CN110237564B - Preparation method of self-heating nanowire array foam - Google Patents
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Abstract
The invention relates to a preparation method of self-heating nanowire array foam, which comprises the following steps: placing the pretreated foamy copper into a mixed solution of sodium hydroxide and ammonium persulfate to react to obtain Cu (OH) vertically growing on the surface of the foamy copper2A nanowire array foam; the obtained Cu (OH)2Calcining the nanowire array foam in a muffle furnace to obtain CuO nanowire array foam; respectively immersing the obtained CuO nanowire array foam into a polyvinylpyrrolidone solution and Cu (NO)3Soaking in the solution, taking out, cleaning, drying, and soaking in 0.01M Na2Reacting in the S solution to obtain CuO @ CuS nanowire array foam; and soaking the obtained CuO @ CuS nanowire array foam in a hydrophobic functional molecule solution for a preset time, and then taking out the soaked CuO @ CuS nanowire array foam to obtain the super-hydrophobic super-oleophylic CuO @ CuS nanowire array foam. The invention can realize the rapid enrichment and recovery of crude oil.
Description
Technical Field
The invention belongs to the technical field of environment-friendly photo-thermal materials, and particularly relates to a preparation method of self-heating nanowire array foam.
Background
In recent years, with offshore oil exploitation and oil leakage in the oil transportation process, serious damage to marine ecosystems and huge waste of precious resources are caused. The search and development of an efficient and environment-friendly crude oil recovery method become important topics for sustainable development of human beings. For the recovery of crude oil, the core technology is to research a material capable of rapidly adsorbing the crude oil. The crude oil adsorption material researched at present mainly has the defects of low adsorption efficiency, high cost and the like, and is difficult to popularize and use. It is known from previous studies that the viscosity of crude oil generally decreases with increasing temperature. Therefore, the invention discloses an adsorptive material capable of self-generating heat for rapid enrichment and recovery of crude oil, and the adsorptive material has wide market prospect.
Disclosure of Invention
The invention aims to provide a preparation method of self-heating nanowire array foam, which is used for rapid enrichment and recovery of crude oil.
The invention provides a preparation method of self-heating nanowire array foam, which comprises the following steps:
(1) placing the pretreated foamy copper into a mixed solution of sodium hydroxide and ammonium persulfate to react to obtain Cu (OH) vertically growing on the surface of the foamy copper2A nanowire array foam;
(2) the Cu (OH) obtained in the step (1)2Calcining the nanowire array foam in a muffle furnace to obtain CuO nanowire array foam;
(3) respectively immersing the CuO nanowire array foam obtained in the step (2) into a polyvinylpyrrolidone solution and Cu (NO)3Soaking in the solution, taking out, cleaning, drying, and soaking in 0.01M Na2Reacting in the S solution to obtain CuO @ CuS nanowire array foam;
(4) and (4) soaking the CuO @ CuS nanowire array foam obtained in the step (3) in a hydrophobic functional molecule solution for a preset time, and then taking out the CuO @ CuS nanowire array foam to obtain the super-hydrophobic and super-oleophylic CuO @ CuS nanowire array foam.
Further, in the step (1), the concentration of the sodium hydroxide solution is 1.0-10.0M, and the concentration of ammonium persulfate is 0.1-1.0M; the total volume of the solution of the sodium hydroxide and the ammonium persulfate is 100-200 mL.
Further, the temperature of the calcination in the step (2) is 100-200 ℃, and the time is 1-2 h.
Further, the concentration of the polyvinylpyrrolidone solution in the step (3) is 1.0-10.0g/L, the volume of the solution is 60-100mL, and the soaking time is 30-60 min.
Further, the Cu (NO) in the step (3)3The concentration of the solution is 0.05-5.0M, and the solution isThe volume is 60-100mL, and the soaking time is 30-60 min.
Further, the Na in the step (3)2The concentration of the S solution is 0.01-1.00M, the volume of the solution is 60-100mL, and the reaction time is 1-2 h.
Further, the hydrophobic functional molecule in the step (4) includes any one of polydimethylsiloxane, octadecyl mercaptan and fluorosilane.
By means of the scheme, the method for preparing the self-heating nanowire array foam can realize quick enrichment and recovery of crude oil, and has the following technical effects:
1. the CuO @ CuS nanowire array foam synthesized by in-situ growth and epitaxial growth has stronger light absorption in the range of 200-2500nm, and the problem of insufficient light absorption of the existing photothermal conversion material is solved;
2. the CuO nanowire and CuS nanosheet structures have larger specific surface areas, the light absorption area of the whole material can be increased, the sunlight utilization rate is further enhanced, and the nanowire array foam composed of the nanosheets is more beneficial to enrichment and recovery of crude oil;
3. the surface of the material is modified by hydrophobic functional molecules, and the whole material shows super-hydrophobic and super-oleophilic properties, so that the problem that the conventional photothermal conversion material cannot be stably stored under the complex condition of seawater is solved;
4. the whole synthesis process is simple, the size of the substrate material can be adjusted to adapt to different crude oil recovery scenes, and the method is low in cost and has a wide market.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is an SEM image of a CuO @ CuS @ PDMS nanowire array foam;
FIG. 2 is an ultraviolet-visible near-infrared absorption spectrum of CuO, CuO @ CuS @ PDMS nanowire array foam;
FIG. 3 is a graph of the cyclic test of the surface temperature variation with time of CuO @ CuS @ PDMS nanowire array foam under the sun intensity;
FIG. 4 is an SEM image of a CuO @ CuS @ PDMS nanowire array foam after six cycles of crude oil enrichment under the intensity of sunlight.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The embodiment provides a preparation method of self-heating nanowire array foam, which comprises the following steps:
(1) placing the pretreated foamy copper into a mixed solution of sodium hydroxide and ammonium persulfate to react to obtain Cu (OH) vertically growing on the surface of the foamy copper2A nanowire array foam;
(2) the Cu (OH) obtained in the step (1)2Calcining the nanowire array foam in a muffle furnace to obtain CuO nanowire array foam;
(3) respectively immersing the CuO nanowire array foam obtained in the step (2) into a polyvinylpyrrolidone (pvp) solution and Cu (NO)3Soaking in the solution, taking out, cleaning, drying, and soaking in 0.01M Na2Reacting in the S solution to obtain CuO @ CuS nanowire array foam;
(4) and (4) soaking the CuO @ CuS nanowire array foam obtained in the step (3) in a hydrophobic functional molecule solution for a preset time, and then taking out the CuO @ CuS nanowire array foam to obtain the super-hydrophobic and super-oleophylic CuO @ CuS nanowire array foam.
The preparation method of the self-heating nanowire array foam comprises the steps of firstly growing a layer of Cu (OH) on the surface of foam copper by an in-situ growth method2The preparation method comprises the following steps of (1) preparing a nanowire array, and then converting the nanowire array into a CuO nanowire array with a stable structure through calcination; then growing a layer of compact CuS nano-sheets on the surface of the CuO nano-wire array by an epitaxial growth method to form CuO @ CuS nano-wire array foam with large specific surface area and wide spectral absorption; and modifying the surface of the foam by using hydrophobic functional molecules to obtain the super-hydrophobic super-oleophilic CuO @ CuS nanowire array foam with a contact angle of 151 degrees. This is achieved byThe nano-wire array foam composed of the nano-sheets is beneficial to the enrichment of crude oil, has a high photo-thermal conversion effect, and can raise the temperature of the crude oil with high viscosity to about 50 ℃ by the heat generated by the nano-sheets under the sunlight intensity, so that the viscosity of the crude oil is greatly reduced, and the nano-wire array foam has a wide market prospect for the enrichment and recovery of the crude oil with high viscosity. Meanwhile, the prepared CuO @ CuS nanowire array foam has a wide light absorption range and a large specific surface area, and has strong light absorption in the range of 200-2500 nm; compared with the original copper foam, the CuO @ CuS nanowire array foam has the advantages that the photothermal conversion efficiency and the crude oil enrichment efficiency are remarkably improved.
In this embodiment, the concentration of the sodium hydroxide solution in step (1) is 1.0-10.0M, and the concentration of ammonium persulfate is 0.1-1.0M; the total volume of the solution of the sodium hydroxide and the ammonium persulfate is 100-200 mL.
In this embodiment, the temperature of the calcination in step (2) is 100-200 ℃ and the time is 1-2 h.
In this embodiment, the concentration of the polyvinylpyrrolidone solution in step (3) is 1.0-10.0g/L, the volume of the solution is 60-100mL, and the soaking time is 30-60 min.
In this example, the Cu (NO) in step (3)3The concentration of the solution is 0.05-5.0M, the volume of the solution is 60-100mL, and the soaking time is 30-60 min.
In this example, Na is mentioned in step (3)2The concentration of the S solution is 0.01-1.00M, the volume of the solution is 60-100mL, and the reaction time is 1-2 h.
In this embodiment, the hydrophobic functional molecule in step (4) includes any one of polydimethylsiloxane, octadecyl mercaptan, and fluorosilane.
Example 1
The treated foam copper (1X 3 cm)3) Ultrasonic cleaning in dilute hydrochloric acid, acetone and absolute ethyl alcohol for 2 min, washing with deionized water, and drying in air. Preparing 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, taking 100ml of each solution in a beaker, and uniformly stirring. Soaking cleaned foam copper in the above mixed solution at room temperatureThe reaction is carried out for 20 min. And taking out the sample when the surface color of the foam copper is changed into light blue, alternately washing the sample for a plurality of times by using absolute ethyl alcohol and deionized water, placing the sample in a vacuum drying oven, and drying the sample for 1h at the temperature of 60 ℃. The dried sample is placed in a muffle furnace and heated to 180 ℃, and the sample is taken out after 1 h. Then, a 2g/L solution of pvc and 0.05M of Cu (NO) were prepared3Pouring 100mL of the solution into two beakers respectively, placing the calcined sample into a beaker containing a pvc solution, soaking for 30min at room temperature, and taking out; then placing in a container containing Cu (NO)3Soaking the solution in a beaker at room temperature for 30min, taking out, washing with deionized water, and drying in air. Then 0.01M Na was prepared2Pouring 100mL of S solution into a beaker, and placing the washed sample in a beaker containing Na2And reacting the S solution in a beaker at room temperature for 1 hour, taking out a sample, alternately washing the sample with absolute ethyl alcohol and deionized water for several times, placing the sample in a vacuum drying oven, and drying the sample at 60 ℃ for 1 hour. Then preparing 0.1g/mL of Polydimethylsiloxane (PDMS) n-hexane solution, pouring 100mL of the PDMS n-hexane solution into a beaker, soaking at room temperature for 3h, taking out, and drying at room temperature. The change of the surface color of the copper foam can be clearly observed during the reaction process.
Fig. 1 is an SEM picture (an inset at the upper right is an enlarged partial region) of the CuO @ CuS @ PDMS nanowire array foam, and it can be seen that the surface of the CuO nanowire is uniformly coated by a layer of dense CuS nanosheet, and this novel structure not only increases the specific surface area, but also is beneficial to the enrichment of crude oil.
Fig. 2 is a picture of an ultraviolet-visible near-infrared absorption spectrum of CuO, CuO @ CuS @ PDMS nanowire array foam, and it can be seen from the spectrogram that the CuO @ CuS @ PDMS nanowire array foam has very strong light absorption performance from an ultraviolet region to a near-infrared region, indicating its efficient photo-thermal conversion performance. Through a test of the wettability of the surface of the CuO @ CuS @ PDMS nanowire array foam, water drops in air are spherical on the surface of a sample, the contact angle of water on the surface of the sample is about 151 +/-0.6 degrees, and the requirement of super-hydrophobicity is met. The oleophilic property of the sample is tested by dripping oil (taking n-hexane as an example) on the surface of the sample, the oil reaches the surface of the sample and is immediately wetted, the contact angle is 0 degrees, and the super-oleophilic property of the sample is shown. By the surface temperature conditions of CuO @ CuS @ PDMS nanowire array foam at different times under the sunlight intensity, the surface temperature of a sample can be maintained at about 75 ℃ when the sample is irradiated for 80s, and the efficient and rapid photothermal conversion efficiency is shown. Through the change of the surface temperature of the foamy copper, the CuO nanowire array foam and the CuO @ CuS @ PDM nanowire array foam with the irradiation time under the sunlight intensity, the temperature of the foamy copper and the CuO foam is not as high as that of the CuO @ CuS @ PDMS foam all the time under the same illumination intensity, when a light source is turned off, the temperature of a sample can be rapidly reduced, and the material capable of rapidly raising and reducing the temperature is very favorable for heating treatment and enrichment of crude oil.
FIG. 3 is a cyclic test chart of the surface temperature change with time under the sunlight intensity of the CuO @ CuS @ PDMS nanowire array foam, and it can be seen that the photothermal conversion efficiency is basically kept unchanged through six times of cyclic illumination tests. The surface temperature changes along with time when crude oil enrichment is carried out on CuO @ CuS @ PDMS nanowire array foam under the sunlight intensity, the obtained sample surface temperature is quickly transferred to the crude oil surface, and a high transfer efficiency is kept at 80 s. From the temperature dependence of the crude oil viscosity, it can be seen that the viscosity of the crude oil rapidly decreases as the temperature increases, and when the temperature increases to 70 ℃, the crude oil assumes a fluid state of flow, while from the interpolated plot it is also apparent that the viscous crude oil has become fluid and has flowed down the bottom of the bottle as the temperature increases to 70 ℃.
FIG. 4 is an SEM picture of the CuO @ CuS @ PDMS nanowire array foam after crude oil enrichment cycle is performed for six times under the sunlight intensity, and it can be obviously seen that the nanowire array of the sample still maintains uniform array morphology and has good structural stability.
Example 2
The treated foam copper (1X 3 cm)3) Ultrasonic cleaning in dilute hydrochloric acid, acetone and absolute ethyl alcohol for 2 min, washing with deionized water, and drying in air. Preparing 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, taking 100ml of each solution in a beaker, and uniformly stirring. Immersing the cleaned foam copper into the mixed solution,the reaction was carried out at room temperature for 60 min. And taking out the sample when the surface color of the foam copper is changed into light blue, alternately washing the sample for a plurality of times by using absolute ethyl alcohol and deionized water, placing the sample in a vacuum drying oven, and drying the sample for 1h at the temperature of 60 ℃. The dried sample is placed in a muffle furnace and heated to 180 ℃, and the sample is taken out after 1 h. Then, a 2g/L solution of pvc and 0.05M of Cu (NO) were prepared3Pouring 100mL of the solution into two beakers respectively, placing the calcined sample into a beaker containing a pvc solution, soaking for 30min at room temperature, and taking out; then placing in a container containing Cu (NO)3Soaking the solution in a beaker at room temperature for 30min, taking out, washing with deionized water, and drying in air. Then 0.01M Na was prepared2Pouring 100mL of S solution into a beaker, and placing the washed sample in a beaker containing Na2And reacting the S solution in a beaker at room temperature for 1 hour, taking out a sample, alternately washing the sample with absolute ethyl alcohol and deionized water for several times, placing the sample in a vacuum drying oven, and drying the sample at 60 ℃ for 1 hour. Then preparing 0.1g/mL of Polydimethylsiloxane (PDMS) n-hexane solution, pouring 100mL of the PDMS n-hexane solution into a beaker, soaking at room temperature for 3h, taking out, and drying at room temperature.
Example 3
The treated foam copper (1X 3 cm)3) Ultrasonic cleaning in dilute hydrochloric acid, acetone and absolute ethyl alcohol for 2 min, washing with deionized water, and drying in air. Preparing 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, taking 100ml of each solution in a beaker, and uniformly stirring. The cleaned copper foam was immersed in the above mixed solution and reacted at room temperature for 20 min. And taking out the sample when the surface color of the foam copper is changed into light blue, alternately washing the sample for a plurality of times by using absolute ethyl alcohol and deionized water, placing the sample in a vacuum drying oven, and drying the sample for 1h at the temperature of 60 ℃. The dried sample is placed in a muffle furnace and heated to 200 ℃ for 1h, and then the sample is taken out. Then, a 2g/L solution of pvc and 0.05M of Cu (NO) were prepared3Pouring 100mL of the solution into two beakers respectively, placing the calcined sample into a beaker containing a pvc solution, soaking for 30min at room temperature, and taking out; then placing in a container containing Cu (NO)3Soaking in a beaker of the solution at room temperature for 30min, taking out, washing with deionized water, and dryingAnd then dried in air. Then 0.01M Na was prepared2Pouring 100mL of S solution into a beaker, and placing the washed sample in a beaker containing Na2And reacting the S solution in a beaker at room temperature for 1 hour, taking out a sample, alternately washing the sample with absolute ethyl alcohol and deionized water for several times, placing the sample in a vacuum drying oven, and drying the sample at 60 ℃ for 1 hour. Then preparing 0.1g/mL of Polydimethylsiloxane (PDMS) n-hexane solution, pouring 100mL of the PDMS n-hexane solution into a beaker, soaking at room temperature for 3h, taking out, and drying at room temperature.
Example 4
The treated foam copper (1X 3 cm)3) Ultrasonic cleaning in dilute hydrochloric acid, acetone and absolute ethyl alcohol for 2 min, washing with deionized water, and drying in air. Preparing 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, taking 100ml of each solution in a beaker, and uniformly stirring. The cleaned copper foam was immersed in the above mixed solution and reacted at room temperature for 20 min. And taking out the sample when the surface color of the foam copper is changed into light blue, alternately washing the sample for a plurality of times by using absolute ethyl alcohol and deionized water, placing the sample in a vacuum drying oven, and drying the sample for 1h at the temperature of 60 ℃. The dried sample is placed in a muffle furnace and heated to 180 ℃, and the sample is taken out after 1 h. Then, a 2g/L solution of pvc and 0.05M of Cu (NO) were prepared3Pouring 100mL of the solution into two beakers respectively, placing the calcined sample into a beaker containing a pvc solution, soaking for 30min at room temperature, and taking out; then placing in a container containing Cu (NO)3Soaking the solution in a beaker at room temperature for 30min, taking out, washing with deionized water, and drying in air. Then 0.01M Na was prepared2Pouring 100mL of S solution into a beaker, and placing the washed sample in a beaker containing Na2And reacting the S solution in a beaker at room temperature for 1 hour, taking out a sample, alternately washing the sample with absolute ethyl alcohol and deionized water for several times, placing the sample in a vacuum drying oven, and drying the sample for 2 hours at the temperature of 60 ℃. Then preparing 0.1g/mL of Polydimethylsiloxane (PDMS) n-hexane solution, pouring 100mL of the PDMS n-hexane solution into a beaker, soaking at room temperature for 3h, taking out, and drying at room temperature.
Example 5
The treated foam copper (1X 3 cm)3) Ultrasonic cleaning in dilute hydrochloric acid, acetone and absolute ethyl alcohol for 2 min, washing with deionized water, and drying in air. Preparing 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, taking 100ml of each solution in a beaker, and uniformly stirring. The cleaned copper foam was immersed in the above mixed solution and reacted at room temperature for 20 min. And taking out the sample when the surface color of the foam copper is changed into light blue, alternately washing the sample for a plurality of times by using absolute ethyl alcohol and deionized water, placing the sample in a vacuum drying oven, and drying the sample for 1h at the temperature of 60 ℃. The dried sample is placed in a muffle furnace and heated to 180 ℃, and the sample is taken out after 1 h. Then, a 2g/L solution of pvc and 0.05M of Cu (NO) were prepared3Pouring 100mL of the solution into two beakers respectively, placing the calcined sample into a beaker containing a pvc solution, soaking for 30min at room temperature, and taking out; then placing in a container containing Cu (NO)3Soaking the solution in a beaker at room temperature for 30min, taking out, washing with deionized water, and drying in air. Then 0.1M Na was prepared2Pouring 100mL of S solution into a beaker, and placing the washed sample in a beaker containing Na2And reacting the S solution in a beaker at room temperature for 1 hour, taking out a sample, alternately washing the sample with absolute ethyl alcohol and deionized water for several times, placing the sample in a vacuum drying oven, and drying the sample at 60 ℃ for 1 hour. Then preparing 0.1g/mL of Polydimethylsiloxane (PDMS) n-hexane solution, pouring 100mL of the PDMS n-hexane solution into a beaker, soaking at room temperature for 3h, taking out, and drying at room temperature.
Example 6
The treated foam copper (1X 3 cm)3) Ultrasonic cleaning in dilute hydrochloric acid, acetone and absolute ethyl alcohol for 2 min, washing with deionized water, and drying in air. Preparing 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, taking 100ml of each solution in a beaker, and uniformly stirring. The cleaned copper foam was immersed in the above mixed solution and reacted at room temperature for 20 min. And taking out the sample when the surface color of the foam copper is changed into light blue, alternately washing the sample for a plurality of times by using absolute ethyl alcohol and deionized water, placing the sample in a vacuum drying oven, and drying the sample for 1h at the temperature of 60 ℃. The dried sample is placed in a muffle furnace and heated to 180 ℃, and the sample is taken out after 1 h. Then, a 2g/L solution of pvc and 0.05M of Cu (NO) were prepared3Pouring 100mL of the solution into two beakers respectively, placing the calcined sample into a beaker containing a pvc solution, soaking for 30min at room temperature, and taking out; then placing in a container containing Cu (NO)3Soaking the solution in a beaker at room temperature for 30min, taking out, washing with deionized water, and drying in air. Then 0.01M Na was prepared2Pouring 100mL of S solution into a beaker, and placing the washed sample in a beaker containing Na2And reacting the S solution in a beaker at room temperature for 1 hour, taking out a sample, alternately washing the sample with absolute ethyl alcohol and deionized water for several times, placing the sample in a vacuum drying oven, and drying the sample at 60 ℃ for 1 hour. And then preparing 0.1g/mL fluorosilane solution, pouring 100mL fluorosilane solution into a beaker, soaking for 3h at room temperature, taking out, and drying at room temperature.
Referring to tables 1 and 2, table 1 shows the results of the crude oil adsorption and recovery amounts of the CuO @ CuS @ PDMS nanowire array foam in example 1 under the intensity of sunlight;
table 2 shows the results of 8 cycles of the crude oil adsorption and recovery of the CuO @ CuS @ PDMS nanowire array foam of example 1 under the sunlight intensity.
Table 1 results of crude oil adsorption and recovery in the case of CuO @ CuS @ PDMS nanowire array foam under one sunlight intensity in example 1
Table 2 results of 8 cycles of crude oil adsorption and recovery under one sunlight intensity for CuO @ CuS @ PDMS nanowire array foams in example 1
Enriching time: 300s
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A preparation method of self-heating nanowire array foam is characterized by comprising the following steps:
(1) placing the pretreated foamy copper into a mixed solution of sodium hydroxide and ammonium persulfate to react to obtain Cu (OH) vertically growing on the surface of the foamy copper2A nanowire array foam; the concentration of sodium hydroxide is 1.0-10.0M, and the concentration of ammonium persulfate is 0.1-1.0M; the total volume of the solution of sodium hydroxide and ammonium persulfate is 100-200 mL;
(2) the Cu (OH) obtained in the step (1)2Calcining the nanowire array foam in a muffle furnace to obtain CuO nanowire array foam; the calcining temperature is 100-200 ℃, and the time is 1-2 h;
(3) respectively immersing the CuO nanowire array foam obtained in the step (2) into a polyvinylpyrrolidone solution and Cu (NO)3Soaking in the solution, taking out, cleaning, drying, and soaking in 0.01M Na2Reacting in the S solution to obtain CuO @ CuS nanowire array foam; the concentration of the polyvinylpyrrolidone solution is 1.0-10.0g/L, the volume of the solution is 60-100mL, and the soaking time is 30-60 min; the Cu (NO)3The concentration of the solution is 0.05-5.0M, the volume of the solution is 60-100mL, and the soaking time is 30-60 min; the Na is2The concentration of the S solution is 0.01-1.00M, the volume of the solution is 60-100mL, and the reaction time is 1-2 h;
(4) immersing the CuO @ CuS nanowire array foam obtained in the step (3) into a hydrophobic functional molecule solution for soaking for a preset time, and then taking out the soaked CuO @ CuS nanowire array foam to obtain super-hydrophobic and super-oleophylic CuO @ CuS nanowire array foam which is used for rapidly heating and cooling through light absorption in the range of 200-2500nm and is beneficial to enrichment and recovery of crude oil through self-heat generation; the hydrophobic functional molecule comprises any one of polydimethylsiloxane, octadecyl mercaptan and fluorosilane.
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| CN110849953B (en) * | 2019-11-22 | 2022-10-25 | 曲阜师范大学 | Loaded Cu 2 Biosensor made of O-CuO nanowire array composite material and application of biosensor |
| CN111545220A (en) * | 2020-04-03 | 2020-08-18 | 上海工程技术大学 | CuS/CuO/Cu nanowire heterojunction array material and preparation and application thereof |
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