Abstract
A series of novel bismuth oxyhalide Ag/BiOX (X=Cl, Br, I) composite photocatalysts were synthesized by a solution-based photodeposited method at room temperature. The resulting products were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) emission spectroscopy, UV-Vis diffuse reflectance spectroscopy (DRS), and N2 physical adsorption. The photocatalytic activity of the samples was evaluated by photocatalytic degradation of acid orange II under visible light (420 nm<λ<660 nm) irradiation. Analysis by N2 physical adsorption showed that deposition of Ag decreased the specific surface area of the catalyst. UV-Vis DRS analysis indicated that the presence of Ag could result in surface plasmon absorption, effectively increasing the visible light absorption ability of BiOCl and BiOBr. Furthermore, PL analysis (Article)
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