Cu/Cu2O core-shell composite microsphere and preparation method thereof

A technology of core-shell composite microspheres and composite microspheres, which is applied in the field of Cu/Cu2O core-shell composite microspheres and its preparation, can solve the problems of high toxicity of raw materials, difficulty in recycling, and environmental pollution, and is beneficial to non-toxic production and Environmental protection, solve the effect that is not easy to recycle

Inactive Publication Date: 2012-02-15
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: to provide a kind of Cu as the core, Cu 2 Cu / Cu with O as shell 2 The preparation method of O core-shell composite microspheres, that is, the reflux process is adopted in the ethylene glycol-water system, and the anionic surfactant sodium dodecylsulfonate is used to assist the synthesis of Cu / Cu 2 O core-shell composite microspheres to overcome the defects of the existing methods, such as high toxicity of raw materials, complicated process, environmental pollution, difficulty in large-scale production, small particle size of the product, and difficulty in recycling.

Method used

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  • Cu/Cu2O core-shell composite microsphere and preparation method thereof
  • Cu/Cu2O core-shell composite microsphere and preparation method thereof
  • Cu/Cu2O core-shell composite microsphere and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Dissolve 0.02 mol of copper chloride in 20 mL of water to prepare a copper chloride solution; in addition, dissolve 1 g of sodium dodecyl sulfonate and 0.0133 mol of glucose in 30 mL of ethylene glycol to prepare dodecyl sulfonate Sodium-glucose-glycol solution; then mix the copper chloride solution with the sodium lauryl sulfonate-glucose-glycol solution, add it to a flask with a reflux device, stir evenly, and prepare copper chloride -Sodium dodecyl sulfonate-glucose-ethylene glycol-water mixture.

[0032] (2) Dissolve 0.04 moles of sodium hydroxide in 10 mL of water, and then add 30 mL of ethylene glycol to prepare a sodium hydroxide-ethylene glycol-water mixture.

[0033] (3) Under stirring, add the mixture prepared in step (2) to the flask in step (1), and under the protection of nitrogen, heat to reflux temperature, reflux for 48 hours, stop stirring and heating.

[0034] (4) Let the product obtained in the previous step stand at room temperature for 15 hours, then ...

Embodiment 2、 example 3、 example 4

[0038] The reflow time in step (3) in Example 1 was changed to 12h, 24h, 36h, and the other operations were the same as in Example 1. The resulting Cu / Cu 2 The average particle size of the O core-shell composite microspheres were 348μm, 378μm, and 400μm respectively.

Embodiment 5

[0040] Step (1) C in Example 1 6 H 12 O 6 The dosage was changed to 0.01 mole, the other steps were the same as in Example 1, and the product obtained was the same as in Example 1.

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Abstract

The invention relates to a Cu / Cu2O core-shell composite microsphere and a preparation method thereof. The core-shell composite microsphere is composed of a core and a shell and has an average grain size of 300-500 microns, wherein porous Cu is taken as the core and 200-nanometer cubic Cu2O is taken as the shell. The preparation method of the core-shell composite microsphere comprises the following steps: while stirring, adding a mixed solution of precipitant, ethylene glycol and water into a mixed solution of nantokite, sodium dodecyl sulfate, reducing agent, ethylene glycol and water, and performing reflux reaction for 12-48 hours; standing for 0-15 hours at room temperature, and then washing and filtering; and drying an acquired product, thereby acquiring the Cu / Cu2O core-shell composite microsphere. A simple reflux method is adopted to prepare the Cu / Cu2O core-shell composite microsphere and a cuprous oxide in smaller grain size is attached to the surface of a copper sphere carrierin bigger grain size, thereby efficiently solving the difficulty in recycling cuprous oxide powder. Besides, the raw materials are cheap and easily acquired.

Description

Technical field [0001] The technical scheme of the present invention relates to a composite of copper and copper low-valent oxides and a preparation method thereof, specifically a cubic Cu with porous Cu as the core 2 O is Cu / Cu composed of shell 2 O core-shell composite microspheres and preparation method thereof. Background technique [0002] Core-shell composite microspheres refer to a composite multiphase structure formed by using a spherical particle with a size ranging from micrometers to nanometers as the core and coating several uniform thin films on its surface. Connected by physical or chemical action. The broad core / shell materials include not only composite materials with core-shell structure composed of the same or different substances, but also composite materials with special morphologies such as hollow spheres and microcapsules. . Core-shell composite materials are generally divided into inorganic-organic, inorganic-inorganic, organic-organic and organic-inorgan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/24
Inventor 刘超马东霞纪秀杰王滨吴洁贾建龙
Owner HEBEI UNIV OF TECH
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