期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 24, 期 69, 页码 18393-18397出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201801169
关键词
hydrogen; molecular electrochemistry; semiconductors; solar fuels; surface chemistry
资金
- Japan Society for the Promotion of Science (JSPS)
- Christian Doppler Research Association (Austrian Federal Ministry of Science, Research, and Economy)
- Christian Doppler Research Association (National Foundation for Research, Technology and Development)
- OMV group
- EPSRC
- JSPS [16H02417, 15H05494]
- EPSRC [1800449] Funding Source: UKRI
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 H-2 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.
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