Print Email Facebook Twitter Carbon Nanotube-Graphitic Carbon Nitride Hybrid Films for Flavoenzyme-Catalyzed Photoelectrochemical Cells Title Carbon Nanotube-Graphitic Carbon Nitride Hybrid Films for Flavoenzyme-Catalyzed Photoelectrochemical Cells Author Son, Eun Jin (Korea Advanced Institute of Science and Technology) Lee, Sahng Ha (Korea Advanced Institute of Science and Technology) Kuk, Su Keun (Korea Advanced Institute of Science and Technology) Pesic, M. (TU Delft BT/Biocatalysis) Choi, Da Som (Korea Advanced Institute of Science and Technology) Ko, Jong Wan (Korea Advanced Institute of Science and Technology) Kim, Kayoung (Korea Advanced Institute of Science and Technology) Hollmann, F. (TU Delft BT/Biocatalysis) Park, Chan Beum (Korea Advanced Institute of Science and Technology) Date 2017 Abstract In green plants, solar-powered electrons are transferred through sophistically arranged photosystems and are subsequently channelled into the Calvin cycle to generate chemical energy. Inspired by the natural photosynthetic scheme, a photoelectrochemical cell (PEC) is constructed configured with protonated graphitic carbon nitride (p-g-C3N4) and carbon nanotube hybrid (CNT/p-g-C3N4) film cathode, and FeOOH-deposited bismuth vanadate (FeOOH/BiVO4) photoanode for the production of industrially useful chiral alkanes using an old yellow enzyme homologue from Thermus scotoductus (TsOYE). In the biocatalytic PEC platform, photoexcited electrons provided by the FeOOH/BiVO4 photoanode are transferred to the robust and self-standing CNT/p-g-C3N4 hybrid film that electrocatalytically reduces flavin mononucleotide (FMN) mediator. The p-g-C3N4 promotes a two-electron reduction of FMN coupled with an accelerated electron transfer by the conductive CNT network. The reduced FMN subsequently delivers the electrons to TsOYE for the highly enantioselective conversion of ketoisophorone to (R)-levodione. Under light illumination (>420 nm) and external bias, (R)-levodione is synthesized with the enantiomeric excess value of above 83%, not influenced by the scale of applied bias, simultaneously exhibiting stable and high current efficiency. The results suggest that the biocatalytic PEC made up of economical materials can selectively synthesize high-value organic chemicals using water as an electron donor. Subject Artificial photosynthesisBiocatalysisCarbon nanotubesGraphitic carbon nitridePhotoelectrochemical cells To reference this document use: http://resolver.tudelft.nl/uuid:edcda71e-15c0-406d-ae97-d8667e8fe18b DOI https://doi.org/10.1002/adfm.201705232 Embargo date 2018-12-07 ISSN 1616-301X Source Advanced Functional Materials Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2017 Eun Jin Son, Sahng Ha Lee, Su Keun Kuk, M. Pesic, Da Som Choi, Jong Wan Ko, Kayoung Kim, F. Hollmann, Chan Beum Park Files PDF AFM_Revised_Manuscript.pdf 1.92 MB Close viewer /islandora/object/uuid:edcda71e-15c0-406d-ae97-d8667e8fe18b/datastream/OBJ/view