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NASA NTRS · 20150016089

Visible-Light-Responsive Catalyst Development for Volatile Organic Carbon Remediation Project

Zeitlin, Nancy·Hintze, Paul E.·Coutts, Janelle
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Abstract

Photocatalysis is a process in which light energy is used to 'activate' oxidation/reduction reactions. Unmodified titanium dioxide (TiO2), a common photocatalyst, requires high-energy UV light for activation due to its large band gap (3.2 eV). Modification of TiO2 can reduce this band gap, leading to visible-light-responsive (VLR) photocatalysts. These catalysts can utilize solar and/or visible wavelength LED lamps as an activation source, replacing mercury-containing UV lamps, to create a "greener," more energy-efficient means for air and water revitalization. Recently, KSC developed several VLR catalysts that, on preliminary evaluation, possessed high catalytic activity within the visible spectrum; these samples out-performed existing commercial VLR catalysts.

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Zeitlin, Nancy, Hintze, Paul E., Coutts, Janelle. 2015-08-15. Visible-Light-Responsive Catalyst Development for Volatile Organic Carbon Remediation Project. https://ntrs.nasa.gov/citations/20150016089

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