Single-nanoparticle measurements of charge transport in SrTiO3:Rh and BiVO4 photocatalysts for Z-scheme water splitting

Brian Zutter; Akihiko Kudo; Rohini Bala Chandran; Daniel V. Esposito; Shane Ardo; Alec T. Talin

doi:10.1117/12.2677830

5 October 2023 Single-nanoparticle measurements of charge transport in SrTiO₃:Rh and BiVO₄ photocatalysts for Z-scheme water splitting

Brian Zutter, Akihiko Kudo, Rohini Bala Chandran, Daniel V. Esposito, Shane Ardo, Alec T. Talin

Author Affiliations +

Proceedings Volume PC12651, Low-Dimensional Materials and Devices 2023; PC126510Q (2023) https://doi.org/10.1117/12.2677830
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Solar-powered water splitting using nanoparticle photocatalyst suspensions is a promising route to a clean hydrogen economy. A key step in the water-splitting process is the transport of photo-excited electrons and holes to the photocatalyst surface, where they undergo redox reactions. Here we characterize charge transport in individual SrTiO3:Rh and BiVO4 nanoparticles using a nanoprobe within a scanning electron microscope, and directly map photocarrier diffusion lengths with electron-beam induced current. We find that performance in this system is limited by poor e-h transport within the hydrogen-evolving SrTiO3:Rh nanoparticles.

Conference Presentation

Citation Download Citation

Brian Zutter, Akihiko Kudo, Rohini Bala Chandran, Daniel V. Esposito, Shane Ardo, and Alec T. Talin "Single-nanoparticle measurements of charge transport in SrTiO₃:Rh and BiVO₄ photocatalysts for Z-scheme water splitting", Proc. SPIE PC12651, Low-Dimensional Materials and Devices 2023, PC126510Q (5 October 2023); https://doi.org/10.1117/12.2677830

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