A novel composite photocatalyst for water splitting hydrogen production

Honghui Yang; Liejin Guo; Wei Yan; Hongtan Liu

doi:10.1016/j.jpowsour.2005.11.106

A novel composite photocatalyst for water splitting hydrogen production

Honghui Yang, Liejin Guo, Wei Yan, Hongtan Liu

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article

76 Scopus citations

Abstract

A novel composite photocatalyst, Pt-TiO_2-xN_x-WO₃ was synthesized by the template method and characterized by X-ray diffraction (XRD), ultraviolet-visible light diffusion spectroscopy (UV-vis), and element analysis. XRD spectra indicated that the photocatalyst was in anatase form and the diagnostic peak for WO₃ existed. Combined with the XRD spectra and the results of elemental analysis, the formula of the composite photocatalyst was determined to be Pt-TiO_2-xN_x-WO₃. UV-vis spectra showed the absorption edge was red-shifted to around 750 nm. Under the irradiation of ultraviolet, and with Na₂S/Na₂SO₃ as the sacrificial reagent, the composite photocatalyst showed higher hydrogen production activity than anatase TiO₂, and under irradiation with visible light (λ > 400 nm) it showed higher hydrogen production activity than TiO_2-xN_x while the anatase TiO₂ showed negligible activity. An explanation was put forward for the mechanism of the red-shift of the absorption edge and the hydrogen production activity improvement.

Original language	English (US)
Pages (from-to)	1305-1309
Number of pages	5
Journal	Journal of Power Sources
Volume	159
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2005.11.106
State	Published - Sep 22 2006

Keywords

Composite photocatalyst
Hydrogen production
Nitrogen-doped titania
Photocatalyst

ASJC Scopus subject areas

Electrochemistry
Fuel Technology
Materials Chemistry
Energy (miscellaneous)

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Yang, H., Guo, L., Yan, W., & Liu, H. (2006). A novel composite photocatalyst for water splitting hydrogen production. Journal of Power Sources, 159(2), 1305-1309. https://doi.org/10.1016/j.jpowsour.2005.11.106

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title = "A novel composite photocatalyst for water splitting hydrogen production",

abstract = "A novel composite photocatalyst, Pt-TiO2-xNx-WO3 was synthesized by the template method and characterized by X-ray diffraction (XRD), ultraviolet-visible light diffusion spectroscopy (UV-vis), and element analysis. XRD spectra indicated that the photocatalyst was in anatase form and the diagnostic peak for WO3 existed. Combined with the XRD spectra and the results of elemental analysis, the formula of the composite photocatalyst was determined to be Pt-TiO2-xNx-WO3. UV-vis spectra showed the absorption edge was red-shifted to around 750 nm. Under the irradiation of ultraviolet, and with Na2S/Na2SO3 as the sacrificial reagent, the composite photocatalyst showed higher hydrogen production activity than anatase TiO2, and under irradiation with visible light (λ > 400 nm) it showed higher hydrogen production activity than TiO2-xNx while the anatase TiO2 showed negligible activity. An explanation was put forward for the mechanism of the red-shift of the absorption edge and the hydrogen production activity improvement.",

keywords = "Composite photocatalyst, Hydrogen production, Nitrogen-doped titania, Photocatalyst",

author = "Honghui Yang and Liejin Guo and Wei Yan and Hongtan Liu",

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doi = "10.1016/j.jpowsour.2005.11.106",

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AU - Yang, Honghui

AU - Guo, Liejin

AU - Yan, Wei

AU - Liu, Hongtan

PY - 2006/9/22

Y1 - 2006/9/22

N2 - A novel composite photocatalyst, Pt-TiO2-xNx-WO3 was synthesized by the template method and characterized by X-ray diffraction (XRD), ultraviolet-visible light diffusion spectroscopy (UV-vis), and element analysis. XRD spectra indicated that the photocatalyst was in anatase form and the diagnostic peak for WO3 existed. Combined with the XRD spectra and the results of elemental analysis, the formula of the composite photocatalyst was determined to be Pt-TiO2-xNx-WO3. UV-vis spectra showed the absorption edge was red-shifted to around 750 nm. Under the irradiation of ultraviolet, and with Na2S/Na2SO3 as the sacrificial reagent, the composite photocatalyst showed higher hydrogen production activity than anatase TiO2, and under irradiation with visible light (λ > 400 nm) it showed higher hydrogen production activity than TiO2-xNx while the anatase TiO2 showed negligible activity. An explanation was put forward for the mechanism of the red-shift of the absorption edge and the hydrogen production activity improvement.

AB - A novel composite photocatalyst, Pt-TiO2-xNx-WO3 was synthesized by the template method and characterized by X-ray diffraction (XRD), ultraviolet-visible light diffusion spectroscopy (UV-vis), and element analysis. XRD spectra indicated that the photocatalyst was in anatase form and the diagnostic peak for WO3 existed. Combined with the XRD spectra and the results of elemental analysis, the formula of the composite photocatalyst was determined to be Pt-TiO2-xNx-WO3. UV-vis spectra showed the absorption edge was red-shifted to around 750 nm. Under the irradiation of ultraviolet, and with Na2S/Na2SO3 as the sacrificial reagent, the composite photocatalyst showed higher hydrogen production activity than anatase TiO2, and under irradiation with visible light (λ > 400 nm) it showed higher hydrogen production activity than TiO2-xNx while the anatase TiO2 showed negligible activity. An explanation was put forward for the mechanism of the red-shift of the absorption edge and the hydrogen production activity improvement.

KW - Composite photocatalyst

KW - Hydrogen production

KW - Nitrogen-doped titania

KW - Photocatalyst

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