Fig. 3: Surface chemical state and coordination environment analysis of RuMo@MoOx-JH.

a Mo 3d XPS spectra of Mo@MoOx-JH and RuMo@MoOx-JH. b Ru 3p XPS spectra of RuMo@MoOx-JH. c O 1 s XPS spectra of Mo@MoOx-JH and RuMo@MoOx-JH. d Ru k-edge synchrotron-based XANES of RuMo@MoOx-JH, Ru foil and RuO2. e FT-EXAFS spectra for the Ru k-edge. f EXAFS oscillation functions of RuMo@MoOx-JH and Ru foil. g WT-EXAFS curves for Ru foil (left), RuMo@MoOx-JH (middle), and RuO2 (right). Source data for Fig. 3 are provided as a Source Data file.