Preparation method of pod-shaped carbon nanotube encapsulation non-noble metal nano-particles

A carbon nanotube and non-precious metal technology, which is applied in the field of preparation of pod-shaped carbon nanotube-encapsulated non-precious metal nanoparticle, can solve the problem of nanoparticle instability, difficulty in preparing dispersed non-precious metal nanoparticle, easy to be oxidized and agglomerated and other problems, to achieve the effect of simple method, easy to scale up production and easy operation

Active Publication Date: 2013-06-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used preparation methods of metal nanoparticles include evaporation condensation method, ion sputtering method, mechanical grinding method, chemical precipitation method, ray irradiation synthesis method, etc. ("Preparation methods and applications of nanomaterials" Sun Yuxiu, Zhang Dawei, Jin Zhengwei China Textile Press 2010), however, these methods have a common shortcoming that the prepared nanoparticles, especially non-noble metal nanoparticles, are extremely unstable in the atmosphere and are easily oxidized and agglomerated.
At present, it is difficult to prepare non-noble metal nanoparticles that are well dispersed and stable in the atmosphere.

Method used

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  • Preparation method of pod-shaped carbon nanotube encapsulation non-noble metal nano-particles
  • Preparation method of pod-shaped carbon nanotube encapsulation non-noble metal nano-particles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Seal 3.0 g of sodium azide and 3.0 g of ferrocene into a 40 mL autoclave under nitrogen protection.

[0030] 2. Keep the autoclave in (1) at 350° C. for 4 hours.

[0031] 3. Treat the sample obtained in (2) with 18% (mass concentration) hydrochloric acid solution for 5 hours. Then wash with water and ethanol several times and filter.

[0032] 4. Dry the sample obtained in (3) at 120° C. for 12 hours to obtain the pod iron nanomaterial.

[0033] One reaction can obtain 1.4 grams of pure pod iron nanomaterials. TEM (see figure 1 ), X-ray diffraction spectrum (see figure 2 ) and X-ray photoelectron spectroscopy (see image 3 ) shows that the obtained sample has a pod-like structure, and the encapsulated iron nanoparticles are elemental.

Embodiment 2

[0035] 1. Seal 1.0g of lithium nitride and 3.0g of ferrocene into a 40mL autoclave under nitrogen protection.

[0036] 2. Keep the autoclave in (1) at 450° C. for 6 hours.

[0037] 3. Same as step 3 of embodiment 1.

[0038] 4. Same as step 4 of embodiment 1.

[0039] One reaction can obtain 1.1 grams of pure pod iron nanomaterials. Analytical tests (transmission electron microscope, X-ray diffraction spectrum and X-ray photoelectron spectrum) show that the obtained sample has a pod-like structure, and the encapsulated iron nanoparticles are in a single state.

Embodiment 3

[0041] 1. Seal 2.0g of sodium and 3.5g of cobaltocene into a 40mL autoclave under argon protection.

[0042] 2. Keep the autoclave in (1) at 250° C. for 10 hours.

[0043] 3. Same as step 3 of embodiment 1.

[0044] 4. Same as step 4 of embodiment 1.

[0045] One reaction can obtain 1.6 grams of pure pod iron nanomaterials. Analytical tests (transmission electron microscope, X-ray diffraction spectrum and X-ray photoelectron spectrum) show that the obtained sample has a pod-like structure, and the encapsulated cobalt nanoparticles are in a simple state.

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Abstract

The invention discloses a preparation method of pod-shaped carbon nanotube encapsulation non-noble metal nano-particles. Particularly, the preparation method is based on a solvothermal method, and the non-noble metal nano-particles are generated through the direct reaction of alkali metal or derivatives and second metallocene compounds at low temperature. The prepared carbon nanotube is in a neat pod-shaped structure, and the metal nano-particles are in an elementary substance state. The preparation method of the pod-shaped carbon nanotube encapsulation non-noble metal nano-particles has the advantages of being simple and easy to operate and control.

Description

technical field [0001] The invention relates to a preparation method of pod-shaped carbon nanotubes encapsulating non-noble metal elemental nanoparticles. Background technique [0002] Metal nanoparticles have attracted extensive attention of researchers due to their unique physical and chemical properties such as size effect and quantum effect, and they have been widely used in physics, chemistry, biology and other fields ("Nanotechnology Preparation Methods" (US) Edward L. Wolf, translated by Xue Dongfeng, Machinery Industry Press, 2010). [0003] At present, the commonly used preparation methods of metal nanoparticles include evaporation condensation method, ion sputtering method, mechanical grinding method, chemical precipitation method, ray irradiation synthesis method, etc. ("Preparation methods and applications of nanomaterials" Sun Yuxiu, Zhang Dawei, Jin Zhengwei China Textile Press 2010), however, these methods have a common shortcoming that the prepared nanoparti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/00B22F1/02C01B31/02C01B32/16
Inventor 包信和邓德会潘秀莲陈晓琪
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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