However, TiO 2 can only be excited by UV light, which only occupies a small part of the solar spectrum. , TiO 2 nanomaterial has been considered as a promising photocatalyst in the degradation of organic or inorganic pollutants due to its inexpensiveness, nontoxicity, photostability and strong oxidation ability. Since the compounds in wastewater were treated by photocatalytic oxidation in 1976 by Carey et al. It was found that Fe-N-S-tri-doped catalyst exhibited higher visible light photocatalytic activity than that of pure and P25, which was mainly attributed to the small crystallite size, intense light absorbance in visible region, and narrow bandgap energy. Further, the photocatalytic activity of the as-synthesized samples was evaluated by the degradation of phenol under visible light irradiation. DRS results revealed that the light absorbance edge of in visible region was greatly improved by tri-doping with Fe, N, and S elements. XRD results showed that tri-doping with Fe, N, and S elements could effectively retard the phase transformation of from anatase to rutile and growth of crystallite size. XPS analysis indicated that Fe (III) and S 6+ were incorporated into the lattice of through substituting titanium atoms, and N might coexist in the forms of substitutional N (O-Ti-N) and interstitial N (Ti-O-N) in tridoped. The resulting materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflection spectrum (UV-Vis DRS). In high concentrations, hydrogen sulfide can cause death by means of respiratory paralysis, and sulfur dioxide is known to be one of the causes of acid rain and a dangerous component in air pollution.Fe-N-S-tri-doped photocatalysts were synthesized by one step in the presence of ammonium ferrous sulfate. Sulfuric acid is commonly known as battery acid. An important manufactured chemical, sulfuric acid, is produced using sulfur. Even one of Jupiter’s moons owes it’s colors to various forms of sulfur. Sulfur is found in meteorites, volcanoes, and hot springs. Obtained from: pure form or as sulfide/sulfate mineralsĪs a minor component of fats, body fluids, and skeletal materials, this pale yellow element is essential to human life. Name origin: Sanskrit sulvari, arabic sufra
0 kommentar(er)
