Preparation and characterization of AgCl-Ag_2S nanocomposites via a simple co-precipitation route: utilizing as a photocatalyst for methyl orange degradation

摘要

In this study, AgCl-Ag_2S nanocomposites were successfully synthesized via a simple co-precipitation route. The as-prepared AgCl-Ag_2S nanocomposites were extensively characterized by techniques such as energy dispersive X-ray spectroscopy, diffused reflectance UV-visible spectrum, scanning electron microscopy and X-ray diffraction patterns. The effect of surfactants on morphology and photocatalytic activity was evaluated. The efficiency of AgCl-Ag_2S nanocomposites as a photocatalyst for the decolorization of methylene orange using visible light irradiation has been evaluated. As a result, an enhanced photocatalytic efficiency of AgCl-Ag_2S nanocomposites compared to AgCl nanostructures was obtained due to absorption of wider range of light wavelength by AgCl-Ag_2S nanocomposites. Moreover, as-prepared AgCl-Ag_2S nanocomposite using PEG-600 as surfactant, has the highest photocatalytic activity among the nanocomposites prepared using various surfactants.