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Multi-element doped carbon nanotube array modified carbon fiber and its preparation method and application

A carbon nanotube array and nanotube array technology, which is applied in the field of nitrogen, boron, and phosphorus multi-element doped three-dimensional porous carbon nanotube arrays to modify carbon fibers and its preparation. Various elements and other issues, to achieve the effect of improving catalytic activity, simple doping process, and increasing specific surface area

Active Publication Date: 2020-02-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problem that the carbon nanotube arrays of modified carbon fibers have few types of carbon sources in the prior art, and the carbon nanotube arrays cannot be doped with multiple elements at the same time

Method used

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  • Multi-element doped carbon nanotube array modified carbon fiber and its preparation method and application
  • Multi-element doped carbon nanotube array modified carbon fiber and its preparation method and application
  • Multi-element doped carbon nanotube array modified carbon fiber and its preparation method and application

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Embodiment 1

[0036] (1) Electrodeposition preparation of zinc oxide nanorod array templates on carbon fibers: Activate the carbon fibers: place the carbon fibers in 15% hydrogen peroxide aqueous solution at 40° C. for 24 hours. Prepare the electrolyte solution: weigh a certain amount of zinc nitrate and dissolve it in 100 mL of deionized water, gradually add ammonia water to adjust the pH of the solution to 9. Two-electrode system galvanostatic electrodeposition of hexagonal prismatic zinc oxide nanorod arrays, the zinc rods as the reference electrode and the counter electrode, the current density is -0.0008A cm-2. First, the carbon fiber is used as the working electrode, and the carbon fiber with zinc oxide seeds is obtained by electrodeposition at 20°C; then, the obtained carbon fiber with zinc oxide seeds is used as the working electrode, and the carbon fiber with zinc oxide seeds is obtained by electrodeposition at 80°C. rods of carbon fibers, namely ZnO nanorod arrays / carbon fiber com...

Embodiment 2

[0040] (1) Electrodeposition preparation of zinc oxide nanorod array templates on carbon fibers: Activate the carbon fibers: place the carbon fibers in 15% hydrogen peroxide aqueous solution at 40° C. for 36 hours. Prepare the electrolyte solution: weigh a certain amount of zinc nitrate and dissolve it in 100 mL of deionized water, gradually add ammonia water to adjust the pH of the solution to 10. Two-electrode system galvanostatic electrodeposition of hexagonal prismatic zinc oxide nanorod arrays, the zinc rods are the reference electrode and the counter electrode, and the current density is -0.0008A cm -2 . First, the carbon fiber is used as the working electrode, and the carbon fiber with zinc oxide seeds is obtained by electrodeposition at 20°C; then, the obtained carbon fiber with zinc oxide seeds is used as the working electrode, and the carbon fiber with zinc oxide seeds is obtained by electrodeposition at 80°C. rods of carbon fibers, namely ZnO nanorod arrays / carbon ...

Embodiment 3

[0044] (1) Electrodeposition preparation of zinc oxide nanorod array templates on carbon fibers: Activate the carbon fibers: place the carbon fibers in 20% hydrogen peroxide aqueous solution at 40° C. for 48 hours. Preparation of electrolyte solution: Weigh a certain amount of zinc nitrate and dissolve it in 100 mL of deionized water, gradually add ammonia water to adjust the pH of the solution to 11. Two-electrode system galvanostatic electrodeposition of hexagonal prismatic zinc oxide nanorod arrays, the zinc rods are the reference electrode and the counter electrode, and the current density is -0.0008A cm -2 . First, the carbon fiber is used as the working electrode, and the carbon fiber with the zinc oxide seed is grown by electrodeposition at a temperature above 20°C; then, the obtained carbon fiber with the zinc oxide seed is used as the working electrode, and the carbon fiber with the zinc oxide seed is grown by electrodeposition at a temperature above 80°C. Carbon fib...

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Abstract

The invention discloses a multi-element doped carbon nano-tube array modified carbon fiber, a preparation method and applications thereof, and belongs to the field of carbon nanometer materials. The preparation method comprises: depositing an array template on carbon fiber, coating the array template with an imidazole tetrafluoroborate and / or imidazole hexafluorophosphate ionic liquid in a dropwise manner, and calcining to carbonize the ionic liquid so as to make the nitrogen element and / or the boron element and the phosphorus element in ionic liquid enter the carbon layer in a co-doped manner; and removing the array template to obtain the multi-element doped carbon nano-tube array modified carbon fiber. According to the present invention, the preparation process is simple; the formed multi-element doped carbon nano-tube array can significantly increase the specific surface area of the modified electrode; various heteroatoms doped into the carbon material form the structural defects and the non-uniform charge distribution in the vicinity of adjacent carbon atoms, such that the carbon material has rich active sites and high electrocatalytic activity; and the multi-element doped carbon nano-tube array modified carbon fiber is used for preparing a self-supporting flexible microelectrode for detecting the hydrogen peroxide content.

Description

technical field [0001] The invention belongs to the field of carbon nanomaterials, and in particular relates to a nitrogen, boron, and phosphorus multi-element doped three-dimensional porous carbon nanotube array modified carbon fiber, a preparation method and application thereof. Background technique [0002] As the frontier field of electroanalytical chemistry, microelectrode technology provides a powerful means for people to conduct ultra-sensitive detection at the cell level, thereby exploring cell physiological phenomena and revealing the laws of life activities. It has been found that loading functional nanomaterials with special structures on the surface of fiber microelectrodes and constructing an electrode interface that is sensitized by functional materials is an effective way to improve the electrochemical sensing performance of fiber electrodes. [0003] Carbon nanotubes have good electrical properties and excellent surface chemical properties, and can maintain t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/74D06M11/69D06M11/58D06M11/80D06M11/07G01N27/30D06M101/40
CPCD06M11/07D06M11/58D06M11/69D06M11/74D06M11/80D06M2101/40G01N27/308
Inventor 肖菲董旭林张艳高若涵
Owner HUAZHONG UNIV OF SCI & TECH
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