Transitional metal oxide/nitrogen-doped ordered mesoporous carbon composite material and preparation method thereof

A technology of transition metals and composite materials, applied in the preparation/purification of carbon, chemical instruments and methods, iron compounds, etc., can solve the problems of weak electrical conductivity, low energy density and power density, poor stability, etc., and achieve clear channels, The effect of controllable product size and low cost

Active Publication Date: 2018-11-20
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its electrical conductivity is weak, energy density and power density are low and stability is poor

Method used

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  • Transitional metal oxide/nitrogen-doped ordered mesoporous carbon composite material and preparation method thereof
  • Transitional metal oxide/nitrogen-doped ordered mesoporous carbon composite material and preparation method thereof
  • Transitional metal oxide/nitrogen-doped ordered mesoporous carbon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of SBA-15: Add concentrated hydrochloric acid and deionized water to P123, magnetically stir for 4 h under temperature control at 40 °C, add tetraethyl orthosilicate and mix well, concentrated hydrochloric acid: deionized water: P123: positive The mass ratio of ethyl silicate is 1 : 0.2 : 0.025: 0.07-0.09, the temperature is controlled at 100 ℃ for hydrothermal reaction for 24 h, after suction filtration, washing, drying and calcination at high temperature 500 ℃ for 6 h, the white powder SBA- 15;

[0043] 2. Preparation of precursor nitrogen-doped ordered mesoporous carbon: a. Add sugar, concentrated sulfuric acid, and water to the SBA-15 obtained in step 1, and ultrasonically pre-mix for 20 min. b. Add the mixed solution of urea and hexamethylenetetramine, ultrasonically mix and heat. C, add these four kinds of substances of the mixed solution of sucrose, concentrated sulfuric acid, water, urea and hexamethylenetetramine successively, wherein deionized ...

Embodiment 2

[0050] 1. Preparation of SBA-15: Add concentrated hydrochloric acid and deionized water to P123, magnetically stir for 4 h under temperature control at 40 °C, add tetraethyl orthosilicate and mix well, concentrated hydrochloric acid: deionized water: P123: positive The mass ratio of ethyl silicate is 1 : 0.2 : 0.025: 0.07-0.09, the temperature is controlled at 100 ℃ for hydrothermal reaction for 24 h, after suction filtration, washing, drying and calcination at high temperature 500 ℃ for 6 h, the white powder SBA- 15;

[0051] 2. Preparation of precursor nitrogen-doped ordered mesoporous carbon: a. Add sugar, concentrated sulfuric acid, and water to the SBA-15 obtained in step 1, and ultrasonically pre-mix for 25 minutes. b. Add the mixed solution of urea and hexamethylenetetramine, ultrasonically mix and heat. C, add these four kinds of substances of the mixed solution of sucrose, concentrated sulfuric acid, water, urea and hexamethylenetetramine successively, wherein deioni...

Embodiment 3

[0056] 1. Preparation of SBA-15: Add concentrated hydrochloric acid and deionized water to P123, magnetically stir for 4 h under temperature control at 40 °C, add tetraethyl orthosilicate and mix well, concentrated hydrochloric acid: deionized water: P123: positive The mass ratio of ethyl silicate is 1 : 0.2 : 0.025: 0.07-0.09, the temperature is controlled at 100 ℃ for hydrothermal reaction for 24 h, after suction filtration, washing, drying and calcination at high temperature 500 ℃ for 6 h, the white powder SBA- 15;

[0057] 2. Preparation of precursor nitrogen-doped ordered mesoporous carbon: a. Add sugar, concentrated sulfuric acid, and water to the SBA-15 obtained in step 1, and pre-mix by ultrasonic for 30 min. b. Add the mixed solution of urea and hexamethylenetetramine, ultrasonically mix and heat. C, add these four kinds of substances of the mixed solution of sucrose, concentrated sulfuric acid, water, urea and hexamethylenetetramine successively, wherein deionized w...

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Abstract

The invention discloses a transitional metal oxide/nitrogen-doped ordered mesoporous carbon composite material and a preparation method thereof. The preparation method comprises the following steps: carrying out inert gas calcining and removing a template to obtain nitrogen-doped ordered mesoporous carbon first by taking a mesoporous molecular sieve SBA-15 as the template, a saccharide carbohydrate as a carbon source and urea and hexamethylenetetramine as a nitrogen source; and then adding a transitional metal salt solution and introducing inert gas to calcine to obtain the transitional metaloxide/nitrogen-doped ordered mesoporous carbon composite material. The preparation method disclosed by the invention is low in cost and easy to operate. The nitrogen-doped ordered mesoporous carbon prepared by the method is clear in pore, proper in pore diameter and large in specific surface area, and nanoparticles of the transitional metal oxide are uniformly distributed and high in capacity. Thetransitional metal oxide/nitrogen-doped ordered mesoporous carbon composite material is excellent in electrochemical property and has a wide market prospect in the fields such as catalysts, electricity and heat conduction and energy-storage materials.

Description

technical field [0001] The invention relates to the technical field of preparation of ordered mesoporous carbon composite materials, and more specifically relates to a transition metal oxide / nitrogen-doped ordered mesoporous carbon composite material and a preparation method thereof. Background technique [0002] Carbon materials have the advantages of abundant raw materials, large specific surface area, high temperature resistance, acid and alkali resistance, and good electrical conductivity. Ordered mesoporous carbon materials, as an important branch of porous carbon materials, are nanostructured materials of metastable carbon crystals, with high specific surface area, narrow pore size distribution, uniform and orderly pore connection, and chemical and thermal stability. Good performance, can prepare catalyst carrier, hydrogen storage material, adsorption separation and electrode material, etc. However, the surface of carbon materials is chemically inert, which limits the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/00C01B32/05B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G49/0018C01P2002/72C01P2004/04C01P2004/64C01P2006/12C01P2006/16C01P2006/40C01B32/05
Inventor 项东王诗涵孙浩森石磊
Owner SHANDONG JIANZHU UNIV
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