Tuning light-driven water oxidation efficiency of molybdenum-doped \(BiVO_{4}\) by means of multicomposite catalysts containing nickel, iron, and chromium oxides
- Mo-doped \(BiVO_{4}\) has emerged as a promising material for photoelectrodes for photoelectrochemical water splitting, however, still shows a limited efficiency for light-driven water oxidation. We present the influence of an oxygen-evolution catalyst composed of Ni, Fe, and Cr oxides on the activity of Mo:\(BiVO_{4}\) photoanodes. The photoanodes are prepared by spray-coating, enabling compositional and thickness gradients of the incorporated catalyst. Two different configurations are evaluated, namely with the catalyst embedded into the Mo:\(BiVO_{4}\) film or deposited on top of it. Both configurations provide a significantly different impact on the photoelectrocatalytic efficiency. Structural characterisation of the materials by means of SEM, TEM and XRD as well as the photoelectrocatalytic activity investigated by means of an optical scanning droplet cell and \(\textit {in situ}\) detection of oxygen using scanning photoelectrochemical microscopy are presented.
| Author: | Olga A. KrysiakORCiDGND, João Ricardo Coelho JunqueiraORCiDGND, Felipe ConzueloORCiDGND, Tim BobrowskiORCiDGND, Patrick WildeORCiDGND, Andrzej WysmolekORCiDGND, Wolfgang SchuhmannORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-89060 |
| DOI: | https://doi.org/10.1002/cplu.201900701 |
| Parent Title (English): | ChemPlusChem |
| Publisher: | Wiley-VCH |
| Place of publication: | Weinheim |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2022/05/10 |
| Date of first Publication: | 2020/01/30 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | bismuth vanadate; oxygen evolution; photoelectrocatalysis; transition metal oxides; water splitting |
| Volume: | 85 |
| Issue: | 2 |
| First Page: | 327 |
| Last Page: | 333 |
| Note: | Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich. |
| Institutes/Facilities: | Lehrstuhl für Analytische Chemie und Zentrum für Elektrochemie |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Chemie und Biochemie |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
