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FexNi9-xS8 (x = 3-6) as Potential Photocatalysts for Solar- Driven Hydrogen Production?

Title data

Tetzlaff, David ; Simon, Christopher ; Achilleos, Demetra S. ; Smialkowski, Mathias ; junge Puring, Kai ; Blößer, André ; Piontek, Stefan ; Siegmund, Daniel ; Reisner, Erwin ; Marschall, Roland ; Kasap, Hatice ; Apfel, Ulf-Peter:
FexNi9-xS8 (x = 3-6) as Potential Photocatalysts for Solar- Driven Hydrogen Production?
In: Faraday Discussions. (2018) .
ISSN 1364-5498
DOI: https://doi.org/10.1039/C8FD00173A

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The efficient reduction of protons by non-noble metals under mild conditions is a challenge for our modern society. Nature utilises hydrogenases, enzymatic machineries that comprise iron- and nickel- containing active sites, to perform the conversion of protons to hydrogen. We herein report a straightforward synthetic pathway towards well-defined particles of the bio-inspired material FexNi9-xS8, a structural and functional analogue of hydrogenases metal sulfur clusters. Moreover, the potential of pentlandite to serve as photocatalysts for solar-driven H2-production is assessed for the first time. The FexNi9-xS8 materials are visible light responsive (band gaps between 2.02 and 2.49 eV, depending on the pentlandites Fe : Ni content) and display a conduction band energy close to the thermodynamic potential for proton reduction. Despite the limited driving force, a modest activity for photocatalytic H2 has been observed. Our observations show the potential for the future development of pentlandites as photocatalysts. Our work provides a basis to explore powerful synergies between biomimetic chemistry and material design to unlock novel applications in solar energy conversion.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 20 Dec 2018 08:17
Last Modified: 20 Dec 2018 08:17
URI: https://eref.uni-bayreuth.de/id/eprint/46752