Synthesis and Characterization of Tio2-Rgo Nanocomposite by Pulsed Laser Ablation in Liquid (PLAL-Method)

Abstract

Abstract The graphene oxide was prepared by the modified Hammer method, and then the rGO-TiO2 nano composite was successfully created using Q-switch Nd:YAG pulsed laser(λ=1064 nm, Energy per pulse 1000 mJ, No. of pulses 500, and the pulse duration 10 n sec) (PLAL). Prepared nanomaterials were characterized by a variety of techniques, including UV-Vis. spectroscopy, X-ray diffraction (XRD), FTIR, Field emission scanning electron microscopy (FE-SEM) and EDX. The absorption peak of GO is equal to 230 nm with energy gap 5.391 eV while The edge of absorption for the TiO2-rGO nanocomposite displays a red shift with respect of pure TiO2. Crystallite size of prepared TiO2/rGO nanocomposite was measured by XRD and is equal to 53.97 nm. The intensity of peaks C=C and peaks O-H is lower compared to peaks of pure graphene oxide, indicating the transformation of graphene oxide into reduced graphene oxide. The TiO2/rGO nanocomposite show enhanced adsorption properties. The removal efficiency of GO is 37 %, and The removal effectiveness for rGO-TiO2 nanocompound is 40 %. The TiO2-rGO nanocomposite has high dye adsorption efficiency, and Can be used for the elimination of the Rh B from aqueous solution.