Unravelling the key role of surface features behind facet-dependent photocatalysis of anatase TiO2

Yung-Kang Peng; Benedict Keeling; Yiyang Li; Jianwei Zheng; Tianyi Chen; Hung-Lung Chou; Tim J. Puchtler; Robert A. Taylor; Shik Chi Edman Tsang

doi:10.1039/c9cc01561b

Unravelling the key role of surface features behind facet-dependent photocatalysis of anatase TiO₂

Yung-Kang Peng^*
, Benedict Keeling
, Yiyang Li
, Jianwei Zheng
, Tianyi Chen
, Hung-Lung Chou
, Tim J. Puchtler
, Robert A. Taylor
, Shik Chi Edman Tsang

^*Corresponding author for this work

Department of Chemistry

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

39 Citations (Scopus)

Abstract

The high activity of nanocrystallites is commonly attributed to the terminal high-energy facets. However, we demonstrate that the high activity of the anatase TiO₂ (001) facet in photocatalytic H₂ evolution is not due to its high intrinsic surface energy, but local electronic effects created by surface features on the facet.

Original language	English
Pages (from-to)	4415-4418
Number of pages	4
Journal	Chemical Communications
Volume	55
Issue number	30
Online published	18 Mar 2019
DOIs	https://doi.org/10.1039/c9cc01561b
Publication status	Published - 18 Apr 2019

Funding

The authors would like to thank the EPSRC research council of UK for funding support (EP/K040375/1). The work described in this paper was also supported by a grant from City University of Hong Kong (Project No. 7200584 and 9610415).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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Cite this

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abstract = " The high activity of nanocrystallites is commonly attributed to the terminal high-energy facets. However, we demonstrate that the high activity of the anatase TiO2 (001) facet in photocatalytic H2 evolution is not due to its high intrinsic surface energy, but local electronic effects created by surface features on the facet. ",

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AU - Keeling, Benedict

AU - Li, Yiyang

AU - Zheng, Jianwei

AU - Chen, Tianyi

AU - Chou, Hung-Lung

AU - Puchtler, Tim J.

AU - Taylor, Robert A.

AU - Tsang, Shik Chi Edman

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AB - The high activity of nanocrystallites is commonly attributed to the terminal high-energy facets. However, we demonstrate that the high activity of the anatase TiO2 (001) facet in photocatalytic H2 evolution is not due to its high intrinsic surface energy, but local electronic effects created by surface features on the facet.

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M3 - RGC 21 - Publication in refereed journal

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