Photocatalytic H2 evolution by layered perovskite Ca 3Ti2O7 codoped with Rh and Ln (Ln = La, Pr, Nd, Eu, Gd, Yb, and Y) under visible light irradiation

Shunsuke Nishimoto; Yoshihiro Okazaki; Motohide Matsuda; Michihiro Miyake

doi:10.2109/jcersj2.117.1175

Photocatalytic H₂ evolution by layered perovskite Ca ₃Ti₂O₇ codoped with Rh and Ln (Ln = La, Pr, Nd, Eu, Gd, Yb, and Y) under visible light irradiation

Shunsuke Nishimoto, Yoshihiro Okazaki, Motohide Matsuda, Michihiro Miyake

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

9 Citations (Scopus)

Abstract

Layered perovskite Ca₃Ti₂O₇ codoped with Rh and Ln (Ca_3-xLn_xTi_1.9Rh_0.1O ₇; Ln = La, Pr, Nd, Eu, Gd, Yb, and Y; 0 ≤ x ≤ 0.15) was synthesized by a conventional solid-state reaction to investigate the effects of Rh and Ln codoping on the photocatalytic activity. Rh and Ln-codoped Ca ₃Ti₂O₇ exhibited a higher photocatalytic activity than Rh-doped Ca₃Ti₂O₇ for H ₂ production from an aqueous methanol solution under visible light irradiation (γ > 420 nm). In addition, the induction period for H ₂ production was shortened by codoping with Rh and Ln. The codoped elements helped control the oxidation state of Rh ions and suppressed the formation of oxygen defects, improving the activity of the Rh-doped Ca ₃Ti₂O₇ photocatalyst.

Original language	English
Pages (from-to)	1175-1179
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	117
Issue number	1371
DOIs	https://doi.org/10.2109/jcersj2.117.1175
Publication status	Published - Nov 2009

Keywords

Codoping
Hydrogen production
Perovskite
Photocatalyst
Visible light response

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

UN SDGs

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

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10.2109/jcersj2.117.1175

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Photocatalytic H₂ evolution by layered perovskite Ca ₃Ti₂O₇ codoped with Rh and Ln (Ln = La, Pr, Nd, Eu, Gd, Yb, and Y) under visible light irradiation. / Nishimoto, Shunsuke; Okazaki, Yoshihiro; Matsuda, Motohide et al.

In: Journal of the Ceramic Society of Japan, Vol. 117, No. 1371, 11.2009, p. 1175-1179.

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

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title = "Photocatalytic H2 evolution by layered perovskite Ca 3Ti2O7 codoped with Rh and Ln (Ln = La, Pr, Nd, Eu, Gd, Yb, and Y) under visible light irradiation",

abstract = "Layered perovskite Ca3Ti2O7 codoped with Rh and Ln (Ca3-xLnxTi1.9Rh0.1O 7; Ln = La, Pr, Nd, Eu, Gd, Yb, and Y; 0 ≤ x ≤ 0.15) was synthesized by a conventional solid-state reaction to investigate the effects of Rh and Ln codoping on the photocatalytic activity. Rh and Ln-codoped Ca 3Ti2O7 exhibited a higher photocatalytic activity than Rh-doped Ca3Ti2O7 for H 2 production from an aqueous methanol solution under visible light irradiation (γ > 420 nm). In addition, the induction period for H 2 production was shortened by codoping with Rh and Ln. The codoped elements helped control the oxidation state of Rh ions and suppressed the formation of oxygen defects, improving the activity of the Rh-doped Ca 3Ti2O7 photocatalyst.",

keywords = "Codoping, Hydrogen production, Perovskite, Photocatalyst, Visible light response",

author = "Shunsuke Nishimoto and Yoshihiro Okazaki and Motohide Matsuda and Michihiro Miyake",

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doi = "10.2109/jcersj2.117.1175",

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AU - Nishimoto, Shunsuke

AU - Okazaki, Yoshihiro

AU - Matsuda, Motohide

AU - Miyake, Michihiro

PY - 2009/11

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N2 - Layered perovskite Ca3Ti2O7 codoped with Rh and Ln (Ca3-xLnxTi1.9Rh0.1O 7; Ln = La, Pr, Nd, Eu, Gd, Yb, and Y; 0 ≤ x ≤ 0.15) was synthesized by a conventional solid-state reaction to investigate the effects of Rh and Ln codoping on the photocatalytic activity. Rh and Ln-codoped Ca 3Ti2O7 exhibited a higher photocatalytic activity than Rh-doped Ca3Ti2O7 for H 2 production from an aqueous methanol solution under visible light irradiation (γ > 420 nm). In addition, the induction period for H 2 production was shortened by codoping with Rh and Ln. The codoped elements helped control the oxidation state of Rh ions and suppressed the formation of oxygen defects, improving the activity of the Rh-doped Ca 3Ti2O7 photocatalyst.

AB - Layered perovskite Ca3Ti2O7 codoped with Rh and Ln (Ca3-xLnxTi1.9Rh0.1O 7; Ln = La, Pr, Nd, Eu, Gd, Yb, and Y; 0 ≤ x ≤ 0.15) was synthesized by a conventional solid-state reaction to investigate the effects of Rh and Ln codoping on the photocatalytic activity. Rh and Ln-codoped Ca 3Ti2O7 exhibited a higher photocatalytic activity than Rh-doped Ca3Ti2O7 for H 2 production from an aqueous methanol solution under visible light irradiation (γ > 420 nm). In addition, the induction period for H 2 production was shortened by codoping with Rh and Ln. The codoped elements helped control the oxidation state of Rh ions and suppressed the formation of oxygen defects, improving the activity of the Rh-doped Ca 3Ti2O7 photocatalyst.

KW - Codoping

KW - Hydrogen production

KW - Perovskite

KW - Photocatalyst

KW - Visible light response

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