Room temperature synthesis of Bi4O5I2 and Bi5O7I ultrathin nanosheets with a high visible light photocatalytic performance

被引：96
|
作者：
Liu, Chao [1 ]
Wang, Xiao-Jing [2 ]
机构：
[1] Shijiazhuang Univ Econ, Coll Gemmol & Mat Tech, Shijiazhuang 050031, Peoples R China
[2] Hebei Univ Sci & Technol, Coll Sci, Shijiazhuang 050018, Peoples R China
来源：
DALTON TRANSACTIONS | 2016年 / 45卷 / 18期
基金：
中国国家自然科学基金;
关键词：
BIOX X; RESPONSIVE PHOTOCATALYSTS; BR; REMOVAL; CL; MECHANISM; AIR; NO;
D O I：
10.1039/c6dt00530f
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Bi4O5I2 and Bi5O7I ultrathin nanosheets are prepared via a facile route at room temperature. The composition, morphology, energy bands and photocatalytic properties of the materials are investigated systematically using different characterization techniques. The results reveal that Bi4O5I2 and Bi5O7I can be easily obtained by adjusting the OH- concentration at different pH values. Both Bi4O5I2 and Bi5O7I have the morphology of ultrathin nanosheets and a high surface area. With the increase of the Bi content, the adsorption edge of the samples shifts towards a shorter wavelength and the valence band edge potential becomes more positive. Thus, they exhibit a superior photocatalytic efficiency for the degradation of phenol under visible light irradiation compared to BiOI.
引用
收藏
页码：7720 / 7727
页数：8
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