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URN to cite this document: urn:nbn:de:bvb:703-epub-8952-5
Title data
Kaulbersch, Julian ; McGuigan, Scott ; Timm, Jana ; Maggard, Paul ; Marschall, Roland:
Photocatalytic Activity and Stability of Carbon Nitride‐Pyrite Composites.
In: ChemPhotoChem.
Vol. 9
(2025)
Issue 3
.
- e202400343.
ISSN 2367-0932
DOI der Verlagsversion: https://doi.org/10.1002/cptc.202400343
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Project information
| Project title: |
Project's official title Project's id Elektro- und Photokatalytische N2 Umwandlung mit Übergangsmetall-Chalkogeniden an 2D- und 3D-strukturierten Elektroden (NI-CONSTRUCT) 501901537 Open Access Publizieren No information |
|---|---|
| Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract
In photocatalysis, the photoabsorber plays a crucial role in the reaction. The most important parameters are stability, cost and optical band gap. In this work, a prominent class of absorbers, namely carbon nitrides (CN), has been investigated. In the literature, CN is most often described as stable, although photodegradation has been observed. In order to retain the beneficial properties of CN while improving stability, a crystalline phase poly(triazine imide) (PTI) of carbon nitride was investigated and compared to polymeric CN in photocatalytic hydrogen generation experiments. In order to improve the charge separation for the photoinduced hydrogen evolution reaction, pyrite (FeS2) was used as a surface co-catalyst with a loading of 1, 5 and 10 wt %. At the same time, any photodegradation products in solution were investigated by ion chromatography. Interestingly, PTI shows hardly any photocorrosion compared to defective carbon nitride, indicating its higher photostability in hydrogen evolution experiments. However, FeS2 produces ammonium as a degradation product when synthesised from nitrogen-containing precursors. When made from nitrogen-free precursors, FeS2 together with photostable PTI releases little ammonia, making it a photostable, earth-abundant composite for photocatalytic hydrogen generation.
Further data
| Item Type: | Article in a journal |
|---|---|
| DDC Subjects: | 500 Science > 540 Chemistry |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry III - Sustainable Materials for Solar Energy Conversion Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry III - Sustainable Materials for Solar Energy Conversion > Chair Physical Chemistry III - Sustainable Materials for Solar Energy Conversion - Univ.-Prof. Dr. Roland Marschall Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-8952-5 |
| Date Deposited: | 03 Mar 2026 14:05 |
| Last Modified: | 03 Mar 2026 14:06 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/8952 |
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