CN101792172A - Method for preparing copper hydroxide and copper oxide nano material and application - Google Patents
Method for preparing copper hydroxide and copper oxide nano material and application Download PDFInfo
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- CN101792172A CN101792172A CN 201010116375 CN201010116375A CN101792172A CN 101792172 A CN101792172 A CN 101792172A CN 201010116375 CN201010116375 CN 201010116375 CN 201010116375 A CN201010116375 A CN 201010116375A CN 101792172 A CN101792172 A CN 101792172A
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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
The present invention relates to the nano material preparation technical field, particularly relate to the preparation method and the application of a kind of copper hydroxide and copper oxide nano material.
Background technology
At present, cupric oxide CuO enjoys people to pay close attention to as low-gap semiconductor owing to having a good application prospect in fields such as gas sensor, conversion of solar energy, catalyzer uses.
Current, hydrothermal method and other wet chemistry method are the common methods of preparation cupric oxide CuO nano material, in order to control the thing phase and the pattern of prepared cupric oxide CuO nano material, these methods need use the organic solvent of environmentally harmful deleterious chemical or difficult degradation to realize to cupric oxide CuO nano material thing mutually and the control of pattern usually, therefore severe contamination environment, influenced the healthy of people.
In recent years, with different mantoquitas, for example: basic copper nitrate Cu
2(OH)
3NO
3, basic copper chloride Cu
2Cl (OH)
3, ventilation breather Cu
2(OH)
2CO
3With Basic Chrome Sulphate Cu
4SO
4(OH)
6The method of synthesizing cupric oxide CuO nano material as presoma is a research focus, but, the pattern that this method need use the expensive ionic liquid of price or other template to control the CuO nano material usually, cost is higher, and need just can prepare the CuO nano material through the heat-processed of long-time (nearly 1-2 days), efficient has much room for improvement.
Therefore, press for the preparation method who develops a kind of copper oxide nano material at present, it can prepare copper oxide nano material fast, and preparation cost is low, and is environmentally friendly.
Summary of the invention
In view of this, the invention provides the preparation method and the application of a kind of copper hydroxide and copper oxide nano material, it is not using under the template condition, adopt ultrasonic auxiliary law can prepare copper hydroxide nano material and copper oxide nano material fast with secondary structure, by the experiment parameter alternative preparation copper hydroxide of regulation and control reaction or the one dimension/two-dimensional nano material of cupric oxide, has the reaction conditions gentleness, fast, simple to operate, preparation cost is low, the product structure controllability is strong, favorable reproducibility and the easy advantage that realizes scale operation, help large-scale promotion application, be of great practical significance.
For this reason, the invention provides the preparation method of a kind of copper hydroxide and copper oxide nano material, may further comprise the steps:
The first step, with atacamite Cu
7Cl
4(OH)
10H
2O is scattered in this precursor in the distilled water as precursor, forms suspension liquid, under agitation the NaOH drips of solution is added in the above-mentioned suspension liquid then, makes NaOH and precursor atacamite Cu
7Cl
4(OH)
10H
2The mol ratio of O is 6: 1～100: 1, dropwises the back at NaOH solution and continues to stir, and allows the precursor complete reaction generate copper hydroxide Cu (OH)
2Precipitation and tetrahydroxy close copper Cu (OH)
4 2-The mixture of complex anion solution;
Second step, with the copper hydroxide Cu (OH) of above-mentioned generation
2Precipitation and Cu (OH)
4 2-The mixture of solution is put into ultrasonic cleaning machine and is carried out ultrasonicly, generates copper hydroxide Cu (OH)
2And/or the nano material of cupric oxide CuO.
Preferably, the precursor atacamite Cu in the described the first step
7Cl
4(OH)
10H
2O prepares by following steps:
Under violent stirring, the sodium hydroxide NaOH aqueous solution slowly is added drop-wise to temperature and is 50～70 ℃ cupric chloride CuCl
2In the aqueous solution, make hydroxide ion OH
-With cupric ion Cu
2+Between mol ratio be 0.5: 1, and then the gained suspension liquid separated with whizzer, obtain the green precipitate thing, then wash this green precipitate thing respectively 3～5 times with deionized water and dehydrated alcohol successively, realize removing the soluble ion in the green precipitate thing, dry under 70 ℃ temperature then, finally obtain atacamite Cu
7Cl
4(OH)
10H
2O.
Preferably, the volume ratio of described deionized water and dehydrated alcohol and described green precipitate thing all is 0.5: 1～2: 1.
Preferably, described copper hydroxide Cu (OH)
2Nano material comprises copper hydroxide Cu (OH)
2Nano wire, by Cu (OH)
2In the mixture that nano particle and nanometer rod are formed one or both, described cupric oxide CuO nano material includes: have in the mixture of the CuO nano wire of secondary structure, the CuO nanometer sheet with secondary structure, CuO nano particle and nanometer rod one or several.
Preferably, described copper hydroxide Cu (OH)
2The diameter of nano wire is 20～30 nanometers, and length is 1～5 micron, smooth surface; Described CuO nanowire surface is coarse, and its diameter is 20～30 nanometers, and length is 1～5 micron, and every CuO nano wire is by countless overlapped being formed by connecting of subsphaeroidal nano particle, and this nano particle diameter is 14～20 nanometers; The thickness of described CuO nanometer sheet is 20～30 nanometers, and diameter is 200～800 nanometers, has the nano wire secondary structure.
Preferably, during ultrasonic time≤20 minute in second step, the product of generation is copper hydroxide Cu (OH)
2Nano wire perhaps is Cu (OH)
2At this moment the mixture of nano particle and nanometer rod also further includes step:
Copper hydroxide Cu (OH) with above-mentioned generation
2Nano material is put into retort furnace, and calcination is 1～6 hour under 150～300 ℃ temperature, and heat-up rate is 1 ℃/min, prepares the CuO nano wire with secondary structure, perhaps the mixture of CuO nano particle and nanometer rod.
Preferably, the ultrasonic time in second step is between 20～30 minutes the time, the product of ultrasonic acquisition be copper hydroxide Cu (OH)
2Nano wire and mixture with CuO nanometer sheet of secondary structure.
Preferably, during ultrasonic time 〉=30 minute in second step, the direct ultrasonic CuO nanometer sheet for preparing with secondary structure.
The application of the copper oxide nano material of above method preparation can be used as photoelectricity gas sensing material, photocatalyst and conversion of solar energy material.
By above scheme as seen, compared with prior art, the invention provides the preparation method and the application of a kind of copper hydroxide and copper oxide nano material, it is not using under the template condition, adopt ultrasonic auxiliary law can prepare copper hydroxide nano material and copper oxide nano material fast with secondary structure, by the experiment parameter alternative preparation copper hydroxide of regulation and control reaction or the one dimension/two-dimensional nano material of cupric oxide, has the reaction conditions gentleness, fast, simple to operate, preparation cost is low, the product structure controllability is strong, favorable reproducibility and the easy advantage that realizes scale operation, help large-scale promotion application, be of great practical significance.
Description of drawings
Fig. 1 is atacamite Cu
7Cl
4(OH)
10H
2O presoma, Cu (OH)
2The X-ray diffraction XRD figure of nano wire, CuO nano wire, among Fig. 1, a is atacamite Cu
7Cl
4(OH)
10H
2O, b are Cu (OH)
2Nano wire, c are the CuO nano wire;
Fig. 2 a, Fig. 2 b are respectively Cu (OH)
2The scanning electronic microscope SEM figure of nano wire, CuO nano wire;
Fig. 3 a, Fig. 3 b are respectively transmission electron microscope TEM figure, high resolution transmission electron microscopy HRTEM and the electron-diffraction diagrams of CuO nano wire;
Fig. 4 a, Fig. 4 b, Fig. 4 c are respectively SEM, TEM, HRTEM and the electron-diffraction diagrams of CuO nanometer sheet;
Fig. 5 is the SEM figure of CuO nano particle and nanometer rod mixture;
Fig. 6 is the surface photovoltage spectrogram of CuO nano wire in different atmosphere, and among Fig. 6, a is an air atmosphere, and b is a methylene dichloride atmosphere, and c is an ammonia atmosphere.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
The invention provides the preparation method of a kind of copper hydroxide and copper oxide nano material, it is with atacamite Cu
7Cl
4(OH)
10H
2O is a presoma, under no template condition, adopts ultrasonic auxiliary law can prepare copper hydroxide Cu (OH) fast
2Nano materials such as nano wire, the CuO nano wire with secondary structure and CuO nanometer sheet specifically may further comprise the steps:
The first step, preparation are as the atacamite Cu of precursor
7Cl
4(OH)
10H
2O;
This step is specially: the sodium hydroxide NaOH aqueous solution slowly is added drop-wise to temperature under violent stirring and is 50～70 ℃ cupric chloride CuCl
2In the aqueous solution, make hydroxide ion OH
-With cupric ion Cu
2+Between mol ratio be 0.5: 1, and then the gained suspension liquid separated with whizzer, obtain the green precipitate thing, then wash this green precipitate thing respectively 3～5 times with deionized water and dehydrated alcohol successively, realize removing the soluble ion in the green precipitate thing, dried overnight under 70 ℃ temperature finally obtains atacamite Cu then
7Cl
4(OH)
10H
2O.
In the present invention, on the specific implementation, the volume ratio of described deionized water and dehydrated alcohol and above-mentioned green precipitate thing can be 0.5: 1～2: 1, and certainly, this volume ratio also could greater than 2: 1;
Second step, preparation copper hydroxide Cu (OH)
2Precipitation is specially: with precursor atacamite Cu
7Cl
4(OH)
10H
2O is scattered in the distilled water, forms suspension liquid, under agitation the NaOH drips of solution is added in the above-mentioned suspension liquid then, makes NaOH and precursor atacamite Cu
7Cl
4(OH)
10H
2The mol ratio of O is 6: 1～100: 1, dropwises the back at NaOH solution and continues to stir 30 minutes, thereby allow the precursor complete reaction generate copper hydroxide Cu (OH)
2Precipitation and tetrahydroxy close copper Cu (OH)
4 2-The mixture of complex anion solution;
Need to prove excess NaOH solution and Cu
7Cl
4(OH)
10H
2The reaction of O precursor can generate copper hydroxide Cu (OH)
2Precipitation is closed copper acid sodium Na with tetrahydroxy
2[Cu (OH)
4] mixture of title complex.
The 3rd step, the ultrasonic auxiliary copper hydroxide Cu (OH) of preparation fast
2With cupric oxide CuO nano material, be specially: with the copper hydroxide Cu (OH) of above-mentioned generation
2Precipitation and Cu (OH)
4 2-The mixture of solution is put into ultrasonic cleaning machine and is carried out ultrasonicly, generates copper hydroxide Cu (OH)
2And/or the nano material of cupric oxide CuO.
In above-mentioned the 3rd step, described copper hydroxide Cu (OH)
2Nano material comprises copper hydroxide Cu (OH)
2Nano wire, by Cu (OH)
2A kind of in the mixture that nano particle and nanometer rod are formed or two kinds; Described cupric oxide CuO nano material includes: have in the mixture of the CuO nano wire of secondary structure, the CuO nanometer sheet with secondary structure, CuO nano particle and nanometer rod one or several;
Need to prove, during ultrasonic time in ultrasonic cleaning machine≤20 minute, generate copper hydroxide Cu (OH)
2Nano wire, perhaps Cu (OH)
2The mixture of nano particle and nanometer rod, and during in ultrasonic time 〉=30 minute, the direct ultrasonic CuO nanometer sheet for preparing with secondary structure, ultrasonic time is between 20～30 minutes the time, the product of ultrasonic acquisition be copper hydroxide Cu (OH)
2Nano wire and mixture with CuO nanometer sheet of secondary structure;
In the present invention, generate copper hydroxide Cu (OH) in the 3rd step
2During nano material, can also be with copper hydroxide Cu (OH)
2Nano material is further passed through the solid state heat conversion reaction, preparation CuO nano material, and concrete thermal conversion reaction step is as follows:
The 4th step, with the copper hydroxide Cu (OH) of above-mentioned generation
2Nano material is put into retort furnace, and calcination is 1～6 hour under 150～300 ℃ temperature, and heat-up rate is 1 ℃/min, prepares the CuO nano wire with secondary structure, perhaps the mixture of CuO nano particle and nanometer rod.
Need to prove, in the present invention, at above-mentioned Cu (OH)
2In the preparation of CuO nano material, ultrasonic time is for the Cu (OH) of prepared acquisition
2Reaching pattern mutually with the thing of CuO nano material plays an important role.The product that does not carry out supersound process and directly carry out the thermal conversion reaction gained is CuO nano particle and nanometer rod mixture; The product of gained is Cu (OH) during in ultrasonic=20 minute
2Nano wire generates the CuO nano wire with secondary structure then behind thermal conversion reaction, the thermal conversion reaction temperature is 150～300 ℃, and along with the raising of temperature, degree of crystallinity increases, but part nano wire phenomenon of rupture can take place.At ultrasonic 30 minutes and when above, in ultrasonic cleaning machine, can directly obtain having the CuO nanometer sheet of secondary structure.
In the present invention, according to the difference of ultrasonic time, the described copper hydroxide Cu (OH) that can prepare
2The diameter of nano wire is 20～30 nanometers, and length is 1～5 micron, smooth surface; And the described cupric oxide CuO nano material that can prepare includes: have the CuO nano wire of secondary structure, the mixture with CuO nanometer sheet, nano particle and nanometer rod of secondary structure, wherein: the CuO nanowire surface is coarse, its diameter is 20～30 nanometers, length is 1～5 micron, every CuO nano wire is by countless overlapped being formed by connecting of subsphaeroidal nano particle, and this nano particle diameter is 14～20 nanometers; The thickness of CuO nanometer sheet is 20～30 nanometers, and diameter is 200～800 nanometers, has the nano wire secondary structure.
In the present invention, because the CuO nano material of preparation has stronger photoabsorption in the ultraviolet-visible light district and it produces photohole and light induced electron respectively in valence band and conduction band under illumination condition, therefore it can be used as potential conversion of solar energy material and photocatalyst material, to the CuO nano wire at air.Ammonia and CH
2Cl
2Surface photovoltaic spectroscopy in the atmosphere studies show that it is good photoelectricity gas sensing material.Therefore, the copper oxide nano material that above method prepares can be used as photoelectricity gas sensing material, photocatalyst and conversion of solar energy material.
Need to prove that ultrasonic method can cause reaction system localized hyperthermia, high pressure and rate of cooling, because of it fast, is efficiently progressively developed into the effective ways of nano materials.Therefore the present invention is with atacamite Cu
7Cl
4(OH)
10H
2O is a presoma, under the condition of not using the masterplate agent, adopts ultrasonic auxiliary law and in conjunction with the solid state heat conversion process, has synthesized the controlled Cu (OH) of pattern
2Materials such as nano wire, CuO nano wire, nanometer sheet.Ultransonic use has not only been shortened heat-up time greatly, has saved the energy; And ultrasonic sheet precursor ultrasonic peeled off effect and be key to the product morphology control to effective control of ultrasonic time, thereby avoided using as template to disagreeableness organic solvent of environment or expensive ionic liquid.The ultrasonic time weak point can not make the sheet precursor peel off fully and form Cu (OH)
2Nano wire, and ultrasonic time length can make the Cu (OH) of formation
2Nano wire adheres to each other in harness mode and dehydration forms the CuO nanometer sheet.Heat-up rate in the thermal conversion processes is the key that the controlled substance pattern does not change.Therefore the present invention is by (1 ℃/min) realize control to product thing phase and pattern of the effective heat-up rate of control ultrasonic time and/or thermal conversion reaction, the preparation method of copper hydroxide provided by the invention and copper oxide nano material is simple to operate, low price, the efficient height, environmentally friendly.
The present invention is presoma with the atacamite, does not use under the template condition, adopts ultrasonic auxiliary law to prepare Cu (OH) fast
2Materials such as nano wire, CuO nano wire, nanometer sheet with secondary structure.This method has that reaction conditions gentleness, quick, simple to operate, low price, product structure controllability are strong, favorable reproducibility and easily realize the advantage of scale operation.
Provide the preparation method's of a kind of copper hydroxide provided by the invention and copper oxide nano material specific embodiment below:
The NaOH aqueous solution that with 50mL concentration is 0.70mol/L under violent stirring slowly is added drop-wise to the CuCl that 20mL concentration is 3.5mol/L heat
2In the aqueous solution, make OH
-And Cu
2+Between mol ratio be 0.5: 1, after dropwising, with suspension liquid with whizzer separate the light green throw out, wash this green precipitate thing respectively 3～5 times with deionized water and dehydrated alcohol successively then, to remove soluble ion in the throw out (on the specific implementation, volume ratio between deionized water and dehydrated alcohol and the green precipitate thing all can be 0.5: 1～2: 1), dried overnight under 70 ℃ temperature obtains Cu then
7Cl
4(OH)
10H
2The O solid;
With gained Cu
7Cl
4(OH)
10H
2The O solid grinds with mortar, takes by weighing four parts of 0.3g Cu
7Cl
4(OH)
10H
2The O presoma, respectively it is scattered in a small amount of distilled water (about 4mL), the NaOH drips of solution that under agitation with 20mL concentration is 2mol/L is added in the above-mentioned suspension liquid, dropwising the back continues to stir 30 minutes, put it into then in the ultrasonic cleaning machine and distinguish ultrasonic 0 minute, 20 minutes, 30 minutes and 40 minutes, respectively with gained sedimentation and filtration, washing, drying, obtain Cu (OH) again
2Or CuO solid.
With ultrasonic time≤20 minute resulting Cu (OH)
2Behind the solid drying, put into crucible respectively, and place retort furnace (heat-up rate be 1 ℃/1min) 300 ℃ of following calcinations 3 hours, obtain the CuO product.Repeat ultrasonic 20 minutes experiment, with gained Cu (OH)
2Solid is respectively at 150 ℃ and 200 ℃ of following calcinations 3 hours, or in 300 ℃ of following calcinations 1 hour and 6 hours, can obtain the CuO nano wire.
Fig. 1 is atacamite presoma, Cu (OH)
2With the XRD figure of CuO nano wire, Fig. 2, Fig. 3 are Cu (OH)
2Reach with the SEM of CuO nano wire (or) the TEM photo.As seen, the Cu (OH) of this method preparation
2Nano wire is an iris, and the CuO nano wire is a monoclinic structure, and the diameter of nano wire is 20～30 nanometers, and length is 1～5 micron.The cupric oxide nano line is shaggy polycrystalline, has secondary structure, and every nano wire is by countless overlapped being formed by connecting of subsphaeroidal nano particle, and particle diameter is 14～20 nanometers.
Fig. 4 is SEM, TEM, HRTEM and the electron-diffraction diagram of CuO nanometer sheet, the CuO nanometer sheet of as seen ultrasonic auxiliary law preparation is the monocrystalline with nanometer wire secondary structure, the thickness of CuO nanometer sheet is 20～30 nanometers, diameter is 200～800 nanometers, and the CuO nanometer sheet is adhered to mutually in harness mode by countless nano wires and forms.Fig. 5 is the SEM figure without the CuO of ultrasonic procedure preparation, and as seen it is nano particle and nanometer rod mixture.Fig. 6 is the surface photovoltage spectrogram of CuO nano wire in different atmosphere, and as seen from Figure 6, this CuO nano wire is to ammonia and CH
2Cl
2The photoelectricity gas sensing material of air-sensitive sense.
In sum, the invention provides the preparation method and the application of a kind of copper hydroxide and copper oxide nano material, it is not using under the template condition, adopt ultrasonic auxiliary law can prepare copper hydroxide nano material and copper oxide nano material fast with secondary structure, by the experiment parameter alternative preparation copper hydroxide of regulation and control reaction or the one dimension/two-dimensional nano material of cupric oxide, has the reaction conditions gentleness, fast, simple to operate, preparation cost is low, the product structure controllability is strong, favorable reproducibility and the easy advantage that realizes scale operation, help large-scale promotion application, be of great practical significance.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the preparation method of copper hydroxide and copper oxide nano material is characterized in that, may further comprise the steps:
The first step, with atacamite Cu
7Cl
4(OH)
10H
2O is scattered in this precursor in the distilled water as precursor, forms suspension liquid, under agitation the NaOH drips of solution is added in the above-mentioned suspension liquid then, makes NaOH and precursor atacamite Cu
7Cl
4(OH)
10H
2The mol ratio of O is 6: 1～100: 1, dropwises the back at NaOH solution and continues to stir, and allows the precursor complete reaction generate copper hydroxide Cu (OH)
2Precipitation and tetrahydroxy close copper Cu (OH)
4 2-The mixture of complex anion solution;
Second step, with the copper hydroxide Cu (OH) of above-mentioned generation
2Precipitation and tetrahydroxy close copper Cu (OH)
4 2-The mixture of complex anion solution is put into ultrasonic cleaning machine and is carried out ultrasonicly, generates copper hydroxide Cu (OH)
2And/or the nano material of cupric oxide CuO.
2. preparation method as claimed in claim 1 is characterized in that, the precursor atacamite Cu in the described the first step
7Cl
4(OH)
10H
2O prepares by following steps:
Under violent stirring, the sodium hydroxide NaOH aqueous solution slowly is added drop-wise to temperature and is 50～70 ℃ cupric chloride CuCl
2In the aqueous solution, make hydroxide ion OH
-With cupric ion Cu
2+Between mol ratio be 0.5: 1, and then the gained suspension liquid separated with whizzer, obtain the green precipitate thing, then wash this green precipitate thing respectively 3～5 times with deionized water and dehydrated alcohol successively, realize removing the soluble ion in the green precipitate thing, dry under 70 ℃ temperature then, finally obtain atacamite Cu
7Cl
4(OH)
10H
2O.
3. preparation method as claimed in claim 2 is characterized in that, the volume ratio of described deionized water and dehydrated alcohol and described green precipitate thing all is 0.5: 1～2: 1.
4. preparation method as claimed in claim 1 is characterized in that, described copper hydroxide Cu (OH)
2Nano material comprises copper hydroxide Cu (OH)
2Nano wire, by Cu (OH)
2In the mixture that nano particle and nanometer rod are formed one or both, described cupric oxide CuO nano material includes: have in the mixture of the CuO nano wire of secondary structure, the CuO nanometer sheet with secondary structure, CuO nano particle and nanometer rod one or several.
5. preparation method as claimed in claim 4 is characterized in that, described copper hydroxide Cu (OH)
2The diameter of nano wire is 20～30 nanometers, and length is 1～5 micron, smooth surface; Described CuO nanowire surface is coarse, and its diameter is 20～30 nanometers, and length is 1～5 micron, and every CuO nano wire is by countless overlapped being formed by connecting of subsphaeroidal nano particle, and this nano particle diameter is 14～20 nanometers; The thickness of described CuO nanometer sheet is 20～30 nanometers, and diameter is 200～800 nanometers, has the nano wire secondary structure.
6. preparation method as claimed in claim 1 is characterized in that, during ultrasonic time≤20 minute in second step, the product of generation is copper hydroxide Cu (OH)
2Nano wire perhaps is Cu (OH)
2At this moment the mixture of nano particle and nanometer rod also further includes step:
Copper hydroxide Cu (OH) with above-mentioned generation
2Nano material is put into retort furnace, and calcination is 1～6 hour under 150～300 ℃ temperature, and heat-up rate is 1 ℃/min, prepares the CuO nano wire with secondary structure, perhaps the mixture of CuO nano particle and nanometer rod.
7. preparation method as claimed in claim 1 is characterized in that, the ultrasonic time in second step is between 20～30 minutes the time, the product of ultrasonic acquisition be copper hydroxide Cu (OH)
2Nano wire and mixture with CuO nanometer sheet of secondary structure.
8. preparation method as claimed in claim 1 is characterized in that, during ultrasonic time 〉=30 minute in second step, and the direct ultrasonic CuO nanometer sheet for preparing with secondary structure.
9. the application of the copper oxide nano material of method preparation according to claim 1 can be used as photoelectricity gas sensing material, photocatalyst and conversion of solar energy material.
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