Properties of colloids by Particular

Particular produces nanoparticles from materials like

  • pure gold, silver, platinum, palladium, iron, copper, or titanium (ignoble metals being subject to oxidization in some media),
  • alloys such as nickel-titanium, gold-silver, or platinum-iridium,
  • hard ceramics such as tungsten carbide, alpha-corundum, or yttria-stabilized tetragonal zirconia

... dispersed in water or organic solvents like acetone.

The nanoparticles are ablated from solid state targets (plates, foils, wires) with the required purity or stoichiometry.

The average particle size is in the range of 10-20 nm. With a polydispersity index below 0.3, colloids by Particular are hydrodynamically monodisperse according to ISO 13321.

The high adsorption efficiency of our nanoparticles (see picture on the right) demonstrates their large surface activity, as they can be generated without chemical ligands - a decisive advantage for nanomaterial applications e.g. in biotechnology or catalysis.

The stability of our colloids typically lasts for at least 2 months (in acetone for 1 year) if the bottle is kept closed. Zeta potentials have typical values between -40 and -90 mV and thus demonstrate a superior particle charge. The typical mechanism of stabilization is thus electrostatic (if required, even without any additives). Alternatively, electrosterical or sterical stabilization is available.

Typical concentrations of the colloids are around 10 to 100 mg/l, even 1 g/l is possible. Dispersions with concentrations in the percent range are only achievable by sterical stabilization.

Available lot sizes can reach the liter or gram scale. For typical concentrations, Particular has production capacities of up to 100 liters per week. For higher concentrations, a respective up-scaling is possible.

Please download our nanoparticle catalogue and our order sheet or contact us to discuss your individual requirements.