Patent ID: 8597609
Filing Date: 2013-12-03
Classification: B82Y,C01G,C01P,C08K

Abstract:
1. A method for the preparation of a functionalized nano size cadmium or zinc oxide or sulfide particle comprising the following steps: a. providing a ternary solvent system comprising a polar solvent, a non-polar solvent and an intermediate solvent allowing miscibility of all three components; b. providing a mixture of a transition metal salt and the ternary solvent, the transition metal salt selected from the group consisting of zinc acetate and cadmium acetate; c. providing a mixture of a suitable source of oxide or sulfide and the ternary solvent, the suitable source of oxide or sulfide selected from the group consisting of NaOH (sodium hydroxide), LiOH (lithium hydroxide), KOH (potassium hydroxide), NH d. providing a mixture of a non-polar end capping agent and the non-polar solvent, the non-polar end capping agent selected from the group consisting of 2-mercaptobenzothazole, bis-benzothiazole-2-2′-disulfide, N-oxydiethylene-2-benzothiazolesulphenamide, N-oxydiethylenethiocarbomoyl-N-oxydiethylene sulphenamide, tetramethyl thiuram disulfide, tetramethyl thiuram monosulfide, tetraethyl thiuram disulfide, tetraethyl thiuram monosulfide, tetrabenzyl thiuram disulfide, tetrabenzyl thiuram monosulfide, tetrabutyl thiuram disulfide, tetrabutyl thiuram monosulfide, tetraisopropyl thiuram disulfide, tetraisopropyl thiuram monosulfide, N-cyclohexylthiophthalimide, N-cyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, 4-morpholinyl-2-benzothiazole disulfide, dipentamethylene thiuram disulfide, dipentamethylene thiuram monosulfide, dipentamethylene thiuram tetrasulfide, 4,4′- dithiomorpholine, 2-mercaptotoluimidazole, ethylene thiourea, trimethylthiourea, 1,3-diethylethlourea and 1,3-dibutylthiourea; e. mixing the mixtures; and f. recovering the resultant functionalized nano size cadmium or zinc oxide or sulfide particle.