a cu 2 o/mwcnts composite materials, preparation methods and catalytic applications

A composite material and composite material technology, which is applied in the field of Cu2O/MWCNTs composite material and its preparation, can solve the problems of few literature reports on the catalytic AP thermal decomposition of composite materials, and achieve the effects of less pollution, lower thermal decomposition temperature, and accelerated thermal decomposition

Active Publication Date: 2020-07-21
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But using TG-DTA to study Cu 2 O / MWCNTs Composite Catalyzed AP Thermal Decomposition has Few Literature Reports

Method used

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  • a cu <sub>2</sub> o/mwcnts composite materials, preparation methods and catalytic applications
  • a cu <sub>2</sub> o/mwcnts composite materials, preparation methods and catalytic applications
  • a cu <sub>2</sub> o/mwcnts composite materials, preparation methods and catalytic applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] a Cu 2 O / MWCNTs composite material, the Cu in the composite material 2 O nanoparticles grow disorderly on the surface of MWCNTs.

[0042] Cu 2 The preparation method of O / MWCNTs composite material: method steps are as follows:

[0043] 1) Pretreatment of multi-walled carbon nanotubes: Add MWCNTs and concentrated nitric acid in sequence to a 250mL three-necked flask. MWCNTs acidified with nitric acid;

[0044] 2) Cu 2 Preparation of O / MWCNTs composites: Add MWCNTs to distilled water, ultrasonically disperse for 1 h, and then add CuSO 4 ·5H 2 O and PEG, magnetically stirred until completely dissolved; placed in an ultrasonic reactor and sonicated until the reaction system mixture changed from blue to black, titrated the reacted mixed solution with sodium hydroxide solution to pH = 11, and then magnetically stirred After the reaction, ethanol and distilled water were added to wash several times to obtain solid black particles, and the collected solid black particles...

Embodiment 2

[0056] Cu 2 The preparation method of O / MWCNTs composite material: method steps are as follows:

[0057] 1) Pretreatment of porous-walled carbon nanotubes: Add MWCNTs and concentrated nitric acid sequentially into a 250mL three-necked flask. MWCNTs acidified with concentrated nitric acid;

[0058] 2) Cu 2 Preparation of O / MWCNTs composites: Add MWCNTs to distilled water, ultrasonically disperse for 1 h, and then add CuSO 4 ·5H 2 O and PEG, magnetically stirred until completely dissolved; placed in an ultrasonic reactor and sonicated until the reaction system mixture changed from blue to black, titrated the reacted mixed solution with sodium hydroxide solution to pH = 11, and then magnetically stirred After the reaction, ethanol and distilled water were added to wash several times to obtain solid black particles, and the collected solid black particles were dried in an oven at 60°C for 12 hours, and then the obtained flake samples were put into a tube furnace under Calcini...

Embodiment 3

[0065] a Cu 2 O / MWCNTs composite material, the Cu in the composite material 2 O nanoparticles grow disorderly inside and on the surface of MWCNTs.

[0066] Cu as claimed in claim 1 2 The preparation method of O / MWCNTs composite material: method steps are as follows:

[0067] 1) Pretreatment of porous-walled carbon nanotubes: Add MWCNTs and concentrated nitric acid sequentially into a 250mL three-necked flask. MWCNTs acidified with concentrated nitric acid;

[0068] 2) Cu 2 Preparation of O / MWCNTs composites: Add MWCNTs to distilled water, ultrasonically disperse for 1 h, and then add CuSO 4 ·5H 2 O and PEG, magnetically stirred until completely dissolved; placed in an ultrasonic reactor and sonicated until the reaction system mixture changed from blue to black, titrated the reacted mixed solution with sodium hydroxide solution to pH = 11, and then magnetically stirred After the reaction, ethanol and distilled water were added to wash several times to obtain solid black ...

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Abstract

The invention discloses a Cu2O / MWCNTs composite material, and a preparation method and catalytic application thereof. The Cu2O / MWCNTs composite material is synthesized by using a simple method, and Cu2O nanoparticles grow on the surfaces of and in MWCNTs in a disordered manner. According to the invention, a hydrothermal method is employed, no surfactant is added, and usage of traditional electroplating or chemical plating methods is avoided, so little pollution is produced; the preparation method is simple, green and environment-friendly; reactions are easy to control; no expensive equipment is needed; and the preparation method is suitable for industrial production. The Cu2O / MWCNTs composite material prepared in the invention has strong promotion effect on thermal decomposition of ammonium perchlorate, decreases the thermal decomposition temperature of ammonium perchlorate, accelerates the decomposition speed of ammonium perchlorate and allows ammonium perchlorate to be decomposed in a short period of time.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a Cu 2 O / MWCNTs composite materials and their preparation methods and applications of catalytic properties. Background technique [0002] Carbon nanotubes (CNTs) are a new type of carbon material, which can be divided into single-walled carbon nanotubes (SWCNTs), double-walled carbon nanotubes (DWCNTs) and multi-walled carbon nanotubes (MWCNTs). Carbon nanotubes have unique electrical and thermal conductivity properties, coupled with high specific surface, adjustable nano-hollow cavity structure and good stability, so as a carrier of supported catalysts in catalytic hydrogenation, dehydrogenation It has a good application prospect in the field of electrocatalysis. The pore diameter of nanotubes is mostly mesopores, and since carbon nanotubes are evolved from graphite, they are mainly composed of coaxial circular tubes with several to dozens of layers of carbon atoms arran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/72
CPCB01J23/72
Inventor 高圣涛
Owner ANHUI UNIV OF SCI & TECH
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