Facile Synthesis of Graphene Oxide-Nano Titania Composites and Evaluation for Visible Light Assisted Photocatalytic Degradation of Rhodamine B

Abstract

Nano titania composite materials exfoliated with varying weight percentage of graphene oxide were synthesized and evaluated for visible light assisted photocatalytic degradation of rhodamine-B. Titanium tetrachloride was hydrolyzed in water medium under organic solvent free conditions followed by ultrasonic addition of the as prepared 1 % aqueous solution of graphene oxide. The morphology and structural properties of the composite materials (1, 2, 5, 10, 15 wt % graphene oxide-nano titania) prepared has been characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-visible diffuse reflectance spectra (UV-Vis DRS), high resolution transmission electron microscope (HRTEM), field emission-scanning electron microscopy (FESEM) and UV-visible spectroscopy. A superior activity was observed with 10 mg of 10 % graphene oxide-nano titania composite material. The 100 % degradation of rhodamine-B was observed in 60 min and other optimum conditions were established.

Graphene oxide–nano‐titania composites for efficient photocatalytic degradation of indigo carmine

“…[24] Earlier, GO-NT composites with varying weight percentages of GO had been synthesized and characterized, and their photocatalytic activity evaluated for the degradation of Congo Red and rhodamine B dyes. [25,26] As an extended application, this paper reports the photocatalytic degradation of indigo carmine (Figure 1) in the presence of synthesized GO-NT composites under visible light irradiation.…”