Method for preparing copper hydroxide and copper oxide nano material and application

Abstract

The invention discloses a method for preparing a copper hydroxide and copper oxide nano material, which comprises the following steps: dispersing atacamite serving as a precursor into distilled water to form suspension, then dripping NaOH solution into the suspension with stirring to make the molar ratio of the NaOH to the precursor be 6: 1-100: 1, continuously stirring the solution to fully react the precursor to generate Cu(OH)2 sediment and Cu(OH)4<2-> solution mixture after the dripping of the NaOH solution is finished, treating the mixture by ultrasound to generate Cu(OH)2 and / or CuO nano material, and performing thermal inversion reaction on the generated Cu(OH)2 nano material to form CuO nano material. The method realizes the control of product phase and appearance by effectively controlling the ultrasound time and / or the temperature rise of the thermal inversion reaction, and has the advantages of mild reaction condition, quickness, simple operation, low cost, strong controllability of product structure, good reproducibility and easy implementation of large-scale production.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a preparation method and application of copper hydroxide and copper oxide nanomaterials. Background technique [0002] At present, copper oxide CuO, as a narrow bandgap semiconductor, has attracted much attention due to its good application prospects in the fields of gas sensors, solar energy conversion, and catalyst use. [0003] At present, hydrothermal method and other wet chemical methods are commonly used methods to prepare copper oxide CuO nanomaterials. In order to control the phase and morphology of the prepared copper oxide CuO nanomaterials, these methods usually require the use of toxic chemicals that are harmful to the environment. Or refractory organic solvents are used to control the phase and morphology of copper oxide CuO nanomaterials, which seriously pollute the environment and affect people's health. [0004] In recent years, with different co...

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Problems solved by technology

[0003] At present, hydrothermal method and other wet chemical methods are commonly used methods to prepare copper oxide CuO nanomaterials. In order to control the phase and morphology of the prepared copper oxide CuO nanomaterials, these methods usually require the use of toxic chemicals that are harmful to the environment. or refractory organic solvents to control the phase and morphology of copper oxide CuO nanomaterials, thus seriously polluting the environment and affecting people's health

[0004] In recent years, with different copper salts, such as: basic copper nitrate Cu 2 (OH) 3 NO 3 , basic copper chloride Cu 2 Cl(OH) 3 , basic copper carbonate Cu 2 (OH) 2 CO 3 and basic copper sulfate Cu 4 SO 4 (OH) 6 The method of synthesizing copper oxide CuO nanomaterials as a precursor is a research hotspot, but this method usually requires the use of more expensive ionic liquids or other templating agents to control the morphology of CuO nanomaterials, which is costly and requires After a long time (up to 1-2 days) of heating process, CuO nanomaterials can be prepared, and the efficiency needs to be improved

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