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dc.contributor.authorTian, Yi
dc.contributor.authorGarcía de Arquer, Francisco Pelayo
dc.contributor.authorDinh, Cao-Thang
dc.contributor.authorFavraud, Gael
dc.contributor.authorBonifazi, Marcella
dc.contributor.authorLi, Jun
dc.contributor.authorLiu, Min
dc.contributor.authorZhang, Xixiang
dc.contributor.authorZheng, Xueli
dc.contributor.authorKibria, Md. Golam
dc.contributor.authorHoogland, Sjoerd
dc.contributor.authorSinton, David
dc.contributor.authorSargent, Edward H.
dc.contributor.authorFratalocchi, Andrea
dc.date.accessioned2017-05-14T12:03:57Z
dc.date.available2017-05-14T12:03:57Z
dc.date.issued2017-05-08
dc.identifier.citationTian Y, García de Arquer FP, Dinh C-T, Favraud G, Bonifazi M, et al. (2017) Enhanced Solar-to-Hydrogen Generation with Broadband Epsilon-Near-Zero Nanostructured Photocatalysts. Advanced Materials: 1701165. Available: http://dx.doi.org/10.1002/adma.201701165.
dc.identifier.issn0935-9648
dc.identifier.pmid28481018
dc.identifier.doi10.1002/adma.201701165
dc.identifier.urihttp://hdl.handle.net/10754/623488
dc.description.abstractThe direct conversion of solar energy into fuels or feedstock is an attractive approach to address increasing demand of renewable energy sources. Photocatalytic systems relying on the direct photoexcitation of metals have been explored to this end, a strategy that exploits the decay of plasmonic resonances into hot carriers. An efficient hot carrier generation and collection requires, ideally, their generation to be enclosed within few tens of nanometers at the metal interface, but it is challenging to achieve this across the broadband solar spectrum. Here the authors demonstrate a new photocatalyst for hydrogen evolution based on metal epsilon-near-zero metamaterials. The authors have designed these to achieve broadband strong light confinement at the metal interface across the entire solar spectrum. Using electron energy loss spectroscopy, the authors prove that hot carriers are generated in a broadband fashion within 10 nm in this system. The resulting photocatalyst achieves a hydrogen production rate of 9.5 µmol h-1 cm-2 that exceeds, by a factor of 3.2, that of the best previously reported plasmonic-based photocatalysts for the dissociation of H2 with 50 h stable operation.
dc.description.sponsorshipY.T. and F.P.G.d.A. contributed equally to this work. For the computer time, the authors used the resources of the KAUST Supercomputing Laboratory and the Redragon cluster of the Primalight group. This work was supported by KAUST (Award No. OSR-2016-CRG5-2995), the Ontario Research Fund-Research Excellence Program, the Natural Sciences and Engineering Research Council (NSERC) of Canada, and the Connaught Global Challenges program of the University of Toronto.
dc.publisherWiley-Blackwell
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/adma.201701165/full
dc.subjectArtificial Photosynthesis
dc.subjectHot Electron Generation
dc.subjectHydrogen Generation, Photocatalysts
dc.titleEnhanced Solar-to-Hydrogen Generation with Broadband Epsilon-Near-Zero Nanostructured Photocatalysts
dc.typeArticle
dc.contributor.departmentApplied Mathematics and Computational Science Program
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPRIMALIGHT Research Group
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalAdvanced Materials
dc.contributor.institutionDepartment of Electrical and Computer Engineering; University of Toronto; 35 St. George Street Toronto Ontario M5S 1A4 Canada
dc.contributor.institutionDepartment of Mechanical and Industrial Engineering; University of Toronto; 5 Kings College Road Toronto Ontario M5S 3G8 Canada
kaust.personTian, Yi
kaust.personFavraud, Gael
kaust.personBonifazi, Marcella
kaust.personLi, Jun
kaust.personZhang, Xixiang
kaust.personFratalocchi, Andrea
kaust.grant.numberOSR-2016-CRG5-2995


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