Title :
Surfactant-free hydrothermal synthesis of flower-like Bi2WO6 with enhanced solar-light-induced photocatalytic performance
Author :
Wang, Xiongfei ; Chang, Ly-Yu ; Wang, Jiacheng ; Song, Nannan ; Liu, Hongying ; Wan, Xiaohua
Author_Institution :
Coll. of Chem. & Chem. Eng., Henan Normal Univ., Xinxiang, China
fDate :
11/1/2012 12:00:00 AM
Abstract :
Bi2WO6 with a flower-like structure was successfully synthesised by a simple surfactant-free hydrothermal method. The flower-like structures were composed of many interweaved nanosheets to form an open porous structure. The BET results showed that flower-like Bi2WO6 had a large surface area with 17.8 m2/g, which was 28 times higher than the Bi2WO6 prepared by a solid state reaction (SSR-Bi2WO6). A possible formation mechanism of the flower-like Bi2WO6 is proposed. Owing to the higher surface area, porous structure and high surface-to-volume ratios, the flower-like Bi2WO6 exhibited better photocatalytic activity than the SSR-Bi2WO6 for the degradation of Rhodamine B.
Keywords :
absorption coefficients; bismuth compounds; catalysis; crystal growth from solution; organic compounds; porous materials; ultraviolet spectra; visible spectra; Bi2WO6; enhanced solar-light-induced photocatalytic performance; flower-like structure; formation mechanism; high surface area; high surface-volume ratios; interweaved nanosheets; large surface area; open porous structure; photocatalytic activity; rhodamine B degradation; simple surfactant-free hydrothermal method; solid state reaction;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2012.0723
