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

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.

Optical Investigation of Reduced Graphene Oxide / Titanium Dioxide Nanocomposite Thin Films Synthesized by Hydrothermal Method

“…This is partly because creating extremely new optical systems at the macro or nanoscales, combining the mechanical or optical properties of inorganic materials with the distinctive optical responses of organic molecule species constitutes a revolutionary method [10][11][12][13][14][15][16]. The interfaces between organic and inorganic substances are crucial because optical processes are extremely sensitive to their surroundings in most systems [16][17][18][19]. Titanium dioxide (TiO 2 ) and reduced graphene oxide (rGO) nanocomposite is one example of a hybrid organicinorganic material.…”