Dispersible Diamond Nanoparticles 50 nm ≥97%, ATOMFAIR®

How does the high density of surface hydroxyl and carboxyl groups on these 50 nm diamond nanoparticles affect their dispersion stability compared to unfunctionalized nanodiamonds?

The hydroxyl and carboxyl groups enhance dispersibility in polar media, such as water and alcohols, due to improved hydrogen bonding and electrostatic stabilization. The product is explicitly described as 'dispersible' with a purity of ≥97% and rich surface functionalization, enabling more stable suspensions than unfunctionalized nanodiamonds of the same size. However, the exact dispersion stability depends on the chosen solvent and sonication protocol, as the description does not specify fully optimized conditions.

The product is a research-grade inorganic nanopowder with a high density of surface hydroxyl and carboxyl groups, making it most compatible with polar protic solvents like water, ethanol, and isopropanol. The description does not list specific incompatible solvents, but the surface chemistry suggests poor dispersibility in purely nonpolar, hydrophobic media (e.g., hexane, toluene) without additional surface modification. Users should test small-scale stability before full incorporation into organic or nonpolar workflows.

What specific handling and storage precautions are required to maintain the ≥97% purity and prevent contamination or agglomeration of this 50 nm nanodiamond powder?

Store the nanopowder in a sealed, moisture-proof container under inert atmosphere (e.g., argon or nitrogen) to avoid adsorption of contaminants or moisture, which can reduce the active hydroxyl/carboxyl surface groups. Handle in a clean, antistatic environment with appropriate PPE to prevent inhalation and cross-contamination, as the fine 50 nm particles are easily airborne. The description confirms a 1 g package size, suggesting minimal headspace to minimize oxidation, but systematic storage recommendations are not provided beyond standard research-grade nanopowder best practices.