期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 211, 期 -, 页码 90-94出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2013.12.002
关键词
Titanium dioxide; Strings of hierarchical spheres; TiO2 nanosheets; Photocatalytic
资金
- National Natural Science Foundation of China [91333122, 51372082, 51172069]
- Ph.D. Programs Foundation of Ministry of Education of China [20130036110012, 20110036110006]
- Fundamental Research Funds for the Central Universities (Key project) [11ZG02]
A novel hierarchical titanium dioxide (TiO2) composite nanostructure with strings of anatase TiO2 hierarchical micro-spheres and rutile nanobelts framework (TiO2 HSN) is successfully synthesized via a one-step hydrothermal method. Particularly, the strings of hierarchical spheres are assembled by very thin TiO2 nanosheets, which are composed of highly crystallized anatase nanocrystals. Meanwhile, the HSN has a large surface area of 191 m(2)/g, which is about 3 times larger than Degussa P25. More importantly, the photocatalytic activity of HSN and P25 were evaluated by the photocatalytic oxidation decomposition of methyl orange (MO) under UV light illumination, and the TiO2 HSN shows enhanced photocatalytic activity compared with Degussa P25, as result of its continuous hierarchical structures, special conductive channel and large specific surface area. With these features, the hierarchical TiO2 may have more potential applications in the fields of dye-sensitized solar cells and lithium ion batteries. (C) 2013 Elsevier Inc. All rights reserved.
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