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Synthesis method of mesoporous carbon nanosphere loaded manganous oxide material

A manganese oxide material and technology of synthesis method, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of increasing electrical conductivity, poor electrical conductivity, etc., and achieve high oxygen reduction catalytic activity, The method is simple and the preparation cost is low

Active Publication Date: 2017-09-12
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, manganese oxide itself is a semiconductor with poor conductivity, so it needs to be compounded with doped carbon materials to increase its conductivity, and the interaction between doped nitrogen and manganese oxide can improve the catalytic activity of the catalyst

Method used

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  • Synthesis method of mesoporous carbon nanosphere loaded manganous oxide material
  • Synthesis method of mesoporous carbon nanosphere loaded manganous oxide material
  • Synthesis method of mesoporous carbon nanosphere loaded manganous oxide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of SiO 2 @PANI material:

[0027] Weigh 1 g (NH 4 ) 2 S 2 o 4 Dissolve in 2 mL of water and set aside.

[0028] Take 1 mL of SiO 2 Mix sol (purchased from Sigma Aldrich), 10 mL ultrapure water, and 5 mL 1 mol / L HCl aqueous solution, then add 0.4 g of aniline to the mixture, sonicate for 1 h under ice-bath conditions, and then Stir for 20min; Then (NH 4 ) 2 S 2 o 4 The solution was added dropwise to the mixture, and stirred vigorously under ice bath for 24 h. After the reaction, the product was washed three times with absolute ethanol, and the solid phase was taken, that is, silicon dioxide coated with polyaniline (SiO 2 @PANI) and dried in a 50°C oven for later use.

[0029] (2) Preparation of MPNs material:

[0030] Take 0.4 g polyaniline coated silica (SiO 2 @PANI) was dissolved in 25 ml NaOH aqueous solution with a concentration of 0.5 mol / L, heated to 60 °C, stirred and reacted for 6 h, the product was washed three times with ultrapure ...

Embodiment 2

[0037] According to the method of steps (1) and (2) in Example 1, MPNs materials were obtained.

[0038] (3) Preparation of MnO@N-MCNs material:

[0039] Dissolve 0.1 g of mesoporous polyaniline (MPNs) in 40 mL of ultrapure water, sonicate for 20 min, adjust the pH to 1-2, and then add 10 mL of KMnO with a concentration of 0.1 mol / L 4 aqueous solution, at room temperature, stirred and reacted for 4 h, then washed three times with ultrapure water, took the solid phase and dried it in an oven at 50 °C to obtain polyaniline-supported manganese dioxide (MnO 2 @PANI).

[0040] in N 2 Under the conditions, the prepared polyaniline supported manganese dioxide (MnO 2 @PANI) was placed in a crucible and calcined at 900 °C for 2 h under the protection of nitrogen to obtain the MnO@N-MCNs material.

[0041] image 3 is the transmission electron microscope image of the calcined MnO@N-MCNs, by image 3 Visible: With KMnO 4 When the amount of aqueous solution was increased to 10 mL,...

Embodiment 3

[0043] According to the method of steps (1) and (2) in Example 1, MPNs materials were obtained.

[0044] (3) Preparation of MnO@N-MCNs material:

[0045]Dissolve 0.1 g of mesoporous polyaniline (MPNs) in 40 mL of ultrapure water, sonicate for 20 min, adjust the pH to 1-2, and then add 14 mL of KMnO with a concentration of 0.1 mol / L 4 aqueous solution, at room temperature, stirred and reacted for 4 h, then washed three times with ultrapure water, took the solid phase and dried it in an oven at 50 °C to obtain polyaniline-supported manganese dioxide (MnO 2 @PANI).

[0046] in N 2 Under the conditions, the prepared polyaniline supported manganese dioxide (MnO 2 @PANI) was placed in a crucible and calcined at 900 °C for 2 h under the protection of nitrogen to obtain the MnO@N-MCNs material.

[0047] Figure 4 is the transmission electron microscope image of the calcined MnO@N-MCNs, by Figure 4 Visible: join KMnO 4 When the aqueous solution was 14mL, the basic morphology o...

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Abstract

The invention relates to a synthesis method of a mesoporous carbon nanosphere loaded manganous oxide material, and relates to the technical field of preparation of a nanometer material. Water, a hydrochloric acid solution, aniline and silicon dioxide sol are subjected to ultrasonic mixing and are then mixed with ammonium persulfate for reaction; aniline coated silicon dioxide is obtained; through the mixing reaction with a sodium hydroxide water solution, mesoporous polyaniline is obtained; then, under the ultrasonic condition, the mesoporous polyaniline with the pH value being 1 to 2 reacts with a potassium permanganate water solution under the stirring condition to obtain aniline loaded manganese dioxide; under the nitrogen gas protection, 900 DEG C calcination is performed to obtain the mesoporous carbon nanosphere loaded manganous oxide material. The synthesis method has the advantages that the method is simple and convenient; the preparation cost is low; the product has the good appearance features and also has high oxygen reduction catalysis activity; the important application values are realized in the fields of catalysis and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of nanometer materials. Background technique [0002] Today's world economy is developing rapidly and science and technology are constantly being updated. However, behind this brilliant achievement is the rapid consumption of fossil energy and the aggravation of environmental pollution. Since modern times, electric energy has been used by people in all walks of life and has become an indispensable part of human production and life. In China, power generation is mainly thermal power and hydropower. Thermal power generation relies on the consumption of fossil energy. Fossil energy is a one-time non-renewable energy with limited reserves, and the nitrogen oxides and sulfur oxides produced after combustion will cause immeasurable damage to the environment. [0003] As the fourth-generation power generation technology after thermal power, hydraulic power, and nuclear power, fuel cells have been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/96B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8817H01M4/8878H01M4/96Y02E60/50
Inventor 韩杰刘英伟郭荣
Owner YANGZHOU UNIV
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