Stepwise blossoming of BiOBr nanoplate-assembled microflowers and their visible-light photocatalytic activities

被引：73

作者：

Chen, Yijun ^{[1
]}

Wen, Ming ^{[1
]}

Wu, Qingsheng ^{[1
]}

机构：

[1] Tongji Univ, Dept Chem, Shanghai 200092, Peoples R China

来源：

CRYSTENGCOMM | 2011年 / 13卷 / 08期

关键词：

ELECTRONIC-STRUCTURES; BR; CL; BIOCL; BI; NANOSTRUCTURES; MICROSPHERES; NANOTUBES; NANORODS; GROWTH;

D O I：

10.1039/c0ce00955e

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Stepwise blossoming of nanoplate-assembled BiOBr microflowers from bud to blossom structures with average diameters from 1 to 3.5 mu m and nanoplate thicknesses from 25 to 120 nm is obtained in a solvothermal system through surfactant modulation and time control. The above BiOBr structures exhibit excellent visible-light photocatalytic activity toward degradation of methylene blue (MB) solution, among which the structure from a 24 h reaction gives the best photocatalytic activity. A quantitative relationship is established among crystallite size (R), specific surface area (S) and photocatalytic activity (D). The equation D = 15(R)(2/5)(S)(1/5) offers a quantitative characterization of crystallinity-dominated photocatalytic activity.

引用

收藏

页码：3035 / 3039

页数：5

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