Journal
CATALYSIS TODAY
Volume 307, Issue -, Pages 243-247Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2017.12.029
Keywords
Photochemical methanol production; Water-soluble porphyrin; Formate dehydrogenase; Aldehyde dehydrogenase; Alcohol dehydrogenase; Photoreduction of CO2
Funding
- Precursory Research for Embryonic Science and Technology (PRESTO, Japan Science and Technology Agency JST)
- Japan Society for the Promotion of Science [15K14239]
- [2406]
- Grants-in-Aid for Scientific Research [15K14239] Funding Source: KAKEN
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Photochemical and enzymatic production of methanol from CO2 was investigated with the system formate (FDH), aldehyde (AldDH) and alcohol (ADH) dehydrogenases, and methylviologen (MV2+) photoreduction by the visible light photosensitization of organo-photocatalyst, water-soluble porphyrin, tetraphenylporphyrin tetrasulfonate (H2TPPS) in the presence of triethanolamine (TEOA) as an electron donating reagent. To improve the methanol production from CO2, the kinetic parameters for methanol production with ADH and dithionite-reduced MV2+ were clarified. When the sample solution consisting of H2TPPS (100 mu M), MV2+ (2.0 mM), TEOA (0.3 M), FDH (2.0 mu M), AldDH (2.0 mu M) and ADH (2.0 mu M) in CO2 saturated 50 mM sodium pyrophosphate buffer was irradiated, continuous methanol production from CO2 was observed and methanol concentration produced was estimated to be 6.8 mu M after 100 min irradiation.
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