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A kind of metal oxide/nitrogen-doped carbon nanotube and its preparation method and application

A technology of nitrogen-doped carbon and multi-walled carbon nanotubes, which is applied in the field of composite materials, can solve the problems of not being suitable for mass production, metal oxides are easy to fall off, and the cost of the preparation method is high, so as to avoid solvothermal reaction and good electron transmission role, avoiding the effect of preprocessing steps

Active Publication Date: 2016-09-14
SHANGHAI SHANSHAN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects that the metal oxide in the existing metal oxide / nitrogen-doped carbon nanotube composite material is easy to fall off, and the preparation method is costly, and is not suitable for mass production, and provides a A kind of metal oxide / nitrogen-doped carbon nanotube composite material and its preparation method and application

Method used

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  • A kind of metal oxide/nitrogen-doped carbon nanotube and its preparation method and application
  • A kind of metal oxide/nitrogen-doped carbon nanotube and its preparation method and application
  • A kind of metal oxide/nitrogen-doped carbon nanotube and its preparation method and application

Examples

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Effect test

Embodiment 1

[0040] Example 1 SnO 2 / Nitrogen-doped carbon nanotube composites

[0041] (1) Mix 0.5g of nitrogen-doped carbon nanotubes (the diameter of nitrogen-doped carbon nanotubes is 30-50nm, the length is 5-15μm, and the nitrogen doping amount is 5.0mmol / g) in 10mL of water and 10mL of ethanol During ultrasonic dispersion at 20KHz for 30 minutes, solution A was obtained;

[0042] (2) 1g SnCl 2 2H 2 The O solid was dissolved in 18 mL of absolute ethanol to obtain solution B (SnCl 2 The concentration is 5.58wt%); under the condition of stirring, solution B was dripped into solution A at room temperature, and stirred for 2 hours to obtain a mixed solution;

[0043] (3) Suction filter the mixture, wash it with deionized water and ethanol accordingly, dry it in an oven at 80°C for 5 hours after filtration, and roast it in vacuum at 800°C for 0.5 hour to obtain SnO 2 / Nitrogen-doped carbon nanotube composites

[0044] SnO 2 / Characterization of nitrogen-doped carbon nanotube composi...

Embodiment 2

[0047] Example 2 TiO 2 / Nitrogen-doped carbon nanotube composites

[0048] (1) Mix 1g nitrogen-doped carbon nanotubes (diameter of nitrogen-doped carbon nanotubes is 40-60nm, length is 10-25μm, nitrogen doping amount is 7.2mmol / g) in 8mL water and 240mL isopropanol Ultrasonic dispersion in the solution at 50KHz for 1 hour to obtain solution A;

[0049] (2) Dissolve 6.82mL tetraisopropyl titanate (TPOT) in 80mL isopropanol to obtain solution B (the concentration of TPOT is 9.79wt%); under stirring condition, at room temperature, drop solution B into In solution A, stir for 3 hours to obtain a mixed solution;

[0050] (3) Suction filter the mixture, wash it with deionized water and ethanol accordingly, dry it at 50°C for 0.5 hours, and vacuum roast it at 400°C for 10 hours to obtain TiO 2 / Nitrogen-doped carbon nanotube composites.

[0051] Analysis of TiO by Transmission Electron Microscopy (TEM) (JEOL-JEM-1005) 2 / Nitrogen-doped carbon nanotube composites. It can be seen...

Embodiment 3

[0052] Example 3 WO 3 / Nitrogen-doped carbon nanotube composites

[0053] (1) Mix 0.5g nitrogen-doped carbon nanotubes (diameter of nitrogen-doped carbon nanotubes is 20-50nm, length is 15-40μm, nitrogen doping amount is 20mmol / g) in 20mL water and 180mL n-butanol The solution was ultrasonically dispersed at 40KHz for 6 hours to obtain solution A;

[0054] (2) 1.62g sodium tungstate (Na 2 WO 4 2H 2 O) The solid was dissolved in 200 mL of water to obtain solution B (Na 2 WO 4 The concentration is 0.76wt%); under the condition of stirring, at room temperature, solution B was dripped into solution A, stirred for 3 hours to obtain a mixed solution;

[0055] (3) Suction filter the mixed solution, wash it with deionized water and ethanol accordingly, dry it in a drying oven at 120°C for 3 hours after filtering, and roast it in vacuum at 600°C for 5 hours to obtain TiO 2 / Nitrogen-doped carbon nanotube composites.

[0056] Analysis of WO by scanning electron microscope (SEM) ...

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Abstract

The invention discloses a preparation method of a metallic oxide / N-doped carbon nano tube composite material. The preparation method comprises the following steps of: (1) ultrasonically dispersing an N-doped carbon nano tube in a mixed solution of water and alcohol to obtain a solution A; (2) under the condition of stirring, dripping a solution B into the solution A, and stirring to obtain a mixed solution, wherein the solution B is water and / or alcoholic solution containing metal ions; and (3) carrying out solid-liquid separation on the mixed solution, and washing, drying and roasting to obtain the metallic oxide / N-doped carbon nano tube composite material. The invention also provides the composite material obtained through the method and an application thereof. According to the preparation method disclosed by the invention, as a method of solution phase synthesis under the condition of room temperature is adopted, hydrothermal reaction and solvothermal reaction with high temperature and high pressure are avoided, and the composite material with tighter combination of the metallic oxnide and the / N-doped carbon nano tube can be obtained. By adopting the preparation method, the preparation cost is low, the operation is simple, the preparation condition is mild, and the reaction period is also short.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a metal oxide / nitrogen-doped carbon nanotube and its preparation method and application. Background technique [0002] Carbon nanotubes have attracted extensive and interdisciplinary attention since their superior electronic and mechanical properties were reported. In recent years, the use of chemical modification methods to develop interesting carbon nanotube derivatives with superior performance has become one of the research hotspots. Among them, nitrogen-doped carbon nanotubes can significantly improve their structural, chemical, electrical and thermodynamic properties theoretically and experimentally, and thus have attracted more and more attention from researchers. It not only has the excellent mechanical and thermodynamic stability properties of ordinary carbon nanotubes, but also the existence of nitrogen atoms makes it introduce π electron clouds on the surface of car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/14B01J21/18B01J23/30B82Y40/00B82Y30/00H01M4/48
CPCY02E60/10
Inventor 汪玲玲沈龙董爱想苗荣荣张华杜旭方郁野
Owner SHANGHAI SHANSHAN TECH CO LTD
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