Abstract
Photocatalytic water splitting activities of GaN:ZnO modified with various porphyrins were investigated. Tetraphenylporphyrinato-chromium(III) chloride (Cr-TPPCl) showed the most positive effect on the photocatalytic activity of GaN:ZnO, and worked without decomposition in the photocatalytic water splitting for 24 h. Fluorescence spectra measurements revealed that photoluminescence intensity of GaN:ZnO was decreased by Cr-TPPCl modification and by loading RhOX and NiO cocatalysts. It suggests that charge or energy transfer occurs from GaN:ZnO to Cr-TPPCl and from Cr-TPPCl to RhOX-NiO cocatalysts. Fluorescence lifetime measurement showed electron transfer occurred from GaN:ZnO to Cr-TPPCl, and thus artificial photosynthetic water splitting was achieved on GaN:ZnO photocatalyst modified with various porphyrins under visible light. The apparent quantum efficiency of the dye-modified GaN:ZnO photocatalyst (RhOX (0.1 wt%), NiO (0.1 wt%)/Dye (0.5 wt%)/IrO 2 (0.1 wt%)-GaN:ZnO) was 2.73% at 410 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 41-48 |
| Number of pages | 8 |
| Journal | Journal of Photochemistry and Photobiology A: Chemistry |
| Volume | 272 |
| DOIs | |
| Publication status | Published - Sep 25 2013 |
| Externally published | Yes |
Fingerprint
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Physics and Astronomy(all)
Cite this
Dye-modification effects on water splitting activity of GaN:ZnO photocatalyst. / Hagiwara, Hidehisa; Nagatomo, Masakiyo; Seto, Chihiro; Ida, Shintaro; Ishihara, Tatsumi.
In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 272, 25.09.2013, p. 41-48.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dye-modification effects on water splitting activity of GaN:ZnO photocatalyst
AU - Hagiwara, Hidehisa
AU - Nagatomo, Masakiyo
AU - Seto, Chihiro
AU - Ida, Shintaro
AU - Ishihara, Tatsumi
PY - 2013/9/25
Y1 - 2013/9/25
N2 - Photocatalytic water splitting activities of GaN:ZnO modified with various porphyrins were investigated. Tetraphenylporphyrinato-chromium(III) chloride (Cr-TPPCl) showed the most positive effect on the photocatalytic activity of GaN:ZnO, and worked without decomposition in the photocatalytic water splitting for 24 h. Fluorescence spectra measurements revealed that photoluminescence intensity of GaN:ZnO was decreased by Cr-TPPCl modification and by loading RhOX and NiO cocatalysts. It suggests that charge or energy transfer occurs from GaN:ZnO to Cr-TPPCl and from Cr-TPPCl to RhOX-NiO cocatalysts. Fluorescence lifetime measurement showed electron transfer occurred from GaN:ZnO to Cr-TPPCl, and thus artificial photosynthetic water splitting was achieved on GaN:ZnO photocatalyst modified with various porphyrins under visible light. The apparent quantum efficiency of the dye-modified GaN:ZnO photocatalyst (RhOX (0.1 wt%), NiO (0.1 wt%)/Dye (0.5 wt%)/IrO 2 (0.1 wt%)-GaN:ZnO) was 2.73% at 410 nm.
AB - Photocatalytic water splitting activities of GaN:ZnO modified with various porphyrins were investigated. Tetraphenylporphyrinato-chromium(III) chloride (Cr-TPPCl) showed the most positive effect on the photocatalytic activity of GaN:ZnO, and worked without decomposition in the photocatalytic water splitting for 24 h. Fluorescence spectra measurements revealed that photoluminescence intensity of GaN:ZnO was decreased by Cr-TPPCl modification and by loading RhOX and NiO cocatalysts. It suggests that charge or energy transfer occurs from GaN:ZnO to Cr-TPPCl and from Cr-TPPCl to RhOX-NiO cocatalysts. Fluorescence lifetime measurement showed electron transfer occurred from GaN:ZnO to Cr-TPPCl, and thus artificial photosynthetic water splitting was achieved on GaN:ZnO photocatalyst modified with various porphyrins under visible light. The apparent quantum efficiency of the dye-modified GaN:ZnO photocatalyst (RhOX (0.1 wt%), NiO (0.1 wt%)/Dye (0.5 wt%)/IrO 2 (0.1 wt%)-GaN:ZnO) was 2.73% at 410 nm.
UR - http://www.scopus.com/inward/record.url?scp=84884391044&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884391044&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2013.08.022
DO - 10.1016/j.jphotochem.2013.08.022
M3 - Article
AN - SCOPUS:84884391044
VL - 272
SP - 41
EP - 48
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
SN - 1010-6030
ER -