SYNTHESIS OF AG DECORATED TIO2 NANONEEDLES FOR PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE DYE 2021-2022

Author (s) : Dr.D.GOPINATH

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Abstract :
Water pollution due to the discharge of industrial effluents such as dyes is a serious concern that requires a potential remedy. In this context, photo catalysis is a potent and eco friendly strategy to degrade these toxic water effluents. In this study, a novel approach to prepare TiO2 nano needles decorated with Ag nanoparticles is reported. The sample was prepared using modified photo deposition and was annealed at 400 °C. The x-ray diffraction (XRD) revealed that TiO2 in anatase phase with the presence of Ag were prepared successfully. The corresponding crystalline size of TiO2 and Ag were 6.86nmand 3.94 nm, respectively. The scanning electron microscopy (SEM) showed that the prepared TiO2 exhibited nanoneedles structure decorated with Ag nanoparticles. The prepared sample exhibited impressive photocatalytic performance toward degrading of 50 ppm Methyl Blue (MB) in the presence of UV irradiation. Using catalyst dose of 4mg the photodegradation efficiency (PDE) reached to 98.7% after 50 min of UV irradiation. This improved photocatalytic activity is attributed to high catalytic activity and surface area of the synthesized Ag decorated TiO2 nanoneedles.

Keywords : UV irradiation, TiO2 nanoneedles, Photocatalysis.

Conference Date : 17/09/2021

Pages : 132

Paper ID : IESMDT130