期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 116, 期 1-3, 页码 710-714出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2008.05.024
关键词
TiO2; Hierarchical structure; Photocatalytic; Composite channel
类别
资金
- Japanese Ministry of Education, Culture, Sports, Science and Technology
- National Natural Science Foundation of China [20573120, 20773142, 50533030]
- National Research Fund for Fundamental Key Projects [2006CB806200, 2006CB932100, 2007CB936403]
- 863 project [2007AA032348]
Particles-stabilized TiO2 icecream-like foam was prepared by a versatile mechanical stirring method. It showed ultrastable state in air for several days. After calcining the wet foam, an open honeycomb-like structure with macro-/meso-porosity was formed. The photocatalytic characters of as-prepared macro-/meso-porous materials were detected, and the results indicated that the catalytic activity is increased about 120% compared to that of nanoparticles with acetaldehyde as a probe. Composite porous structure provided open pathways for high accessibility of molecular transport, increased surface area for more active center, and enhanced light-collection efficiency due to the inner light scattering effect, resulting in better photocatalytic activity. (C) 2008 Elsevier Inc. All rights reserved.
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