Patent
US 9,931,609Antibacterial Activity of Silver-Graphene Quantum Dots Nanocomposites against Gram-Positive and Gram-Negative Bacteria
Khaled Habiba
US
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A method of synthesizing functionalized Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs) comprising: irradiating with a source of electromagnetic radiation a mixture containing a compound serving as a source of carbon, a powder serving as a precursor of a nanocomposite core and a ligand source, effectively synthesizing Nanoparticle-Graphene Quantum Dots nanocomposites having a core decorated with Graphene Quantum Dots and functionalized with said ligand.
The method of claim 16, wherein ligands are attached to at least one of: the nanocomposite core and the Graphene Quantum Dots.
The method of claim 16, wherein the compound serving as a source of carbon is hydrocarbon.
The method of claim 16, wherein the ligand source is a polymer.
The method of claim 16, wherein said powder comprises at least one of: an elemental metal powder, an elemental semiconductor powder, a metal oxide powder and a semiconductor oxide powder.
The method of claim 16, wherein the compound serving as a source of carbon, the powder and the ligand are combined in a liquid suspension.
The method of claim 16, wherein the Nanoparticle- Graphene Quantum Dots nanocomposites are soluble in organic and polar solutions.
The method of claim 16, wherein the source of electromagnetic radiation is a laser.
The method of claim 16, wherein the size of said Graphene Quantum Dots is between 2 and 10 nm.
The method of claim 16, wherein the size of said Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposites is between 5 and 100 nm.
The method of claim 16, wherein the concentration of the ligand source is between 0.1-10 mg/mL.
The method of claim 16, wherein the concentration of the powder is between 0.1-10 mg/mL.
The method of claim 16, wherein said mixture is irradiated with a power density between 108 -10 W cm 2
A functionalized Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposite synthesized by the method of claim 16. 6
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Bare GQDs synthesized using a bottom-up pulsed laser synthesis approach. A 0.25 wt% mixture of nickel oxide powder in 98.5 wt% benzene with 1.25 wt% PEG bis(3-aminopropyl) terminated was irradiated for 45 minutes with a 1064 nm pulsed Nd:YAG laser (10 Hz, 10 ns pulse width). GQDs were separated from benzene and precipitated NiO by centrifugation at 10000 rpm, dissolved in nano-pure water, and purified by dialysis.
4 materials1 process step
Ag-GQDs synthesized by irradiating a mixture of 0.25 wt% silver powder and 1.25 wt% PEG bis(3-aminopropyl) terminated in 98.5 wt% benzene with a pulsed Nd:YAG laser (1064 nm, 10 Hz, 10 ns pulse width) for 45 minutes. Nanoparticles were separated from benzene, dissolved in nano-pure water, and purified by dialysis.
Materials described outside the worked examples.
Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs)
nanocomposite core precursor powder
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 2–10 nm | — |
Thickness | 5–100 nm |
Patent
Atlas literature
Patent
US 9,931,609Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
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A method of synthesizing functionalized Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs) comprising: irradiating with a source of electromagnetic radiation a mixture containing a compound serving as a source of carbon, a powder serving as a precursor of a nanocomposite core and a ligand source, effectively synthesizing Nanoparticle-Graphene Quantum Dots nanocomposites having a core decorated with Graphene Quantum Dots and functionalized with said ligand.
The method of claim 16, wherein ligands are attached to at least one of: the nanocomposite core and the Graphene Quantum Dots.
The method of claim 16, wherein the compound serving as a source of carbon is hydrocarbon.
The method of claim 16, wherein the ligand source is a polymer.
The method of claim 16, wherein said powder comprises at least one of: an elemental metal powder, an elemental semiconductor powder, a metal oxide powder and a semiconductor oxide powder.
The method of claim 16, wherein the compound serving as a source of carbon, the powder and the ligand are combined in a liquid suspension.
The method of claim 16, wherein the Nanoparticle- Graphene Quantum Dots nanocomposites are soluble in organic and polar solutions.
The method of claim 16, wherein the source of electromagnetic radiation is a laser.
The method of claim 16, wherein the size of said Graphene Quantum Dots is between 2 and 10 nm.
The method of claim 16, wherein the size of said Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposites is between 5 and 100 nm.
The method of claim 16, wherein the concentration of the ligand source is between 0.1-10 mg/mL.
The method of claim 16, wherein the concentration of the powder is between 0.1-10 mg/mL.
The method of claim 16, wherein said mixture is irradiated with a power density between 108 -10 W cm 2
A functionalized Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposite synthesized by the method of claim 16. 6
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Bare GQDs synthesized using a bottom-up pulsed laser synthesis approach. A 0.25 wt% mixture of nickel oxide powder in 98.5 wt% benzene with 1.25 wt% PEG bis(3-aminopropyl) terminated was irradiated for 45 minutes with a 1064 nm pulsed Nd:YAG laser (10 Hz, 10 ns pulse width). GQDs were separated from benzene and precipitated NiO by centrifugation at 10000 rpm, dissolved in nano-pure water, and purified by dialysis.
4 materials1 process step
Ag-GQDs synthesized by irradiating a mixture of 0.25 wt% silver powder and 1.25 wt% PEG bis(3-aminopropyl) terminated in 98.5 wt% benzene with a pulsed Nd:YAG laser (1064 nm, 10 Hz, 10 ns pulse width) for 45 minutes. Nanoparticles were separated from benzene, dissolved in nano-pure water, and purified by dialysis.
Materials described outside the worked examples.
Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs)
nanocomposite core precursor powder
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 2–10 nm | — |
Thickness | 5–100 nm |
Patent
Atlas literature
Patent
US 9,931,609Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Claims 1-15 canceled
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A method of synthesizing functionalized Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs) comprising: irradiating with a source of electromagnetic radiation a mixture containing a compound serving as a source of carbon, a powder serving as a precursor of a nanocomposite core and a ligand source, effectively synthesizing Nanoparticle-Graphene Quantum Dots nanocomposites having a core decorated with Graphene Quantum Dots and functionalized with said ligand.
The method of claim 16, wherein ligands are attached to at least one of: the nanocomposite core and the Graphene Quantum Dots.
The method of claim 16, wherein the compound serving as a source of carbon is hydrocarbon.
The method of claim 16, wherein the ligand source is a polymer.
The method of claim 16, wherein said powder comprises at least one of: an elemental metal powder, an elemental semiconductor powder, a metal oxide powder and a semiconductor oxide powder.
The method of claim 16, wherein the compound serving as a source of carbon, the powder and the ligand are combined in a liquid suspension.
The method of claim 16, wherein the Nanoparticle- Graphene Quantum Dots nanocomposites are soluble in organic and polar solutions.
The method of claim 16, wherein the source of electromagnetic radiation is a laser.
The method of claim 16, wherein the size of said Graphene Quantum Dots is between 2 and 10 nm.
The method of claim 16, wherein the size of said Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposites is between 5 and 100 nm.
The method of claim 16, wherein the concentration of the ligand source is between 0.1-10 mg/mL.
The method of claim 16, wherein the concentration of the powder is between 0.1-10 mg/mL.
The method of claim 16, wherein said mixture is irradiated with a power density between 108 -10 W cm 2
A functionalized Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposite synthesized by the method of claim 16. 6
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Bare GQDs synthesized using a bottom-up pulsed laser synthesis approach. A 0.25 wt% mixture of nickel oxide powder in 98.5 wt% benzene with 1.25 wt% PEG bis(3-aminopropyl) terminated was irradiated for 45 minutes with a 1064 nm pulsed Nd:YAG laser (10 Hz, 10 ns pulse width). GQDs were separated from benzene and precipitated NiO by centrifugation at 10000 rpm, dissolved in nano-pure water, and purified by dialysis.
4 materials1 process step
Ag-GQDs synthesized by irradiating a mixture of 0.25 wt% silver powder and 1.25 wt% PEG bis(3-aminopropyl) terminated in 98.5 wt% benzene with a pulsed Nd:YAG laser (1064 nm, 10 Hz, 10 ns pulse width) for 45 minutes. Nanoparticles were separated from benzene, dissolved in nano-pure water, and purified by dialysis.
Materials described outside the worked examples.
Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs)
nanocomposite core precursor powder
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 2–10 nm | — |
Thickness | 5–100 nm |
Patent
Atlas literature
Patent
US 9,931,609Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Claims 1-15 canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
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A method of synthesizing functionalized Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs) comprising: irradiating with a source of electromagnetic radiation a mixture containing a compound serving as a source of carbon, a powder serving as a precursor of a nanocomposite core and a ligand source, effectively synthesizing Nanoparticle-Graphene Quantum Dots nanocomposites having a core decorated with Graphene Quantum Dots and functionalized with said ligand.
The method of claim 16, wherein ligands are attached to at least one of: the nanocomposite core and the Graphene Quantum Dots.
The method of claim 16, wherein the compound serving as a source of carbon is hydrocarbon.
The method of claim 16, wherein the ligand source is a polymer.
The method of claim 16, wherein said powder comprises at least one of: an elemental metal powder, an elemental semiconductor powder, a metal oxide powder and a semiconductor oxide powder.
The method of claim 16, wherein the compound serving as a source of carbon, the powder and the ligand are combined in a liquid suspension.
The method of claim 16, wherein the Nanoparticle- Graphene Quantum Dots nanocomposites are soluble in organic and polar solutions.
The method of claim 16, wherein the source of electromagnetic radiation is a laser.
The method of claim 16, wherein the size of said Graphene Quantum Dots is between 2 and 10 nm.
The method of claim 16, wherein the size of said Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposites is between 5 and 100 nm.
The method of claim 16, wherein the concentration of the ligand source is between 0.1-10 mg/mL.
The method of claim 16, wherein the concentration of the powder is between 0.1-10 mg/mL.
The method of claim 16, wherein said mixture is irradiated with a power density between 108 -10 W cm 2
A functionalized Nanoparticle-Graphene Quantum Dots (NP-GQDs) nanocomposite synthesized by the method of claim 16. 6
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Bare GQDs synthesized using a bottom-up pulsed laser synthesis approach. A 0.25 wt% mixture of nickel oxide powder in 98.5 wt% benzene with 1.25 wt% PEG bis(3-aminopropyl) terminated was irradiated for 45 minutes with a 1064 nm pulsed Nd:YAG laser (10 Hz, 10 ns pulse width). GQDs were separated from benzene and precipitated NiO by centrifugation at 10000 rpm, dissolved in nano-pure water, and purified by dialysis.
4 materials1 process step
Ag-GQDs synthesized by irradiating a mixture of 0.25 wt% silver powder and 1.25 wt% PEG bis(3-aminopropyl) terminated in 98.5 wt% benzene with a pulsed Nd:YAG laser (1064 nm, 10 Hz, 10 ns pulse width) for 45 minutes. Nanoparticles were separated from benzene, dissolved in nano-pure water, and purified by dialysis.
Materials described outside the worked examples.
Nanoparticle-Graphene Quantum Dots nanocomposites (NP-GQDs)
nanocomposite core precursor powder
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 2–10 nm | — |
Thickness | 5–100 nm |
ligand source (polymer)
hydrocarbon (carbon source)
toluene
C₇H₈
glycerol
C₃H₈O₃
polyethylenimine (PEI)
| — |
— | 108 -10 W | — |
ligand source (polymer)
hydrocarbon (carbon source)
toluene
C₇H₈
glycerol
C₃H₈O₃
polyethylenimine (PEI)
| — |
— | 108 -10 W | — |
ligand source (polymer)
hydrocarbon (carbon source)
toluene
C₇H₈
glycerol
C₃H₈O₃
polyethylenimine (PEI)
| — |
— | 108 -10 W | — |
ligand source (polymer)
hydrocarbon (carbon source)
toluene
C₇H₈
glycerol
C₃H₈O₃
polyethylenimine (PEI)
| — |
— | 108 -10 W | — |