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A Novel Synthesis Yielding Macroporous CaFe₂O₄ Sponges for Solar Energy Conversion

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005059
URN to cite this document: urn:nbn:de:bvb:703-epub-5059-9

Title data

Blößer, André ; Timm, Jana ; Kurz, Hannah ; Milius, Wolfgang ; Hayama, Shusaku ; Breu, Josef ; Weber, Birgit ; Marschall, Roland:
A Novel Synthesis Yielding Macroporous CaFe₂O₄ Sponges for Solar Energy Conversion.
In: Solar RRL. Vol. 4 (2020) Issue 8 . - No. 1900570.
ISSN 2367-198X
DOI der Verlagsversion: https://doi.org/10.1002/solr.201900570

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Name: solr.201900570.pdf
Version: Published Version
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Project information

Project financing: Bundesministerium für Wirtschaft und Technologie

Abstract

Phase-pure and highly crystalline CaFe2O4 with sponge-like macropore structure was synthesized for the first time via facile solution-based microwave reaction and subsequent short thermal treatment. The formation mechanism of the orthorhombic phase (Pnma) and the pore network was investigated in detail and reveals a complex formation of this p-type semiconductor. SQUID magnetometry and Mössbauer spectroscopy confirm the phase changes by altered magnetic properties. Furthermore, the optical and photoelectrochemical properties of the material were investigated. The material has a band gap of 1.9 eV and sufficient band positions for water splitting. Valence-to-core X-ray emission spectroscopy was used to support the band positions obtained from Mott-Schottky analysis. Photocathodes prepared from macroporous CaFe2O4 generate photocurrents under illumination with light of up to 600 nm. This article is protected by copyright.

Further data

Item Type: Article in a journal
Keywords: CaFe2O4; macropores; photoelectrochemistry; valence-to-core emission spectroscopy; water splitting
DDC Subjects: 500 Science > 540 Chemistry
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5059-9
Date Deposited: 15 Sep 2020 09:04
Last Modified: 15 Sep 2020 09:04
URI: https://epub.uni-bayreuth.de/id/eprint/5059

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