Photocatalytic Activity of Magnetically Separable TiO2/SiO2/Fe3O4 Composite for Dye Degradation

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Tarek. A. Gad-Allah¹  Toshinori Kojima²  Shigeo Satokawa²  Shigeru Kato² 

[1]Water Pollution Research Department, National Research Centre, Egypt

[2]Department of Materials and Life Science, Seikei University

关键词: Magnetic Separation;    TiO2;    Photooxidation;    Methyl Orange;   

DOI  :  10.1252/jcej.10we267

来源: Maruzen Company Ltd

【 摘 要 】

References(19)Cited-By(5)In the present study, a magnetically separable photocatalyst (TiO2/SiO2/Fe3O4) has been prepared and used for the photooxidation of methyl orange (MO) dye. The effects of various reaction conditions such as dye concentration, catalyst dose, and pH on the reaction rate were investigated to enhance the photooxidation process. Thephotocatalytic oxidation of MO was found to follow half-order kinetics. The optimum reaction conditions were found to be a 2000 ppm TiO2 catalyst dose in an acidic medium. A higher catalyst load had no effect on the degradation rate. The dye concentration negatively affected the reaction rate because of the reduced light transmittance inside the photoreactor. The catalyst could be reused several times with nearly the same activity and thus the final cost of the treatment process could be reduced.

【 授权许可】

Unknown