PHOTOCATALYTIC ACTIVITY OF TiO2 ENHANCED BY DOPING OF COBALT IN PRESENCE OF NATURAL SUN LIGHT

Author (s) : Dr.S.GOWRI, Dr.R.KAVITHA

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Abstract :
In this study, TiO₂, Co doped-TiO₂were synthesized by sol-gel method. All the photocatalysts shows the anatase crystalline phase was confirmed by X-Ray Diffraction Analysis. The Co doped-TiO₂ photocatalyst shows an absorption threshold extended into the visible region and also has smaller particle size compared to Co doped-TiO₂ and TiO₂. Co doped-TiO₂ have higher activity in sunlight than the undoped TiO₂. A Photocatalyst dosage of 100 mg/l is optimum for the degradation of dyes. Acidic pH is more suitable for the degradation of Reactive red 120 in heterogeneous TiO₂ as catalyst compared to alkaline pH.Co doped-TiO₂ highly stable photocatalyst when doing photocatalytic process, the reason is after fifth cycle the photocatalytic rate was 92 %.

Keywords : Photocatalyst, TiO2,Reactive red

Conference Date : 13/11/2020

Pages : 222

Paper ID : 20222