Photo-Assisted Processes for Improved Catalytic Activity and Selectivity of Environmentally Harmful Emissions |
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| Authors: | Ljungström Sten Chakarov Dinko Bergeld Johan Johansson Stefan Kasemo Bengt |
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| Affiliation: | (1) Competence Centre for Catalysis and Department for Applied Physics, Chalmers University of Technology and Göteborg University, S-412 96 Göteborg, Sweden |
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| Abstract: | Photoenhanced activity of several supported noble metal/metal oxide combinations has been explored. Significant activity is observed for supported Pt and Pd samples. Specifically, the so called light-off temperatures for CO oxidation are found to decrease upon illumination. Evidence for a photocatalytic non-thermal mechanism rather than a photo-assisted thermal process is found through the wavelength dependence for CO oxidation on a Pt/alumina catalyst. The difficulty of separating real photocatalytic from other photo-assisted effects in the case of porous samples is discussed. |
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| Keywords: | CO oxidation photocatalysis suppported noble metal catalysts emission cleaning |
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