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Multi-walled carbon nanotube injected with carboxyl ions, preparation method and application thereof

A technology of multi-walled carbon nanotubes and carboxyl ions, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, to improve anticoagulant performance, reduce platelet adhesion rate, and good blood compatibility Effect

Inactive Publication Date: 2012-03-21
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on applying ion implantation technology to the surface modification of carbon nanotube materials and using carboxyl groups as implanted ions to improve the anticoagulant performance of carbon nanotube materials has not yet been reported in the literature.

Method used

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  • Multi-walled carbon nanotube injected with carboxyl ions, preparation method and application thereof
  • Multi-walled carbon nanotube injected with carboxyl ions, preparation method and application thereof
  • Multi-walled carbon nanotube injected with carboxyl ions, preparation method and application thereof

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Embodiment 1

[0050] Preparation of Carboxyl Ion Implanted Multi-walled Carbon Nanotubes:

[0051] Use the BNU-400keV ion implanter to perform carboxyl ion implantation on the pre-sprayed multi-walled carbon nanotube substrate (silicon dioxide wafer); in this process, formic acid is used as the ion source, and the formic acid is first evaporated at high temperature and accelerated electron bombardment To ionize it, the electron beam current density is controlled at 3μA / cm 2 below; the air pressure in the chamber during injection is 1 10 -3 Pa, the temperature is room temperature, and the ion energy is 40keV; the implantation density of carboxyl ions is 5×10 13 piece / cm 2 ; The percentage of oxygen atoms is 7.53%.

Embodiment 2

[0053] Preparation of Carboxyl Ion Implanted Multi-walled Carbon Nanotubes:

[0054] Use the BNU-400keV ion implanter to perform carboxyl ion implantation on the pre-sprayed multi-walled carbon nanotube substrate (silicon dioxide wafer); in this process, formic acid is used as the ion source, and the formic acid is first evaporated at high temperature and accelerated electron bombardment To ionize it, the electron beam current density is controlled at 3μA / cm 2 below; the air pressure in the chamber during injection is 1 10 -3 Pa, the temperature is room temperature, and the ion energy is 40keV; the implantation density of carboxyl ions is 1×10 14 piece / cm 2 . The percentage of oxygen atoms is 8.5%.

Embodiment 3

[0056] Preparation of Carboxyl Ion Implanted Multi-walled Carbon Nanotubes:

[0057] Use the BNU-400keV ion implanter to perform carboxyl ion implantation on the pre-sprayed multi-walled carbon nanotube substrate (silicon dioxide wafer); in this process, formic acid is used as the ion source, and the formic acid is first evaporated at high temperature and accelerated electron bombardment To ionize it, the electron beam current density is controlled at 3μA / cm 2 below; the air pressure in the chamber during injection is 1 10 -3 Pa, the temperature is room temperature, and the ion energy is 40keV; the implantation density of carboxyl ions is 5×10 14 piece / cm 2 ; The percentage of oxygen atoms is 12.86%.

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Abstract

The invention relates to a multi-walled carbon nanotube injected with carboxyl ions. The preparation method comprises the following steps: spraying the multi-walled carbon nanotube on a silicon dioxide substrate which is used for pre-baking carbon membranes, and injecting the carboxyl ions in the surface of the carbon nanotube after being sprayed by an ion implanter, wherein the implanting density of the carboxyl ions is 5*1013 in each square centimetre, 1*1014 in each square centimetre and 5*1014 in each square centimetre; the ion energy is 40 keV; and the percentage of the oxygen atoms in the material is 7.53%-12.86%. The experiment of adhering platelets of adult New Zealand rabbits on the material shows that anti-coagulant properties of the material can be effectively improved through injecting the carboxyl ions on MWCNTs, so the material has good applicable value of researches and wide application prospect while being adopted as material contacted with blood.

Description

technical field [0001] The invention belongs to the novel subject field of the application of nanometer materials in biomedical materials. Involves using chemical vapor deposition system (CVD) to grow multi-walled carbon nanotubes (MWCNTs); especially using the BNU-400keV ion implanter of the School of Nuclear Science and Technology of Beijing Normal University to implant carboxyl ions into the surface of MWCNTs to improve the blood compatibility of MWCNTs Sexual new technology. Background technique [0002] Nanotechnology is a cutting-edge, interdisciplinary new subject field that was gradually developed in the late 1980s and early 1990s. Its rapid development will prompt a revolutionary change in all industrial fields in the 21st century. Due to their small volume and large surface-to-volume ratio, nanomaterials have many properties that bulky materials do not have, so that they have many new applications in the fields of catalysis, electronics, optoelectronics, and medic...

Claims

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Application Information

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IPC IPC(8): A61L33/02B82Y30/00B82Y40/00
Inventor 李德军张艺腾郭美仙赵梦鲤岳玉琛
Owner TIANJIN NORMAL UNIVERSITY
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