Modification effect of organic dyes on photocatalytic water splitting activity of KTa(Zr)O3

Masakiyo Nagatomo; Hidehisa Hagiwara; Shintaro Ida; Tatsumi Ishihara

doi:10.5796/electrochemistry.79.779

Modification effect of organic dyes on photocatalytic water splitting activity of KTa(Zr)O₃

Masakiyo Nagatomo, Hidehisa Hagiwara, Shintaro Ida, Tatsumi Ishihara^*

^*Corresponding author for this work

Hydrogen Isotope Research Center, Organization for Promotion of Research

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

11 Scopus citations

Abstract

Effects of dye modification on photocatalytic water splitting were investigated using Zr-doped potassium tantalate (KTa(Zr)O³). Various types of organic dyes, xanthenes, triphenylmethanes, carotenoids and polycyclic aromatic hydrocarbon, were investigated as modification dye. Among them, rhodamine 6G effectively improved the H² and O² formation rate of photocatalytic water splitting on KTa(Zr)O³ It was found that the organic dye, which has a lowest unoccupied molecular orbital (LUMO) energy level at -0.9 V vs. NHE, shows a positive effect on the photocatalytic activity, suggesting that the suitable electron orbital level exists for charge transfer from KTa03 to organic dye followed by Pt cocatalyst.

Original language	English
Pages (from-to)	779-782
Number of pages	4
Journal	Electrochemistry
Volume	79
Issue number	10
DOIs	https://doi.org/10.5796/electrochemistry.79.779
State	Published - 2011/10

Keywords

Dye-Modification
Rhodamine 6G

ASJC Scopus subject areas

Electrochemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.5796/electrochemistry.79.779

Cite this

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title = "Modification effect of organic dyes on photocatalytic water splitting activity of KTa(Zr)O3",

abstract = "Effects of dye modification on photocatalytic water splitting were investigated using Zr-doped potassium tantalate (KTa(Zr)O3). Various types of organic dyes, xanthenes, triphenylmethanes, carotenoids and polycyclic aromatic hydrocarbon, were investigated as modification dye. Among them, rhodamine 6G effectively improved the H2 and O2 formation rate of photocatalytic water splitting on KTa(Zr)O3 It was found that the organic dye, which has a lowest unoccupied molecular orbital (LUMO) energy level at -0.9 V vs. NHE, shows a positive effect on the photocatalytic activity, suggesting that the suitable electron orbital level exists for charge transfer from KTa03 to organic dye followed by Pt cocatalyst.",

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AU - Nagatomo, Masakiyo

AU - Hagiwara, Hidehisa

AU - Ida, Shintaro

AU - Ishihara, Tatsumi

PY - 2011/10

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N2 - Effects of dye modification on photocatalytic water splitting were investigated using Zr-doped potassium tantalate (KTa(Zr)O3). Various types of organic dyes, xanthenes, triphenylmethanes, carotenoids and polycyclic aromatic hydrocarbon, were investigated as modification dye. Among them, rhodamine 6G effectively improved the H2 and O2 formation rate of photocatalytic water splitting on KTa(Zr)O3 It was found that the organic dye, which has a lowest unoccupied molecular orbital (LUMO) energy level at -0.9 V vs. NHE, shows a positive effect on the photocatalytic activity, suggesting that the suitable electron orbital level exists for charge transfer from KTa03 to organic dye followed by Pt cocatalyst.

AB - Effects of dye modification on photocatalytic water splitting were investigated using Zr-doped potassium tantalate (KTa(Zr)O3). Various types of organic dyes, xanthenes, triphenylmethanes, carotenoids and polycyclic aromatic hydrocarbon, were investigated as modification dye. Among them, rhodamine 6G effectively improved the H2 and O2 formation rate of photocatalytic water splitting on KTa(Zr)O3 It was found that the organic dye, which has a lowest unoccupied molecular orbital (LUMO) energy level at -0.9 V vs. NHE, shows a positive effect on the photocatalytic activity, suggesting that the suitable electron orbital level exists for charge transfer from KTa03 to organic dye followed by Pt cocatalyst.

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