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A cube-like Ag@Ag Cl-doped TiO_2/sepiolite(denoted Ag@Ag Cl–TiO_2/sepiolite) was successfully synthesized via a novel method. X-ray diffraction, scanning electron microscopy, energy dispersion X-ray fluorescence, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and diffuse reflectance ultraviolet–visible spectroscopy were performed to determine the structure and physicochemical properties of Ag@Ag Cl–TiO_2/sepiolite. SEM micrographs revealed that Ag@Ag Cl nanoparticles and TiO_2 film are well deposited on the surface of tube-like sepiolite. As a result, Ag@Ag Cl–TiO_2/sepiolite exhibits a red shift relative to TiO_2/sepiolite. Photocatalytic experiments demonstrated that the dosage of catalysts plays an important role during photocatalysis. The photoelectrochemical activities of Ag@Ag Cl–TiO_2/sepiolite and TiO_2/sepiolite were also investigated. Photocurrent responses confirmed that the ability of Ag@Ag Cl–TiO_2/sepiolite to separate photo-generated electron–hole pairs is stronger than that of TiO_2/sepiolite. Methylene Blue degradation is also improved under alkaline conditions and visible light irradiation because more UOH is produced by visible light excitation.This excellent catalytic ability is mainly attributed to the formed Ag nanoparticles and the Schottky barrier at the Ag/TiO_2 interface. Active species analysis indicated that UO2-and h+are implicated as active species in photocatalysis. Therefore, catalysts are excited to produce abundant electron–hole pairs after they absorb photons in photocatalysis.
A cube-like Ag @ Ag Cl-doped TiO_2 / sepiolite (characterized Ag @ Ag Cl-TiO_2 / sepiolite) was successfully synthesized via a novel method. X-ray diffraction, ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and diffuse reflectance ultraviolet-visible spectroscopy were performed to determine the structure and physicochemical properties of Ag @ Ag Cl-TiO_2 / sepiolite. SEM micrographs that that Ag @ Ag Cl nanoparticles and TiO_2 films are well deposited on the surface of tube-like sepiolite. As a result, Ag @ Ag Cl-TiO_2 / sepiolite exhibits a red shift relative to TiO_2 / sepiolite. Photocatalytic experiments demonstrated that the dosage of catalysts plays an important role during photocatalysis. The photoelectrochemical activities of Ag @ Ag Cl-TiO_2 / sepiolite and TiO_2 / sepiolite were also investigated. Photocurrent responses confirmed that the ability of Ag @ Ag Cl-TiO_2 / sepiolite to separate photo-generat ed electron-hole pairs stronger than that of TiO 2 / sepiolite. Methylene Blue degradation is also improved under alkaline conditions and visible light irradiation because more UOH is produced by visible light excitation. this excellent catalytic ability is primarily attributed to the formed Ag nanoparticles and the Schottky barrier at the Ag / TiO 2 interface. Active species analysis indicated that UO2-and h + are implicated as active species in photocatalysis. Thus, catalysts are excited to produce abundant electron-hole pairs after they absorb photons in photocatalysis.