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Crystal-facet-dependent hot-electron transfer in plasmonic-Au/semiconductor heterostructures for efficient solar photocatalysis

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Title: Crystal-facet-dependent hot-electron transfer in plasmonic-Au/semiconductor heterostructures for efficient solar photocatalysis
Authors: Liu, Guigao Browse this author
Wang, Tao Browse this author
Zhou, Wei Browse this author
Meng, Xianguang Browse this author
Zhang, Huabin Browse this author
Liu, Huimin Browse this author
Kako, Tetsuya Browse this author →KAKEN DB
Ye, Jinhua Browse this author →KAKEN DB
Issue Date: 7-Aug-2015
Publisher: Royal Society of Chemistry
Journal Title: Journal of materials chemistry C
Volume: 3
Issue: 29
Start Page: 7538
End Page: 7542
Publisher DOI: 10.1039/c5tc01406a
Abstract: Here, using Au-BiOCl as models, we show the significant crystal facet effects of the semiconductor on hot-electron transfer within such plasmonic heterostructures under visible light. It is found that {010} facets of BiOCl are greatly advantageous over {001} facets for the hot-electron injection, as evidenced by steady-state diffuse reflectance spectroscopy and photoelectrochemical measurements. Consequently, Au-BiOCl-010 exhibits superior activity for photocatalytic aerobic oxidation of 2-propanol with a quantum efficiency of 1.3%, being 3.5 times higher than that of Au-BiOCl-001. The differences in band structure between the {001} and {010} facets of BiOCl may account for the facet-dependent hot-electron transfer characteristics.
Type: article (author version)
Appears in Collections:総合化学院 (Graduate School of Chemical Sciences and Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 葉 金花

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