CN113912043A - Preparation method of graphene/carbon nanotube composite array material - Google Patents
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Abstract
A preparation method of a graphene/carbon nanotube composite array material comprises the following steps: (1) preparing a catalyst precursor with a layered material as a carrier and iron, cobalt, nickel, molybdenum, copper or rare earth elements as active components by an ion exchange method, and calcining to obtain the catalyst-loaded layered material; (2) hydrogen is used as catalyst etching gas, hydrocarbon gas is used as carbon source, and the graphene sheet/carbon nanotube array vertically grown between substrate layers is obtained by a radio frequency plasma enhanced chemical vapor deposition method under the action of the catalyst. The preparation method has the advantages of simple preparation process, low energy consumption, high product purity and large-scale production; the prepared graphene sheet/carbon nano tube has the advantages of regular growth arrangement, high quality, high yield and the like; has excellent ion exchange performance and a layered structure, and can be simultaneously used as a good catalyst carrier and a composite material growth substrate.
Description
Technical Field
The invention belongs to the field of functional materials, and relates to preparation of a graphene/carbon nanotube composite array material.
Background
Graphene is widely studied because its two-dimensional structure has unique physical and chemical properties, and in addition, has been widely used in energy storage and electronic devices due to its high specific surface area and excellent electrical conductivity. Despite these particular properties, graphene has an intrinsic agglomeration effect in its planar structure due to van der waals forces, which generally greatly reduces its specific surface area. The uniform one-dimensional structure of carbon nanotubes makes them less prone to agglomeration than graphene, but the specific surface area of carbon nanotubes is smaller than graphene. In order to combine the advantages of two-dimensional graphene and one-dimensional carbon nanotubes, researchers have made many attempts to compound graphene and carbon nanotubes in order to maintain the high specific surface area of graphene by using the one-dimensional characteristics of carbon nanotubes as a matrix. However, these graphene/carbon nanotube composites are generally prepared by physically mixing carbon nanotubes and graphene, which makes it difficult for graphene to be uniformly separated by carbon nanotubes, and thus, a composite material prepared by simply mixing carbon nanotubes and graphene is not an effective method for overcoming agglomeration.
Disclosure of Invention
The invention aims to provide a preparation method of a novel graphene/carbon nano tube composite array material, which takes a layered material as a catalyst carrier and a growth substrate, and leads a carbon source and reducing gas into a plasma enhanced chemical vapor deposition reactor under the action of a catalyst to obtain a graphene sheet/carbon nano tube array which is orderly arranged, and has good application prospect in various fields.
The invention relates to a preparation method of a graphene sheet/carbon nanotube array material, which comprises the following steps;
(1) preparation of the catalyst: a lamellar material having a particle size of 4 to 8mm is mixed with distilled water to form a suspension. Then, preparing the precursor of the catalyst active component into homogeneous solution, pouring the layered material suspension, heating and stirring at the same time, wherein the stirring temperature is preferably 90 ℃ for 12 hours, and carrying out ion exchange reaction between material layers in the process. Filtering, drying and finally calcining to obtain the layered catalyst.
(2) Preparing a graphene sheet/carbon nanotube array: the prepared catalyst substrate is uniformly paved at the bottom of the ceramic boat and is placed in the center of a heating area of the quartz tube. Before the reaction, introducing argon to discharge air in the reaction device, after the air is exhausted, closing the argon, opening a vacuum pump to ensure that the pressure p in the tube is less than 30 Pa, introducing hydrogen, heating the reactor in a hydrogen atmosphere, opening a plasma generator and setting radio frequency power after the reaction temperature is reached, and then introducing a carbon source gas to carry out the reaction, wherein the flow rate of the carbon source gas is 10-60 sccm, and the flow rate of the hydrogen is 5-30 sccm. And finally, turning off the plasma generator and the carbon source gas, and cooling to room temperature in a hydrogen atmosphere. And obtaining the graphene sheet/carbon nano tube array which is arranged in order.
The layered material in the step (1) is one of vermiculite, mica, kaolin or montmorillonite and the like; the active component of the catalyst is one or more of iron, cobalt, nickel, molybdenum, copper or rare earth elements, preferably a mixed catalyst of iron and molybdenum.
In the step (2), the carbon source gas is one or a mixture of methane, ethane, ethylene, acetylene, propane, propylene or toluene, the reaction temperature is set to be 600-1000 ℃ (preferably 700 ℃), the plasma radio frequency power is set to be 100-500W (preferably 300W), and the reaction time is maintained for 10-60 min (preferably 30 min).
The method synthesizes the graphene sheet/carbon nanotube material on the layered substrate by one step through a plasma enhanced chemical vapor deposition method, the synthesized graphene sheet can uniformly grow on the carbon nanotube, the agglomeration effect of graphene is reduced, the specific surface area of the carbon nanotube is increased, and the method has good application prospects in the fields of semiconductors, supercapacitors, field emission and the like. Meanwhile, the growth of the material between the substrate layers is in vertical orientation arrangement, the material has relatively uniform length and higher orderliness, and compared with the aggregation disordered carbon nano tube, the material has more advantages in the fields of electrical conductivity, thermal conductivity, material modification and the like.
The invention has the following beneficial effects: (1) the preparation method has the advantages of simple preparation process, low energy consumption, high product purity and large-scale production; (2) the graphene sheet/carbon nano tube prepared by the method has the advantages of regular growth arrangement, high quality, high yield and the like; (3) the layered material adopted by the invention belongs to natural minerals, has excellent ion exchange performance and layered structure, and can be used as a good catalyst carrier and a composite material growth substrate; (4) the carbon nano composite material obtained by the invention can be directly used for physical property detection and applied to energy related products.
Drawings
Fig. 1 is a diagram of an experimental apparatus for preparing a graphene sheet/carbon nanotube array according to the present invention.
Fig. 2 is a field emission scanning electron microscope image of the graphene sheet/carbon nanotube array prepared in example 1.
Fig. 3 is a transmission electron microscope image of the graphene sheet/carbon nanotube array prepared in example 1.
Fig. 4 is a field emission scanning electron microscope image of the graphene sheet/carbon nanotube array prepared in example 2.
Fig. 5 is a transmission electron microscope image of the graphene sheet/carbon nanotube array prepared in example 2.
Fig. 6 is a field emission scanning electron microscope image of the graphene sheet/carbon nanotube array prepared in example 3.
Fig. 7 is a transmission electron microscope image of the graphene sheet/carbon nanotube array prepared in example 3.
Specific preparation method
The invention is described in detail below with reference to the figures and specific embodiments.
The methods described in the following examples are conventional methods unless otherwise specified; the material reagents, unless otherwise specified, are commercially available.
Example 1, graphene sheet/carbon nanotube arrays were prepared.
In the first step, a catalyst is prepared.
Vermiculite with a particle size of 4-8mm is mixed with distilled water to form a suspension. Subsequently, iron nitrate (Fe (NO)3)3·9H2O), ammonium molybdate ((NH)4)6Mo7O24·4H2O) to prepare homogeneous solution, and fully preparing the two solutionsAfter mixing, the vermiculite suspension was slowly poured in while stirring, and the resulting mixture was held at 90 ℃ for 12 hours, during which time ion exchange was carried out between the vermiculite layers, and Ca was added2+，Mg2+，K+And Na+Isoexchange to Fe3+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Fe/Mo/vermiculite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared vermiculite was spread evenly on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to ensure that the pressure in the vacuum pump is 26 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 700 ℃, adjusting the power to 300W, introducing a carbon source gas, namely methane after 10 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and reacting for 30 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between the vermiculite layers and arranged in order.
Example 2.
In the first step, a catalyst is prepared.
Vermiculite with a particle size of 4-8mm is mixed with distilled water to form a suspension. Subsequently, iron nitrate (Fe (NO)3)3·9H2O), ammonium molybdate ((NH)4)6Mo7O24·4H2O) preparing homogeneous solution, mixing the two solutions, slowly pouring vermiculite suspension while stirring, maintaining the obtained mixture at 90 deg.C for 12 hr, performing ion exchange between vermiculite layers, and adding Ca2+，Mg2+，K+And Na+Isoexchange to Fe3+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Fe/Mo/vermiculite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared vermiculite was spread evenly on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the tube to be 20 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 800 ℃, adjusting the power to be 200W, introducing a carbon source gas, namely methane after 10 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and the reaction time is 30 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between the vermiculite layers and arranged in order. Compared with example 1, the wall of the carbon nanotube is thickened, and the number of graphene sheets growing on the wall of the tube is reduced.
Example 3.
In the first step, a catalyst is prepared.
Vermiculite with a particle size of 4-8mm is mixed with distilled water to form a suspension. Subsequently, iron nitrate (Fe (NO)3)3·9H2O), ammonium molybdate ((NH)4)6Mo7O24·4H2O) preparing homogeneous solution, mixing the two solutions, slowly pouring vermiculite suspension while stirring, maintaining the obtained mixture at 90 deg.C for 12 hr, performing ion exchange between vermiculite layers, and adding Ca2+，Mg2+，K+And Na+Isoexchange to Fe3+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Fe/Mo/vermiculite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared vermiculite was spread evenly on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the tube to be 10 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 600 ℃, adjusting the power to be 400W, introducing carbon source gas methane after 10 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and the reaction time is 30 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between the vermiculite layers and arranged in order. Compared with the embodiment 1, the carbon nanotube has a thinner tube wall, and the number of graphene sheets growing on the tube wall is increased.
Example 4.
In the first step, a catalyst is prepared.
Vermiculite with a particle size of 4-8mm is mixed with distilled water to form a suspension. Subsequently, iron nitrate (Fe (NO)3)3·9H2O), ammonium molybdate ((NH)4)6Mo7O24·4H2O) preparing homogeneous solution, mixing the two solutions, slowly pouring vermiculite suspension while stirring, maintaining the obtained mixture at 90 deg.C for 12 hr, performing ion exchange between vermiculite layers, and adding Ca2+，Mg2+，K+And Na+Isoexchange to Fe3+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Fe/Mo/vermiculite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared vermiculite was spread evenly on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the tube to be 25 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 700 ℃, adjusting the power to be 200W, introducing a carbon source gas, namely methane after 50 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and the reaction time is 30 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. The graphene sheet/carbon nanotube array growing between vermiculite layers and arranged regularly is obtained, the growth time is prolonged, and the length of the graphene sheet/carbon nanotube is increased compared with that of the graphene sheet/carbon nanotube array in example 1.
Example 5.
In the first step, a catalyst is prepared.
Mica was used as the composite growth substrate and mixed with distilled water to form a suspension. Subsequently, cobalt nitrate (Co (NO)3)2·6H2O) and ammonium molybdate ((NH)4)6Mo7O24·4H2O) preparing a homogeneous solution, mixing the two solutions thoroughly, slowly pouring the mica suspension while stirring, maintaining the mixture at 90 deg.C for 12 hours, during which ion exchange is carried out between the mica layers, and Ca is added2+，Mg2+，K+And Na+Is equiexchanged for Co2+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Co/Mo/mica catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared mica was uniformly spread on the bottom of a ceramic boat and placed in the center of the heating zone of a quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the tube to be 10 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 1000 ℃, adjusting the power to be 500W, introducing carbon source gas methane after 10 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and the reaction time is 20 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between mica layers and arranged in order.
Example 6.
In the first step, a catalyst is prepared.
Montmorillonite is used as a substrate and is mixed with distilled water to form a suspension. Subsequently, nickel nitrate (Ni (NO)3)2·6H2O) and copper nitrate (Cu (NO)3)2·6H2O) preparing homogeneous solution, mixing the two solutions, slowly pouring montmorillonite suspension while stirring, holding the obtained mixture at 90 deg.C for 12 hr, performing ion exchange between montmorillonite layers, and adding Ca2+，Mg2+，K+And Na+Exchange of equal for Ni2+，Cu2+. Finally filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Ni/Cu/montmorillonite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
An experimental apparatus is used, as shown in fig. 1, to uniformly spread the prepared montmorillonite on the bottom of the ceramic boat, and the montmorillonite is placed in the center of the heating area of the quartz tube. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the tube to be 5 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 900 ℃, adjusting the power to be 100W, introducing carbon source gas methane after 10 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and the reaction time is 60 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between the montmorillonite layers and arranged in order.
Example 7.
In the first step, a catalyst is prepared.
Kaolin was used as a base and mixed with distilled water to form a suspension. Subsequently, cobalt nitrate (Co (NO)3)2·6H2O) and neodymium nitrate (Nd (NO)3)3·5H2O) preparing a homogeneous solution, mixing the two solutions thoroughly, slowly pouring the kaolin suspension while stirring, maintaining the mixture at 90 ℃ for 12 hours, during which ion exchange is carried out between the kaolin layers, Ca being added2+，Mg2+，K+And Na+Is equiexchanged for Co2+，Nd3+. And finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Co/Nd/kaolin catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared kaolin was uniformly spread on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to ensure that the pressure in the vacuum pump is 28 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 700 ℃, adjusting the power to 300W, introducing a carbon source gas, namely methane after 10 min, wherein the flow rate ratio of the methane to the hydrogen is 3:2, and reacting for 30 min. Finally, the plasma generator and methane were turned off and cooled to room temperature under a hydrogen atmosphere of 20 sccm. And obtaining the graphene sheet/carbon nano tube array which grows between kaolin layers and is arranged orderly.
Example 8.
In the first step, a catalyst is prepared.
Mica sheets were used as a substrate and mixed with distilled water to form a suspension. Subsequently, iron nitrate (Fe (NO)3)3·9H2O) and lanthanum nitrate (La (NO)3)3·6H2O) preparing homogeneous solution, mixing the two solutions, slowly adding mica suspension while stirring, maintaining the obtained mixture at 90 deg.C for 12 hr, performing ion exchange between mica plates, and adding Ca2+，Mg2+，K+And Na+Isoexchange to Fe3+，La3+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Ni/Cu/mica catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared mica sheets were uniformly spread on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to ensure that the pressure in the vacuum pump is 5 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 800 ℃, adjusting the power to 300W, introducing a carbon source gas ethylene after 10 min, wherein the flow rate ratio of the ethylene to the hydrogen is 3:2, and the reaction time is 30 min. Finally, the plasma generator and the ethylene gas were turned off, and the mixture was cooled to room temperature under a hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between mica sheets and arranged in order.
Example 9, graphene sheet/carbon nanotube arrays were prepared.
In the first step, a catalyst is prepared.
Vermiculite with a particle size of 4-8mm is mixed with distilled water to form a suspension. Subsequently, iron nitrate (Fe (NO)3)3·9H2O), copper nitrate (Cu (NO)3)2·6H2O) preparing homogeneous solution, mixing the two solutions, slowly pouring vermiculite suspension while stirring, maintaining the obtained mixture at 90 deg.C for 12 hr, performing ion exchange between vermiculite layers, and adding Ca2+，Mg2+，K+And Na+Isoexchange to Fe3+,Cu2+. Finally, filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Fe/Cu/vermiculite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
The prepared vermiculite was spread evenly on the bottom of the ceramic boat and placed in the center of the heating zone of the quartz tube as shown in fig. 1 using an experimental apparatus. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the vacuum pump to be 25 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 800 ℃, adjusting the power to be 300W, introducing carbon source gas acetylene after 10 min, wherein the flow rate ratio of the acetylene to the hydrogen is 1:1, and the reaction time is 30 min. Finally, the plasma generator and acetylene gas are turned off, and the mixture is cooled to room temperature under the hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between the vermiculite layers and arranged in order.
Example 10, graphene sheet/carbon nanotube arrays were prepared.
In the first step, a catalyst is prepared.
Montmorillonite is used as a growth substrate and is mixed with distilled water to form a suspension. Subsequently, cobalt nitrate (Co (NO)3)2·6H2O), nickel nitrate (Ni (NO)3)2·6H2O) preparing homogeneous solution, mixing the two solutions, slowly pouring montmorillonite suspension while stirring to obtain mixture at 90 deg.CKeeping at 12 deg.C for 12 hr, during which ion exchange is carried out between montmorillonite layers to remove Ca2+，Mg2+，K+And Na+Is equiexchanged for Co2+,Ni2+. Finally filtering, drying and calcining for 2 hours at 300 ℃ to obtain the layered Co/Ni/montmorillonite catalyst.
And secondly, preparing the graphene sheet/carbon nanotube.
An experimental apparatus is used, as shown in fig. 1, to uniformly spread the prepared montmorillonite on the bottom of the ceramic boat, and the montmorillonite is placed in the center of the heating area of the quartz tube. Before the reaction, introducing argon to discharge air in the reaction device, after the air is completely discharged, closing the argon, opening a vacuum pump to enable the pressure in the tube to be 10 Pa, then heating the tube furnace in a hydrogen atmosphere with the flow rate of 20 sccm, opening a plasma generator when the temperature reaches 800 ℃, adjusting the power to be 500W, introducing carbon source gas acetylene after 10 min, wherein the flow rate ratio of the acetylene to the hydrogen is 1:1, and the reaction time is 10 min. Finally, the plasma generator and acetylene gas are turned off, and the mixture is cooled to room temperature under the hydrogen atmosphere of 20 sccm. Obtaining the graphene sheet/carbon nano tube array growing between the montmorillonite layers and arranged in order.
Claims (5)
1. A preparation method of a graphene sheet/carbon nanotube array material is characterized by comprising the following steps;
(1) mixing a layered material with the particle size of 4-8mm with distilled water to form a suspension; preparing a precursor of the active component of the catalyst into a homogeneous solution, pouring the layered material suspension while stirring, filtering, drying, and finally calcining to obtain a layered catalyst;
(2) uniformly spreading the prepared layered catalyst at the bottom of the ceramic boat, and placing the catalyst in the center of a heating area of a quartz tube; before the reaction, introducing argon to discharge air in the reaction device, after the air is exhausted, closing the argon, opening a vacuum pump to enable the pressure p in the tube to be less than 30 Pa, introducing hydrogen, heating the reactor in a hydrogen atmosphere, opening a plasma generator and setting radio frequency power after the reaction temperature is reached, and then introducing a carbon source gas to carry out the reaction, wherein the flow rate of the carbon source gas is 10-60 sccm, and the flow rate of the hydrogen is 5-30 sccm; finally, the plasma generator and the carbon source gas are closed, and the graphene sheets/carbon nanotube arrays are obtained after cooling to room temperature in a hydrogen atmosphere;
the layered material in the step (1) is one of vermiculite, mica, kaolin or montmorillonite; the active component of the catalyst is one or more of iron, cobalt, nickel, molybdenum, copper or rare earth elements;
the carbon source gas in the step (2) is one or a mixture of methane, ethane, ethylene, acetylene, propane, propylene or toluene, the reaction temperature is set to be 600-1000 ℃, the plasma radio frequency power is set to be 100-500W, and the reaction time is 10-60 min.
2. The method of claim 1, wherein the active component of the catalyst in step (1) is a mixed catalyst of iron and molybdenum.
3. The method of claim 1, wherein the reaction temperature in step (2) is 700 ℃.
4. The method of claim 1, wherein the RF power of the plasma in step (2) is 300W.
5. The method of claim 1, wherein the reaction time in step (2) is 30 min.
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Cited By (3)
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| CN115039791A (en) * | 2022-07-13 | 2022-09-13 | 塔里木大学 | Vermiculite antibacterial functional material and preparation method thereof |
| CN115215328A (en) * | 2022-07-26 | 2022-10-21 | 中国科学院上海硅酸盐研究所 | Bamboo forest-shaped graphene tube array and preparation method and application thereof |
| CN116425146A (en) * | 2023-05-22 | 2023-07-14 | 电子科技大学 | Method for growing carbon nanotube array by catalyzing propylene with Fe-Ni-Mo alloy |
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