La5 Ti2 Cu0.9 Ag0.1 S5 O7 Modified with a Molecular Ni Catalyst for Photoelectrochemical H2 Generation.
Chemistry (Weinheim an der Bergstrasse, Germany)
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Rosser, T. E., Hisatomi, T., Sun, S., Antón-García, D., Minegishi, T., Reisner, E., & Domen, K. (2018). La5 Ti2 Cu0.9 Ag0.1 S5 O7 Modified with a Molecular Ni Catalyst for Photoelectrochemical H2 Generation.. Chemistry (Weinheim an der Bergstrasse, Germany), 24 (69), 18393-18397. https://doi.org/10.1002/chem.201801169
The stable and efficient integration of molecular catalysts into p-type semiconductor materials is a contemporary challenge in photoelectrochemical solar 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 stabilises the oxysulfide semiconductor and allows for robust attachment of the phosphonated molecular catalyst. This first 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.
Japan Society for the Promotion of Science (JSPS); Christian Doppler Research Association (Austrian Federal Ministry of Science, Research and Economy and the National Foundation for Research, Technology and Development); OMV group; EPSRC, Grants-in-Aids for Scientific Research and for Young Scientists from JSPS
Christian Doppler Forschungsgesellschaft (unknown)
External DOI: https://doi.org/10.1002/chem.201801169
This record's URL: https://www.repository.cam.ac.uk/handle/1810/283233
Attribution 4.0 International
Licence URL: http://creativecommons.org/licenses/by/4.0/
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