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Nano titanium dioxide coated carbon nanotube reinforced carbon nanofiber and preparation method thereof

A nano-titanium dioxide and nano-carbon fiber technology, applied in the chemical characteristics of fibers, rayon manufacturing, chemical post-processing of rayon, etc., can solve the problems of high brittleness of titanium dioxide fibers, difficult processing and utilization, etc., to improve the photoelectric conversion rate and processability. Strong, high specific surface area effect

Inactive Publication Date: 2012-08-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these titanium dioxide fibers still have the problem of being too brittle and difficult to process and utilize.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A nano-titanium dioxide-coated carbon nanotube reinforced nano-carbon fiber is characterized in that it is uniformly coated with anatase-type titanium dioxide particles with a diameter of 3-10 nm, and contains a single-walled carbon nanotube with a diameter of 0.99 nm and a diameter of 0.99 nm. The nanometer carbon fiber of 30-80nm is composed of 1% of nano titanium dioxide, 3% of carbon nanotube and 96% of carbon fiber in mass percent.

[0027] The preparation steps of the nano-titanium dioxide-coated carbon nanotube reinforced nano-carbon fiber are as follows:

[0028] (1) dissolving the carbon fiber precursor polymer polyacrylonitrile that accounts for 9% of the solution by mass percentage in its corresponding solvent N,N-dimethylformamide to prepare the carbon fiber precursor polymer polyacrylonitrile spinning solution;

[0029] (2) Adding 0.05% single-walled carbon nanotubes and 0.01% surfactant polyvinylpyrrolidone to the polyacrylonitrile spinning solution prepar...

Embodiment 2

[0035] A nano-titanium dioxide-coated carbon nanotube reinforced nano-carbon fiber is characterized in that it is uniformly coated with anatase-type titanium dioxide particles with a diameter of 20-50nm, and contains multi-walled carbon nanotubes with a diameter of 30-50nm and a diameter of The carbon nanofiber is 350-500nm, and its mass percent components are: 15% of nano titanium dioxide, 20% of carbon nanotube and 65% of carbon fiber.

[0036] The preparation steps of the nano-titanium dioxide-coated carbon nanotube reinforced nano-carbon fiber are as follows:

[0037] (1) dissolving the carbon fiber precursor polymer cellulose that accounts for 3% of the solution in its corresponding solvent oxidized methylmorpholine mono-water solution to prepare the carbon fiber precursor polymer cellulose spinning solution;

[0038] (2) adding 5% multi-walled carbon nanotubes accounting for cellulose mass percent and 1% cellulose mass percent surfactant Triton X-100 to the cellulose spi...

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Abstract

The invention discloses a nano titanium dioxide coated carbon nanotube reinforced carbon nanofiber which is characterized in that the surface layer is uniformly coated with anatase titanium dioxide particles with diameters of 1-100nm, the inside contains single-wall or multi-wall carbon nanotubes with diameters of 0.9-100nm, and the diameter of the carbon nanofiber is 30-700nm. The nano titanium dioxide coated carbon nanotube reinforced carbon nanofiber is prepared from the following components in percentage by mass: 0.05-25% of nano titanium dioxide, 0.05-30% of carbon nanotube and 45-99.9% of carbon fiber. With the features one-dimension continuity, high specific area and the like, the fiber has higher solution absorptivity and incident light diffuse reflection effect, has the characteristics of higher softness, higher conductivity and stronger workability than the titanium dioxide nanowire and nanofiber, and can effectively enhance the photoelectric conversion rate of the solar dye-sensitized cells.

Description

technical field [0001] The invention belongs to the field of energy materials, and relates to a nano-titanium dioxide-coated carbon nanotube-reinforced nano-carbon fiber and a preparation method thereof, in particular to a nano-titanium dioxide-coated carbon nanotube-reinforced nanofiber that can be used as a photosensitive catalyst for a dye-sensitized solar cell. Carbon fibers and methods for their preparation. Background technique [0002] Solving the energy crisis has become one of the greatest challenges facing the world, and solar energy is one of the most promising future energy sources. The production process of dye-sensitized solar cells is simple, the cost is less than half that of silicon-based solar cells, and the application flexibility is large. In terms of application development, dye-sensitized solar cells have the characteristics of light weight, thin thickness, bendable, and easy to carry. In addition, dye-sensitized solar cells have good weak light perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F9/16D01F9/145D01F9/24D01F1/10D01F11/12
Inventor 万玉芹王鸿博高卫东
Owner JIANGNAN UNIV
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