Construction of Spatial Charge Separation Facets on BaTaO2N Crystals by Flux Growth Approach for Visible-Light-Driven H2 Production

Ying Luo; Sayaka Suzuki; Zheng Wang; Kunio Yubuta; Junie Jhon M. Vequizo; Akira Yamakata; Hiromasa Shiiba; Takashi Hisatomi; Kazunari Domen; Katsuya Teshima

doi:10.1021/acsami.9b03747

Construction of Spatial Charge Separation Facets on BaTaO₂N Crystals by Flux Growth Approach for Visible-Light-Driven H₂ Production

Ying Luo, Sayaka Suzuki, Zheng Wang, Kunio Yubuta, Junie Jhon M. Vequizo, Akira Yamakata, Hiromasa Shiiba, Takashi Hisatomi, Kazunari Domen, Katsuya Teshima

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Low charge separation efficiencies are regarded as obstacles that limit the improvement in the photocatalytic performance of BaTaO₂N. In this study, we demonstrated that the anisotropic facets ({100} and {110} facets) of BaTaO₂N for efficient spatial charge separation were successfully constructed using the one-pot flux-assisted nitridation approach. As a result, the photocatalytic activity for H₂ production on BaTaO₂N with coexposed {100} and {110} facets was nearly 10-fold over that of BaTaO₂N with only {100} facets and that of the conventional irregularly shaped sample. This finding provides an innovative approach to the development of efficient (oxy)nitride photocatalysts for solar energy conversion.

Original language	English
Journal	ACS Applied Materials and Interfaces
DOIs	https://doi.org/10.1021/acsami.9b03747
Publication status	Accepted/In press - 2019
Externally published	Yes

Keywords

(oxy)nitride photocatalyst
anisotropic facet
charge separation
flux method
photocatalytic activity

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1021/acsami.9b03747

Cite this

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title = "Construction of Spatial Charge Separation Facets on BaTaO2N Crystals by Flux Growth Approach for Visible-Light-Driven H2 Production",

abstract = "Low charge separation efficiencies are regarded as obstacles that limit the improvement in the photocatalytic performance of BaTaO2N. In this study, we demonstrated that the anisotropic facets ({100} and {110} facets) of BaTaO2N for efficient spatial charge separation were successfully constructed using the one-pot flux-assisted nitridation approach. As a result, the photocatalytic activity for H2 production on BaTaO2N with coexposed {100} and {110} facets was nearly 10-fold over that of BaTaO2N with only {100} facets and that of the conventional irregularly shaped sample. This finding provides an innovative approach to the development of efficient (oxy)nitride photocatalysts for solar energy conversion.",

keywords = "(oxy)nitride photocatalyst, anisotropic facet, charge separation, flux method, photocatalytic activity",

author = "Ying Luo and Sayaka Suzuki and Zheng Wang and Kunio Yubuta and Vequizo, {Junie Jhon M.} and Akira Yamakata and Hiromasa Shiiba and Takashi Hisatomi and Kazunari Domen and Katsuya Teshima",

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language = "English",

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T1 - Construction of Spatial Charge Separation Facets on BaTaO2N Crystals by Flux Growth Approach for Visible-Light-Driven H2 Production

AU - Luo, Ying

AU - Suzuki, Sayaka

AU - Wang, Zheng

AU - Yubuta, Kunio

AU - Vequizo, Junie Jhon M.

AU - Yamakata, Akira

AU - Shiiba, Hiromasa

AU - Hisatomi, Takashi

AU - Domen, Kazunari

AU - Teshima, Katsuya

PY - 2019

Y1 - 2019

N2 - Low charge separation efficiencies are regarded as obstacles that limit the improvement in the photocatalytic performance of BaTaO2N. In this study, we demonstrated that the anisotropic facets ({100} and {110} facets) of BaTaO2N for efficient spatial charge separation were successfully constructed using the one-pot flux-assisted nitridation approach. As a result, the photocatalytic activity for H2 production on BaTaO2N with coexposed {100} and {110} facets was nearly 10-fold over that of BaTaO2N with only {100} facets and that of the conventional irregularly shaped sample. This finding provides an innovative approach to the development of efficient (oxy)nitride photocatalysts for solar energy conversion.

AB - Low charge separation efficiencies are regarded as obstacles that limit the improvement in the photocatalytic performance of BaTaO2N. In this study, we demonstrated that the anisotropic facets ({100} and {110} facets) of BaTaO2N for efficient spatial charge separation were successfully constructed using the one-pot flux-assisted nitridation approach. As a result, the photocatalytic activity for H2 production on BaTaO2N with coexposed {100} and {110} facets was nearly 10-fold over that of BaTaO2N with only {100} facets and that of the conventional irregularly shaped sample. This finding provides an innovative approach to the development of efficient (oxy)nitride photocatalysts for solar energy conversion.

KW - (oxy)nitride photocatalyst

KW - anisotropic facet

KW - charge separation

KW - flux method

KW - photocatalytic activity

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