Dye-modification effects on water splitting activity of GaN:ZnO photocatalyst

Hidehisa Hagiwara, Masakiyo Nagatomo, Chihiro Seto, Shintaro Ida, Tatsumi Ishihara

Research output: Contribution to journalArticle

19 Citations (Scopus)

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 languageEnglish
Pages (from-to)41-48
Number of pages8
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume272
DOIs
Publication statusPublished - Sep 25 2013
Externally publishedYes

Fingerprint

water splitting
Photocatalysts
Coloring Agents
Dyes
dyes
Porphyrins
porphyrins
Water
Fluorescence
fluorescence
Chromium
Quantum efficiency
Energy transfer
Charge transfer
Chlorides
quantum efficiency
chromium
Photoluminescence
electron transfer
energy transfer

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 journalArticle

Hagiwara, Hidehisa ; Nagatomo, Masakiyo ; Seto, Chihiro ; Ida, Shintaro ; Ishihara, Tatsumi. / Dye-modification effects on water splitting activity of GaN:ZnO photocatalyst. In: Journal of Photochemistry and Photobiology A: Chemistry. 2013 ; Vol. 272. pp. 41-48.
@article{2a84ca2fb8fd4ac389674308373710d4,
title = "Dye-modification effects on water splitting activity of GaN:ZnO photocatalyst",
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.",
author = "Hidehisa Hagiwara and Masakiyo Nagatomo and Chihiro Seto and Shintaro Ida and Tatsumi Ishihara",
year = "2013",
month = "9",
day = "25",
doi = "10.1016/j.jphotochem.2013.08.022",
language = "English",
volume = "272",
pages = "41--48",
journal = "Journal of Photochemistry and Photobiology A: Chemistry",
issn = "1010-6030",
publisher = "Elsevier",

}

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 -