Visible-light-driven photocatalysis of heterostructure Ag/Bi2WO6 nanocomposites and their photocatalytic degradation of dye under visible light irradiation

摘要

Ag/Bi2WO6 nanocomposites were successfully synthesized by a combination of hydrothermal method and ultrasonic vibration. The phases, vibration modes, constituents and morphologies were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The visible-light-driven photocatalytic activitiy of 0-10 wt% Ag/Bi2WO6 samples was studied by determining the photodegradation of rhodamine B under xenon lamp. In this research, 10 wt% Ag/Bi2WO6 nanocomposites exhibit the highest efficiency and have the promising photocatalytic properties for waste water treatment.