Using Surface Amide Couplings to Assemble Photocathodes for Solar Fuel Production Applications

Kelly L. Materna, Noémie Lalaoui, Joseph A. Laureanti, Aaron P. Walsh, Belinda Pettersson Rimgard, Reiner Lomoth, Anders Thapper, Sascha Ott, Wendy J. Shaw, Haining Tian, Leif Hammarström

Research output: Contribution to journalArticle

Abstract

A facile surface amide-coupling method was examined to attach dye and catalyst molecules to silatrane-decorated NiO electrodes. Using this method, electrodes with a push-pull dye were assembled and characterized by photoelectrochemistry and transient absorption spectroscopy. The dye-sensitized electrodes exhibited hole injection into NiO and good photoelectrochemical stability in water, highlighting the stability of the silatrane anchoring group and the amide linkage. The amide-coupling protocol was further applied to electrodes that contain a molecular proton reduction catalyst for use in photocathode architectures. Evidence for catalyst reduction was observed during photoelectrochemical measurements and via femtosecond-transient absorption spectroscopy demonstrating the possibility for application in photocathodes.

Original languageEnglish
Pages (from-to)4501-4509
Number of pages9
JournalACS Applied Materials and Interfaces
Volume12
Issue number4
DOIs
Publication statusPublished - Jan 29 2020

Keywords

  • amide coupling
  • nickel oxide
  • photocathode
  • silatrane
  • solar fuels

ASJC Scopus subject areas

  • Materials Science(all)

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    Materna, K. L., Lalaoui, N., Laureanti, J. A., Walsh, A. P., Rimgard, B. P., Lomoth, R., Thapper, A., Ott, S., Shaw, W. J., Tian, H., & Hammarström, L. (2020). Using Surface Amide Couplings to Assemble Photocathodes for Solar Fuel Production Applications. ACS Applied Materials and Interfaces, 12(4), 4501-4509. https://doi.org/10.1021/acsami.9b19003