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Synthesis of Bi2WO6/TiO2 nanobelts for development of visible-light-driven photocatalysts and their photocatalytic properties
Received date: 2018-10-12
Online published: 2020-12-29
TiO2 P25 nanoparticles were used as raw materials to synthesise TiO2 nanobelts by the alkaline hydrothermal method. The Bi2WO6/TiO2 nanobelts were successfully synthesised by the hydrothermal method using the TiO2 nanobelts. X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques were used to study the morphology and structure of the synthesised hybrid material. The experimental results revealed that the Bi2WO6 nanosheets could be successfully loaded onto the surface of the TiO2 nanobelts (attachment via intermolecular interactions). The photocatalytic performance of the Bi2WO6/TiO2 composite material and the mechanism of catalysis were investigated under visible light irradiation. The results showed that the prepared Bi2WO6/TiO2 hybrid material had excellent photocatalytic properties. The enhanced photocatalytic activity could be attributed to the excellent photogenerated electron-hole pair separation (effective charge separation) and specificity of the composite material. The effective charge separation not only generated abundant active sites for photocatalytic reactions but also effectively promoted the axial mobility of electrons.
TANG Yan, ZHOU Diwen, ZHU Ying, QIAO Dandan, PU Xianjuan, JIAO Zheng, CHENG Lingli . Synthesis of Bi2WO6/TiO2 nanobelts for development of visible-light-driven photocatalysts and their photocatalytic properties[J]. Journal of Shanghai University, 2020 , 26(6) : 954 -962 . DOI: 10.12066/j.issn.1007-2861.2103
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