Visible light‐assisted synthesis of Pt/Bi ₂ WO ₆ and photocatalytic activity for ciprofloxacin

Abstract

The Pt/Bi 2 WO 6 composite photocatalyst has been successfully synthesised via a photodeposition method. The morphology and the structure of the Pt/Bi 2 WO 6 composite samples are characterised by X‐ray diffraction, scanning electron microscopy, transmission electron microscopy and UV–vis diffused reflectance spectra. Also discussed are the photocatalytic activities of the obtained samples with different amounts of Pt by investigating the degradation of ciprofloxacin under a Xenon lamp irradiation and it is found that the Pt/Bi 2 WO 6 sample with a 1.0 wt% Pt has the highest photocatalytic activity, which is two times of that compared with the pure Bi 2 WO 6 . Furthermore, the photocatalytic mechanism of the above degradation has been studied.