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Enhanced hot electron generation by inverse metal-oxide interfaces on catalytic nanodiode

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Title
Enhanced hot electron generation by inverse metal-oxide interfaces on catalytic nanodiode
Author(s)
Hyosun Lee; Sinmyung Yoon; Jinwoung Jo; Beomjoon Jeon; Taeghwan Hyeon; Kwangjin An; Jeong Young Park
Publication Date
2019-05
Journal
FARADAY DISCUSSIONS, v.214, no., pp.353 - 364
Publisher
ROYAL SOC CHEMISTRY
Abstract
Identifying the electronic behavior of metal-oxide interfaces is essential for understanding the origin of catalytic properties and for engineering catalyst structures with the desired reactivity. For a mechanistic understanding of hot electron dynamics at inverse oxide/metal interfaces, we employed a new catalytic nanodiode by combining Co3O4 nanocubes (NCs) with a Pt/TiO2 nanodiode that exhibits nanoscale metal-oxide interfaces. We show that the chemicurrent, which is well correlated with the catalytic activity, is enhanced at the inverse oxide/metal (CoO/Pt) interfaces during H-2 oxidation. Based on quantitative visualization of the electronic transfer efficiency with chemicurrent yield, we show that electronic perturbation of oxide/metal interfacial sites not only promotes the generation of hot electrons, but improves catalytic activity. © The Royal Society of Chemistry 2019
URI
https://pr.ibs.re.kr/handle/8788114/6927
ISSN
1359-6640
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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Faraday Discuss., 2019, 214, 353.pdfDownload

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