C01B32/178

Infiltrated carbon nanotubes
20230407462 · 2023-12-21 ·

Described herein are examples of systems, methods, apparatuses, and devices which include a carbon nanotube structure. The carbon nanotube structure may include a first carbon nanotube with a first top surface and a first bottom surface. The carbon nanotube structure may include a second carbon nanotube vertically aligned with the first carbon nanotube. The second carbon nanotube may include a second top surface and a second bottom surface. The first carbon nanotube and the second carbon nanotube may be infiltrated with carbon by a mixture that is flowing. The mixture may include a first amount of ethylene and a second amount of hydrogen. The carbon nanotube structure may include a thin film extending along the first bottom surface and the second bottom surface.

Discharge plasma sintering method for manufacturing single-walled carbon nanotube reinforced metal matrix composite and composite material produced thereby

The present invention provides a method of manufacturing a single-walled-carbon-nanotube-reinforced metal matrix complex material. The method includes (a) manufacturing a complex powder by performing ball milling of a metal powder and a single-walled carbon nanotube powder, and (b) manufacturing a metal-carbon-nanotube complex material by spark-plasma-sintering (SPS) the complex powder manufactured during step (a). According to the method of manufacturing the single-walled-carbon-nanotube-reinforced metal matrix complex material according to the present invention, in order to manufacture material parts requiring high strength and abrasion resistance, the single-walled carbon nanotube powder is added to various metal matrixes and ball milling is performed, thus manufacturing a complex powder having uniform dispersity. The manufactured complex powder is subjected to complexation in a short period of time using a spark-plasma-sintering (SPS) process, thereby easily manufacturing a bulk-type single-walled-carbon-nanotube-reinforced metal matrix complex material having excellent physical properties.

Discharge plasma sintering method for manufacturing single-walled carbon nanotube reinforced metal matrix composite and composite material produced thereby

The present invention provides a method of manufacturing a single-walled-carbon-nanotube-reinforced metal matrix complex material. The method includes (a) manufacturing a complex powder by performing ball milling of a metal powder and a single-walled carbon nanotube powder, and (b) manufacturing a metal-carbon-nanotube complex material by spark-plasma-sintering (SPS) the complex powder manufactured during step (a). According to the method of manufacturing the single-walled-carbon-nanotube-reinforced metal matrix complex material according to the present invention, in order to manufacture material parts requiring high strength and abrasion resistance, the single-walled carbon nanotube powder is added to various metal matrixes and ball milling is performed, thus manufacturing a complex powder having uniform dispersity. The manufactured complex powder is subjected to complexation in a short period of time using a spark-plasma-sintering (SPS) process, thereby easily manufacturing a bulk-type single-walled-carbon-nanotube-reinforced metal matrix complex material having excellent physical properties.

Devices and Methods for Thin Film Chemical Processing

Producing nanostructure materials in a thin film reactor (TFR) from starting material of inorganic or organic material of layered or two dimensional (2D) structure or inorganic material transformed in situ into 2D inorganic material, or single walled carbon nanotubes (SWCNTs), and a solvent or liquid phase. The TFR can be a vortex fluidic device (VFD) or a device with spaced first and second fluid contact surfaces, which can be conical, for relative rotation to generate shear stress in the thin film therebetween. A liquid supply means delivers a liquid between the first and second fluid contact surfaces. The composition can be exposed to laser energy. The thin film reactor can form graphene, graphene oxide, scrolls, tubes, spheres or rings of the layered or 2D material.

GRAPHENE NANORIBBONS, GRAPHENE NANOPLATELETS AND MIXTURES THEREOF AND METHODS OF SYNTHESIS
20200270133 · 2020-08-27 ·

Provided herein are graphene nanoribbons with high structural uniformity and low levels of impurities and methods of synthesis thereof. Also provided herein are graphene nanoplatelets of superior structural uniformity and low levels of impurities and methods of synthesis thereof. Further provided herein are mixtures of graphene nanoribbons and graphene nanoplatelets of good structural uniformity and low levels of impurities and methods of synthesis thereof. The method includes, for example, the steps of depositing catalyst on a constantly moving substrate, forming carbon nanotubes on the substrate, separating carbon nanotubes from the substrate, collecting the carbon nanotubes from the surface where the substrate moves continuously and sequentially through the depositing, forming, separating and collecting steps. Further processing steps convert the synthesized carbon nanotubes to graphene nanoribbons, graphene nanoplatelets and mixtures thereof.

GRAPHENE NANORIBBONS, GRAPHENE NANOPLATELETS AND MIXTURES THEREOF AND METHODS OF SYNTHESIS
20200270133 · 2020-08-27 ·

Provided herein are graphene nanoribbons with high structural uniformity and low levels of impurities and methods of synthesis thereof. Also provided herein are graphene nanoplatelets of superior structural uniformity and low levels of impurities and methods of synthesis thereof. Further provided herein are mixtures of graphene nanoribbons and graphene nanoplatelets of good structural uniformity and low levels of impurities and methods of synthesis thereof. The method includes, for example, the steps of depositing catalyst on a constantly moving substrate, forming carbon nanotubes on the substrate, separating carbon nanotubes from the substrate, collecting the carbon nanotubes from the surface where the substrate moves continuously and sequentially through the depositing, forming, separating and collecting steps. Further processing steps convert the synthesized carbon nanotubes to graphene nanoribbons, graphene nanoplatelets and mixtures thereof.

Treatment Composition for Contaminated Soil or Ground Water

Discrete, individualized carbon nanotubes having targeted, or selective, oxidation levels and/or content on the interior and exterior of the tube walls are claimed. Such carbon nanotubes can have little to no inner tube surface oxidation, or differing amounts and/or types of oxidation between the tubes' inner and outer surfaces. These new discrete carbon nanotubes are useful in treatment compositions for contaminated soil and ground water. Additives such as plasticizers, can be used in compounding and formulation of elastomeric, thermoplastic and thermoset composite for improvement of mechanical, electrical and thermal properties.

Treatment Composition for Contaminated Soil or Ground Water

Discrete, individualized carbon nanotubes having targeted, or selective, oxidation levels and/or content on the interior and exterior of the tube walls are claimed. Such carbon nanotubes can have little to no inner tube surface oxidation, or differing amounts and/or types of oxidation between the tubes' inner and outer surfaces. These new discrete carbon nanotubes are useful in treatment compositions for contaminated soil and ground water. Additives such as plasticizers, can be used in compounding and formulation of elastomeric, thermoplastic and thermoset composite for improvement of mechanical, electrical and thermal properties.

INFILTRATING CARBON NANOTUBES WITH CARBON TO PREVENT DELAMINATION FROM A SUBSTRATE
20200248302 · 2020-08-06 ·

A method includes depositing a layer of alumina over a silicon substrate, providing a patterned photoresist over the layer of alumina, providing an iron catalyst layer over the patterned photoresist, providing the iron catalyst layer over an exposed portion of the alumina, providing a first iron catalyst site over a first portion of the alumina, providing a second iron catalyst site over a second portion of the alumina, growing a first carbon nanotube on the first iron catalyst site, growing a second carbon nanotube on the second iron catalyst site, infiltrating the first carbon nanotube and the second carbon nanotube with carbon, and cooling both the first carbon nanotube and the second carbon nanotube. The infiltrating strengthens the first carbon nanotube and the second carbon nanotube to not delaminate from the substrate when the first carbon nanotube and the second carbon nanotube are cooled.

GRAPHENE NANORIBBONS, GRAPHENE NANOPLATELETS AND MIXTURES THEREOF AND LUBRICANT ADDITIVES
20200247676 · 2020-08-06 ·

Provided herein are graphene nanoribbons with high structural uniformity and low levels of impurities and methods of synthesis thereof. Also provided herein are graphene nanoplatelets of superior structural uniformity and low levels of impurities and methods of synthesis thereof. Further provided herein are mixtures of graphene nanoribbons and graphene nanoplatelets of good structural uniformity and low levels of impurities and methods of synthesis thereof. The method includes, for example, the steps of depositing catalyst on a constantly moving substrate, forming carbon nanotubes on the substrate, separating carbon nanotubes from the substrate, collecting the carbon nanotubes from the surface where the substrate moves continuously and sequentially through the depositing, forming, separating and collecting steps. Further processing steps convert the synthesized carbon nanotubes to graphene nanoribbons, graphene nanoplatelets and mixtures thereof.