Properties Of Detonation Nanodiamonds Research Articles

Interaction of Detonation Nanodiamonds with Hispidin

Hispidin is a secondary metabolite found in numerous medicinal mushrooms that has attracted significant attention, owing to its distinct biological effects, including antioxidant, anti-inflammatory, antitumor, and cytoprotective properties. Experiments are being carried out to study the interaction of detonation nanodiamonds (DNDs) with synthetic and natural hispidin sourced from extracts of Pholiota sp. fungus. The bioluminescence method is used to determine the adsorption/ desorption properties of DNDs toward hispidin. It is found that hispidin forms strong conjugates with DNDs, and the use of various eluents does not result in a significant release of the adsorbed hispidin molecules. DND-bovine serum albumin (BSA) complex, where DNDs serve as a carrier for the protein and the latter acts as a hispidin sorbent, has been developed and applied in hispidin adsorption/desorption tests. The results support the use of the DNDs as a carrier for hispidin in medical applications. They also advocate the application of the DND-BSA complex for isolating the substance from fungal extracts.

Modification and functional properties of detonation nanodiamond

Original termination of the detonation nanodiamond (DND) was changed by active chemical media interaction. Oxidation in boiling chloric acid, by hydrogen and chlorination by carbon tetrachloride vapor was applied. FTIR, TGA, and photoluminescence techniques revealed the DND functional termination changing. At hydrogenation treatment monofunctionally of the surface demonstrated. The totality of presented results demonstrates the possibility of substantial and controlled changes in the DND functional properties, for their subsequent use in the self-organization processes, at nanocomposites preparation and for other aims.

Influence of hydrogen bonds on the colloidal and fluorescent properties of detonation nanodiamonds in water, methanol and ethanol

ABSTRACTThis paper presents the results of research of influence of hydrogen bonds with different strength on fluorescence and colloidal properties of detonation nanodiamonds with surface carboxylic groups in the solvents. It is established that the colloidal properties of detonation nanodiamonds are almost independent on hydrogen bonds strength in water, methanol and ethanol. The fluorescent properties of detonation nanodiamonds are dependent on the type of solvent: the more intensive fluorescent properties correspond to weaker hydrogen bonds in solvents.

Antioxidant Effect of Hydroxylated Diamond Nanoparticles Measured in Soybean Oil

We investigated the antioxidant properties of detonation nanodiamond modified by Fenton's reagent. Diamond nanoparticles functionalized with hydroxyl groups were examined in soybean oil; the aim of this study was to determine their antioxidant properties by examining the effect on the lipid peroxidation process. In order to form the hydroxyl groups on the surface of the detonation diamond nanoparticles, we utilized the Fenton reaction. This reaction consisted of the oxidation of the surfaces of the nanodiamonds by the reaction of Fe2+ with hydrogen peroxide (H2O2), which is a precursor of the hydroxyl radical. The oxidation reaction of nanodiamonds via Fenton's reagent is twofold, in addition to surface oxidation it is also purified from different carbon varieties. We traced the impact of the modified nanodiamonds on the oxidation process of soybean oil. In order to hasten the process of lipid peroxidation, the soybean oil was exposure to ultraviolet (UV) light with a wavelength of 250 nm. Analysis was performed before and after 3, 6, 9, 24, 48, and 72 hours of exposure to UV light. Comparing the results of pure oil and oil with the addition of functionalized powder, we noted a significant impact of the modified nanodiamond compared to nonmodified nanodiamond on the process of counteracting the rancidity of the oil. This observation was confirmed by the peroxide value, anisidine value, Totox index, and Kreis test.