Carbon/metal nanoparticles found in the carbon coal

High resolution transmission electron microscopy images of carbon/metal nanoparticles found in carbon coal: a), b) fullerenes; b) onion-like carbon shells; c) inset is FTT image taken from the crystalline metal core, d) plot profile showing the distance of 0.23 nm between atoms in the onion-like carbon shell, e) plot profile showing the distance of 0.20 nm between atoms in the crystalline metal core.