Abstract
Ag2S–TiO2 nanocomposites were prepared by a simple thermal decomposition approach. The synthesized nanocomposites were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) coupled with energy dispersive X-ray analysis (EDXA), transmission electron microscopy (TEM) and diffuse reflectance spectroscopy (DRS). XRD results indicate that the Ag2S–TiO2 nanocomposites consist of nanocrystallites of Ag2S and TiO2. TEM results indicate uniform distribution of Ag2S nanoparticles (8.8 ± 1.9 nm) in the TiO2 matrix. A blue shift of band gap of Ag2S in the nanocomposites compared to bulk Ag2S is observed. The Ag2S–TiO2 nanocomposites act as good catalyst for the photodegradation of Rhodamine B in aqueous solutions in the presence of sunlight.
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