Composition comprising nanoparticles and a method for the preparation thereof
The present invention relates to a composition comprising nanoparticles stabilized by an at least partially deprotonated biopolymer and a method for the preparation thereof.
1. Solution comprising metal and/or metal oxide nanoparticles stabilized by an at least partially deprotonated biopolymer, wherein the biopolymer is natural starch consisting of both linear amylose and branched amylopectin, wherein the amount of amylopectin is in a range of about 70 to 80% of the starch; and concentration of the metal and/or metal oxide is in a range from 100 ppm to 2000 ppm in the composition.
2. Solution according to claim 1 , wherein the diameter of the nanoparticles is in a range from 1 to 25 nm.
3. Solution according to claim 1 , wherein the nanoparticles are Au, Ag, Pd, Pt, Rh, Ir, Cu, Co, Ni, Fe oxides and/or ZnO nanoparticles.
4. Solution comprising metal and/or metal oxide nanoparticles stabilized by an at least partially deprotonated biopolymer, wherein the biopolymer is natural starch consisting of both linear amylose and branched amylopectin, wherein the amount of amylopectin is in a range of about 70 to 80% of the starch; and concentration of the metal and/or metal oxide is in a range from 100 ppm to 2000 ppm in the composition, wherein the diameter of 95% of the nanoparticles is in a range from 4 to 8 nm, and the remaining 5% does not exceed 15 nm.