3D hierarchical anatase TiO2 superstructures constructed by "nanobricks" built nanosheets with exposed {001} facets: facile synthesis, formation mechanism and superior photocatalytic activity

被引：21
作者：
Li, Guoliang [1 ]
Liu, Jiyan [2 ]
Lan, Jing [3 ]
Li, Gang [2 ]
Chen, Qiuwen [1 ]
Jiang, Guibin [2 ]
机构：
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
[3] Qingdao Agr Univ, Coll Chem & Pharmaceut Sci, Qingdao 266109, Peoples R China
来源：
CRYSTENGCOMM | 2014年 / 16卷 / 46期
关键词：
NANOSTRUCTURED TIO2; LARGE-SCALE; MESOCRYSTALS;
D O I：
10.1039/c4ce01295j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Exploring anatase TiO2 with a superior photocatalytic activity is worthwhile as well as challenging. 3D hierarchical anatase TiO2 with a high percentage of exposed {001} facets has been successfully synthesized through a simple one-pot solvothermal strategy in the presence of ammonium fluoride and ethylene glycol solution. It was found that both NH4F and ethylene glycol played an essential role in directing a 3D hierarchical structure with exposed {001} facets. Characterization by SEM, TEM, XRD, and TG endorsed a plausible proposed formation mechanism of "nucleation-aggregation-recrystallization". The product was proven to exhibit superior photocatalytic activity under the synergistic effect of improved light-harvesting ability and higher reactivity of exposed {001} facets.
引用
收藏
页码：10547 / 10552
页数：6
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