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

Amao, Yutaka; Watanabe, Tomoe

doi:10.1016/j.apcatb.2008.08.008

Cited by 41 publications

(20 citation statements)

References 21 publications

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“…Water was purified with a Milli-Q system (Millipore, Bedford, MA, USA). Synthesis of Zn(TPPS) 4À was performed according to a procedure described by Amao et al, 25 see ESI † for more details. Hydrogen evolution reactions were performed in rectangular 1 cm quartz cuvettes with gas tight septum, filled with 3 mL of reaction solution and leaving a headspace of 1.35 mL.…”

Section: Methodsmentioning

confidence: 99%

Evidence for photosensitised hydrogen production from water in the absence of precious metals, redox-mediators and co-catalysts

Salzl

Ertl

Knör

2017

Phys. Chem. Chem. Phys.

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The water-soluble zinc porphyrin complex Zn(TPPS) with TPPS = tetrakis-(4-sulfonatophenyl)porphyrin surprisingly was found to produce significant amounts of hydrogen from aqueous sulfite or amine solutions under visible-light exposure without requiring any other components such as electron relays or additional proton reduction catalysts. Although the production rates and total amounts of chemically stored fuel obtained under these conditions are still much too low to be relevant for practical applications, the background of this unprecedented observation was further studied in its own right. Since the central metal zinc is unlikely to be involved in proton-coupled electron transfer steps upon long-wavelength irradiation and the process does not seem to be much affected by variations of the electron donor added, the mechanism of photocatalytic H release is suggested to involve previously neglected redox features of the in situ generated hydroporphyrin ligand system in aqueous solution.

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Section: Methodsmentioning

confidence: 99%

Evidence for photosensitised hydrogen production from water in the absence of precious metals, redox-mediators and co-catalysts

Salzl

Ertl

Knör

2017

Phys. Chem. Chem. Phys.

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“…[102,103] When a sample solution containing TEOA (0.3 m), ZnTPPS (0.1 mm), MV 2 + (0.1 mm), FDH (12.5 units), AldDH (12.5 units), ADH (12.5 units), and NaHCO 3 (100 mm) was irradiated, 4.5 mm of methanol was produced during a 3 h period. [102,103] When a sample solution containing TEOA (0.3 m), ZnTPPS (0.1 mm), MV 2 + (0.1 mm), FDH (12.5 units), AldDH (12.5 units), ADH (12.5 units), and NaHCO 3 (100 mm) was irradiated, 4.5 mm of methanol was produced during a 3 h period.…”

Section: Catalytic Methanol Synthesismentioning

confidence: 99%

“…A system for visible-light-induced methanol synthesis from the photoreduction of HCO 3 À by using FDH, AldDH, ADH, and MV 2 + through the visible-light induced photosensitization of ZnTPPS in the presence of TEOA as an electron donor in an aqueous medium has been reported (Scheme 18). [102,103] When a sample solution containing TEOA (0.3 m), ZnTPPS (0.1 mm), MV 2 + (0.1 mm), FDH (12.5 units), AldDH (12.5 units), ADH (12.5 units), and NaHCO 3 (100 mm) was irradiated, 4.5 mm of methanol was produced during a 3 h period. The conversion yield of HCO 3 À to methanol is estimated to be 4.5 % after 3 h irradiation (with the initial concentration of HCO 3 À as 100 mm).…”

Section: Catalytic Methanol Synthesismentioning

confidence: 99%

Solar Fuel Production Based on the Artificial Photosynthesis System

Amao¹

2011

ChemCatChem

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111

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ChemCatChem 2011, 3, 458 -474 through water photolysis and those that produce methanol by CO 2 reduction with the aid of an artificial photosynthesis system. As hydrogen and methanol are low-carbon fuels (the emission of CO 2 from the combustion of these fuels is low), they are considered to be alternatives to fossil resources. In this review, solar fuel production systems consisting of an artificial photosynthesis system, a catalyst, and an enzyme are discussed. These systems are expected to help in reducing CO 2 and to promote the use of low-carbon fuels in the future. Scheme 1. Z Scheme of the natural photosynthesis of higher green plants and oxygenic photosynthetic cyanobacteria.[a] Dr.Scheme 2. Solar hydrogen production or CO 2 photoreduction to low carbon fuels, such as formic acid and methanol by using PSI and PSII in the presence of suitable catalyst.Scheme 3. Artificial photosynthesis system for solar hydrogen production or CO 2 photoreduction to low carbon fuels, such as formic acid and methanol.Scheme 4. Artificial photosynthesis system with visible light irradiation consisting of an electron donor (ED), a photosensitizer (S1), and an electron relay (EC1). 460 www.chemcatchem.org

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“…For visible light-induced hydrogen production systems, platinum nano-particle or enzyme hydrogenase has been used as hydrogen producing catalyst with the visible light sensitizers such as water soluble zinc porphyrins, ruthenium polypyridyl coordination complexes and chlorophyll-a [6][7][8][9][10][11][12][13][14][15][16][17][18]. The visible light induced chemical and enzymatic synthesis of organic compounds has also been developed using this system in the presence of various dehydrogenases such as lactate (LDH), formate (FDH), aldehyde (AldDH) and alcohol dehydrogenase (ADH) for the synthesis of valuable organic compounds such as lactic acid [19], formic acid [20][21][22][23][24][25][26][27][28], methanol [29][30] etc. Among these dehydrogenases, FDH catalyzes the conversion of CO 2 to formic acid in the presence of a suitable electron donating molecules as a coenzyme such as NADH, reduced form of bipyridinium salts and so on.…”

Section: Introductionmentioning

confidence: 99%

Effect of chemical structure of bipyridinium salts as electron carrier on the visible-light induced conversion of CO2 to formic acid with the system consisting of water-soluble zinc porphyrin and formate dehydrogenase

Amao

Abe

Shiotani

2015

Journal of Photochemistry and Photobiology A: Chemistry

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A B S T R A C TEffect of chemical structures of some 2,2 0 -bipyridinium salts (BP 2+ ) as the electron carrier molecules on the visible-light induced conversion of CO 2 to formic acid with the system consisting of water-soluble zinc tetraphneylporphyrin tetrasulfonate (ZnTPPS) and formate dehydrogenase (FDH) in the presence of triethanolamine (TEOA) as an electron donor molecule was investigated. Irradiation of a CO 2 saturated solution containing TEOA, ZnTPPS, BP 2+ and FDH with visible light resulted in production of formic acid. By using 1,1 0 -ethylene-2,2 0 -bipyridinium dibromide (DB 2+ ) as an electron carrier molecule, the effective formic acid production was observed compared with the other 2,2 0 -bipyridinium salt derivatives.

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

Cited by 41 publications

References 21 publications

Evidence for photosensitised hydrogen production from water in the absence of precious metals, redox-mediators and co-catalysts

Evidence for photosensitised hydrogen production from water in the absence of precious metals, redox-mediators and co-catalysts

Solar Fuel Production Based on the Artificial Photosynthesis System

Effect of chemical structure of bipyridinium salts as electron carrier on the visible-light induced conversion of CO2 to formic acid with the system consisting of water-soluble zinc porphyrin and formate dehydrogenase

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