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A kind of preparation method of hollow silkworm cocoon-like cuo nanometer material

A nanomaterial, silkworm cocoon technology, applied in nanostructure manufacturing, nanotechnology, nanotechnology and other directions, can solve the problem of long reaction time (several hours or tens of hours, large particle size of CuO hollow sphere structure, affecting product purity and yield, etc. It is easy to meet the requirements of raw materials, the production cycle is short, and it is easy to control.

Inactive Publication Date: 2011-12-07
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods involved above either require the use of surfactants, which not only increases the preparation cost, but also affects the purity and yield of the product; The reaction time is long (several hours or tens of hours), which is not conducive to industrial production; moreover, the prepared CuO hollow spheres have relatively large particle sizes, and the outer diameters all reach the micron level, even tens of microns, and the quality is not good. high

Method used

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  • A kind of preparation method of hollow silkworm cocoon-like cuo nanometer material
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  • A kind of preparation method of hollow silkworm cocoon-like cuo nanometer material

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Embodiment 1

[0026] The hollow cocoon-like CuO nanomaterial of the present invention is prepared by a one-step microwave heating method, that is, soluble copper salt, deionized water and urea are used as raw materials, and the precursor solution is obtained after stirring and dissolving, and the precursor solution is reacted by microwave heating generate. Its specific process steps are as follows:

[0027] (1) Take 0.1997g copper acetate and be mixed with 10mL deionized water to make solution A;

[0028] (2) Take by weighing 0.1203g urea and be mixed with solution B with 50mL deionized water, the mol ratio of copper salt and urea is 1: 2;

[0029] (3) While stirring, add solution A to solution B to form precursor solution C, the total volume of the solution is 60mL, and continue to stir for 10 minutes;

[0030] (4) Place the precursor solution C in a microwave generator for 30 minutes of microwave irradiation, the reaction temperature is 80°C, the microwave power is 300W, and the magneti...

Embodiment 2

[0036] The hollow cocoon-like CuO nanomaterial of the present invention is prepared by a one-step microwave heating method, that is, soluble copper salt, deionized water and urea are used as raw materials, and the precursor solution is obtained after stirring and dissolving, and the precursor solution is reacted by microwave heating generate. Its specific process steps are as follows:

[0037] (1) Take 0.1999g copper acetate and be mixed with solution A with 10mL deionized water;

[0038] (2) Take 0.0601g of urea and prepare solution B with 50mL of deionized water, the molar ratio of copper salt and urea is 1:1;

[0039] (3) While stirring, add solution A to solution B to form precursor solution C, the total volume of the solution is 60mL, and continue to stir for 10 minutes;

[0040] (4) Place the precursor solution C in a microwave generator for 30 minutes of microwave irradiation, the reaction temperature is 80°C, the microwave power is 300W, and the magnetic stirring rate ...

Embodiment 3

[0045] The hollow cocoon-like CuO nanomaterial of the present invention is prepared by a one-step microwave heating method, that is, soluble copper salt, deionized water and urea are used as raw materials, and the precursor solution is obtained after stirring and dissolving, and the precursor solution is reacted by microwave heating generate.

[0046] Its specific process steps are as follows:

[0047] (1) Take 0.1998g copper acetate and be mixed with 10mL deionized water to make solution A;

[0048] (2) Take by weighing 0.1802g urea and be mixed with solution B with 50mL deionized water, the mol ratio of copper salt and urea is 1: 3;

[0049] (3) While stirring, add solution A to solution B to form precursor solution C, the total volume of the solution is 60mL, and continue to stir for 10 minutes;

[0050] (4) Place the precursor solution C in a microwave generator for 30 minutes of microwave irradiation, the reaction temperature is 80°C, the microwave power is 300W, and th...

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Abstract

The invention discloses a preparation method for a hollow silk cocoon-like CuO nanomaterial, and provides a new method for the preparation technology of a hollow CuO nanomaterial. According to the present invention, the disadvantages in the prior art are overcome. The method is characterized in that: a normal-pressure and one-step microwave chemical synthesis method is adopted for preparing a hollow silk cocoon-like CuO nanomaterial, ie., aqueous solutions of soluble copper salt such as copper acetate and the like, and a queous solution of urea are adopted as precursor solutions, a one-step microwave irradiation process is adopted to prepare the hollow silk cocoon-like CuO nanomaterial. The hollow silk cocoon-like CuO nanomaterial provided by the present invention is ellipsoidal, and has characteristics of similar silk cocoon morphology, hollow structure, no agglomeration, monodisperse, and long diameter between 250-400 nm. With the present invention, the method has simple process; any surfactant and organic solvent is not used; the process is clean and environment-friendly; the method has characteristics of low reaction temperature, short reaction time, energy saving, low carbon,high performance, easy and available raw materials, low cost, and is applicable for the industrial production; the prepared material can be applicable for the fields of catalysis, antibacterial, solar battery, sensor material and the like.

Description

technical field [0001] The invention belongs to the technical field of semiconductor nanometer material preparation, and in particular relates to a preparation method of a hollow cocoon-like CuO nanometer material. Background technique [0002] Due to their unique functions and properties, nanomaterials play an important role in many fields such as nano optics, electricity, and magnetism. The properties of nanomaterials depend on their morphology and particle size, so controlled synthesis of nanomaterials with unique morphology has attracted more and more attention. Nanomaterials with hollow structures have always been one of the hotspots and difficulties in material research because of their large specific surface area, low density, excellent permeability, and unique photoelectric and surface properties. [0003] CuO is an excellent semiconductor material and has a wide range of applications in photothermal, photoelectric, sensor, superconducting, solar cells, lithium-ion ...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82B3/00
Inventor 邓崇海胡寒梅
Owner HEFEI UNIV
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