Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants.

Herein, we describe a simple and cost-effective design for the fabrication of a novel ternary RGO/BiOCl/TiO nanocomposites through a simple hydrothermal process. The prepared nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and N adsorption-desorption analysis. Organic contaminants-such as methylene blue (MB), methyl orange (MO), rhodamine B (RhB) and amido black-10B (AB-10B)-were employed as the target pollutants to evaluate the adsorption capacity and photocatalytic activity of RGO/BiOCl/TiO nanocomposites. From experimental data, it was also found that the amount of TiO impressed the photocatalytic performance, and the nanocomposites with 10% of TiO showed the best photocatalytic activity. The improved photocatalytic performance may be mainly due to the narrow band gap, and the charge separation and migration of RGO. Moreover, good recyclability was obtained from RGO/BiOCl/TiO nanocomposites, and scavenger tests indicated that photogenerated holes were the main active species in the reaction system. Therefore, the prepared RGO/BiOCl/TiO nanocomposites have broad applications foreground in pollutants purification.