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
相关论文
共 32 条
[21]   3D hierarchical flower-like TiO2 nanostructure: morphology control and its photocatalytic property [J].
Tian, Guohui ;
Chen, Yajie ;
Zhou, Wei ;
Pan, Kai ;
Tian, Chungui ;
Huang, Xu-ri ;
Fu, Honggang .
CRYSTENGCOMM, 2011, 13 (08) :2994-3000
[22]   Anatase TiO2 hollow microspheres with exposed {001} facets: Facile synthesis and enhanced photocatalysis [J].
Wang, Xiaoliang ;
He, Huanlong ;
Chen, Yan ;
Zhao, Jinqiu ;
Zhang, Xiangyi .
APPLIED SURFACE SCIENCE, 2012, 258 (15) :5863-5868
[23]   Nanostructured TiO2 for energy conversion and storage [J].
Weng, Zhengyang ;
Guo, Huan ;
Liu, Xiangmei ;
Wu, Shuilin ;
Yeung, K. W. K. ;
Chu, Paul. K. .
RSC ADVANCES, 2013, 3 (47) :24758-24775
[24]   Shape-Enhanced Photocatalytic Activity of Single-Crystalline Anatase TiO2 (101) Nanobelts [J].
Wu, Nianqiang ;
Wang, Jin ;
Tafen, De Nyago ;
Wang, Hong ;
Zheng, Jian-Guo ;
Lewis, James P. ;
Liu, Xiaogang ;
Leonard, Stephen S. ;
Manivannan, Ayyakkannu .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (19) :6679-6685
[25]   Photocatalytic Activity of Hierarchical Flower-Like TiO2 Superstructures with Dominant {001} Facets [J].
Xiang Quanjun ;
Yu Jiaguo .
CHINESE JOURNAL OF CATALYSIS, 2011, 32 (04) :525-531
[26]   Tunable photocatalytic selectivity of TiO2 films consisted of flower-like microspheres with exposed {001} facets [J].
Xiang, Quanjun ;
Yu, Jiaguo ;
Jaroniec, Mietek .
CHEMICAL COMMUNICATIONS, 2011, 47 (15) :4532-4534
[27]   Anatase TiO2 single crystals with a large percentage of reactive facets [J].
Yang, Hua Gui ;
Sun, Cheng Hua ;
Qiao, Shi Zhang ;
Zou, Jin ;
Liu, Gang ;
Smith, Sean Campbell ;
Cheng, Hui Ming ;
Lu, Gao Qing .
NATURE, 2008, 453 (7195) :638-U4
[28]   A facile synthesis of anatase TiO2 nanosheets-based hierarchical spheres with over 90% {001} facets for dye-sensitized solar cells [J].
Yang, Weiguang ;
Li, Jianming ;
Wang, Yali ;
Zhu, Feng ;
Shi, Weimin ;
Wan, Farong ;
Xu, Dongsheng .
CHEMICAL COMMUNICATIONS, 2011, 47 (06) :1809-1811
[29]   One-step and large-scale synthesis of anatase TiO2 mesocrystals along [001] orientation with enhanced photocatalytic performance [J].
Yao, Xiaxi ;
Liu, Xiaoheng ;
Liu, Tianyu ;
Wang, Kun ;
Lu, Lude .
CRYSTENGCOMM, 2013, 15 (47) :10246-10254
[30]   Effects of F- doping on the photocatalytic activity and microstructures of nanocrystalline TiO2 powders [J].
Yu, JC ;
Yu, JG ;
Ho, WK ;
Jiang, ZT ;
Zhang, LZ .
CHEMISTRY OF MATERIALS, 2002, 14 (09) :3808-3816
1234