Fig. 3: The electron state characterization of Pt1/Nb2O5-Ov.

a The XANES spectra at the Pt L3-edge. b The XPS spectra of Nb 3d and c O1s of Pt1/Nb2O5-Ov and Nb2O5.
a The XANES spectra at the Pt L3-edge. b The XPS spectra of Nb 3d and c O1s of Pt1/Nb2O5-Ov and Nb2O5.