TiO2 Supported Photobiocatalytic Systems
Victor Nadtochenko, Vitaliy Nikandrov, Yanina Borisova, Galina Nizova, Arseny Aybush, Andrei Kostrov, Igor Shagadeev, Eugeniy Lukashov, Fedor Gostev, Ivan Shelaev, Mamadou Traore, Andrei Kanaev, Vladimir Shuvalov and Aleksei Semenov
Affiliation: NN Semenov Institute of Chemical Physics RAS, Kosigin str. 4, Moscow, Russia, 119071.
Keywords: Enzymes, hydrogen production, photosynthesis, plasmons, photocatalysis, solar energy conversion, titanium dioxide
We report on a performance of the photocatalytic solar energy convertors based on mesoporous TiO2 films with
immobilized enzymes and membrane pigment-protein complexes of bacterial reaction centers Rhodobacter sphaeroides
and Synechocystis sp. PCC 6803 photosystem-I (PS I) using our patented immobilization technique. These semiconductor-
enzymes-pigment-protein systems functioned as both the light-harvester and charge separator in photocatalytic and solar
cells self-assembled on nanostructured semiconductors. We described our recent patents on different possibilities of
electrons photogeneration in the TiO2 conduction band (c.b.) as well as possibilities to use the potential of e- in the TiO2
c.b for the catalytic reduction of H+ to molecular hydrogen and for reduction of NAD+ (NADP+) to NADH(NADPH) by
immobilized enzymes. We also report on femtosecond dynamics of charge separation in PS I with relation to these photocatalytic
solar energy convertors.
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