Abstract

The nanocomposite of AgBr-TiO2 was prepared by a low temperature method (photolysis) with silver bromide and titanium chloride, and characterized using X-ray diffraction (XRD), energy dispersive spectra (EDS), transmission electron microscope (TEM), scanning electron microscope (SEM), atomic force microscope (AFM) and X-ray photoelectron microscope (XPS). Their ability to degrade dye was examined using UV-Vis microscope. The results from XRD, SEM, TEM and AFM confirmed the formation of nanoparticles with a range of 10-25 nm, and the result from XPS and XRD confirmed existence of Ag metal after irradiation. The AgBr-TiO₂ showed high efficiency for degradation of azo dye (97%) in presence sunlight compared with TiO₂.