Regularities of Chlorination of the Detonation NanoDiamond Surface

Abstract

The published and the authors’ own data on the methods of chlorination of the surface of diamond micropowders are critically assessed. The features of different methods of chlorination of detonation nanodiamond (DND) are compared; the optimum process conditions are revealed. The method of gas-phase chlorination with molecular chlorine at elevated temperatures is preferable when using DND in biomedical applications; this method also helps lower the concentration of metal impurities. The use of thionyl chloride and sulfuryl chloride results in the contamination of DND-Cl samples with sulfur. It is shown that the DND-Cl samples have satisfactory hydrolytic stability.