Print Email Facebook Twitter Photoelectrocatalytic N2 fixation and C-H oxyfunctionalization driven by H2O oxidation Title Photoelectrocatalytic N2 fixation and C-H oxyfunctionalization driven by H2O oxidation Author Kim, Chang Hyun (Korea Advanced Institute of Science and Technology) Kim, Jinhyun (Korea Advanced Institute of Science and Technology; University of California) Hollmann, F. (TU Delft BT/Biocatalysis) Park, Chan Beum (Korea Advanced Institute of Science and Technology) Date 2023 Abstract Solar-driven N2 fixation offers a green alternative to the highly energy-intensive Haber-Bosch process that releases more than 300 million metric tons of CO2 annually to form NH3. However, N2-reducing photoelectrochemical (PEC) studies have not elucidated how an oxidation reaction affects the N2 reduction reaction (NRR). Here, we report a bias-free PEC platform for N2 reduction to NH3 and H2O oxidation to O2 and H2O2. Under solar light, the molybdenum-doped bismuth vanadate-based photoanodes extract electrons from H2O and transfer them to the silicon photovoltaic-wired hematite photocathode. The light-absorbing cathode receives the electrons to drive the NRR, which is influenced by the H2O oxidation reaction's conditions. Furthermore, the integration of PEC NRR with H2O2-dependent biocatalytic oxyfunctionalization achieves simultaneous synthesis of valuable chemicals on both electrodes. This work presents the first example of a PEC NRR platform coupled with H2O oxidation and H2O2-dependent oxygenation for unbiased chemical synthesis using N2, H2O, and sunlight. Subject BiocatalysisNitrogen fixationOxygenationPhotoelectrocatalysisSolar fuel To reference this document use: http://resolver.tudelft.nl/uuid:d529a28c-f087-418e-8bd1-9128ee678112 DOI https://doi.org/10.1016/j.apcatb.2023.122925 Embargo date 2023-11-05 ISSN 0926-3373 Source Applied Catalysis B: Environmental, 336 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Chang Hyun Kim, Jinhyun Kim, F. Hollmann, Chan Beum Park Files PDF 1_s2.0_S0926337323005684_main.pdf 5.21 MB Close viewer /islandora/object/uuid:d529a28c-f087-418e-8bd1-9128ee678112/datastream/OBJ/view