Photocatalytic water splitting into H2 and O2 and charge separation mechanism on dye modified KTa(Zr)O3

Tatsumi Ishihara; Hidehisa Hagiwara; Shintaro Ida

doi:10.1063/1.4757525

Photocatalytic water splitting into H2 and O2 and charge separation mechanism on dye modified KTa(Zr)O3

Tatsumi Ishihara, Hidehisa Hagiwara, Shintaro Ida

Materials Science and Engineering, School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

In actual photosynthesis, Z scheme excitation is performed to separate electronic charge with high efficiency by using solar light. In this study, water splitting into H₂ and O₂ on dye modified KTa(Zr)O₃ was investigated and it was found that H₂ and O₂ formation rate is much improved by dye modification. Charge separation mechanism was further studied with transient spectroscopy and this study reveals that photo excitation in Cr-tetraphenyl porphyrin (Cr-TPP)/KTa(Zr)O₃ is analogous with Z scheme in photosynthesis and complete charge separation was achieved at room temperature.

Original language	English
Title of host publication	International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012
Pages	515-518
Number of pages	4
Volume	1482
DOIs	https://doi.org/10.1063/1.4757525
Publication status	Published - Dec 1 2012
Event	2nd International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012 - Kuala Lumpur, Malaysia Duration: Jun 12 2012 → Jun 14 2012

Other

Other	2nd International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012
Country	Malaysia
City	Kuala Lumpur
Period	6/12/12 → 6/14/12

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.4757525

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Ishihara, T, Hagiwara, H & Ida, S 2012, Photocatalytic water splitting into H2 and O2 and charge separation mechanism on dye modified KTa(Zr)O3 . in International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012. vol. 1482, pp. 515-518, 2nd International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012, Kuala Lumpur, Malaysia, 6/12/12. https://doi.org/10.1063/1.4757525

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abstract = "In actual photosynthesis, Z scheme excitation is performed to separate electronic charge with high efficiency by using solar light. In this study, water splitting into H2 and O2 on dye modified KTa(Zr)O3 was investigated and it was found that H2 and O2 formation rate is much improved by dye modification. Charge separation mechanism was further studied with transient spectroscopy and this study reveals that photo excitation in Cr-tetraphenyl porphyrin (Cr-TPP)/KTa(Zr)O3 is analogous with Z scheme in photosynthesis and complete charge separation was achieved at room temperature.",

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AU - Ida, Shintaro

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N2 - In actual photosynthesis, Z scheme excitation is performed to separate electronic charge with high efficiency by using solar light. In this study, water splitting into H2 and O2 on dye modified KTa(Zr)O3 was investigated and it was found that H2 and O2 formation rate is much improved by dye modification. Charge separation mechanism was further studied with transient spectroscopy and this study reveals that photo excitation in Cr-tetraphenyl porphyrin (Cr-TPP)/KTa(Zr)O3 is analogous with Z scheme in photosynthesis and complete charge separation was achieved at room temperature.

AB - In actual photosynthesis, Z scheme excitation is performed to separate electronic charge with high efficiency by using solar light. In this study, water splitting into H2 and O2 on dye modified KTa(Zr)O3 was investigated and it was found that H2 and O2 formation rate is much improved by dye modification. Charge separation mechanism was further studied with transient spectroscopy and this study reveals that photo excitation in Cr-tetraphenyl porphyrin (Cr-TPP)/KTa(Zr)O3 is analogous with Z scheme in photosynthesis and complete charge separation was achieved at room temperature.

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