• DOI:10.1002/chem.201801169
• Corpus ID: 21664985

La5Ti2Cu0.9Ag0.1S5O7 Modified with a Molecular Ni Catalyst for Photoelectrochemical H2 Generation

@article{Rosser2018La5Ti2Cu09Ag01S5O7MW,
  title={La5Ti2Cu0.9Ag0.1S5O7 Modified with a Molecular Ni Catalyst for Photoelectrochemical H2 Generation},
  author={Timothy E. Rosser and Takashi Hisatomi and Song Sun and Daniel Ant{\'o}n-Garc{\'i}a and Tsutomu Minegishi and Erwin Reisner and Kazunari Domen},
  journal={Chemistry (Weinheim an Der Bergstrasse, Germany)},
  year={2018},
  volume={24},
  pages={18393 - 18397}
}

• Timothy E. Rosser, T. Hisatomi, +4 authors K. Domen
• Published 6 June 2018
• Chemistry
• Chemistry (Weinheim an Der Bergstrasse, Germany)

Abstract The stable and efficient integration of molecular catalysts into p‐type semiconductor materials is a contemporary challenge in photoelectrochemical fuel synthesis. Here, we report the combination of a phosphonated molecular Ni catalyst with a TiO2‐coated La5Ti2Cu0.9Ag0.1S5O7 photocathode for visible light driven H2 production. This hybrid assembly provides a positive onset potential, large photocurrents, and high Faradaic yield for more than three hours. A decisive feature of the hybrid electrode is the TiO2 interlayer, which stabilizes the oxysulfide semiconductor and allows for robust attachment of the phosphonated molecular catalyst. This demonstration of an oxysulfide‐molecular catalyst photocathode provides a novel platform for integrating molecular catalysts into photocathodes and the large photovoltage of the presented system makes it ideal for pairing with photoanodes.