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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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ZnFe2O4 Dendrite/SnO2 Helix 3D Hetero-Structure Photoanodes for Enhanced Photoelectrochemical Water Splitting: Triple Functions of SnO2 Nanohelix

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dc.contributor.author Kim, Jeong Hun ko
dc.contributor.author Choi, Il Yong ko
dc.contributor.author Kim, Jin Hyun ko
dc.contributor.author Kim, Jaerim ko
dc.contributor.author Kim, Young Kyeong ko
dc.contributor.author Kim, Jong Kyu ko
dc.contributor.author Lee, Jae Sung ko
dc.date.available 2021-10-14T08:22:40Z -
dc.date.created 2021-10-07 ko
dc.date.issued 2021-11 ko
dc.identifier.citation SMALL, v.17, no.47, pp.2103861 ko
dc.identifier.issn 1613-6810 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/54134 -
dc.description.abstract An array of SnO2 nanohelix structures is employed to fabricate a SnO2 helix@ZnFe2O4 dendrite core-shell 3D heterostructure photoanode for photoelectrochemical (PEC) water splitting. The SnO2 helix provides triple critical functions to enhance the PEC performance of the photoanode. First, it scatters the incident light to achieve a higher light harvesting efficiency. Second, it provides a facile electron pathway as an electron transfer layer (ETL) while blocking hole transport to mitigate charge recombination in the bulk of ZnFe2O4. Finally, it becomes a template for the formation of ZnFe2O4 dendrite nanostructure shell. The ZnFe2O4 dendrite/SnO2 helix photoanode exhibits a remarkable increase in incident photon-to-electron conversion efficiency compared to unmodified ZnFe2O4 with no ETL and modified one with "flat" SnO2 ETL. The surface of the ZnFe2O4/SnO2 helix photoanode is further modified with TiO2 passivation layer and NiFeOx oxygen evolution co-catalyst to achieve one of the best PEC performances among reported ZnFe2O4-based photoanodes. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title ZnFe2O4 Dendrite/SnO2 Helix 3D Hetero-Structure Photoanodes for Enhanced Photoelectrochemical Water Splitting: Triple Functions of SnO2 Nanohelix ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85115339746 ko
dc.identifier.wosid 000697888600001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/smll.202103861 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/smll.202103861 ko
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