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A kind of preparation method of copper nanoparticle loaded carbon sphere composite material

A technology of copper nanoparticles and composite materials, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of time-consuming and labor-intensive, catalyst poisoning, etc. Ease of promotion

Active Publication Date: 2015-10-28
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, when nanoparticles are coated with diblock copolymers, the surface of the nanoparticles eventually forms a layer of carbon or carbides, which can lead to catalyst poisoning during use if the nanoparticles are not further processed
However, it is very time-consuming and labor-intensive to treat the surface of these particles. How to obtain nanoparticles with clean surfaces in one step is particularly important.

Method used

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  • A kind of preparation method of copper nanoparticle loaded carbon sphere composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Dissolve 0.015 grams of copper chloride and 0.7 grams of chitosan in 20 milliliters of distilled water, stir until completely dissolved, then mix the above two solutions, ultrasonically oscillate for 15 minutes at room temperature, and put the oscillating mixed liquid into 50 milliliters In the stainless steel water heating tank lined with polytetrafluoroethylene, after tightening the lid, put the water heating tank in an oven at 175°C, keep warm for 4 hours, take the water heating tank out of the oven, place it in the air to cool to room temperature, and then Open the hydrothermal tank, pour out the mixture inside, centrifuge in a centrifuge at 4000 rpm to obtain a precipitate, then wash it repeatedly with water and ethanol, and dry it in a drying oven at 60°C for 12 hours; finally, put the powder into alumina Burn the boat, calcine in a tube furnace under an argon atmosphere, with a heating rate of 10°C min -1 , the holding temperature is 300°C, the holding time is 10...

Embodiment 2

[0021] Dissolve 0.4 g of cuprous iodide and 0.1 g of citric acid in 20 ml of distilled water, stir until completely dissolved, then mix the above two solutions, ultrasonically oscillate for 15 minutes at room temperature, and put the oscillated mixed liquid into 50 ml In the stainless steel water heating tank lined with polytetrafluoroethylene, after tightening the lid, put the water heating tank in an oven at 120 ℃, keep warm for 9 hours, take the water heating tank out of the oven, put it in the air to cool to room temperature, and then Open the hydrothermal tank, pour out the mixture inside, centrifuge in a centrifuge at 4000 rpm to obtain a precipitate, then wash it repeatedly with water and ethanol, and dry it in a drying oven at 60°C for 12 hours; finally, put the powder into alumina Burn the boat, calcine in a tube furnace under an argon atmosphere, with a heating rate of 10°C min -1 , the holding temperature was 500°C, the holding time was 19 hours, and the product was...

Embodiment 3

[0023] Dissolve 0.5 grams of copper sulfate and 0.7 grams of maltose in 20 milliliters of distilled water, stir until completely dissolved, then mix the above two solutions, oscillate ultrasonically for 15 minutes at room temperature, and put the shaken mixed liquid into 50 milliliters of polytetrafluoroethylene In the vinyl-lined stainless steel water heating tank, after tightening the lid, put the water heating tank in an oven at 220°C, keep warm for 24 hours, take the water heating tank out of the oven, place it in the air to cool to room temperature, and then put the water heating tank Open it, pour out the mixture inside, centrifuge in a centrifuge at 4000 rpm to obtain a precipitate, then wash it repeatedly with water and ethanol, and dry it in a drying oven at 60°C for 12 hours; finally, put the powder into an alumina burning boat, Calcination was carried out in a tube furnace under an argon atmosphere with a heating rate of 10°C min -1 , the holding temperature is 550°...

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Abstract

The invention provides a composite material in which carbon spheres are loaded with copper nanoparticles and a preparation method of the composite material, and belongs to the technical field of composite powder preparation. The surfaces of the carbon spheres are loaded with the copper nanoparticles, the copper nanoparticles are not coated with organic matter, the surfaces of the copper nanoparticles are clean, the size of the carbon spheres and the size of the copper nanoparticles are adjustable, the size of the carbon spheres ranges from 100 nanometers to 100 micrometers, and the size of the copper nanoparticles ranges from 1 nanometer to 30 nanometers. The preparation method includes the steps that copper salt, carbon sources and deionized water serve as raw materials, wherein the Molar ratio of the copper salt to the carbon sources ranges from 0.01 to 100; mixed liquid is placed in a hydrothermal reaction kettle and kept warm for 2 hours to 50 hours at the temperature ranging from 80 DEG C to 250 DEG C; the reaction kettle is taken out and cooled to be at indoor temperature, and sediments are poured out, cleaned and dried in a drying cabinet; eventually, powder is placed in an aluminum oxide combustion boat, calcined in a tube furnace under the protective atmosphere, heat-preserved for 0.5 hour to 10 hours at the temperature ranging from 300 DEG C to 900 DEG C, and naturally cooled to be at indoor temperature, and products are obtained. The preparation method has the advantages that organic surface active agents are not used, and the composite material in which the carbon spheres are loaded with the copper nanoparticles with the clean surfaces can be quickly obtained.

Description

technical field [0001] The invention belongs to the technical field of composite powder preparation, and in particular relates to a new copper nanoparticle-loaded carbon sphere composite material and a preparation method thereof. Background technique [0002] Copper is rich in reserves and low in price, and copper-based nanocrystals and composite materials have attracted more and more people's attention and attention. Copper nanoparticles are an excellent catalyst and electrocatalyst, how to prepare ideal copper nanoparticles is of great significance. Commonly used nanoparticle preparation methods include vacuum thermal vapor deposition, electron beam lithography, laser pulse deposition, buffer layer assisted growth, chemical vapor deposition, gas condensation and cluster ion beam condensation technology, electrochemical deposition, sol-gel method, Deposition - Precipitation and impregnation. Although a lot of literature shows that these techniques can prepare reliable and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/02B82Y30/00
Inventor 秦明礼贾宝瑞曲选辉张自利储爱民章林刘烨鲁慧峰
Owner UNIV OF SCI & TECH BEIJING