期刊
CHEMICAL ENGINEERING JOURNAL
卷 160, 期 1, 页码 370-377出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2010.03.011
关键词
Meso-/macroporous; Carbon-modified; Titania; Solar photocatalysis
资金
- National Natural Science Foundation of China [20803017, 20973096]
- National Basic Research Program of China [2009CB623502]
- Specialized Research Fund for the Doctoral Program of Higher Education [20070055014]
- Natural Science Foundation of Tianjin [08JCZDJC21500]
- Program for New Century Excellent Talents in University [NCET-06-0215]
- Nankai University
Carbon-modified TiO2 photocatalysts with a hierarchical meso-/macroporous structure were prepared through direct hydrolyzation of n-tetrabutyl titanate in the dodecylamine solution and subsequent calcination under nitrogen atmosphere. The resulting photocatalysts were characterized by X-ray diffraction, scanning and transmission electron microscopy, nitrogen sorption analysis, X-ray photoelectron spectroscopy, and UV-vis spectroscopy. A well-defined hierarchical macrochannel-like structure of mesoporous nanoparticle assembly with a predominant anatase phase was observed in the synthesized carbon-modified titania materials, exhibiting obviously high absorption in the wavelength range of 400-800 nm. It is revealed that carbon could not only substitute partly Ti in the form of Ti-O-C bond but also substitute 0 in the form of O-Ti-C, besides amorphous interstitial carbon atoms were synchronously introduced, benefitting the improvement of solar light photocatalytic activity. The synthesized hierarchical carbon-modified titanias materials exhibited excellent photocatalytic performance in the photodegradation of Rhodamine B dye, suggesting their promising potential as effective solar photocatalysts for organic waste degradation. (C) 2010 Elsevier B.V. All rights reserved.
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