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Micro-nano copper oxide and preparation method thereof

A copper oxide, micro-nano technology, applied in the direction of copper oxide/copper hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of low sensitivity, difficulty in the synthesis of copper oxide gas-sensitive materials, and low specific surface area of ​​materials, so as to increase sensitivity and response speed, beneficial to electron transfer, and high specific surface area

Inactive Publication Date: 2015-09-30
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the synthesis of copper oxide gas-sensing materials with a three-dimensional hierarchical structure is difficult, and the specific surface area of ​​the material is low, and the sensitivity is low when used as a gas-sensing material. Copper has become one of the research hotspots in the field of nanomaterials

Method used

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  • Micro-nano copper oxide and preparation method thereof
  • Micro-nano copper oxide and preparation method thereof
  • Micro-nano copper oxide and preparation method thereof

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preparation example Construction

[0026] The second aspect of the present invention provides a method for preparing micro-nano copper oxide, the steps comprising:

[0027] (1) dissolving the soluble copper salt in an organic solvent, sealing and stirring until the soluble copper salt is completely dissolved;

[0028] (2) dodecyltrimethylammonium bromide is dissolved in the solution obtained in step (1), so that the mass volume ratio of dodecyltrimethylammonium bromide and organic solvent is 0.002-0.04g / mL, Seal and stir for 1-4 hours;

[0029] (3) heat the solution obtained in step (2) at 120-200° C. for 2-12 hours, and cool;

[0030] (4) The reaction product is filtered, centrifuged, cleaned and dried;

[0031] (5) Calcining the dried product of step (4) at a high temperature of 400-600° C. for 1-5 hours to obtain micronano copper oxide.

[0032] Preferably, the soluble copper salt is copper nitrate, and the organic solvent is absolute ethanol.

[0033] More preferably, the copper nitrate in step (1) is d...

Embodiment 1

[0037] Prepare micro-nano copper oxide, the specific steps are as follows:

[0038] 1) Dissolve 20 grams of copper nitrate in 50-100 ml of absolute ethanol, seal and stir continuously for 3 hours until the copper nitrate is completely dissolved;

[0039] 2) Dissolve 0.5 gram of dodecyltrimethylammonium bromide in the solution of step (1), seal and stir continuously for 2 hours;

[0040] 3) Transfer the solution obtained in step (2) to an autoclave, heat it at 180°C for 2 hours, and cool it down to room temperature naturally;

[0041] 4) The reaction product was filtered, centrifuged, washed three times with absolute ethanol, and dried at 70°C for 12 hours;

[0042] 5) Calcining the powder obtained in step (4) at a high temperature of 500° C. for 1.5 h to obtain micro-nano copper oxide with a three-dimensional hierarchical rose shape.

[0043] The micro-nano copper oxide prepared by the above method has good dispersion and regular shape, and it is subjected to XRD test to det...

Embodiment 2

[0046] Prepare micro-nano copper oxide, the specific steps are as follows:

[0047] (1) Dissolve 10 grams of copper nitrate in 50-100 milliliters of absolute ethanol, seal and stir continuously for 3 hours until the copper nitrate is completely dissolved;

[0048] (2) 0.5 gram of dodecyltrimethylammonium bromide is dissolved in the solution of step (1), sealed and continuously stirred for 2 hours;

[0049] (3) Transfer the solution obtained in step (2) to an autoclave, heat it at 180° C. for 2 hours, and cool to room temperature naturally;

[0050] (4) The reaction product was filtered, centrifuged, washed with absolute ethanol three times, and dried at 70° C. for 12 hours;

[0051] (5) Calcining the powder obtained in step (4) at a high temperature of 500° C. for 1.5 h to obtain micronano copper oxide.

[0052] The micro-nano copper oxide prepared by the above method has good dispersion and regular shape, and it is subjected to XRD test to determine the crystal form of the ...

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Abstract

The invention provides micro-nano copper oxide which is microparticles formed in such a way that copper oxide layered structures are staggered and arrayed mutually; each copper oxide layered structure is formed through loose arrangement of copper oxide particles; gaps communicated with one another are formed between the copper oxide particles in the same copper oxide layered structure. A preparation method of micro-nano copper oxide comprises the following steps: (1) dissolving soluble copper salt in an organic solvent, sealing and stirring until the soluble copper salt is completely dissolved; (2) dissolving dodecyltrimethylammonium bromide in an obtained solution, sealing and stirring; (3) conducting heat preservation on the obtained solution for 2-12 h at the temperature of 120-200 DEG C, and cooling; (4) filtering a reaction product, centrifugalizing the filtered reaction product, cleaning the centrifugated product, and drying a cleaned product; (5) conducting 400-600-DEG C high-temperature calcinations on a dried product for 1-5 h. Copper oxide is controllable in shape, regular, and high in dispersibility, has a three-dimensional hierarchical structure and more active sites, and is large in specific surface area, and high in gas sensitivity, and the synthetic method is simple and high in repeatability.

Description

technical field [0001] The invention relates to the technical field of semiconductor materials, in particular to a micronano copper oxide and a preparation method thereof. Background technique [0002] With the development of human society, energy and environmental issues have become increasingly prominent and have attracted widespread attention. Modern environmental protection technology has also developed rapidly. Gas-sensing and catalytic materials with excellent performance have important applications in the fields of air quality detection, safety production, and pollutant degradation. [0003] As an important transition metal oxide, copper oxide is a typical p-type semiconductor material with a band gap of 1.2eV. Due to its low price and toxicity, high stability and rich element distribution, it has been widely used in gas sensors, lithium-ion batteries, antibacterial and antivirus, magnetic storage devices and other fields. A large number of studies have shown that t...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00
Inventor 熊娟刘雷顾豪爽覃愿张为海
Owner HUBEI UNIV
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