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Electrochemical Oxidation of Water to Dioxygen Catalyzed by the Oxidized Form of the Bis(ruthenium – hydroxo) Complex in H₂O

Tohru Wada

Institute for Molecular Science Department of Structural Molecular Science Graduate University for Advanced Studies 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585, Japan, Fax: (+81) 564-55-5245

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Kiyoshi Tsuge Dr.,

Kiyoshi Tsuge Dr.

Institute for Molecular Science Department of Structural Molecular Science Graduate University for Advanced Studies 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585, Japan, Fax: (+81) 564-55-5245

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Koji Tanaka Prof. Dr.,

Koji Tanaka Prof. Dr.

[email protected]

Institute for Molecular Science Department of Structural Molecular Science Graduate University for Advanced Studies 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585, Japan, Fax: (+81) 564-55-5245

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Tohru Wada,

Tohru Wada

Institute for Molecular Science Department of Structural Molecular Science Graduate University for Advanced Studies 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585, Japan, Fax: (+81) 564-55-5245

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Kiyoshi Tsuge Dr.,

Kiyoshi Tsuge Dr.

Institute for Molecular Science Department of Structural Molecular Science Graduate University for Advanced Studies 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585, Japan, Fax: (+81) 564-55-5245

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Koji Tanaka Prof. Dr.,

Koji Tanaka Prof. Dr.

[email protected]

Institute for Molecular Science Department of Structural Molecular Science Graduate University for Advanced Studies 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585, Japan, Fax: (+81) 564-55-5245

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First published: 13 April 2000

https://doi.org/10.1002/(SICI)1521-3757(20000417)112:8<1539::AID-ANGE1539>3.0.CO;2-Y

Citations: 36

This work was partly supported by the Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Science, Sports, and Culture of Japan (No. 10149259).

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Abstract

Ein Strukturmodell des O₂-generierenden Zentrums vom Photosystem II stellt der Komplex 1 dar. Die beiden Ruthenium-Hydroxo-Einheiten der Verbindung spielen eine wichtige Rolle bei der Oxidation von Wasser zu O₂. Nach Abscheidung des Komplexes auf einer Indium-/Zinnoxid-Elektrode konnten 15.0 mL O₂ (Umsatzzahl 6730) bei der unter Spannungskontrolle (+1.7 V) durchgeführten Elektrolyse von Wasser erzeugt werden.

References

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13 Two compartment cells separated by a Nafion membrane were filled with an H₃PO₄/KOH buffer solution (1.0M, 60 mL) and He gas was bubbled into the solution to remove O₂ from the aqueous phase. Controlled-potential electrolysis was performed with the ITO electrode modified with the bis(ruthenium-hydroxo) complex (1.0 × 10⁻⁷mol per 10 cm²) as the working electrode, a platinum plate (2.0 cm²) as the counter electrode, and an Ag/AgCl reference electrode. Evolved dioxygen was determined by GC measurement.
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14 The complex was completely detached from the ITO electrode in 40 h under the controlled-potential electrolysis conditions at + 1.7 V in H₂O.
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Volume112, Issue8

April 17, 2000

Pages 1539-1542

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Electrochemical Oxidation of Water to Dioxygen Catalyzed by the Oxidized Form of the Bis(ruthenium – hydroxo) Complex in H₂O

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Electrochemical Oxidation of Water to Dioxygen Catalyzed by the Oxidized Form of the Bis(ruthenium – hydroxo) Complex in H2O

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Electrochemical Oxidation of Water to Dioxygen Catalyzed by the Oxidized Form of the Bis(ruthenium – hydroxo) Complex in H₂O