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High-Performance Bioassisted Nanophotocatalyst for Hydrogen Production
journal contribution
posted on 2013-07-10, 00:00 authored by Shankar Balasubramanian, Peng Wang, Richard D. Schaller, Tijana Rajh, Elena A. RozhkovaNanophotocatalysis is one of the
potentially efficient ways of
capturing and storing solar energy. Biological energy systems that
are intrinsically nanoscaled can be employed as building blocks for
engineering nanobio-photocatalysts with tunable properties. Here,
we report upon the application of light harvesting proton pump bacteriorhodopsin
(bR) assembled on Pt/TiO2 nanocatalyst for visible light-driven
hydrogen generation. The hybrid system produces 5275 μmole of
H2 (μmole protein)−1 h–1 at pH 7 in the presence of methanol as a sacrificial electron donor
under white light. Photoelectrochemical and transient absorption studies
indicate efficient charge transfer between bR protein molecules and
TiO2 nanoparticles.
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absorption studiesPtpresencegenerationpH 7bR protein moleculestunable propertiesbuilding blockslight harvesting protonbacteriorhodopsinapplicationmethanolelectron donorBioassistedcharge transferBiological energy systemsTiO 2 nanoparticles5275 μ molenanoscaledPhotoelectrochemicalNanophotocatalystnanocatalystHydrogen ProductionNanophotocatalysis
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