The photocatalytic degradation of Methyl Green in presence of Visible light with photoactive Ni0.10:La0.05:TiO2 nanocomposites

In this paper, we have done the photodegradation of Methyl green dye in presence of prepared Ni0.10:La0.05:TiO2 nanocomposites. The nanocomposites of Ni0.10:La0.05:TiO2 was prepared by the solution impregnation method. The characterization of Synthesized TiO2 and Ni0.10:La0.05:TiO2 nanocomposites were done by X-Ray Diffractometer, SEM, TEM, UVVis, FT-IR, Band gap energy and BET. The photocatalytic degradation of Methyl Green has been done in presence of TiO2 and Ni0.10:La0.05:TiO2 nanocomposites. The presence of anatase and rutile phase in the nanocomposites has been confirmed by XRD analysis. The photocatalysts particle was found in nanodiamension in morphology. The surface area was observed 34.72 and 96.58 m 2 /g for the TiO2 and Ni0.10:La0.05:TiO2 nanocomposites. The band gap energy was observed 3.2 and 3.0 eV for the TiO2 and Ni0.10:La0.05:TiO2 nanocomposites. The photocatalytic degradation behaviour of photocatalysts was investigated by considering different parameters such as effect of concentration, effect of amount of photocatalyst, effect of pH, effect of temperature, adsorption and kinetics. The 90-98 % photodegradation of Methyl Green has been found at 7 pH, 25 ppm concentration of dye, 800 mg/L amount of photocatalyst and 50 min illumination of visible light in presence of Ni0.10:La0.05:TiO2 while 10-18 % in presence of neat TiO2 . The photodegradation of Methyl Green was following the first order kinetics. Keyword: Photodegradation, photocatalyst, photocatalysis, Methyl Green, nanocomposite. -------------------------------------------------------------------------------------------------------------------------------------Date of Submission: 21-08-2017 Date of acceptance: 08-09-2017 -------------------------------------------------------------------------------------------------------------------------------------