Fig. 3: XPS and PDOS characterizations of the samples.
From: Rhodium nanocrystals on porous graphdiyne for electrocatalytic hydrogen evolution from saline water
a Schematic representation of the depth profiling experiments. The sets of b, c Rh 3d obtained from different samples and d C 1 s XPS spectra of Rh/GDY measured during the depth profiling experiments. The high-resolution e, C 1 s, f Rh 3d XPS spectra of the catalysts. g The differential charge density of Rh/GDY. Image created with VESTA software. h Projected density of state (PDOS) of Rh/GDY and Rh. i Electron energy-loss spectroscopy (EELS) of carbon and rhodium elements in the GDY and Rh/GDY.
