Method for preparing CuO nano-film

A nano-film, aqueous solution technology, applied in copper oxide/copper hydroxide and other directions, can solve problems such as inability to achieve, and achieve the effects of environmental protection cost, simple process, and excellent physical and chemical properties

Inactive Publication Date: 2012-07-25
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

In addition, narrow bandgap CuO can be used as photodetectors and optical switching devices in the visible range, while other wide bandgap metal oxide semiconductor materials cannot be realized.

Method used

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  • Method for preparing CuO nano-film
  • Method for preparing CuO nano-film
  • Method for preparing CuO nano-film

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Embodiment

[0021] A method for preparing CuO nano film, the steps are as follows:

[0022] 1) Prepare 0.1M Cu(NO 3 ) 2 and 0.05M NaOH aqueous solution, drop the prepared NaOH aqueous solution into Cu(NO 3 ) 2 In solution, NaOH aqueous solution and Cu(NO 3 ) 2 The volume ratio of the aqueous solution is 1:1, the water bath is magnetically stirred, the reaction temperature is 90°C, and the reaction time is 1 hour, and a blue flocculent precipitate is obtained;

[0023] 2) Wash the above precipitate with deionized water, centrifuge, dry and grind to obtain a blue powder;

[0024] 3) Put the above-mentioned blue powder into the crucible, and bake it in a muffle furnace at 400°C for 1 hour to obtain black CuO powder;

[0025] 4) The above-mentioned black CuO powder was dissolved in n-hexane at a dosage ratio of 2 mg / ml, and after ultrasonic and centrifugal separation, a uniformly dispersed CuO solution was obtained;

[0026] 5) Spin-coat the above-mentioned CuO solution on the surface ...

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Abstract

A method for preparing a CuO nano-film includes steps: dripping NaOH aqueous liquor into Cu(NO3)2 liquor and obtaining blue flocculent precipitates after heating and reaction; placing washed, dried and ground blue powder into a crucible and roasting the crucible in a muffle furnace to obtain black CuO powder; dissolving the CuO powder in solvent and obtaining CuO liquor after centrifugal separation; and spin-coating the CuO liquor on the surface of a substrate by a spin-coating method and obtaining the CuO nano-film after drying and annealing. The method has the advantages that the method for preparing the CuO nano-film is simple in process and low in cost, and is environment-friendly, and the CuO nano-film can be obtained without the aid of special equipment, realizes a surface effect, a quantum size effect, a volume effect and macroscopic quantum tunneling effect, displays excellent physical and chemical properties in terms of magnetism, heat resistance, light absorption, chemical activity, catalyst, melting point and the like as compared with common CuO, and becomes one of organic materials with wide application.

Description

technical field [0001] The invention relates to nano material preparation technology, in particular to a preparation method of CuO nano film. technical background [0002] Due to the existence of negatively charged Cu vacancy defects and oxygen gaps in CuO, it is a p-type semiconductor material that can be applied in various fields, so it is one of the most studied materials in the literature. Its band gap is 1.5 eV, which is close to that of an ideal solar cell and can match the solar spectrum well. Because of its high light absorption and low thermal emittance, it can be used as a light-absorbing material in solar cells. CuO is not only a potential field emission material, but also an important catalyst, as well as a good gas sensor. It is well known that CuO has large magnetoresistance and high-temperature superconducting properties. Because CuO has photoconductive and photochemical properties, it is also a potential material for preparing optical switches and solar ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02C03C17/23C04B41/50
Inventor 李岚任志瑞王丽师李萍李开祥李梦真李波陈义鹏葛林姜立芳
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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