Speaker
Prof.
Stenbjörn Styring
(Photochemistry and Molecular Science, Department for Chemistry – Ångström laboratory. The Ångström Laboratory, Uppsala University, Sweden)
Description
The paper will discuss the need for Solar Fuels and overview the different scientific paths to achieve this goal. Visions and strategies in research in the Swedish Consortium for Artificial Photosynthesis and the European network SOLAR-H2 will be covered. Our research aims for the production of hydrogen from solar energy and water. Water shall be oxidized in a catalytic process using solar energy. The electrons from water shall be used in a second process to reduce protons to hydrogen. We apply a biomimetic approach where we copy key principles from natural enzymes that accomplish partial reactions. Water oxidation using solar energy is carried out by Photosystem II using a catalytic Mn4 complex. In our chemistry we also develop Mn-based catalytic systems and use a photoactive Ru-center to drive oxidative electron transfer. I will describe our recent research on light driven, multi-electron transfer in these Mn systems and a recent water oxidizing catalyst based on a cobalt nano-particle. To accomplish reduction of protons to hydrogen we mimic the di-iron center in hydrogenase enzymes. Some recent results on these biomimetic Fe-Fe complexes will be described.
Magnuson, A., Anderlund, M., Johansson, O., Lindblad, P., Lomoth, R., Polivka, T., Ott, S., Stensjö, K., Styring, S., Sundström, V. and Hammarström L. (2009) Biomimetic and Microbial Approaches to Solar Fuel Generation.
Accounts Chemical Res., 42, 1899-1909
Ott, S., Styring, S., Hammarström, L., and Johansson, O. (2010) Towards Solar Fuels using a biomimetic Approach. Progress in the Swedish Consortium for Artificial Photosynthesis. In “Energy production and storage”; Inorganic Chemical Strategies for a Warming World, edited by Robert Crabtree, Chichester, UK: John Wiley & Sons, Ltd, pp 199-227
Shevchenko, D., Anderlund, M. F., Thapper, A. and Styring, S. (2011) Photo-driven water oxidation with visible light using a cobalt containing catalyst
Energy and Environmental Science, 4, 1284-1287
Risch, M., Shevchenko, D., Anderlund, M.F., Styring, S., Heidkamp, J., Lange, K.M., Thapper, A. and Zaharieva, I. (2012) Atomic structure of cobalt-oxide nanoparticles active in light-driven catalysis of water oxidation
Intl J.Hydr. Research, 37; 8878-8888
S. Kaur-Ghumaan, L. Schwartz, R. Lomoth, M. Stein, S. Ott
Catalytic (2012) Hydrogen Evolution from Mononuclear Ferrous Carbonyl Complexes as Minimal Functional Models of the [FeFe] Hydrogenase Active Site
Angew. Chem. Int. Ed. 49, 8033-8036.
Primary author
Prof.
Stenbjörn Styring
(Photochemistry and Molecular Science, Department for Chemistry – Ångström laboratory. The Ångström Laboratory, Uppsala University, Sweden)
