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[½»Á÷] ²©ºóÕÐÆ¸£­Plasmonics-based Energy Harvesting for Catalysis ÒÑÓÐ9È˲ÎÓë

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ERC- Plasmonics-based Energy Harvesting for Catalysis
Many critical photochemical and photophysical processes, from photosynthesis in plants, to photocatalytic reactions, and to generation of electricity in solar cells, depend on an efficient interaction between light and matter. In order to increase, for example, the efficiency of photocatalysis, the interaction of the photocatalyst with light has to be increased. This project will pursue two lines of investigation in order to achieve this.

Firstly, the concept of light-harvesting will be exploited. Light energy can be harvested by collecting, directing and concentrating it at a reaction center, in a fashion that mimics that used by plants. Secondly, for specific types of catalysis such as noble metal nano-particle (NP) based catalysis, the plasmon light field at the metal NPs can potentially be used to enable a more efficient light-matter interaction. The applicant proposes to combine both approaches, that is to create a plasmonic antenna to funnel light to a reaction center, whilst at the same time using the plasmons generated as an efficient reaction field in catalysis.

The outcome of this timely and challenging proposal will make it possible to drastically increase activities of (photo)catalysts, enabling their efficient operation in the visible/IR region of the spectrum of sunlight or even in weak room light conditions. In order to realize the aims set out in this ambitious project, three interdisciplinary and intimately linked work packages are proposed. The first one aims at developing novel photo-induced synthetic routes for NPs, both in solution and at surfaces, as well as at arranging the NPs in effective antennae (eventually also light assisted). In a second work package, microscopy modes will be developed/implemented that allow monitoring the growth of the NPs in situ, that allow checking the quality of the arrays and that allow in situ monitoring of catalytic test reactions. The knowledge gained in WP1 and WP2 will be applied to ¡®real world¡¯ (photo)catalysts (gold NP catalysis and TiO2, respectively) in WP3. This project will thus result in new light-induced synthesis and fabrication methods of NPs; in new and/or improved microscopy modes and spectroscopic schemes in order to study the relationship between plasmonic properties and chemical reactions. Ultimately, the applicant hopes to realize a paradigm shift in the field of photo-catalysis and enable new applications in the field of plasmonics.

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