Title :
Visible-light-induced degradation of methylene blue by mesoporous Bi2WO6 plates with worm-like structure
Author :
Jun-Qi Li ; Zhan-Yun Guo ; Hong-Guang Yu ; Hui Liu ; De-Fang Wang ; Zhen-Feng Zhu
Author_Institution :
Sch. of Mater. Sci. & Eng., Shaanxi Univ. of Sci. & Technol., Xi´an, China
fDate :
1/1/2012 12:00:00 AM
Abstract :
Mesoporous Bi2WO6 plates with worm-like structure have been successfully synthesised by hydrothermal process. The obtained Bi2WO6 plates were characterised by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller and UV-vis diffuse reflectance spectrum. The photocatalytic activity of as-synthesised Bi2WO6 plates was determined by degradation of methylene blue (MB) under visible light irradiation. The results showed that the high specific surface area, the existence of accessible mesopores channels and the quantum size effect could remarkably improve the photocatalytic activity of mesoporous Bi2WO6 plates.
Keywords :
X-ray diffraction; bismuth compounds; catalysis; materials preparation; mesoporous materials; organic compounds; photochemistry; scanning electron microscopy; size effect; transmission electron microscopy; ultraviolet spectra; visible spectra; Bi2WO6; Brunauer-Emmett-Teller diffuse reflectance spectrum; UV-vis diffuse reflectance spectrum; X-ray diffraction; accessible mesopore channels; high specific surface area; hydrothermal processing; mesoporous plates; methylene blue; photocatalytic activity; quantum size effect; scanning electron microscopy; transmission electron microscopy; visible light irradiation; visible-light-induced degradation; worm-like structure;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2011.0642
