Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 31, Issue 5, Pages 1275-1279Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2010.31.5.1275
Keywords
Titanium dioxide; Photocatalyst; Surface modification; Triethoxysilane; Characterization
Categories
Funding
- Korean Government
- Keimyung University
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We have carried out the surface modification of photocatalytic TiO2 with triethoxysilane through dehydrogenation reaction and characterized the modified photocatalyst by spectroscopic methods, such as FT-IR, solid-state Si-29 MAS NMR, XPS, and XRF, etc. We also examined photocatalytic activity of the immobilized photocatalytic titanium dioxide with triethoxysilane by decolorization reaction of dyes such as cong red and methylene blue under visible light. Dispersion test showed that the photocatalytic titanium dioxide immobilized with triethoxysilane group has kept higher dispersibility than titanium dioxide itself No appreciable precipitation takes place even after standing for 24 h in the 4:6 mixture ratio of ethanol and water.
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