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US 12,595,179 B2Granted
Synthesis of uniform diamond nanoparticles
AssigneeUniversity of North Texas
InventorsHao Yan, Tengteng Lyu
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Abstract
The synthesis of sub-five-nanometer nanodiamonds with high uniformity and purity. Inspired by the formation of natural diamond, iron carbide nanoparticles embedded in iron oxide matrices as the carbon source were used. High-pressure-high-temperature treatment of the precursor yields nanodiamonds with tunable diameters down to 2.13 nm and 0.22-nm standard deviation. The disclosed synthesis procedures also include a method for forming fluorescent nanodiamonds.
Claims20
A composition comprising nanodiamond particles wherein:
- a) each nanodiamond particle is encapsulated by a transition metal oxide layer comprising iron(II) oxide (FeO) encapsulated by a layer comprising iron(III) oxide (Fe2O3);
- and
- b) each nanodiamond particle has a diameter of about 1 nm to about 5 nm;
- wherein the diameters the nanodiamond particles of the composition vary by ±0.3 nm or less.
1 more element
Dependencies are inferred from the claim text.