Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 19, Pages 8243-8248Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp900622k
Keywords
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Funding
- Australian Research Council (ARC)
- Inner Mongolia University [207037]
- Department of Education of Inner Mongolia Autonomous Region [NJZY07013]
- Queensland University of Technology
- Inorganic Materials Research Program
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A new composite Structure with Superior pholocatalytic activity for phenol decomposition was prepared by reaction between TiOSO4 and a synthetic layered clay laponite. The high photocatalytic activity resulted from the unique structure of the composite., in which anatase nanocrystals were attached oil leached laponite fragments. The new materials are distinctly different from the conventional TiO2-pillared days in structure. which are microporous solids with small TiO2 particles (a few nanometers in size) as pillars. The large number of the anatase crystals (the active sites) and better accessibility to the sites by UV light and reactant Molecules are the major factors enhancing the photocatalytic activity. Important structural properties of the porous composites, such as specific surface area. pore structure, and size of the anatase crystals, were tailored by modulating the Ti/clay ratio and the hydrothermal synthesis temperatures. The performance of the catalysts is related to their structural features, and it is found that tile catalytic activity increased with increasing size of the anatase crystals in the catalysts. specific Surface area, and mesopore size.
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