title: Ag3PO4/rectorite nanocomposites: Ultrasound-assisted preparation, characterization and enhancement of stability and visible-light photocatalytic activity.
abstract: To overcome the drawback of low stable brought by the transformation of Ag+into Ag, a highly efficient and stable photocatalyst Ag3PO4/rectorite composite was successfully synthesized by ultrasound-assisted precipitation method. The as-prepared samples were characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, N2adsorption-desorption, room-temperature photoluminescence spectra, Fourier transform infrared spectrum measurements and UV-vis diffuse reflectance spectra. The absorption edges of the Ag3PO4/rectorite display a noticeable shift to the visible light region as compared to that of the Ag3PO4. Compared with bare Ag3PO4, the Ag3PO4/rectorite composite by ultrasound-assisted precipitation process exhibits significantly enhanced photocatalytic activity and stable for methyl orange (MO) degradation under visible light irradiation. The improved activity of the Ag3PO4/rectorite photocatalyst could be attributed to the expanded visible light absorption, the enhanced interfacial charge transfer and the inhibited recombination of electron-hole pairs. Therefore, the facile ultrasound-assisted preparation process provides some insight into the application of Ag3PO4/rectorite nanocomposites in photocatalytic degradation of organic pollutants.
authors: School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China; China-Tin Group Co., Ltd., Liuzhou 545006, China. Electronic address: guoyadan88@163.com.
authors: Yadan
authors: Y
authors: Guo
authors: School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China.
authors: Wenchao
authors: W
authors: Yu
authors: China-Tin Group Co., Ltd., Liuzhou 545006, China.
authors: Jinquan
authors: J
authors: Chen
authors: School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China.
authors: Xuegang
authors: X
authors: Wang
authors: School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China.
authors: Bai
authors: B
authors: Gao
authors: School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China.
authors: Guanghui
authors: G
authors: Wang
keywords: Ag(3)PO(4)/rectorite; Methyl orange; Nanocomposites; Photocatalytic; Stability; Ultrasound-assisted preparation