2022 Fiscal Year Annual Research Report
Bio-abiotic hybrid system for light-driven carbon dioxide conversion to produce ethanol
| Project/Area Number |
21K20485
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| Research Institution | Nagoya University |
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Principal Investigator |
王 謙 名古屋大学, 工学研究科, 准教授 (20914162)
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| Project Period (FY) |
2021-08-30 – 2023-03-31
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| Keywords | Photocatalysis |
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| Outline of Annual Research Achievements |
Although particulate photocatalysts and bias-free photoelectrochemical cells have been able to convert CO2 into chemical fuels using light, H2O, and CO2 as the sole reagents, they have mostly produced mono-carbon compounds such as carbon monoxide, methane, and formate.Multi-carbon liquid products, such as ethanol and acetic acid, are critically important for their stability and high energy density and directly serving as feedstocks for the synthesis of long-chain hydrocarbon fuels and oxygenates. Previous reports have shown the feasibility of selectively formation of multicarbon products from CO2 via electrochemical processes that require electricity input, but few studies have established solar-driven processes. This project proposes bio-abiotic hybrid systems that use CO2-fixing bacteria as the catalysts for the CO2 reduction reaction and semiconductors as light absorbers. Non-photosynthetic CO2-fixing bacteria are favored because they can facilitate the multistep process of CO2 reduction selectively and efficiently. The proof-of-concept bio-abiotic hybrid systems interface non-photosynthetic bacteria, shch as S. ovata and C. ljungdahlii, with the photocatalyst sheet consisting of La- and Rh-codoped SrTiO3 and BiVO4 semiconductor powders fixed into a three-dimensional inverse opal-indium tin oxide layer. These systems successfully produced acetate and ethanol from CO2 and water.
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[Journal Article] 2D Transition Metal Dichalcogenides for Photocatalysis2023
Author(s)
Ruijie Yang, Yingying Fan, Yuefeng Zhang, Liang Mei, Rongshu Zhu, Jiaqian Qin, Jinguang Hu, Zhangxing Chen, Yun Hau Ng, Damien Voiry, Shuang Li, Qingye Lu, Qian Wang, Jimmy C Yu, Zhiyuan Zeng
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Journal Title
Angewandte Chemie International Edition
Volume: 62
Pages: e2022180
DOI
Peer Reviewed / Int'l Joint Research
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