
authors: Wang
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Jun
authors: J
authors: Mu
authors: School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Quanli
authors: Q
authors: Wan
authors: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China.
authors: Rong
authors: R
authors: Zhang
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis / Q000528:radiation effects; D017665:Hydroxyl Radical / Q000737:chemistry; D007700:Kinetics; D008027:Light; D009282:Naphthalenesulfonates / Q000737:chemistry; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors; D014001:Tin / Q000737:chemistry; D014227:Triazines / Q000737:chemistry; D017973:Tungsten Compounds / Q000737:chemistry
chemical_list: D001391:Azo Compounds; C000609248:C.I. Reactive Red 24; D009282:Naphthalenesulfonates; D012996:Solutions; D014227:Triazines; D017973:Tungsten Compounds; D017665:Hydroxyl Radical; D014001:Tin
keywords: C. I. Reactive Red 24; K(6)SiW(11)O(39)Sn(II); photocatalytic degradation; reaction kinetics