Patent ID: 11383298

Abstract:
A method for preparing an anhydrous nanoparticle dispersion, comprising providing an aqueous medium comprising a surfactant and a quantity of surfactant-coated nanoparticles suspended in the aqueous medium; (i.) estimating an average particle length and an average particle diameter of the surfactant-coated nanoparticles suspended in the aqueous medium, and estimating a quantity of the surfactant-coated nanoparticles in the aqueous medium; estimating a surface area (SA) of the surfactant-coated nanoparticles in the aqueous medium based on the average particle length and the average particle diameter and the quantity of the surfactant-coated nanoparticles; adjusting a ratio of the quantity of the surfactant-coated nanoparticles to a quantity of the surfactant to a desired value to form a precursor aqueous solution; diluting the precursor aqueous solution with an organic solvent to provide a suspension of surfactant-coated nanoparticles in the solvent, and heating the suspension at about 100° C. for about 20 min to remove remaining water.