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


Ultrafast fabrication of highly active BiVO4 photoanodes by hybrid microwave annealing for unbiased solar water splitting

DC Field Value Language Kim, Jin Hyun ko Jo, Yim Hyun ko Kim, Ju Hun ko Lee, Jae Sung ko 2016-11-23T08:21:45Z - 2016-11-18 ko 2016-10 ko
dc.identifier.citation NANOSCALE, v.8, no.40, pp.17623 - 17631 ko
dc.identifier.issn 2040-3364 ko
dc.identifier.uri -
dc.description.abstract Hybrid microwave annealing (HMA) with a silicon susceptor in a household microwave oven produces BiVO4-based photoanodes of much improved performance in photoelectrochemical water oxidation in only 6 min relative to conventional thermal annealing in a traditional muffle furnace (FA) that needs a much longer time, 300 min. This technique can apply equally effectively to bare as well as modified BiVO4 by Mo-doping, heterojunction formation with WO3, and an oxygen evolution co-catalyst. Relative to FA, HMA forms BiVO4 films of smaller feature sizes, higher porosity, and increased three dimensional roughness, which decrease the diffusion distance of holes to the surface and thereby increase mainly the bulk charge separation efficiency (eta(bulk)) of the photoanodes. Thus, the HMA-treated BiVO4/WO3 film achieves the state-of-the art eta(bulk) of similar to 90% for water oxidation. Combination of a photoanode of NiOOH/FeOOH/BiVO4/WO3 (HMA, 6 min) with a 2p c-Si solar cell allows a solar to hydrogen conversion efficiency of similar to 5.0% in unbiased overall water splitting, which is also comparable to the state-of-the-art for a similar material combination. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher ROYAL SOC CHEMISTRY ko
dc.title Ultrafast fabrication of highly active BiVO4 photoanodes by hybrid microwave annealing for unbiased solar water splitting ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84991585342 ko
dc.identifier.wosid 000386244400029 ko
dc.type.rims ART ko
dc.identifier.doi 10.1039/c6nr05445e ko
dc.identifier.url!divAbstract ko
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