Inorganic chemistry in service of renewable energy science

Solar driven water oxidation by bioinspired manganese catalysts

G Charles Dismukes, Robin Brimblecombe, Annette Koo, Gerhard Swiegers, Leone Spiccia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Catalysts made from earth-abundant materials are needed for the splitting of water into its elements for renewable hydrogen fuel production. We have coupled a dye-sensitized titania film with a manganese-oxo "cubium" water-oxidation catalyst, [Mn4O4L6]+ (1+, L = bis(methoxyphenyl)phosphinate) to achieve the direct oxidation of water using visible light. The photo-catalyst assembly was prepared by sensitizing a titania-coated FTO conductive glass electrode with a ruthenium(II) dye, followed by over-coating with a proton-conducting membrane (Nafion) doped with 1+. Illumination of this photo-anode, when immersed in an aqueous electrolyte, generates a photocurrent that is sustained for multiple hours without the need for an applied potential. The complete photo-anode releases protons to solution and oxygen gas, simultaneously with photocurrent generation. The cooperation of all three components: catalyst, proton conductor and dye sensitized titania film were necessary for water oxidation to be achieved using only light as the driving force. This photoanode represents a functional molecular analog of photosystem II, the natural apparatus found in photosynthetic organisms.

Original languageEnglish
Title of host publicationACS National Meeting Book of Abstracts
Publication statusPublished - 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: Aug 16 2009Aug 20 2009

Other

Other238th National Meeting and Exposition of the American Chemical Society, ACS 2009
CountryUnited States
CityWashington, DC
Period8/16/098/20/09

Fingerprint

Manganese
Protons
Oxidation
Catalysts
Coloring Agents
Dyes
Water
Titanium
Photocurrents
Anodes
Hydrogen fuels
Photosystem II Protein Complex
Ruthenium
Electrolytes
Lighting
Gases
Earth (planet)
Oxygen
Membranes
Glass

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Dismukes, G. C., Brimblecombe, R., Koo, A., Swiegers, G., & Spiccia, L. (2009). Inorganic chemistry in service of renewable energy science: Solar driven water oxidation by bioinspired manganese catalysts. In ACS National Meeting Book of Abstracts

Inorganic chemistry in service of renewable energy science : Solar driven water oxidation by bioinspired manganese catalysts. / Dismukes, G Charles; Brimblecombe, Robin; Koo, Annette; Swiegers, Gerhard; Spiccia, Leone.

ACS National Meeting Book of Abstracts. 2009.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dismukes, GC, Brimblecombe, R, Koo, A, Swiegers, G & Spiccia, L 2009, Inorganic chemistry in service of renewable energy science: Solar driven water oxidation by bioinspired manganese catalysts. in ACS National Meeting Book of Abstracts. 238th National Meeting and Exposition of the American Chemical Society, ACS 2009, Washington, DC, United States, 8/16/09.
Dismukes GC, Brimblecombe R, Koo A, Swiegers G, Spiccia L. Inorganic chemistry in service of renewable energy science: Solar driven water oxidation by bioinspired manganese catalysts. In ACS National Meeting Book of Abstracts. 2009
Dismukes, G Charles ; Brimblecombe, Robin ; Koo, Annette ; Swiegers, Gerhard ; Spiccia, Leone. / Inorganic chemistry in service of renewable energy science : Solar driven water oxidation by bioinspired manganese catalysts. ACS National Meeting Book of Abstracts. 2009.
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