Photocatalytic activity for degradation of sulfamethoxazole by Bivo4 using visible light

Abstract

In this study, B1VO4 photocatalysts have been successfully synthesized by hydrothermal method and were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), UV-Vis diffusion reflectance spectra (UV-Vis DRS), and Raman spectroscopy. From XRD, Raman, and UV-Vis DRS results, the as-synthesized B1VO4 showed monoclinic scheelite structure and narrow band gap energy (Eg = 2.35 eV). The morphology of as-prepared powder showed a small crystallite size with different shapes. The photocatalytic performances of the as-prepared sample were evaluated by the degradation of sulfamethoxazole under visible light. Also, H2O2 was added to enhance the photocatalytic activity of BiVO4. It has been noticed that 70% photodegradation of antibiotic occurs on the catalyst surface with visible light irradiation. Besides, the effects of pH and organic salts are also discussed in this study.

Heterogeneous Photocatalysis of Metronidazole in Aquatic Samples

“…A commercially used form of TiO 2 is Degussa P25 nanopowder consisting of 75% anatase and 25% rutile, with a surface area of 45 m 2 g −1 [18,19]. For the photodegradation of pharmaceutical residues, in addition to TiO 2 , other semiconductors such as tungsten(VI) oxide [20,21], ZnO [22,23], Cu 2 O [24,25], and BiWO 6 [26,27] and BiVO 4 [28,29] have also been verified.…”

Photocatalytic Degradation of Valsartan by MoS2/BiOCl Heterojunctions

“…Bismuth-based materials have attracted considerable attention for organic dyes and especially PhACs degradation under visible light irradiation [18]. For instance, promising results came by using bismuth vanadate (BiVO 4 ) for the removal of both organic dyes and antibiotics [19][20][21]. However, despite its low bandgap (2.4 eV), low toxicity and low cost [22], BiVO 4 suffers from excessive electron-hole recombination [23].…”