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Highly Efficient Nitrogen-Fixing Microbial Hydrogel Device for Sustainable Solar Hydrogen Production

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Title
Highly Efficient Nitrogen-Fixing Microbial Hydrogel Device for Sustainable Solar Hydrogen Production
Author(s)
Wang Hee Lee; Yoon, Chang-Kyu; Hyunseo Park; Park, Ga-Hee; Jeong, Jae Hwan; Gi Doo Cha; Byoung-Hoon Lee; Lee, Juri; Chan Woo Lee; Megalamane S. Bootharaju; Sung-Hyuk Sunwoo; Jaeyune Ryu; Lee, Changha; Cho, Yong-Joon; Nam, Tae-Wook; Ahn, Kyung Hyun; Taeghwan Hyeon; Seok, Yeong-Jae; Dae-Hyeong Kim
Publication Date
2023-12
Journal
ADVANCED MATERIALS, v.35, no.52
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Conversion of sunlight and organic carbon substrates to sustainable energy sources through microbial metabolism has great potential for the renewable energy industry. Despite recent progress in microbial photosynthesis, the development of microbial platforms that warrant efficient and scalable fuel production remains in its infancy. Efficient transfer and retrieval of gaseous reactants and products to and from microbes are particular hurdles. Here, inspired by water lily leaves floating on water, a microbial device designed to operate at the air-water interface and facilitate concomitant supply of gaseous reactants, smooth capture of gaseous products, and efficient sunlight delivery is presented. The floatable device carrying Rhodopseudomonas parapalustris, of which nitrogen fixation activity is first determined through this study, exhibits a hydrogen production rate of 104 mmol h-1 m-2, which is 53 times higher than that of a conventional device placed at a depth of 2 cm in the medium. Furthermore, a scaled-up device with an area of 144 cm2 generates hydrogen at a high rate of 1.52 L h-1 m-2. Efficient nitrogen fixation and hydrogen generation, low fabrication cost, and mechanical durability corroborate the potential of the floatable microbial device toward practical and sustainable solar energy conversion. A microbial device, designed to operate at the air-water interface, facilitates concomitant supply of gaseous reactants, smooth capture of gaseous products, and efficient sunlight delivery. Efficient nitrogen fixation and hydrogen generation, low fabrication cost, and mechanical durability corroborate the potential of the floatable microbial device toward practical and sustainable solar energy conversion.image
URI
https://pr.ibs.re.kr/handle/8788114/14516
DOI
10.1002/adma.202306092
ISSN
0935-9648
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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