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Photochemical and enzymatic methanol synthesis from HCO3− by dehydrogenases using water-soluble zinc porphyrin in aqueous media

Paper ID Volume ID Publish Year Pages File Format Full-Text
47869 46484 2009 5 PDF Available
Title
Photochemical and enzymatic methanol synthesis from HCO3− by dehydrogenases using water-soluble zinc porphyrin in aqueous media
Abstract

We studied the photochemical and enzymatic synthesis of methanol from HCO3− using formate dehydrogenase (FDH) isolated from Candida boidinii, aldehyde dehydrogenase (AldDH) and alcohol dehydrogenase (ADH) isolated from yeast, and the photoreduction of methyl viologen (MV2+) by the visible-light sensitization using zinc tetraphenylporphyrin tetrasulfonate (ZnTPPS) in the presence of triethanolamine (TEOA). When a sample solution containing ZnTPPS, MV2+, FDH, AldDH, ADH, TEOA, and NaHCO3 in potassium phosphate buffer solution (pH 8) was irradiated, the amount of methanol produced increased with the irradiation time. After irradiation for 3 h, 4.5 μmol dm−3 of methanol was produced from 100 μmol dm−3 NaHCO3. The conversion ratio of HCO3− to methanol was approximately 4.5%. This result indicates that a system for the photochemical synthesis of methanol from HCO3− can be developed by using three dehydrogenases (FDH, AldDH, and ADH) and for the photoreduction of MV2+ through the photosensitization of ZnTPPS in aqueous media.

Keywords
CO2 fixation; Methanol synthesis; Artificial photosynthesis; Biocatalysis; Photochemical reaction
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Photochemical and enzymatic methanol synthesis from HCO3− by dehydrogenases using water-soluble zinc porphyrin in aqueous media
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 86, Issues 3–4, 23 February 2009, Pages 109–113
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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