Extended Data Fig. 8: SEM and TEM images of R-1.
From: Multi-heteroatom-doped carbon from waste-yeast biomass for sustained water splitting
a, SEM image. b, TEM image of carbonized individual yeast cells. c, HRTEM image taken from the top edge of the carbonized individual yeast cells in (b). Inset shows the particle size distribution of RuNPs. d, AC-HAADF-STEM image showing the presence of single atoms and NPs in R-1. e, High-angle-annular-dark-field (HAADF) image and the corresponding energy-dispersive X-ray spectroscopy (EDS) elemental mapping images show that the sample contains C, Ru, N, P and S. Scale bars in (e): 1 µm. When we use 35 mg Ru precursor, the single atoms (SAs) are easily detected.
