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Method for loading nanocrystalline metal oxide or nanocrystalline metal materials by porous carbon

A technology of nano metal and metal material, applied in the field of porous carbon supported nano metal oxide or nano metal material

Inactive Publication Date: 2014-05-21
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, traditional synthesis methods cannot be widely used in the preparation of various nano-metals or oxides due to the limitation of preparation methods.

Method used

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  • Method for loading nanocrystalline metal oxide or nanocrystalline metal materials by porous carbon
  • Method for loading nanocrystalline metal oxide or nanocrystalline metal materials by porous carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Porous carbon loaded nano-Fe

[0025] Synthetic raw materials: glucose, urea, Fe(NO 3 ) 3? 9H 2 O (iron nitrate)

[0026] (1) Weigh 10 g glucose, 1 g urea and 0.1 g Fe(NO 3 ) 3? 9H 2 O in a 100 mL beaker, then place the beaker in a heatable magnetic stirrer. The temperature of the magnetic stirrer was raised to 100° C., and the stirring was continued for 60 min until the medicine in the beaker was in a molten state.

[0027] (2) From the molten liquid mentioned in (1), take out a part of the solution and put it in a 120°C oven as sample A, and put the other part of the solution into a high-temperature reaction kettle and put it in a 120°C oven as sample B, and react for 48 hours. A dark brown bulky solid was obtained, and sample B was dark brown dense solid.

[0028] (3) Grind the sample A and sample B obtained in (2) with a mortar, and divide them into two crucibles, and then put them under N 2 Heat treatment at 550°C for 7 hours under protection to...

experiment example 2

[0031] Experimental example 2: Porous carbon supported nano-SnSb alloy

[0032] Synthetic raw materials: glucose, urea, SnCl 2? 2H 2 O (Stannous Chloride), SbCl 3 (antimony chloride)

[0033] (1) Weigh 1 g glucose, 10 g urea, 0.3 g SnCl 2? 2H 2 O and 0.3 g SbCl 3 In a 100 mL beaker, then place the beaker in a heatable magnetic stirrer. The temperature of the magnetic stirrer was raised to 220°C, and the stirring was continued for 60 min until the drug in the beaker formed a molten state.

[0034] (2) Afterwards, put the beaker into an oven at 250°C and react for 1 hour to obtain a dark brown puffy solid.

[0035] (3) Grind the product obtained in (2) with a mortar and put it in a crucible. The product obtained by the reaction was heated at 250°C in 5% H 2 / N 2 Under the condition of heat treatment for 24 hours, the porous carbon-loaded nano-SnSb alloy is obtained.

[0036] figure 1 It is a TEM image of nano-SnSb alloy supported on porous carbon. In the figure, it ...

experiment example 3

[0038] Experimental example 3: Porous carbon supports nano-Pd

[0039] Synthetic raw materials: fructose, urea, Pd(NO 3 ) 2? 2H 2 O (palladium nitrate)

[0040] (1) Weigh 100 g fructose and 1 g urea into a 100 mL beaker, then place the beaker in a heatable magnetic stirrer. The temperature of the magnetic stirrer was raised to 180°C, and the stirring was continued for 10 min until the drug in the beaker formed a molten state.

[0041] (2) Weigh 0.1 g Pd(NO 3 ) 2? 2H 2 Add O into the molten liquid described in (1), and keep stirring for 8 min until the solution is clear. Afterwards, the molten liquid was added into a hydrothermal reaction kettle and placed in an oven at 180° C., and reacted for 24 hours to obtain a dark brown solid.

[0042] (3) Grind the product obtained in (2) with a mortar and put it in a crucible. The product obtained by the reaction was heated at 1100°C in 5%H 2 / N 2 After heat treatment for 3 hours under the same conditions, porous carbon-suppo...

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Abstract

The invention belongs to the technical field of nanometer material preparation, and relates to a method for loading nanocrystalline metal oxide or nanocrystalline metal materials by porous carbon. Urea derivatives, saccharides and metal salt can form the characteristics of even mixed solutions at certain temperature, the porous carbon is formed in situ after dehydration and carbonization, and then the nanocrystalline metal oxide or the nanocrystalline metal materials loaded by the porous carbon are prepared through high temperature treatment. According to the method, the raw material ratio, response time, heat treatment temperature and other synthesis condition are changed, and carrying type nanometer materials with the carrying amount, the size of the particle diameter, the crystalline phase and components simultaneously controllable can be obtained. The whole process has the advantages of being easy to operate, environmentally friendly, low in cost and the like, the obtained nanocrystalline metal oxide or nanocrystalline metal materials loaded by the porous carbon have wide application prospects in industrial catalysis, water treatment, electrochemistry and other aspects.

Description

technical field [0001] The invention provides a method for supporting nano metal oxides or nano metal materials on porous carbon, and belongs to the technical field of nano material preparation. Background technique [0002] Nanomaterials have unique properties that are obviously different from bulk materials and single molecules, such as: surface effect, volume effect, condensate size effect and macroscopic tunnel effect, etc., making them widely used in electronics, optics, chemical industry, ceramics, biology and medicine, etc. There are broad application prospects in all aspects. However, due to their high surface energy, nanoparticles are prone to sintering and agglomeration. Therefore, nanomaterials often require carriers to ensure their monodispersity and reduce the probability of sintering and agglomeration. Porous carbon materials have a developed pore structure, large specific surface area, more surface compounds and strong adsorption capacity, and also have a ser...

Claims

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Application Information

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IPC IPC(8): B22F9/16B22F9/22
Inventor 姜兴茂陈震张耕杨凤丽陆伟闵建中梁帅
Owner CHANGZHOU UNIV
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