Stable hydrosol prepared by deaggregation from laser synthesis nanodiamond

The new applications of nanodiamond in biology and nuclear physics require the use of products with a low content of impurities. One of the possible methods for obtaining a high-purity nanodiamond is the recently developed laser synthesis method. The aim of this work was to study the state of aggregation of laser synthesis nanodiamond particles in aqueous suspensions and to test the possibility of deaggregation of laser nanodiamond. The process of deaggregation of a laser synthesis nanodiamond is investigated. It was shown that the previously described process of deaggregation by milling with baking soda and the usual process of deaggregation give almost the same results. A solid phase from a colloidal solution of a laser synthesis nanodiamond has been isolated and investigated. The low content of impurities in the studied product was confirmed (less than 0.1% at.), the Raman, IR, and EPR spectra were studied.