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Journal Article
Research Support, Non-U.S. Gov't
Ag 3 PO 4 /rectorite nanocomposites: Ultrasound-assisted preparation, characterization and enhancement of stability and visible-light photocatalytic activity.
Ultrasonics Sonochemistry 2017 January
To overcome the drawback of low stable brought by the transformation of Ag+ into Ag, a highly efficient and stable photocatalyst Ag3 PO4 /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, N2 adsorption-desorption, room-temperature photoluminescence spectra, Fourier transform infrared spectrum measurements and UV-vis diffuse reflectance spectra. The absorption edges of the Ag3 PO4 /rectorite display a noticeable shift to the visible light region as compared to that of the Ag3 PO4 . Compared with bare Ag3 PO4 , the Ag3 PO4 /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 Ag3 PO4 /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 Ag3 PO4 /rectorite nanocomposites in photocatalytic degradation of organic pollutants.
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