Basic properties of hydrogenated detonation nanodiamonds

The paper is devoted to basic properties study of hydrogenated detonation nanodiamonds. It is shown that a powder of detonation nanodiamond annealed in molecular hydrogen contains carbonate and bicarbonate ions. These anions may be replaced for other anions during the interaction of the nanodiamond particles with aqueous solutions of salts and acids. The anion replacement is confirmed by Infrared and Energy dispersive X-ray spectroscopies. The presence of carbonate and bicarbonate ions indicates that the hydrogenated diamond nanoparticles have a positive surface charge in the powder according surface transport doping. Potentiometric titration and nitrogen adsorption methods have been used to calculate the surface charge of the particles.