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An Investigation of the Optical Properties and Water Splitting Potential of the Coloured Metallic Perovskites Sr1-xBaxMoO3

Title data

Hopper, H. A. ; Le, J. ; Cheng, J. ; Weller, T. ; Marschall, Roland ; Bloh, J. Z. ; Macphee, D. E. ; Folli, A. ; McLaughlin, A. C.:
An Investigation of the Optical Properties and Water Splitting Potential of the Coloured Metallic Perovskites Sr1-xBaxMoO3.
In: Journal of Solid State Chemistry. Vol. 234 (2016) . - pp. 87-92.
ISSN 0022-4596
DOI: https://doi.org/10.1016/j.jssc.2015.12.002

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The solid solution Sr1-xBaxMoO3 (x=0.00, 0.025, 0.050, 0.075, 0.100 and 1.00) has been synthesised. Rietveld refinement of X-ray diffraction data shows that all materials crystallise with cubic (Pm-3m) symmetry and that a miscibility gap exists from x=0.1–1.0. The optical properties of the metallic perovskites Sr1-xBaxMoO3 have been investigated by a combination of UV-vis spectroscopy and density functional theory (DFT). Upon increasing x from 0 to 1 in Sr1-xBaxMoO3 there is a reduction in the measured band gap from 2.20 eV to 2.07 eV. The measured band gap is attributed to the electronic transition from the Mo 4d t2g band to the eg band. The potential of SrMoO3 and BaMoO3 as water-splitting photocatalysts was explored but there was no evidence of hydrogen or oxygen evolution, even with the presence of a Pt co-catalyst.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Perovskite
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Lehrstuhl Physikalische Chemie III > Lehrstuhl Physikalische Chemie III - Univ.-Prof. Dr. Roland Marschall
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 04 Sep 2018 07:34
Last Modified: 30 Oct 2018 07:40
URI: https://eref.uni-bayreuth.de/id/eprint/45677