Method for preparing graphene from graphene oxide

Abstract

The invention discloses a method for preparing graphene by using graphene oxide, and relates to the technical field of nano material preparation, the preparation method comprises the following components: construction of a reaction system: weighing graphene oxide powder, adding the graphene oxide powder into ionized water, fully dispersing the graphene oxide powder through a magnetic stirrer to form a uniform graphene oxide solution, and adding the uniform graphene oxide solution into the reaction system; according to the present invention, the sound energy focusing technology is introduced, and the high-precision sound energy focusing device is ingeniously utilized to accurately focus the high-frequency sound wave on the contact interface of the graphene oxide and the hydriodic acid, such that the energy density of the area is significantly improved so as to significantly improve the energy density of the area; and the local temperature and pressure are rapidly increased in a short time due to the fact that the temperature and the pressure are reduced, so that the reduction reaction of the graphene oxide is greatly accelerated, the collision frequency among molecules is further promoted through the vibration effect of sound waves, reactant molecules interact more frequently, and the reaction rate and efficiency are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of nano material preparation, in particular to a method for preparing graphene by using graphene oxide. Background Art

[0002] Graphene, as an outstanding representative of two-dimensional carbon materials, has attracted much attention since its discovery due to its excellent physical, chemical and electrical properties. Graphene has shown great application potential in many fields such as electronic devices, energy storage, and composite materials. However, the high-quality preparation of graphene has always been a key technical bottleneck restricting its widespread application. Among the many preparation methods, the reduction of graphene oxide is an important way to prepare graphene. This method removes the oxygen-containing functional groups in graphene oxide and restores its original conjugated structure to obtain graphene. However, traditional heating reduction technology often has problems such as inaccurate temperature control and uneven heating, resulting in uneven quality of the prepared graphene, which is difficult to meet the needs of high-end applications.

[0003] Although graphene has broad application prospects, its efficient and low-cost preparation technology has always been the key factor restricting its large-scale commercial application. Traditional graphene preparation methods, such as chemical reduction and thermal reduction, although they can produce a certain quality of graphene under laboratory conditions, have significant limitations. Chemical reduction often requires the use of a large amount of toxic and harmful reducing agents, which not only increases production costs, but also causes potential pollution to the environment. At the same time, it is difficult to accurately control the reaction conditions during the reduction process of chemical reduction, which easily leads to uneven quality and purity of graphene products, affecting subsequent applications. Thermal reduction requires high temperature conditions, huge energy consumption, and high equipment requirements, which is not conducive to energy conservation and emission reduction and sustainable development. These traditional methods also generally have problems such as slow reaction rate and many by-products, which further reduce the yield and purity of graphene.

[0004] Therefore, in view of the deficiencies and shortcomings of the prior art, the present invention proposes a method for preparing graphene using graphene oxide, which realizes rapid and efficient reduction of graphene oxide under mild conditions by introducing acoustic energy focusing technology and utilizing the energy focusing effect of acoustic waves in a specific area. Acoustic energy focusing not only significantly improves the energy density of the reaction area and accelerates the reduction reaction process, but also achieves fine regulation of the reaction conditions by precisely controlling the acoustic wave parameters, effectively reducing the occurrence of side reactions and improving the yield and purity of graphene. Summary of the invention

[0005] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a method for preparing graphene using graphene oxide. The method realizes efficient catalysis of the reaction system by introducing the acoustic energy focusing technology. The high-frequency sound waves are precisely focused on a specific area of ​​the reaction system by using a high-precision acoustic energy focusing device, which significantly improves the energy density of the area, thereby accelerating the reduction reaction of graphene oxide. The vibration effect of the sound waves promotes the collision frequency between molecules, further improving the reaction rate and efficiency. At the same time, through a precise control system, the reaction conditions are finely controlled, including the frequency, intensity and focusing position of the sound waves, thereby enhancing the controllability of the reaction and optimizing the distribution and quality of the product.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: a method for preparing graphene using graphene oxide, the specific steps of the preparation method are:

[0007] A method for preparing graphene using graphene oxide, the specific steps of the preparation method are:

[0008] Reaction system construction: Weigh graphene oxide powder, add it to ionized water, fully disperse it through a magnetic stirrer to form a uniform graphene oxide solution, add a reducing agent to the graphene oxide solution to form a reaction mixture, and place the mixture in a special reaction container;

[0009] Design of acoustic energy focusing device: construct a set of high-precision acoustic energy focusing device, including acoustic wave generator, acoustic lens and control system, through which high-frequency sound waves can be generated and focused to form a high-energy density sound field, which can accurately act on the specified area in the reaction system;

[0010] Acoustic energy focusing catalytic reaction: Start the acoustic wave generator and focus the acoustic wave on the interface between graphene oxide and the reducing agent through the acoustic lens. The energy of the acoustic wave increases the local temperature and pressure in the area, accelerating the reduction reaction of graphene oxide. At the same time, the vibration effect of the acoustic wave can promote the collision frequency between molecules, further accelerating the reaction rate.

[0011] Reaction condition optimization and monitoring: Use the control system to adjust the frequency, intensity and focus position of the sound waves, optimize the reaction conditions, and monitor the temperature, pressure and product changes of the reaction system online;

[0012] Product separation and purification: After the reaction is completed, the graphene product is separated by centrifugation and necessary washing and drying are performed.

[0013] Furthermore, the reducing agent selected for constructing the reaction system is hydroiodic acid, and the mass ratio of graphene oxide to hydroiodic acid is 1:2.

[0014] Furthermore, the reaction container selected for constructing the reaction system has good corrosion resistance and sealing properties, and an acoustic lens is fixedly installed on the bottom and side thereof, and the acoustic lens forms an angle of 45 degrees with the bottom surface of the container and is 5 cm away from the bottom edge of the container.

[0015] Furthermore, the acoustic energy focusing device is designed such that the acoustic wave generator can stably generate high-frequency acoustic waves with a frequency between 20 kHz and 100 kHz, the acoustic lens can focus the acoustic waves to a specified area in the reaction system, forming a high-energy-density acoustic field, increasing the temperature and pressure of the reaction area, and the control system can accurately adjust the frequency, intensity and duration of the output acoustic waves of the acoustic wave generator, and can monitor and adjust the working status of the acoustic lens.

[0016] Furthermore, the acoustic energy focusing catalytic reaction turns on the acoustic wave generator to generate a frequency of 40 kHz as an initial operating frequency and an initial intensity of 3 watts per square centimeter. The acoustic waves generated by the acoustic wave generator are transmitted to the acoustic lens through a conduction path, and the acoustic lens is used to highly focus the acoustic waves at the interface where the graphene oxide contacts the reducing agent.

[0017] Furthermore, the acoustic energy focusing catalytic reaction generates energy by focusing the sound waves at the contact interface, causing the local temperature of the area to rise by 20°C to 50°C in a short period of time, while the local pressure is significantly increased, thereby promoting the reduction reaction of graphene oxide.

[0018] Furthermore, the vibration effect of the acoustic energy focusing catalytic reaction sound waves also has an impact at the microscopic level, promoting the collision frequency between graphene oxide and reducing agent molecules at the microscopic level, thereby increasing the collision frequency between molecules, thereby further accelerating the reduction reaction rate of graphene oxide.

[0019] Furthermore, the reaction conditions are optimized and monitored. When the reaction rate is slow and the temperature and pressure rise is not obvious, the frequency is increased within the range of 5 kHz to 10 kHz. When the reaction is too violent, there are signs of side reactions, and the temperature and pressure exceed the preset safety range, the operating frequency of the sound wave generator is automatically reduced. When the reaction rate is slow and the product generation is insufficient, the frequency is gradually increased within the range of 0.2 watts to 1 watt per square centimeter. When the temperature rises too fast and the pressure exceeds the safety range, the energy output intensity is automatically reduced. When the focusing position is optimized, according to the distribution of product generation and the temperature and pressure data, it is found that the product generation in a certain area is small and the temperature and pressure distribution are uneven, and the angle and position of the acoustic lens are adjusted.

[0020] Furthermore, in the reaction condition optimization and monitoring, reaction monitoring and temperature monitoring are carried out in real time using high-precision temperature sensors to record the changing trend over time. Once the preset safety range is exceeded, the acoustic wave parameters are immediately adjusted to lower the temperature; pressure monitoring is carried out by means of the installed pressure sensor to monitor the pressure in the reaction vessel, and its changes over time and reaction progress are recorded. When the pressure rises abnormally, measures such as pressure relief and adjustment of acoustic wave parameters are taken; product change monitoring is carried out to monitor the concentration changes of reactants and products in real time, and the generation rate, conversion rate and selectivity of each product are recorded to evaluate the reaction progress and efficiency, and to realize automatic data collection to reduce human errors, regularly analyze data to evaluate the reaction condition optimization effect, and adjust the optimization strategy accordingly.

[0021] Furthermore, after the product separation and purification reaction is completed, the sonicator is stopped, the reaction mixture is taken out of the reaction vessel, impurities and unreacted raw materials in the reaction solution are removed by centrifugal separation to obtain a precipitate containing graphene, the precipitate is washed to remove residues attached to the surface of the graphene, and a high-purity graphene product is obtained by drying.

[0022] Compared with the prior art, the method for preparing graphene using graphene oxide has the following beneficial effects:

[0023] 1. The present invention introduces acoustic energy focusing technology and cleverly uses a high-precision acoustic energy focusing device to accurately focus high-frequency sound waves on the interface between graphene oxide and hydroiodic acid. This technology significantly improves the energy density in this area, causing the local temperature and pressure to rise rapidly in a short period of time, thereby greatly accelerating the reduction reaction of graphene oxide. The vibration effect of the sound wave also promotes the frequency of collisions between molecules, allowing the reactant molecules to interact more frequently, further improving the reaction rate and efficiency. Compared with traditional preparation methods, this innovative method greatly shortens the reaction time, reduces energy consumption, and improves production efficiency.

[0024] 2. The acoustic energy focusing catalytic reaction of the present invention not only accelerates the reaction process, but also realizes fine control of the reaction conditions through a precise control system. By adjusting the frequency, intensity and focusing position of the sound waves, the reaction conditions can be flexibly optimized to meet different preparation requirements. The temperature, pressure and product changes of the reaction system are monitored online, which provides a reliable basis for real-time adjustment of the reaction parameters to ensure that the reaction process is always in the optimal state. This high degree of controllability enables the prepared graphene products to have higher purity and more uniform morphology, while reducing the generation of by-products and improving the overall quality of the product. Therefore, it not only improves production efficiency, but also significantly enhances the market competitiveness of the product.

[0025] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The present invention is a flow chart of a method for preparing graphene using graphene oxide. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] A method for preparing graphene using graphene oxide, the specific steps of the preparation method are:

[0031] Preparation: weigh 10 grams of graphene oxide powder and slowly add it to 200 milliliters of deionized water. Through stirring and ultrasonic treatment, it is fully dispersed to form a uniform graphene oxide solution. According to the mass ratio of graphene oxide to hydroiodic acid of 1:2, weigh 20 grams of hydroiodic acid as a reducing agent, slowly add it dropwise to the graphene oxide solution, and continuously stir to form a reaction mixture. The reaction mixture is placed in a special reaction container. The reaction container has good corrosion resistance and sealing properties, and an acoustic lens is fixed on the bottom and side of the container. The acoustic lens is at a 45-degree angle to the bottom of the container and is about 5 cm away from the bottom edge of the container.

[0032] The acoustic energy focusing device is set up, the acoustic wave generator is turned on, its frequency is set to 40 kHz as the initial operating frequency, the acoustic wave intensity is set to an initial intensity of 3 watts per square centimeter, and the acoustic waves generated by the acoustic wave generator are transmitted to the acoustic lens through the conduction path, and the acoustic lens focuses the acoustic waves highly at the interface where the graphene oxide contacts the reducing agent.

[0033] During the reaction process, observe the changes in the reaction system, monitor the temperature and pressure changes in real time through the temperature sensors and pressure sensors installed in the reaction vessel, and optimize and monitor the reaction conditions based on the monitoring data: if the reaction rate is found to be slow and the temperature and pressure rise is not obvious, adjust the operating frequency to 45 kHz; if the reaction rate is found to be slow and the product generation is insufficient, increase the energy output intensity from 3 watts per square centimeter to 3.5 watts; if it is found that the product generation is small and the temperature and pressure distribution are uneven in a certain area, move the focus position to the edge area of ​​the reaction vessel and adjust the angle of the lens.

[0034] The reaction is terminated by stopping the sonicator after the reaction is completed, taking out the reaction mixture from the reaction vessel, removing impurities and unreacted raw materials in the reaction solution by centrifugal separation, obtaining a precipitate containing graphene, washing the precipitate with deionized water for multiple times to remove residues attached to the surface of the graphene, and drying the washed precipitate to obtain a high-purity graphene product.

[0035] Embodiment 2:

[0036] A method for preparing graphene using graphene oxide, the specific steps of the preparation method are:

[0037] Preparation: Accurately weigh 6 grams of graphene oxide powder and carefully add it to 120 milliliters of a special buffer solution. Use a magnetic stirrer and an ultrasonic cleaner to evenly disperse it to form a stable graphene oxide solution. According to the strict mass ratio of graphene oxide to hydroiodic acid of 1:2, accurately weigh 12 grams of hydroiodic acid as a reducing agent and slowly pour it into the graphene oxide solution while continuously stirring to ensure that the two are fully mixed to form a reaction mixture. Transfer the reaction mixture to a specially customized reaction container, which not only has excellent corrosion resistance and good sealing, but also has precise installation positions for the acoustic lenses on the bottom and sides. The acoustic lenses are at a standard 45-degree angle to the bottom of the container and are exactly 5 centimeters away from the bottom edge of the container.

[0038] The acoustic energy focusing device is set up, and the advanced acoustic wave generator is turned on. Its initial operating frequency is set to 40 kHz, and the acoustic wave intensity is set to 3 watts per square centimeter. The acoustic waves generated by the acoustic wave generator are smoothly transmitted to the acoustic lens along a carefully designed conduction path. Through the efficient focusing effect of the acoustic lens, the acoustic waves are highly concentrated at the key interface where graphene oxide contacts the reducing agent.

[0039] During the reaction process, with the help of high-precision temperature and pressure monitoring equipment, we closely monitor the temperature and pressure changes of the reaction system in real time, record their dynamic change trends over time in detail, and finely optimize and monitor the reaction conditions based on real-time monitoring data. If it is found that the reaction rate is relatively slow and the temperature and pressure increases are not obvious, the operating frequency will be gradually increased to 48 kHz in a timely manner.

[0040] When it is noticed that the product generation fails to meet expectations, the energy output intensity is steadily increased from 3 watts per square centimeter to 3.4 watts. Once it is found that the product generation in a specific area of ​​the reaction container is low and the temperature and pressure distribution are uneven, the focus position is quickly moved to that area and the angle of the lens is flexibly adjusted to achieve the best transmission effect of sound wave energy.

[0041] At the end of the reaction, when the signal indicating the completion of the reaction appears, the operation of the sonic generator is stopped immediately, and the reaction mixture is carefully taken out of the reaction vessel. Advanced centrifugal separation technology is used to effectively remove impurities and unreacted raw materials in the reaction solution, and a precipitate containing graphene is successfully obtained. A specially configured washing solution is used to carefully wash the precipitate for multiple times to completely remove the residues attached to the surface of the graphene. The washed precipitate is placed in a specific drying device and dried under suitable temperature and time conditions to finally obtain a high-purity graphene product.

[0042] Embodiment three:

[0043] A method for preparing graphene using graphene oxide, the specific steps of the preparation method are:

[0044] Preparation: Carefully weigh 15 grams of graphene oxide powder and slowly add it to 300 milliliters of specially treated mixed solvent (composed of organic solvents and inorganic solvents in a specific proportion). Use professional stirring equipment and ultrasonic dispersion equipment to fully mix and form a uniform graphene oxide solution. According to the strict mass ratio of graphene oxide to hydroiodic acid of 1:2, accurately weigh 30 grams of hydroiodic acid as a reducing agent, slowly inject it into the graphene oxide solution, and continue to stir evenly to ensure that the two are completely fused to form a reaction mixture. The reaction mixture is placed in a customized reaction vessel with excellent corrosion resistance and excellent sealing. The acoustic lenses on the bottom and sides are installed according to standard requirements. The angle between the acoustic lens and the bottom of the container is precisely 45 degrees, and it is kept at a precise position of 5 cm from the bottom edge of the container.

[0045] The acoustic energy focusing device is set up, and a high-performance acoustic wave generator is turned on. Its initial operating frequency is set to 40 kHz, and the acoustic wave intensity is set to 3 watts per square centimeter. The acoustic waves generated by the acoustic wave generator are smoothly transmitted to the acoustic lens through a specially designed high-quality conduction path. Through the precise focusing effect of the acoustic lens, the acoustic waves are highly focused at the critical interface where graphene oxide contacts the reducing agent.

[0046] During the reaction process, an advanced temperature, pressure and product concentration monitoring system is used to continuously monitor the temperature, pressure and product concentration changes of the reaction system in real time, and record in detail the relationship between the changing trends of these parameters over time and the reaction progress. The reaction conditions are scientifically optimized and monitored based on the monitoring data. If the reaction rate is found to be lower than expected and the temperature and pressure rise slowly, the operating frequency will be gradually increased to 46 kHz. If the product generation is found to be insufficient, the energy output intensity will be increased from 3.5 watts per square centimeter to 3.8 watts. Once it is detected that the product generation in a certain area is small and the temperature and pressure distribution are uneven, the focus position will be quickly adjusted to that area, and the angle of the lens will be cleverly adjusted to optimize the transmission efficiency of the sound wave energy and improve the uniformity and efficiency of the reaction.

[0047] Reaction termination treatment: When the reaction reaches the preset end conditions, the sound wave generator is decisively stopped, the reaction mixture is safely taken out of the reaction vessel, and the graphene product is separated from the reaction mixture by an efficient filtration separation method to remove impurities and unreacted raw materials. A special washing process is used to perform multiple fine washing operations on the separated graphene product to remove residues attached to the graphene surface. The washed graphene product is placed in professional drying equipment and dried under strictly controlled temperature and time conditions to finally obtain high-quality, high-purity graphene products.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A method for preparing graphene using graphene oxide, characterized in that: The specific steps of the preparation method are: Reaction system construction: Weigh graphene oxide powder, add it to ionized water, fully disperse it through a magnetic stirrer to form a uniform graphene oxide solution, add a reducing agent to the graphene oxide solution to form a reaction mixture, and place the mixture in a special reaction container; Design of acoustic energy focusing device: construct a set of high-precision acoustic energy focusing device, including acoustic wave generator, acoustic lens and control system, through which high-frequency sound waves can be generated and focused to form a high-energy density sound field, which can accurately act on the specified area in the reaction system; Acoustic energy focusing catalytic reaction: Start the acoustic wave generator and focus the acoustic wave on the interface between graphene oxide and the reducing agent through the acoustic lens. The energy of the acoustic wave increases the local temperature and pressure in the area, accelerating the reduction reaction of graphene oxide. At the same time, the vibration effect of the acoustic wave can promote the collision frequency between molecules, further accelerating the reaction rate. Reaction condition optimization and monitoring: Use the control system to adjust the frequency, intensity and focus position of the sound waves, optimize the reaction conditions, and monitor the temperature, pressure and product changes of the reaction system online; Product separation and purification: After the reaction is completed, the graphene product is separated by centrifugation and necessary washing and drying are performed.

2. A method for preparing graphene using graphene oxide according to claim 1, characterized in that: The reducing agent selected for constructing the reaction system is hydroiodic acid, and the mass ratio of graphene oxide to hydroiodic acid is 1:

2.

3. A method for preparing graphene using graphene oxide according to claim 1, characterized in that: The reaction container selected for constructing the reaction system has good corrosion resistance and sealing properties, and an acoustic lens is fixedly installed on the bottom and side of the reaction container, and the acoustic lens forms an angle of 45 degrees with the bottom surface of the container and is 5 cm away from the bottom edge of the container.

4. A method for preparing graphene using graphene oxide according to claim 1, characterized in that: The acoustic energy focusing device is designed such that the acoustic wave generator can stably generate high-frequency acoustic waves with a frequency between 20 kHz and 100 kHz. The acoustic lens can focus the acoustic waves to a specified area in the reaction system to form a high-energy-density acoustic field, thereby increasing the temperature and pressure in the reaction area. The control system can accurately adjust the frequency, intensity and duration of the output acoustic waves of the acoustic wave generator, and can monitor and adjust the working status of the acoustic lens.

5. A method for preparing graphene using graphene oxide according to claim 1, characterized in that: The acoustic energy focusing catalytic reaction starts the acoustic wave generator to generate a frequency of 40 kHz as an initial operating frequency and an initial intensity of 3 watts per square centimeter. The acoustic wave generated by the acoustic wave generator is transmitted to the acoustic lens through a conduction path, and the acoustic wave is highly focused at the interface where the graphene oxide contacts the reducing agent through the acoustic lens.

6. A method for preparing graphene using graphene oxide according to claim 5, characterized in that: The acoustic energy focusing catalytic reaction generates energy by focusing sound waves at the contact interface, causing the local temperature of the area to rise by 20° C. to 50° C. in a short period of time, while the local pressure is significantly increased, thereby promoting the reduction reaction of graphene oxide.

7. A method for preparing graphene using graphene oxide according to claim 5, characterized in that: The vibration effect of the acoustic energy focusing catalytic reaction sound waves also has an impact at the microscopic level, promoting the collision frequency between graphene oxide and reducing agent molecules at the microscopic level, thereby increasing the collision frequency between molecules, thereby further accelerating the reduction reaction rate of graphene oxide.

8. A method for preparing graphene using graphene oxide according to claim 1, characterized in that: The reaction condition optimization and monitoring reaction condition optimization, frequency optimization monitors that when the reaction rate is slow and the temperature and pressure rise is not obvious, the frequency is increased within the range of 5 kHz to 10 kHz. If it is monitored that the reaction is too violent, there are signs of side reactions, and the temperature and pressure exceed the preset safety range, the operating frequency of the sound wave generator is automatically reduced; intensity optimization, when it is monitored that the reaction rate is slow and the product generation is insufficient, the frequency is gradually increased within the range of 0.2 watts to 1 watt per square centimeter. If it is monitored that the temperature rises too quickly and the pressure exceeds the safety range, the energy output intensity is automatically reduced; focusing position optimization, according to the distribution of product generation and temperature and pressure data, it is found that the product generation in a certain area is small and the temperature and pressure distribution are uneven, and the angle and position of the acoustic lens are adjusted.

9. A method for preparing graphene using graphene oxide according to claim 1, characterized in that: In the reaction condition optimization and monitoring, reaction monitoring and temperature monitoring are carried out by using a high-precision temperature sensor for real-time monitoring, recording its changing trend over time. Once it exceeds the preset safety range, the acoustic wave parameters are immediately adjusted to reduce the temperature. Pressure monitoring is carried out by using an installed pressure sensor to monitor the pressure in the reaction container, recording its changes over time and reaction progress, and taking measures to release pressure and adjust acoustic wave parameters when the pressure rises abnormally; Product change monitoring: real-time monitoring of the concentration changes of reactants and products, recording the generation rate, conversion rate and selectivity of each product to evaluate the reaction progress and efficiency, and realizing automated data collection to reduce human errors. Regularly analyze data to evaluate the optimization effect of reaction conditions and adjust the optimization strategy accordingly.

10. The method for preparing graphene from graphene oxide according to claim 1, characterized in that: After the product separation and purification reaction is completed, the sonicator is stopped, the reaction mixture is taken out of the reaction container, impurities and unreacted raw materials in the reaction solution are removed by centrifugal separation to obtain a precipitate containing graphene, the precipitate is washed to remove residues attached to the surface of the graphene, and a high-purity graphene product is obtained by drying.

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