Catalytic solar water splitting inspired by photosynthesis. homogeneous catalysts with a Mechanical ("Machine-like") action

Gerhard F. Swiegers, G Charles Dismukes, Leone Spiccia, Robin Brimblecombe, Annette Koo, Jun Chen, Gordon G. Wallace

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

Abstract

Chemical reactions may be controlled by either: the minimum threshold energy that must be overcome during collisions between reactant molecules / atoms (the Activation Energy, Ea), or: the rate at which reactant collisions occur (the Collision Frequency, A) (for reactions with low Ea). Reactions of type (2) are governed by the physical, mechanical interaction of the reactants. Such mechanical processes are unusual, but not unknown in molecular catalysts. We examine the catalytic action and macroscopic properties of several abiological mechanical catalysts and show that they display distinct similarities to enzymes in general. An abiological model of the Photosystem II Water Oxidizing Complex that appears to employ a mechanical action has now been found to be a remarkably active and sustained molecular catalyst of water oxidation when illuminated by sunlight. A free-standing Dye-Sensitized Solar Cell that spontaneously splits water into hydrogen and oxygen has been developed using this catalyst.

Original languageEnglish
Title of host publicationACS National Meeting Book of Abstracts
Publication statusPublished - 2010
Event240th ACS National Meeting and Exposition - Boston, MA, United States
Duration: Aug 22 2010Aug 26 2010

Other

Other240th ACS National Meeting and Exposition
CountryUnited States
CityBoston, MA
Period8/22/108/26/10

Fingerprint

Photosynthesis
Catalysts
Water
Photosystem II Protein Complex
Chemical reactions
Hydrogen
Enzymes
Activation energy
Oxygen
Atoms
Oxidation
Molecules

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Swiegers, G. F., Dismukes, G. C., Spiccia, L., Brimblecombe, R., Koo, A., Chen, J., & Wallace, G. G. (2010). Catalytic solar water splitting inspired by photosynthesis. homogeneous catalysts with a Mechanical ("Machine-like") action. In ACS National Meeting Book of Abstracts

Catalytic solar water splitting inspired by photosynthesis. homogeneous catalysts with a Mechanical ("Machine-like") action. / Swiegers, Gerhard F.; Dismukes, G Charles; Spiccia, Leone; Brimblecombe, Robin; Koo, Annette; Chen, Jun; Wallace, Gordon G.

ACS National Meeting Book of Abstracts. 2010.

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

Swiegers, GF, Dismukes, GC, Spiccia, L, Brimblecombe, R, Koo, A, Chen, J & Wallace, GG 2010, Catalytic solar water splitting inspired by photosynthesis. homogeneous catalysts with a Mechanical ("Machine-like") action. in ACS National Meeting Book of Abstracts. 240th ACS National Meeting and Exposition, Boston, MA, United States, 8/22/10.
Swiegers GF, Dismukes GC, Spiccia L, Brimblecombe R, Koo A, Chen J et al. Catalytic solar water splitting inspired by photosynthesis. homogeneous catalysts with a Mechanical ("Machine-like") action. In ACS National Meeting Book of Abstracts. 2010
Swiegers, Gerhard F. ; Dismukes, G Charles ; Spiccia, Leone ; Brimblecombe, Robin ; Koo, Annette ; Chen, Jun ; Wallace, Gordon G. / Catalytic solar water splitting inspired by photosynthesis. homogeneous catalysts with a Mechanical ("Machine-like") action. ACS National Meeting Book of Abstracts. 2010.
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AU - Chen, Jun

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