Effects of acceptor doping to KTaO3 on photocatalytic decomposition of pure H2O

Tatsumi Ishihara; Hiroyasu Nishiguchi; Keiko Fukamachi; Yusaku Takita

doi:10.1021/jp983590k

Effects of acceptor doping to KTaO₃ on photocatalytic decomposition of pure H₂O

Tatsumi Ishihara, Hiroyasu Nishiguchi, Keiko Fukamachi, Yusaku Takita

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

190 Citations (Scopus)

Abstract

It was found for the first time that controlling the charge density in oxide semiconductors with an acceptor was effective for improving the activity to photolysis of H₂O. Although the photodecomposition activity of NiO supported on nondoped KTaO₃ was negligibly small, doping small amount of acceptors such as tri- or tetravalent cations to KTaO₃ increased the formation rate of H₂ and O₂. In particular, it was found that NiO supported on KTaO₃ doped with 8 mol % Zr⁴⁺ exhibits higher activity to the photocatalytic decomposition of H₂O than that of a well-known photocatalyst of PtTTiO₂ .

Original language	English
Pages (from-to)	1-3
Number of pages	3
Journal	Journal of Physical Chemistry B
Volume	103
Issue number	1
DOIs	https://doi.org/10.1021/jp983590k
Publication status	Published - Jan 7 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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abstract = "It was found for the first time that controlling the charge density in oxide semiconductors with an acceptor was effective for improving the activity to photolysis of H2O. Although the photodecomposition activity of NiO supported on nondoped KTaO3 was negligibly small, doping small amount of acceptors such as tri- or tetravalent cations to KTaO3 increased the formation rate of H2 and O2. In particular, it was found that NiO supported on KTaO3 doped with 8 mol % Zr4+ exhibits higher activity to the photocatalytic decomposition of H2O than that of a well-known photocatalyst of PtTTiO2 .",

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AU - Ishihara, Tatsumi

AU - Nishiguchi, Hiroyasu

AU - Fukamachi, Keiko

AU - Takita, Yusaku

PY - 1999/1/7

Y1 - 1999/1/7

N2 - It was found for the first time that controlling the charge density in oxide semiconductors with an acceptor was effective for improving the activity to photolysis of H2O. Although the photodecomposition activity of NiO supported on nondoped KTaO3 was negligibly small, doping small amount of acceptors such as tri- or tetravalent cations to KTaO3 increased the formation rate of H2 and O2. In particular, it was found that NiO supported on KTaO3 doped with 8 mol % Zr4+ exhibits higher activity to the photocatalytic decomposition of H2O than that of a well-known photocatalyst of PtTTiO2 .

AB - It was found for the first time that controlling the charge density in oxide semiconductors with an acceptor was effective for improving the activity to photolysis of H2O. Although the photodecomposition activity of NiO supported on nondoped KTaO3 was negligibly small, doping small amount of acceptors such as tri- or tetravalent cations to KTaO3 increased the formation rate of H2 and O2. In particular, it was found that NiO supported on KTaO3 doped with 8 mol % Zr4+ exhibits higher activity to the photocatalytic decomposition of H2O than that of a well-known photocatalyst of PtTTiO2 .

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Effects of acceptor doping to KTaO₃ on photocatalytic decomposition of pure H₂O

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