Green synthetic method of controllable superfine metal oxide/carbon nano tube composite material

A composite material, metal salt technology, applied in the field of green synthesis of controllable ultrafine metal oxide/carbon nanotube composites, can solve the precise variables of nanoparticle growth, poorly understood, difficult nanoparticle growth rate, limitations Application performance research and other issues, to achieve uniform and stable solid loading, simple preparation technology, and low equipment requirements

Inactive Publication Date: 2011-05-04
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the synthesis methods of various heterostructure carbon tube composites, the existing difficulties mainly include: (1) it is difficult to control the growth rate, density and deposition position of nanoparticles on the surface of carbon tubes; (2) the growth of heterostructures Most of the mechanisms are guesses, and little is known about the precise variables of nanoparticle growth on the surface of carbon tubes; (3) There are difficulties in large-scale preparation, which limits the research on application performance; (4) It is necessary to develop green and environmentally friendly synthetic methods

Method used

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  • Green synthetic method of controllable superfine metal oxide/carbon nano tube composite material
  • Green synthetic method of controllable superfine metal oxide/carbon nano tube composite material
  • Green synthetic method of controllable superfine metal oxide/carbon nano tube composite material

Examples

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example 1

[0015] Example 1: 3.75mmol TiOCl 2 And 0.5mL of concentrated hydrochloric acid in 9mL N, N dimethylformamide (DMF) solvent prior reaction to form a hydrated hydrochloric acid double salt precursor, add 1.68g of phenol and 0.3g of acid-treated multi-walled carbon tubes (MWCNT) , the mixture was slowly reacted in an oil bath at 65-70°C for 2-6 days, and the product was filtered, washed, and dried naturally to obtain TiO 2 / CNT composites.

example 2

[0016] Example 2: 0.78g ZrOCl 2 ·8H 2 O and 0.5mL of concentrated hydrochloric acid were reacted in advance in 9mL of N,N dimethylformamide (DMF) solvent to form a hydrated hydrochloric acid double salt precursor, and 1.14g of phenol and 0.3g of acid-treated multi-walled carbon tubes (MWCNT ), the mixture was slowly reacted in an oil bath at 70-90°C for 2-4 days, and the product was filtered, washed, and dried naturally to obtain ZrO 2 / CNT composites.

example 3

[0017] Example 3: 1.515g Fe (NO 3 ) 3 9H 2 O was dissolved in 100mL of N,N dimethylformamide (DMF) solvent, 1.14g of phenol and 0.3g of acid-treated multi-walled carbon tubes (MWCNT) were added, and the resulting suspension was transferred to a in a polytetrafluoroethylene reactor and placed in an oven at 180°C for a constant temperature reaction of 1-3 days, the product was filtered, washed, and naturally dried to obtain Fe 2 o 3 / CNT composites.

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Abstract

The invention discloses a green synthetic method suitable for preparing a controllable superfine metal oxide/carbon nano tube composite material, relating to the field of nano science and catalytic composite materials. An active phase comprises multifunctional oxides of TiO2, ZrO2 and Fe2O3. The synthetic method comprises the following steps of: pretreating corresponding metal salts of TiOCl2, ZrOCl2 and Fe(NO3)3 in a DMF(Dimethyl Formamide) solution to form a precursor; adding phenol as a surfactant in the precursor; adding a multi-wall carbon nano tube treated with a proper amount of acid; carrying out slow hydrolytic polymerization and depositing under the condition of heating to form a TiO2/CNT (Carbon Nano Tube), ZrO2/CNT and Fe2O3/CNT / composite material. The method has general applicability to realizing that multifunctional nano metal oxides which are convenient to obtain through hydrolysis are compounded with carbon tubes with hydrophobe surfaces; and the obtained nano composite material is possibly applied to various catalytic fields.

Description

technical field [0001] The invention relates to the field of nanoscience and composite oxide catalytic materials, and is an important direction for the development of new high-efficiency catalytic materials, especially the green synthesis of metal oxide / carbon nanotube composite materials that can be hydrolyzed by metal salt precursors method. Background technique [0002] Carbon nanotubes have attracted extensive and interdisciplinary attention since their superior electronic and mechanical properties were reported. Recently, material workers have focused on the development of chemical modification methods, with the goal of obtaining carbon nanotube derivatives with more superior and interesting properties. So far, a large number of carbon nanotube derivatives have been prepared and characterized, and they show broad application prospects in the fields of nanobiotechnology, energy conversion and storage, nanocatalysis and nanoelectronic devices. [0003] Metal oxides are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00B82B1/00B01J37/08B01J37/10B01J21/18B01J21/06B01J23/745B01J32/00
Inventor 官轮辉许交兴
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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