Preparation of Bi2WO6 Powders with Micro-Carbon Spheres Acting as a Template by Refluxing Method

• Published in: Key engineering materials Vol. 748; pp. 22 - 26
• Main Authors: Lin, Yue, Chen, Hai Feng
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.08.2017
• Subjects: Bismuth compounds; Carbon; Chemical synthesis; Illumination; Light; Microspheres; Photocatalysis; Refluxing; Rhodamine; Roasting; Scanning electron microscopy; Sewage; Sodium tungstate; Tungstates; X-ray diffraction; Carbon Microspheres; Reflux Method; Bi2WO6; Template
• ISSN: 1013-9826; 1662-9795; 1662-9795
• DOI: 10.4028/www.scientific.net/KEM.748.22

Firstly, we made the glucose as raw material to prepare carbon microspheres hydrothermal method. Then carbon microspheres use as a template, and Bi (NO3)3.5H2O and Na2WO4.2H2O as raw material to synthesize the Bi2WO6/carbon composite by refluxing method. Finally, Bi2WO6 samples were obtained by calcination so as to remove the template. And samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection absorption spectroscopy (DRS). The Rhodamine B (RhB) was simulated as the sewage under the visible light to study the impact of the illumination time, calcination temperature and the amount of catalyst. The results show that Bi2WO6 synthesized by calcination at 500 °C had the best photocatalytic performance, and when samples (30 mg) was put into RhB solution (10 mg/L) and illumination for 180 min, the degradation rate could reach 92%, which demonstrated that the samples exhibit excellent visible photocatalytic performance.