MoS2 conductive fabric material as well as preparation method and application thereof

Abstract

The invention provides a MoS2 conductive fabric material as well as a preparation method and application thereof. Polypyrrole is deposited on the surface of the non-woven fabric through a simple soaking polymerization method, then molybdenum disulfide and polydimethylsiloxane are evenly mixed and then coated on the non-woven fabric, integrated combination of a photo-thermal layer and an electric heating layer is achieved, and the surface temperature and the evaporation rate can be dynamically adjusted according to different illumination conditions. Hydrophobic treatment on the surface of the evaporator can effectively prevent salt crystallization, and the operation stability and the service life of the system are improved. The prepared MoS2 conductive fabric material is good in photo-thermal and electric heating performance, the water mass loss is 1.52 kg m <-2 > under illumination of one sun, and it is indicated that a MoS2 conductive fabric material evaporator for all-weather photo-thermal conversion has the higher evaporation rate; under the condition of no sun illumination, when the input voltage is 5V, the evaporation rate of the salt solution reaches 1.07 kg m <-2 > h <-1 >.

Description

Technical Field

[0001] The present invention relates to the technical field of solar interface water evaporation materials, and particularly to a MoS2 conductive fabric material, a preparation method thereof, and an application thereof. Background Art

[0002] Solar desalination has emerged as a new water purification solution due to its low energy consumption, high cost-effectiveness, and good environmental benefits. This technology uses highly solar-absorbing photothermal materials at the air-water interface to effectively convert sunlight into heat energy, thereby producing clean water with the lowest carbon emissions. However, despite the potential of solar energy, there are still some challenges, including the intermittency of solar energy, which is affected by sunlight and seasonal variations as well as weather conditions. The day-night cycle and unpredictable weather patterns can disrupt the continuity, stability, and overall efficiency of solar desalination, thus creating a significant gap between current technological capabilities and practical applications.

[0003] Molybdenum disulfide, as a type of semiconductor material, is considered an ideal photothermal material due to its inherent broadband absorption characteristics, low cost, easy structure control, and low environmental hazard. Polypyrrole is a conductive polymer material with great development prospects, having advantages such as good electrical conductivity, strong adhesion to fibers, easy synthesis, and environmental friendliness. However, due to the intermittency of solar energy, which is affected by sunlight and seasonal variations as well as weather conditions, and long-term evaporation leads to salt deposition on the evaporation surface, clogging the evaporator, affecting light absorption performance, continuous water supply, and the long-term stability of the evaporator. Summary of the Invention

[0004] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a MoS2 conductive fabric material, a preparation method thereof, and an application thereof, so as to solve the problem that the existing evaporator (i.e., the interfacial evaporation material) slows down or stops evaporation due to changes in light conditions and salt deposition on the evaporator surface during the evaporation process, improve the high-efficiency long-term stability of the evaporator, and perform all-weather solar desalination.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a preparation method of a MoS2 conductive fabric material, including the following steps: Deposit polypyrrole on the non-woven fabric to obtain a conductive fabric; Mix molybdenum disulfide and polydimethylsiloxane evenly and then coat them on the conductive fabric to obtain the MoS2 conductive fabric material.

[0006] Preferably, the preparation method of the conductive fabric specifically includes the following steps: Add an oxidizing agent to water to obtain a reaction solution; Place the non-woven fabric in the reaction solution and let it stand at 3 - 5 °C for 1 - 2 h. Then add pyrrole, anionic dopant, and cationic dopant, and let it stand at 3 - 5 °C for 5 - 6 h to obtain the conductive fabric.

[0007] Preferably, the oxidant is ferric chloride, the anionic dopant is sodium dodecylbenzenesulfonate, and the cationic dopant is cetyltrimethylammonium bromide.

[0008] Preferably, the preparation method of the molybdenum disulfide includes the following steps: Add the sulfur source and molybdenum source into water, stir, and then carry out hydrothermal reaction at 200 - 220 °C for 22 - 26 h, and freeze-dry to obtain molybdenum disulfide.

[0009] Preferably, the sulfur source is thiourea and the molybdenum source is ammonium molybdate tetrahydrate.

[0010] Preferably, in the step of adding the oxidant into water to obtain the reaction solution, the mass ratio of the oxidant to water is (2 - 3):(60 - 70); The mass ratio of the pyrrole, anionic dopant, and cationic dopant is (0.3 - 0.4):(0.01 - 0.02):(0.03 - 0.04); The mass ratio of the oxidant to the anionic dopant is (2 - 3):(0.01 - 0.02).

[0011] Preferably, in the step of adding the sulfur source and molybdenum source into water, the mass ratio of the sulfur source, molybdenum source, and water is (0.5 - 1):(1 - 2):(60 - 70).

[0012] Preferably, the non-woven fabric is made of a blend of cotton and polypropylene fibers; Before placing the non-woven fabric in the reaction solution, it also includes pre-treatment of the non-woven fabric. The pre-treatment specifically includes: placing the non-woven fabric in a sodium carbonate aqueous solution with a mass concentration of 2 - 5% and ultrasonicating for 20 - 40 min, and then placing the non-woven fabric in water and ultrasonicating for 20 - 40 min; After mixing molybdenum disulfide and polydimethylsiloxane, add a curing agent, mix evenly, and coat it on the conductive fabric; The mass ratio of the molybdenum disulfide, polydimethylsiloxane, and curing agent is (0.04 - 0.05):(0.5 - 0.6):(0.05 - 0.06).

[0013] In a second aspect, the present invention also provides a MoS₂ conductive fabric material prepared by using the above preparation method.

[0014] Thirdly, the present invention also provides a MoS2 conductive fabric material prepared by the described preparation method or the application of the described MoS2 conductive fabric material in seawater desalination and solar desalination.

[0015] The MoS2 conductive fabric material of the present invention, its preparation method and application have the following beneficial effects on the prior art: 1. The preparation method of the MoS2 conductive fabric material of the present invention deposits polypyrrole on the surface of non-woven fabric by a simple immersion polymerization method, and then coats a mixture of molybdenum disulfide and polydimethylsiloxane evenly, realizing the integrated combination of the photothermal layer and the electrothermal layer. The surface temperature and evaporation rate can be dynamically adjusted according to different illumination conditions. In addition, the hydrophobic treatment on the surface of the evaporator can effectively prevent salt crystallization, improve the operation stability and service life of the system, and thus realize the application of all-weather seawater desalination at low cost and on a large scale; 2. The MoS2 conductive fabric material prepared by the present invention has good photothermal and electrothermal properties. Under 1 sun illumination (1.0 kW m -2 ), when evaporating a 3.5 wt% NaCl solution, the mass loss of pure water in 1 h is 0.20 kg m -2 , while the mass loss of water of the MoS2 conductive fabric material prepared by the present invention is 1.52 kg m -2 . This shows that the MoS2 conductive fabric material evaporator for all-weather photothermal conversion has a higher evaporation rate; under no sun illumination conditions (0 kW m -2 ), when the input voltage is 5 V, the evaporation rate of a 3.5 wt% NaCl solution reaches 1.07 kg m -2 h -1 . It proves that the material has good photothermal conversion performance and electrothermal conversion performance. By hydrophobic treatment, the water contact angle on the material surface reaches 112.76°, which can significantly improve the performance and stability of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a physical picture of the cut non-woven fabric in Example 1; Figure 2 It is a physical picture of the prepared conductive fabric in Example 1; Figure 3The MoS2 conductive fabric material prepared in Example 1; Figure 4 The water contact angle diagram of the MoS2 conductive fabric material prepared in Example 1; Figure 5 The SEM diagram of the surface of the conductive fabric material prepared in Example 1.

[0018] Figure 6 The SEM diagram of the surface of the MoS2 conductive fabric material prepared in Example 1; Figure 7 The infrared spectrum diagrams of non-woven fabric, polypyrrole, conductive fabric, and MoS2 conductive fabric material in Example 1; Figure 8 The XRD diagram of the MoS2 nanomaterial synthesized by hydrothermal method in step S6 of Example 1; Figure 9 The schematic diagram of the mass loss test of different materials under 1 sun intensity and a brine concentration of 3.5 wt%; Figure 10 The mass loss curves of different materials in Example 1 under 1 sun intensity and a brine concentration of 3.5 wt%; Figure 11 The evaporation rate curve of the MoS2 conductive fabric material prepared in Example 1 without sunlight irradiation and only a certain voltage input; Figure 12 The curve of the change in the surface temperature of the evaporator of the MoS2 conductive fabric material prepared in Example 1 without sunlight irradiation and only a certain voltage input. Detailed implementation manners

[0019] Next, in combination with the implementation manners of the present invention, the technical solutions in the implementation manners of the present invention will be clearly and completely described. Obviously, the described implementation manners are only a part of the implementation manners of the present invention, rather than all of the implementation manners. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments. Additionally, in the description of this application, the term "comprising" means "including but not limited to". The various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity and should not be construed as a rigid limitation on the scope of the present invention; therefore, it should be considered that the described range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and individual numbers within the range, such as 1, 2, 3, 4, 5, and 6, which applies regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0021] This application provides a method for preparing a MoS₂ conductive fabric material, comprising the following steps: Deposit polypyrrole on the non-woven fabric to obtain a conductive fabric; Mix molybdenum disulfide and polydimethylsiloxane evenly and then coat them on the conductive fabric to obtain the MoS₂ conductive fabric material.

[0022] In the method for preparing the MoS₂ conductive fabric material of the present invention, by depositing polypyrrole on the non-woven fabric and then hydrophobically coating molybdenum disulfide, compared with traditional solar seawater desalination evaporators, the present invention combines the photothermal layer and the electrothermal layer integrally, can dynamically adjust the surface temperature and evaporation rate according to different lighting conditions, and successfully solves the problem of evaporation interruption caused by sunshine duration, seasonal changes, and weather conditions. In addition, the hydrophobic treatment on the surface of the non-woven fabric can effectively prevent salt crystallization and improve the operation stability and service life of the system.

[0023] In some embodiments, the preparation method of the conductive fabric specifically comprises the following steps: Add an oxidant to water to obtain a reaction solution; Place the non-woven fabric in the reaction solution and let it stand at 3 - 5 °C for 1 - 2 h, then add pyrrole and anionic dopant, cationic dopant, and let it stand at 3 - 5 °C for 5 - 6 h to obtain the conductive fabric.

[0024] In some embodiments, the oxidant is ferric chloride hexahydrate, the anionic dopant is sodium dodecylbenzenesulfonate, and the cationic dopant is cetyltrimethylammonium bromide.

[0025] In some embodiments, the preparation method of molybdenum disulfide comprises the following steps: Add a sulfur source and a molybdenum source to water, stir, and then carry out a hydrothermal reaction at 200 - 220 °C for 22 - 26 h, and freeze-dry to obtain molybdenum disulfide.

[0026] In some embodiments, the sulfur source is thiourea and the molybdenum source is ammonium molybdate tetrahydrate.

[0027] In some embodiments, in the step of adding an oxidizing agent to water to obtain a reaction solution, the mass ratio of the oxidizing agent to water is (2 - 3):(60 - 70); The mass ratio of pyrrole, anionic dopant, and cationic dopant is (0.3 - 0.4):(0.01 - 0.02):(0.03 - 0.04); The mass ratio of the oxidizing agent to the anionic dopant is (2 - 3):(0.01 - 0.02).

[0028] In some embodiments, in the step of adding the sulfur source and the molybdenum source to water, the mass ratio of the sulfur source, the molybdenum source, and water is (0.5 - 1):(1 - 2):(60 - 70).

[0029] In some embodiments, the non - woven fabric is made of a blend of cotton and polypropylene fibers. Specifically, the mass ratio of cotton to polypropylene fibers is 7:3, and the non - woven fabric is rectangular.

[0030] In some embodiments, before placing the non - woven fabric in the reaction solution, it also includes pre - treatment. The pre - treatment specifically includes: sequentially placing the non - woven fabric substrate in an aqueous sodium carbonate solution and water for ultrasonic treatment; performing ultrasonic cleaning on the non - woven fabric to remove oils and other impurities on the non - woven fabric substrate.

[0031] In some embodiments, the pre - treatment specifically includes: placing the non - woven fabric in an aqueous sodium carbonate solution with a mass concentration of 2 - 5% for ultrasonic treatment for 20 - 40 min, and then placing the non - woven fabric in water for ultrasonic treatment for 20 - 40 min.

[0032] After mixing molybdenum disulfide and polydimethylsiloxane, a curing agent is added, and after mixing evenly, it is coated on the conductive fabric; The mass ratio of molybdenum disulfide, polydimethylsiloxane, and the curing agent is (0.04 - 0.05):(0.5 - 0.6):(0.05 - 0.06).

[0033] Specifically, the curing agent includes a mixture of siloxane, organosilicon, and dimethylamine. Specifically, the siloxane is polydimethylsiloxane (PDMS), and the organosilicon is methyltriethoxysilane (MTES); the mass ratio of siloxane, organosilicon, and dimethylamine is (1 - 2):(1 - 2):(1 - 2).

[0034] By depositing polypyrrole on a non-woven fabric substrate and then hydrophobically coating molybdenum disulfide, compared with traditional solar seawater desalination evaporators, the present invention combines the photothermal layer and the electrothermal layer integrally, and can dynamically adjust the surface temperature and evaporation rate according to different illumination conditions, successfully solving the problem of evaporation interruption caused by sunshine duration, seasonal changes and weather conditions. In addition, the hydrophobic treatment on the evaporator surface can effectively prevent salt crystallization and improve the operation stability and service life of the system. The MoS2 conductive fabric material prepared by the present invention has good photothermal and electrothermal properties. Under 1 sun illumination (1.0 kW m -2 ), for the evaporation of 3.5 wt% NaCl solution, the mass loss of pure water in 1 h is 0.20 kg m -2 , while the mass loss of water of the MoS2 conductive fabric material prepared by the present invention is 1.52 kg m -2 . Under the condition of no sun illumination (0 kW m -2 ), when the input voltage is 5 V, the evaporation rate of 3.5 wt% NaCl solution reaches 1.07 kg m -2 h -1 . It proves that the evaporator has good photothermal conversion performance and electrothermal conversion performance. By hydrophobic treatment, the water contact angle on the evaporator surface reaches 112.76°, which can significantly improve the performance and stability of the evaporator.

[0035] Based on the same inventive concept, the present invention also provides a MoS2 conductive fabric material prepared by the above preparation method.

[0036] Based on the same inventive concept, the present invention also provides an application of the MoS2 conductive fabric material prepared by the above preparation method or the above MoS2 conductive fabric material in seawater desalination, solar desalination, and high-salt wastewater treatment.

[0037] The following further illustrates the MoS2 conductive fabric material, its preparation method and application of the present application with specific examples. This part further illustrates the content of the present invention in combination with specific examples, but should not be construed as a limitation of the present invention. Unless otherwise specified, the technical means adopted in the examples are conventional means well known to those skilled in the art. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0038] The non-woven fabric used in the following examples and comparative examples is obtained by blending cotton and polypropylene fibers, provided by Kunshan Yichen Clean Materials Co., Ltd., and the mass ratio of cotton to polypropylene fibers is 7:3.

[0039] Example 1 The present application example provides a preparation method of a MoS2 conductive fabric material, including the following steps: S1. Cut the non-woven fabric into rectangles with a size of 2 cm × 3 cm (i.e., a length of 3 cm and a width of 2 cm), as shown in Figure 1 ; S2. Immerse the cut non-woven fabric in an aqueous sodium carbonate solution with a mass concentration of 3% and ultrasonicate for 30 min, then immerse the non-woven fabric in water and ultrasonicate for 30 min; S3. Weigh 2.5 g of ferric chloride hexahydrate and add it to 60 g of water. After mixing, stir to obtain a reaction solution; S4. Vertically immerse the treated non-woven fabric in the reaction solution and soak it at 5 °C for 1 h; S5. Weigh 0.016 g of sodium dodecylbenzenesulfonate and 0.033 g of cetyltrimethylammonium bromide, add them to the reaction solution and stir evenly. Then add 400 μL of pyrrole (0.3868 g), stir evenly and let it stand at 5 °C for 5 h for polymerization reaction; Take out the reacted non-woven fabric, wash it and place it in an oven at 60 °C for drying to obtain a conductive fabric; S6. Weigh 0.706 g of ammonium molybdate tetrahydrate and 1.22 g of thiourea, add 60 g of water and mix. Then place it in a high-temperature oven at 220 °C and keep it warm for 24 h for hydrothermal reaction; Take out the reacted precipitate, wash it and perform vacuum freeze-drying to obtain molybdenum disulfide powder; S7. Mix 40 mg of molybdenum disulfide powder with 0.5 g of polydimethylsiloxane and 0.05 g of curing agent evenly, then coat it on the conductive fabric and place it in an oven at 80 °C for drying for 1 h to obtain MoS2 conductive fabric material; The curing agent includes a mixture of siloxane, organosilicon and dimethylamine. Specifically, the siloxane is polydimethylsiloxane (PDMS), and the organosilicon is methyltriethoxysilane (MTES); The mass ratio of siloxane, organosilicon and dimethylamine is 1:1:1.

[0040] Figure 1 is a physical picture of the cut non-woven fabric in Example 1.

[0041] Figure 2 is a physical picture of the conductive fabric prepared in Example 1.

[0042] Figure 3 is the MoS2 conductive fabric material prepared in Example 1.

[0043] Figure 4 is the water contact angle diagram of the MoS2 conductive fabric material prepared in Example 1; It can be seen from Figure 4 that the water contact angle of the MoS2 conductive fabric material is 112.76°, proving that the surface of the material is hydrophobic.

[0044] Figure 5SEM image of the surface of the conductive fabric material prepared in Example 1. From the morphology of the material, it can be found that all the gaps between the fibers and the fibers are uniformly loaded with polypyrrole. Small lumps and particles can be clearly observed on the fiber surface, which proves that the polymerization reaction is very successful.

[0045] Figure 6 SEM image of the surface of the MoS2 conductive fabric material prepared in Example 1. From the morphology of the material, it can be found that the fabric surface is uniformly covered with flaky MoS2, and the treatment with polydimethylsiloxane makes the surface hydrophobic, improving the stability and durability of the system.

[0046] Figure 7 Infrared spectrum of each component of the sample in Example 1. Figure 7 Among them, CF represents the non-woven fabric in Example 1, PPy represents polypyrrole, PPy@CF represents the conductive fabric in step S5 of Example 1, MoS2-PPy@CF represents the MoS2 conductive fabric material prepared in Example 1, and PDMS represents polydimethylsiloxane.

[0047] From Figure 7 it can be seen that the main components of the non-woven fabric are polypropylene and cotton fibers. In the infrared spectrum, the broad vibration peak at 3329 cm⁻¹ belongs to the stretching vibration of hydroxyl (-OH), which is due to the large amount of hydroxyl (-OH) in the cotton cellulose of the non-woven fabric. The obvious vibration peaks at 2977 cm⁻¹ and 2901 cm⁻¹ correspond to the C-H stretching vibrations of methyl (-CH3) and methylene (-CH2) in polypropylene respectively, while the vibration peak at 1048 cm⁻¹ belongs to the stretching vibration of C-O. After the polymerization reaction, the infrared absorption peaks shift or weaken, which is attributed to the interaction between polypyrrole and the cotton fibers of the non-woven fabric, indicating that polypyrrole has been successfully loaded onto the non-woven fabric. After further coating with molybdenum disulfide, the infrared absorption peaks of MoS2-PPy@CF are basically the same as those of PDMS. Among them, the absorption peak at 2977 cm⁻¹ corresponds to the C-H stretching vibration of methyl (-CH3), the absorption peak at 1255 cm⁻¹ is attributed to the bending vibration of silicon methyl (Si-CH3), the absorption peak at 1011 cm⁻¹ is the stretching vibration of the silicon-oxygen-silicon (Si-O-Si) skeleton, and the absorption peak at 788 cm⁻¹ belongs to the stretching vibration of Si-O. These results indicate that PDMS does not participate in chemical reactions in the system and only acts as a binder and a hydrophobic agent.

[0048] Figure 8 XRD pattern of the MoS2 nanomaterial prepared by hydrothermal synthesis in step S6 of Example 1 From Figure 8It can be seen that obvious diffraction peaks are observed at 2θ angles of 14.2°, 33.5°, and 58.9°, which are related to the (002), (100), and (110) crystal planes of MoS2 respectively. The obtained data is consistent with the information in the standard powder diffraction card (PDF#97 - 002 - 4000) of synthetic MoS2, and the peak positions of (002) basically coincide. This indicates that the hydrothermally synthesized MoS2 has a high purity.

[0049] Figure 10 It is the mass loss curve of different materials in Example 1 under 1 sun intensity with a brine concentration of 3.5 wt% (i.e., an aqueous NaCl solution with a mass concentration of 3.5%). Figure 10 The evaporation of pure water represents the change in the mass loss of water evaporated naturally without using a photothermal material in a 3.5 wt% brine; PPy@CF represents the conductive fabric in step S5 of Example 1; MoS2 - PPy@CF represents the MoS2 conductive fabric material prepared in Example 1. The specific test method refers to Figure 9 As shown, add water into the container and place a polystyrene foam (cylindrical shape with a diameter of 4.3 cm and a thickness of 1 cm) above the water. At the same time, open a limiting hole (2 cm × 2 cm, with both length and width being 2 cm) on the foam, embed different materials in the limiting hole, and make the non - woven fabric at the bottom of the material contact with the water for performance testing; the mass loss of water (i.e., Figure 10 the mass change in

[0050] is calculated by the formula:

[0051] In the formula, m is the mass loss of water, m1 is the mass of seawater before evaporation, m2 is the mass of seawater after evaporation, and S is the evaporation area.

[0051] From Figure 10 it can be seen that the mass loss of pure water in 1 h is 0.20 kg m -2 ; PPy@CF represents the conductive fabric in step S5 of Example 1, and the mass loss of water is 1.45 kg m -2 ; MoS2 - PPy@CF represents the MoS2 conductive fabric material prepared in Example 1, and the mass loss of water is 1.52 kg m -2 , which indicates that the MoS2 conductive fabric material evaporator for all - weather photothermal conversion has a higher evaporation rate.

[0052] Furthermore, Figure 11 It is the evaporation rate curve of the MoS2 conductive fabric material prepared in Example 1 under no sunlight illumination with only a certain voltage input. Under the condition of no light illumination, as the voltage increases, the evaporation rate continuously accelerates. When the input voltage is 5 V, the evaporation rate is 1.07 kg m-2 h -1 , although the evaporation rate under this condition is slightly lower than that under light illumination, water evaporation under dark conditions is achieved, solving the problem that traditional solar desalination works during the day and shuts down at night.

[0053] Among them, the evaporation rate calculation formula is as follows:

[0054] In the formula, S is the projected area of the material under simulated sunlight (m 2 ), t is the illumination time (s), m is the mass of water evaporated (kg), and the evaporation rate is the value after subtracting the dark evaporation from the mass change.

[0055] Figure 12 It is the curve of the surface temperature change of the MoS2 conductive fabric material prepared in Example 1 under no sunlight illumination and only with a certain voltage input. The temperature is measured by a thermocouple. As the voltage increases, the surface temperature of the material continuously rises. When the input voltage is 5V, the surface temperature of the material is about 46.1°C. This indicates that the surface temperature of the material can be adjusted by changing the input voltage.

[0056] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation method of a MoS2 conductive fabric material, characterized in that, It includes the following steps: Deposit polypyrrole on the non-woven fabric to obtain a conductive fabric; Mix molybdenum disulfide and polydimethylsiloxane uniformly and then coat them on the conductive fabric to obtain the MoS2 conductive fabric material.

2. The preparation method of the MoS2 conductive fabric material according to claim 1, characterized in that, The preparation method of the conductive fabric specifically includes the following steps: Add an oxidant to water to obtain a reaction solution; Place the non-woven fabric in the reaction solution and let it stand at 3 - 5 °C for 1 - 2 h, then add pyrrole, an anion dopant, and a cation dopant, and let it stand at 3 - 5 °C for 5 - 6 h to obtain the conductive fabric.

3. The preparation method of the MoS2 conductive fabric material according to claim 2, characterized in that, The oxidant is ferric chloride, the anion dopant is sodium dodecylbenzenesulfonate, and the cation dopant is cetyltrimethylammonium bromide.

4. The preparation method of the MoS2 conductive fabric material according to claim 1, characterized in that, The preparation method of the molybdenum disulfide includes the following steps: Add a sulfur source and a molybdenum source to water, stir, and then carry out a hydrothermal reaction at 200 - 220 °C for 22 - 26 h, and freeze-dry to obtain molybdenum disulfide.

5. The preparation method of the MoS2 conductive fabric material according to claim 4, wherein, The sulfur source is thiourea, and the molybdenum source is ammonium molybdate tetrahydrate.

6. The preparation method of the MoS2 conductive fabric material according to claim 3, characterized in that, In the step of adding the oxidant to water to obtain the reaction solution, the mass ratio of the oxidant to water is (2 - 3):(60 - 70); The mass ratio of pyrrole, the anion dopant, and the cation dopant is (0.3 - 0.4):(0.01 - 0.02):(0.03 - 0.04); The mass ratio of the oxidant to the anion dopant is (2 - 3):(0.01 - 0.02).

7. The preparation method of the MoS2 conductive fabric material according to claim 4, characterized in that, In the step of adding the sulfur source and the molybdenum source to water, the mass ratio of the sulfur source, the molybdenum source, and water is (0.5 - 1):(1 - 2):(60 - 70).

8. The preparation method of the MoS2 conductive fabric material according to claim 2, characterized in that, The non-woven fabric is made of a blend of cotton and polypropylene fibers; Before placing the non-woven fabric in the reaction solution, it also includes pre-treating the non-woven fabric. The pre-treatment specifically includes: placing the non-woven fabric in a sodium carbonate aqueous solution with a mass concentration of 2 - 5% and ultrasonicating for 20 - 40 min, and then placing the non-woven fabric in water and ultrasonicating for 20 - 40 min; After mixing molybdenum disulfide and polydimethylsiloxane, add a curing agent, mix uniformly, and then coat it on the conductive fabric; The mass ratio of molybdenum disulfide, polydimethylsiloxane, and the curing agent is (0.04 - 0.05):(0.5 - 0.6):(0.05 - 0.06).

9. A MoS2 conductive fabric material, characterized in that, Prepared by using the preparation method described in any one of claims 1 - 8.

10. Application of the MoS2 conductive fabric material prepared by the preparation method described in any one of claims 1 - 8 or the MoS2 conductive fabric material described in claim 9 in seawater desalination and solar desalination.

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