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.
| Original language | English |
|---|---|
| Pages (from-to) | 1305-1309 |
| Number of pages | 5 |
| Journal | Journal of Power Sources |
| Volume | 159 |
| Issue number | 2 |
| DOIs | |
| State | Published - Sep 22 2006 |
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Keywords
- Composite photocatalyst
- Hydrogen production
- Nitrogen-doped titania
- Photocatalyst
ASJC Scopus subject areas
- Electrochemistry
- Fuel Technology
- Materials Chemistry
- Energy (miscellaneous)
Cite this
A novel composite photocatalyst for water splitting hydrogen production. / Yang, Honghui; Guo, Liejin; Yan, Wei; Liu, Hongtan.
In: Journal of Power Sources, Vol. 159, No. 2, 22.09.2006, p. 1305-1309.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A novel composite photocatalyst for water splitting hydrogen production
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
UR - http://www.scopus.com/inward/record.url?scp=33748059568&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748059568&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2005.11.106
DO - 10.1016/j.jpowsour.2005.11.106
M3 - Article
AN - SCOPUS:33748059568
VL - 159
SP - 1305
EP - 1309
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 2
ER -