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Photobiocatalytic H(2)evolution of GaN:ZnO and [FeFe]-hydrogenase recombinantEscherichia coli
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- Kosem, Nuttavut (författare)
- Kyushu Univ, Int Inst Carbon Neutral Energy Res I2CNER, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan.;Kyushu Univ, Dept Appl Chem, Fac Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan.
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- Honda, Yuki (författare)
- Nara Womens Univ, Fac Sci, Dept Chem Biol & Environm Sci, Kitanoyanishi Machi, Nara 6308506, Japan.
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- Watanabe, Motonori (författare)
- Kyushu Univ, Int Inst Carbon Neutral Energy Res I2CNER, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan.
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- Kyushu Univ, Int Inst Carbon Neutral Energy Res I2CNER, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan;Kyushu Univ, Dept Appl Chem, Fac Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan. Nara Womens Univ, Fac Sci, Dept Chem Biol & Environm Sci, Kitanoyanishi Machi, Nara 6308506, Japan. (creator_code:org_t)
- 2020
- 2020
- Engelska.
- Ingår i: Catalysis Science & Technology. - : Royal Society of Chemistry (RSC). - 2044-4753 .- 2044-4761. ; 10:12, s. 4042-4052
- Tidskriftsartikel (refereegranskat)
Abstract
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- The need for sustainable, renewable and low-cost approaches is a driving force behind the development of solar-to-H(2)conversion technologies. This study aims to develop a new strategy using a visible-light photocatalyst coupled to a biocatalyst for H(2)production. Photocatalytic methyl viologen (MV2+) reduction activity was investigated to discover active oxynitrides. In comparative studies with LaTiO2N, BaTaO2N and Ta3N5, it was revealed that the suitable surface area, band gap and band edge potentials are some physical factors that are responsible for the photocatalytic behaviors of GaN:ZnO in MV(2+)reduction. The activity is enhanced at higher concentrations and the alkaline pH of triethanolamine (TEOA). The expression of an active [FeFe]-hydrogenase fromEscherichia coli(Hyd(+)E. coli) as a recombinant biocatalyst was confirmed by its MV & x2d9;(+)-dependent H(2)production activity. In the photobiocatalytic system of GaN:ZnO and Hyd(+)E. coli, the rate of H(2)production reached the maximum level in the presence of MV(2+)as an electron mediator at neutral pH as a biocompatible condition. The present work reveals a novel hybrid system for H(2)production using visible-light active GaN:ZnO coupled to Hyd(+)E. coli, which shows the feasibility of being developed for photobiocatalytic H(2)evolution under solar light.
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- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
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