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Method for preparing cobaltosic oxide nanorod by using microemulsion

A technology of cobalt trioxide and microemulsion method, which is applied in the field of Co3O4 porous nanorods and Co3O4 nanorods, which can solve the problems of long process, unsuitable for large-scale industrial production, and complicated experimental equipment, and achieve uniform particle size distribution, cheap experimental raw materials, Simple Effects of Experimental Equipment

Inactive Publication Date: 2011-07-06
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages are: it is difficult to remove anions in the solution, and the reaction rate is not easy to control, and the obtained particles have a wide particle size distribution and poor dispersibility.
However, the technical process of this method is too long, and there are many factors affecting the reaction, so it is not suitable for industrialized large-scale production.
At present, nano-Co 3 o 4 In the process, most of them are used in combination with the hydrothermal method, the experimental equipment is complicated and the cost is high

Method used

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  • Method for preparing cobaltosic oxide nanorod by using microemulsion
  • Method for preparing cobaltosic oxide nanorod by using microemulsion
  • Method for preparing cobaltosic oxide nanorod by using microemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) Weigh 0.8328g of CoCl 2 ·6H 2 O (analytically pure, content ≥ 99.0%), add 70mL deionized water to prepare 0.05M CoCl 2 aqueous solution;

[0047] 2) Add 5g CTAB (analytical pure, content ≥99.0%), 2.5g n-butanol (analytical pure, content ≥99.0%), and 5g cyclohexane (analytical pure, content ≥99.5%) to the prepared CoCl 2 The solution was magnetically stirred at room temperature for 30-60 minutes, and the solution was observed to change from turbid to transparent, and microemulsion I was prepared.

[0048]3) add wherein account for the whole microemulsion system (this system is the summation of microemulsion I and microemulsion II, excluding polyethylene glycol) gross mass 40% polyethylene glycol (chemically pure, content ≥ 99.9%), The dropping rate is 2mL / min, stir evenly;

[0049] 4) Weigh 0.6304g of H 2 C 2 o 4 2H 2 O (analytically pure, content ≥ 99.5%), add 50mL deionized water to prepare 0.1M H 2 C 2 o 4 aqueous solution;

[0050] 5) 5gCTAB (analytica...

Embodiment 2

[0056] 1) Weigh 0.8328g of CoCl 2 ·6H 2 O (analytically pure, content ≥ 99.0%), add 70mL deionized water to prepare 0.05M CoCl 2 aqueous solution;

[0057] 2) Add 5g CTAB (analytical pure, content ≥99.0%), 2.5g n-butanol (analytical pure, content ≥99.0%), and 5g cyclohexane (analytical pure, content ≥99.5%) to the prepared CoCl 2 The solution was magnetically stirred at room temperature for 30-60 minutes, and the solution was observed to change from turbid to transparent, and microemulsion I was prepared.

[0058] 3) adding thereto accounted for the whole microemulsion system (this system is the summation of microemulsion I and microemulsion II, excluding polyethylene glycol) gross mass 20% polyethylene glycol (chemically pure, content ≥ 99.9%), The dropping rate is 2mL / min, stir evenly;

[0059] 4) Weigh 0.6304g of H 2 C 2 o 4 2H 2 O (analytically pure, content ≥ 99.5%), add 50mL deionized water to prepare 0.1M H 2 C 2 o 4 aqueous solution;

[0060] 5) 5gCTAB (ana...

Embodiment 3

[0066] 1) Weigh 0.8328g of CoCl 2 ·6H 2 O (analytically pure, content ≥ 99.0%), add 70mL deionized water to prepare 0.05M CoCl 2 aqueous solution;

[0067] 2) Add 5g CTAB (analytical pure, content ≥99.0%), 2.5g n-butanol (analytical pure, content ≥99.0%), and 5g cyclohexane (analytical pure, content ≥99.5%) to the prepared CoCl 2 The solution was magnetically stirred at room temperature for 30-60 minutes, and the solution was observed to change from turbid to transparent, and microemulsion I was prepared.

[0068] 3) add wherein account for the whole microemulsion system (this system is the summation of microemulsion I and microemulsion II, excluding polyethylene glycol) gross mass 30% polyethylene glycol (chemically pure, content ≥ 99.9%), The dropping rate is 2mL / min, stir evenly;

[0069] 4) Weigh 0.6304g of H 2 C 2 o 4 2H 2 O (analytically pure, content ≥ 99.5%), add 50mL deionized water to prepare 0.1M H 2 C 2 o 4 aqueous solution;

[0070] 5) 5gCTAB (analytic...

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Abstract

The invention discloses a method for preparing a cobaltosic oxide nanorod by using microemulsion. A double microemulsion system and a single emulsion system are provided, wherein the double microemulsion system consists of a microemulsion I and a microemulsion II; each of the microemulsion I and the microemulsion II consists of CTAB (Cetyltrimethyl Ammonium Bromide) serving as a surfactant, normal butanol serving as a cosurfactant, oil phase cyclohexane and a water phase; the mass ratio of the oil phase to the water phase is 1:20-20:1; and in the microemulsion I, the water phase is a CoCl2 aqueous solution; in the microemulsion II, the water phase is an H2C2O4 solution. Polyethylene glycol serving as a dispersant is added into the system, wherein the polyethylene glycol accounts for 10-80 percent by mass of the entire microemulsion system (the double microemulsions comprise the microemulsion I and the microemulsion II, the single microemulsion comprises the microemulsion I, and the double microemulsions and the single microemulsion do not comprise the polyethylene glycol). The single microemulsion system consists of the microemulsion I and the H2C2O4 aqueous solution, and the composition of the microemulsion I is the same as that of the microemulsion I in the double microemulsions. By adopting the method, the diameter of the obtained nanorod is between 70 nanometers and 150 nanometers, and the length is between 1 mu m and 3 mu m.

Description

technical field [0001] The present invention relates to the method for tricobalt tetroxide nanorod, relate in particular to prepare the porous Co 3 o 4 Nanorods, adding polyethylene glycol as a dispersant to the system can prepare Co 3 o 4 Porous nanorods, the prepared porous nanorods can be used to make electrode materials or catalyst carrier materials. Background technique [0002] Nanomaterials refer to materials with a particle size between 1-100nm. Due to the superfineness of nanoparticles, the arrangement of surface molecules, electron distribution and crystal structure have all changed, and have unique characteristics such as quantum effects, small size effects, surface effects and macroscopic tunnel quantum effects, and have a series of excellent properties. Excellent physical, chemical and surface interface properties can achieve excellent results when used. Nano-metal oxide materials have also attracted people's attention because of their good properties, nano...

Claims

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Application Information

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IPC IPC(8): C01G51/04B82Y40/00B01J23/75B01J32/00
Inventor 王峰璩洁荷吉静刘景军王建军覃事永张良虎
Owner BEIJING UNIV OF CHEM TECH
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