Doped-carbon composites, synthesizing methods and applications of the same
AssigneeBoard of Trustees of the University of Arkansas
InventorTito Viswanathan
Life of this patent
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Abstract
A composite is synthesized by pyrolysis of a mixture of tannin and melamine. The synthesis process comprises dissolving the tannin and the melamine in water to form a homogeneous solution; evaporating the solution to yield a dry solid; and subjecting powders of the dry solid to a heat treatment at a temperature for a duration of time effective to produce the composite.
Claims8
A composite synthesized by pyrolysis of a mixture of tannin and melamine, wherein the steps involved in the synthesis process comprises:
- (a) dissolving the tannin and the melamine in water to form a homogeneous solution;
- (b) evaporating the solution to yield a dry solid;
- and
- (c) subjecting powders of the dry solid to a heat treatment at a temperature for a duration of time effective to produce the composite,
- wherein the solution further contains a heteroatom containing additive;
- wherein the heteroatom containing additive comprises one containing oxygen (O), nitrogen (N), phosphorus (P), boron (B), sulfur (S), iodine (I), fluorine (F), silicon (Si), selenium (Se), germanium (Ge), or a mixture thereof;
- and
- wherein the additive containing the doping chemical element comprises one selected from the group consisting of:
- a boron compound containing boric acid, or sodium borate;
- a phosphorus compound containing phosphoric acid, polyphosphoric acid, or sodium phosphate;
- a silicon compound containing potassium silicate;
- a fluorine compound containing ammonium fluoride;
- and
- an iodine compound containing sodium iodide, or ammonium iodide.
A composite synthesized by pyrolysis of a mixture of tannin and melamine, wherein the steps involved in the synthesis process comprises:
- (d) dissolving the tannin and the melamine in water to form a homogeneous solution;
- (e) evaporating the solution to yield a dry solid;
- and
- (f) subjecting powders of the dry solid to a heat treatment at a temperature for a duration of time effective to produce the composite,
- wherein the solution further contains a heteroatom containing additive;
- wherein the heteroatom containing additive comprises one containing oxygen (O), nitrogen (N), phosphorus (P), boron (B), sulfur (S), iodine (I), fluorine (F), silicon (Si), selenium (Se), germanium (Ge), or a mixture thereof;
- and
- wherein the additive containing the doping chemical element comprises a nitrogen compound containing dicyandiamide, urea, guanidine, or histidine.
Dependencies are inferred from the claim text.