Fig. 2: Valence state and atomic coordination analysis of TVCNMWCA-HEO.
From: Sustainable photocatalytic hydrogen peroxide production over octonary high-entropy oxide
a The Ti K-edge XANES spectra of the TVCNMWCA-HEO and the corresponding reference materials (Ti foil, TiO2 and Ti2O3). b The V K-edge XANES spectra of the TVCNMWCA-HEO and the corresponding reference materials (V foil, VO2, V2O5). c The Cr K-edge XANES spectra of the TVCNMWCA-HEO and the corresponding reference materials (Cr foil, CrO2, and Cr2O3). d The Nb K-edge XANES spectra of the TVCNMWCA-HEO and the corresponding reference materials (Nb foil, NbO2, and Nb2O5). e The FT-EXAFS spectra of Ti, V, Cr, and Nb K-edge of the TVCNMWCA-HEO and FT-EXAFS spectra of Ti foil, TiO2, and Ti2O3. f The O 1 s XPS spectra of TVCNMWCA-HEO. The inset is the EPR spectra. These source data are provided as a Source Data file.
