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Controllable preparation method for three-dimensional nano self-assembly of copper oxide

A nano-self-assembly and three-dimensional nano-technology, applied in the direction of copper oxide/copper hydroxide, nanotechnology, etc., can solve problems such as unsuitable for large-scale application, complex synthesis process, expensive reaction equipment, etc., and is conducive to large-scale application , low preparation cost, significant production practical effect

Inactive Publication Date: 2014-05-07
CHINA JILIANG UNIV
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Problems solved by technology

The above common methods for synthesizing copper oxide are not suitable for large-scale applications due to the disadvantages of high temperature, long reaction time, expensive reaction equipment or complex synthesis process.

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  • Controllable preparation method for three-dimensional nano self-assembly of copper oxide
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  • Controllable preparation method for three-dimensional nano self-assembly of copper oxide

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preparation example Construction

[0027] see figure 1 , shows a flow chart of the steps of the method for the controllable preparation of copper oxide three-dimensional nano self-assembled body according to the embodiment of the present invention, which includes the following steps:

[0028] S101, preparing an aqueous solution of sodium hydroxide: using deionized water as a solvent to prepare an aqueous solution of sodium hydroxide so that the concentration of sodium hydroxide is 2.0-10.0 mol / L;

[0029] S102, using anhydrous copper chloride as copper source and deionized water as solvent, prepared Cu 2+ Copper chloride aqueous solution with a concentration of 0.01-0.15mol / L;

[0030] S103, adding the prepared aqueous copper chloride solution dropwise into the prepared aqueous sodium hydroxide solution, and fully stirring, wherein the volume ratio of the aqueous copper chloride solution to the aqueous sodium hydroxide solution is 1:1;

[0031] S104, transferring the obtained mixed solution into a reaction ke...

Embodiment 1

[0038] A method for the controllable preparation of copper oxide three-dimensional nanometer self-assembly, comprising the following steps:

[0039] Step 1: prepare 11.25 mL of sodium hydroxide aqueous solution: use deionized water as solvent to prepare sodium hydroxide aqueous solution, so that the concentration of sodium hydroxide is 8.0mol / L;

[0040] Step 2: Take anhydrous copper chloride as the copper source and deionized water as the solvent to prepare Cu 2+ 11.25 mL of a solution with a concentration of 0.01 mol / L;

[0041] Step 3: adding the copper chloride aqueous solution dropwise into the sodium hydroxide aqueous solution, and fully stirring;

[0042] Step 4: Transfer the solution obtained in step 3 to a 30mL reactor so that the total volume of the reaction solution accounts for 75% of the volume of the reactor, seal it, and place it in an oven at 120°C for 6 hours;

[0043] Step 5: After the reaction, the product was collected by centrifugation, washed with deion...

Embodiment 2

[0045] A method for the controllable preparation of copper oxide three-dimensional nanometer self-assembly, comprising the following steps:

[0046] Step 1: prepare 106.25 mL of sodium hydroxide aqueous solution: use deionized water as solvent to prepare sodium hydroxide aqueous solution, so that the concentration of sodium hydroxide is 4.0mol / L;

[0047] Step 2: Take anhydrous copper chloride as the copper source and deionized water as the solvent to prepare Cu 2+ 106.25 mL of a solution with a concentration of 0.10 mol / L;

[0048] Step 3: adding the copper chloride aqueous solution dropwise into the sodium hydroxide aqueous solution, and fully stirring;

[0049] Step 4: Transfer the solution obtained in step 3 to a 250mL reactor so that the total volume of the reaction solution accounts for 85% of the volume of the reactor, seal it, and place it in an oven at 150°C for 8 hours;

[0050] Step 5: After the reaction, the product was collected by centrifugation, washed with de...

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Abstract

The embodiment of the invention discloses a controllable preparation method for a three-dimensional nano self-assembly of copper oxide. The controllable preparation method comprises the following steps: preparing a 2.0-10.0mol / L sodium hydroxide water solution by taking deionized water as a solvent; preparing a copper chloride water solution with the Cu<2+> concentration of 0.01-0.15mol / L by taking anhydrous copper chloride as a copper source and the deionized water as a solvent; dropwise adding the equivalent copper chloride water solution into the sodium hydroxide water solution, and sufficiently stirring; transferring the mixed solution into a reaction kettle, sealing and reacting in a drying oven with the temperature of 100-150 DEG C for 4-8h; and after the reaction is ended, centrifugally collecting the product, respectively cleaning the product many times by using the deionized water and absolute ethyl alcohol, and then, drying at the temperature of 50-70 DEG C for 3-5h to obtain the three-dimensional nano self-assembly of the copper oxide. The spherical, chrysanthemum-like and fan-like three-dimensional self-assembly with a secondary nanosheet structure is prepared from reaction raw materials with low prices at lower temperature by using a hydrothermal synthesis method.

Description

technical field [0001] The invention relates to semiconductor material copper oxide, in particular to a controllable preparation method of copper oxide three-dimensional nano self-assembly. Background technique [0002] Nano-copper oxide (CuO), as a type of P-type transition metal oxide, has attracted much attention due to its good application prospects in the fields of catalysts, gas sensors, solar cells, electrode materials, superhydrophilic materials, and high critical temperature superconductors. . The unique properties of nano-copper oxide are closely related to its size and shape. Therefore, the preparation of copper oxide nanomaterials with controllable size and shape is the basis for broadening its application fields. At present, there have been reports in the literature on the synthesis of copper oxide nanomaterials with various shapes, such as nanoparticles, nanorods, nanowires, nanosheets, nanotubes, three-dimensional hierarchical microstructures (including sea u...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00
Inventor 孙丽侠卫国英葛洪良江莉余云丹
Owner CHINA JILIANG UNIV
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