2026-04-16T09:40:36Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2332872916 2026-04-03T06:00:13.398Z

4.2 EI 10.15151/ESRF-ES-2332872916 Marc WIDENMEYER Marc Widenmeyer 0000-0003-4746-7030 Margarida BARROSO Margarida Barroso Andrea TRAPLETTI Andrea Trapletti 0009-0006-1482-8134 Marc WIDENMEYER Marc Widenmeyer 0000-0003-4746-7030 Margarida BARROSO Margarida Barroso Mika SCHEFFE Mika Scheffe Marco SCAVINI Marco Scavini Mika SCHEFFE Mika Scheffe MATTHEW CHAMBERS Matthew Chambers 0000-0002-7893-9603 Marco SCAVINI Marco Scavini Andrea TRAPLETTI Andrea Trapletti 0009-0006-1482-8134 Example Institute 2029 Data from large facility measurement 2026-04-01T06:00:00Z/2026-04-03T06:00:00Z 2026-04-03T06:00:00Z I CC-BY-4.0 Anionic substitution in perovskites is less investigated than cationic substitution to tune the physical properties, as the specific local arrangement of the anions has a major effect on them. Hence, we are investigating different titanium-based perovskite-type oxynitrides due to their optical bandgaps in the visible light range making them interesting as pigments and photo(electro)catalysts for pollutant degradation and oxygen evolution reaction from aqueous solutions. For perovskite-type oxides there is a linear correlation between lattice strain and resulting bandgap due to the homogeneous anionic sublattice, while the mixed anionic sublattice of respective oxynitrides causes a priori unknown effect on the bandgap. We are proposing to study a series of titanium-based oxynitrides ATi(O,N)3 with varying lattice distortion from A-site cations and/or N content, by a combination of average and local structure analysis and correlate these results with the bandgaps.