Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 4, Issue 7, Pages 2393-2399Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ee00780c
Keywords
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Funding
- UK research councils BBSRC
- EPRSC [BB/D52222X, BB/H003878/1, Supergen 5]
- NIH [GM39451]
- Biotechnology and Biological Sciences Research Council [BB/H003878/1] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/H019480/1] Funding Source: researchfish
- BBSRC [BB/H003878/1] Funding Source: UKRI
- EPSRC [EP/H019480/1] Funding Source: UKRI
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A model system for photoreduction of CO2 to CO using visible light has been extensively studied, using a catalyst for which the CO2/CO reaction is electrochemically reversible. The hybrid system comprises metal oxide nanoparticles functionalised with the enzyme carbon monoxide dehydrogenase (CODH), and sensitised to visible light using a ruthenium bipyridyl photosensitiser. An anatase/rutile TiO2 mixture (Evonik Degussa P25) was selected as the most suitable semiconductor, and CO production rates and stability were examined as a function of each component (photosensitiser, enzyme and TiO2). Tolerance to O-2 and effects of different electron donors were also investigated, together with strategies to control enzyme binding at the surface of TiO2 in order to enhance overall activity.
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