Nuclear magnetic resonance spectroscopy of diamond nanoparticles produced by grinding of natural diamond by detonation synthesis before and after thermal treatment

The structure and hybridized forms of carbon of primary particles of diamond nanopowders produced by grinding a natural diamond and detonation synthesis with subsequent modifying thermal treatment have been studied by solid-state NMR spectroscopy. Differences in the composition of non-diamond carbon of the shell surrounding the diamond core of natural and synthetic nanodiamonds before and after the thermal treatment were revealed; its prospects for controlling the surface chemistry of nanodiamonds are shown.