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Nanotechnology: Cleaning Windows: TiO2 for Visible-Light Photodegradation of Pollutant
Highlights
February 12, 2008 - Read the Federal Register notice about EPA's Nanotechnology Research Strategy and meeting to review public comment:
- FR Notice Requesting Public comment on EPA's Nanotechnology Research Strategy and comment review meeting (PDF) (3 pp, 53 K)
- EPA's draft Nanotechnology Research Strategy (PDF) (76 pp, 1.10 MB)
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Nanotechnology Search
I will discuss the synthesis and characterizations of doped and undoped nanostructured TiO2. TiO2 is a much studied material for photocatalysis applications. Its large band gap makes it sensitive only to UV radiations. For much desired activation in the visible range, the band gap has to be tailored. Various schemes to accomplish visible light photocatalysis will be described along with the general synthesis issues, characterizations, and applications. One of the most exciting recent discovery is the effect of N doping on TiO2 to improve the optical reactivity of TiO2 in the visible region. I will describe new photocatalysis results with N-doped TiO2.