Study on Photocatalytic Efficiency of Hybrid Titanium Dioxide Nanowires/Reduced Graphene Oxide (TiO2NWs/RGO) for Degradation of Methyl Orange Dye

oleh: BASIRAH MOHD AZAM

Format: Article
Diterbitkan: Academy of Sciences Malaysia 2022-03-01

Deskripsi

The major concern of this research is to improve photocatalytic efficiency by implementation of hybrid TiO2NWs/RGO for dye degradation. The TiO2NWs/RGO was prepared using fabrication method. Titanium (IV) oxide powder and graphite were used as precursors to synthesis of TiO2NWs and RGO, respectively. Physical and chemical properties of the photocatalyst was investigated by Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Adsorption-desorption nitrogen analysis and their photocatalytic efficiency was studied for methyl orange (MO) degradation. The hybrid almost achieved 100% of MO degradation within 210 minutes and shows the highest photocatalytic activity. Furthermore,  It was fixed to the Langmuir–Hinshelwood model and the degradation of MO dye by each sample obeys first-order reaction kinetics that it shows a good performance of photodegradation rate of dyes by heterogenous catalyst. This is due the 1D/2D heterostructures of TiO2NWs/RGO hybrid that has a large surface area, unique optical properties, flexible structure and excellent mobility of charge carriers.