Synthesis and Characterization of Highly Visible-light Active Monoclinic Mesoporous BiVO4

被引：7
|
作者：
Xiao Qi [1 ]
Gao Lan [1 ]
Zhang Xiang [1 ]
机构：
[1] Cent S Univ, Sch Resources Proc & Bioengn, Changsha 410083, Peoples R China
来源：
JOURNAL OF INORGANIC MATERIALS | 2011年 / 26卷 / 12期
关键词：
nanocasting; BiVO4; mesoporous; photocatalysis; MCM-48; PHOTOCATALYTIC ACTIVITY; HYDROTHERMAL METHOD; MCM-48; IRRADIATION;
D O I：
10.3724/SP.J.1077.2011.01256
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ordered nanocrystalline mesoporous BiVO4 with pure phase was successfully synthesized at 550 degrees C via nanocasting using cubic MCM-48 molecular sieves as hard template. The long-range ordered mesostructure was characterized by XRD, TEM, BET as well as UV-Vis spectrophotometer. Compared with the BiVO4 synthesized by conventional hydrothermal method, the nanocasting mesoporous BiVO4 has the average pore diameter of 16.8nm, pore volume of 0.1 cm(3)/g and specific surface area up to 22.9 m(2)/g. The structure decreases the recombination of optical excitation electrons and holes efficiently, so the mesoporous BiVO4 has an excellent photocatalytic activity in the visible light region. As a result, the photocatalytic efficiency of mesoporous BiVO4 for xanthate in 90min reaches 78%.
引用
收藏
页码：1256 / 1260
页数：5
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