Fig. 1
From: Unusual synergistic effect in layered Ruddlesden−Popper oxide enables ultrafast hydrogen evolution
Bulk structure characterization. XRD patterns of a RuO2, b SrRuO3, and c Sr2RuO4. Insert shows the local crystal structure of respective oxide. Color code: Sr (yellow), Ru (blue), and O (red and orange). d Schematic presentation of the layered RP structure of Sr2RuO4. e SAED pattern and the corresponding HRTEM images (f) along the [010] zone axes for Sr2RuO4. Insert is the FFT. g DFT calculation of the DOS of Sr2RuO4. Scale bar in (e) is 5 nm−1 and in (f) is 2 nm
