CN112834088B - Bionic MXene aerogel-based sensing material and preparation method and application thereof - Google Patents
Bionic MXene aerogel-based sensing material and preparation method and application thereof Download PDFInfo
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- CN112834088B CN112834088B CN202110079706.1A CN202110079706A CN112834088B CN 112834088 B CN112834088 B CN 112834088B CN 202110079706 A CN202110079706 A CN 202110079706A CN 112834088 B CN112834088 B CN 112834088B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/06—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices
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Abstract
The invention relates to a bionic MXene aerogel-based sensing material and a preparation method and application thereof, and the specific steps comprise: (1) organosiloxane with bisMixing vitamin-transition metal carbide MXene, generating polysiloxane through hydrolysis reaction, and adsorbing the polysiloxane on MXene sheets to form stable uniform dispersion liquid; (2) preparing porous aerogel by freeze drying, wherein the microporous wall is a multilayer MXene structure with polysiloxane intercalation; (3) and (3) heating for reaction, forming chemical crosslinking between polysiloxane and MXene, and stabilizing the nanopore structure in the pore wall to obtain the bionic aerogel. When the prepared pressure sensing material is stressed, the nano-pore channels in the layered pore wall are preferentially contracted or expanded to generate resistance change; the flexible pressure sensor based on the bionic MXene aerogel can realize detection of millipascal pressure and 50dB sound pressure, and the sensitivity reaches 1900kPa‑1Above, the reaction time is in the order of milliseconds.
Description
Technical Field
The invention relates to a pressure sensing material and a preparation method of a pressure sensor, in particular to a preparation method of a bionic aerogel with a spider-organ-like sensing organ structure and a preparation method of an ultra-sensitive pressure sensor.
Background
In future sensor technology application fields, it is a necessary trend and a great challenge to accurately sense a tiny mechanical force signal such as a human vein signal or a signal transmitted by sound wave in air. In nature, spiders can sense and detect minute mechanical forces and nano-scale strain in the surrounding environment using one of the most sensitive force sensors in the world, the exoskeleton sensor located under the patella of the spider leg. On the basis, an ultrasensitive piezoresistive pressure sensor based on the bionic piezoresistive aerogel is researched, and the astonishing delicate pressure sensing characteristics of the ultrasensitive piezoresistive pressure sensor are displayed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an ultra-high sensitive ultra-low pressure sensor based on bionic MXene aerogel.
The technical scheme of the invention is as follows:
a sensing material based on bionic MXene aerogel is prepared by assembling and chemically crosslinking two-dimensional transition metal carbide MXene and organic siloxane; polymerizing siloxane into polysiloxane and inserting the polysiloxane into the MXene sheet layer to form a multistage layered pore wall structure of the spider organ-like sensing organ; when the bionic aerogel is stressed, the nanometer pore channels in the pore walls can shrink or expand, and resistance change is generated.
Furthermore, the obtained bionic MXene aerogel sensing material has a honeycomb shapeThe thickness of the microporous wall is 5-100nm, the interlayer spacing of multilevel layered MXene in the pore wall is 1.5-3nm, and the length of the pore wall is 50-1500 mu m; the density of the aerogel is 0.5-20mg/cm3. When the bionic MXene aerogel is stimulated by external force, the nanometer pore channels in the multilevel layered pore wall structure can be contracted or expanded preferentially, so that the resistance is changed. The multistage layered pore wall structure of the spider organ-like sensing organ is formed by inserting linear or network polysiloxane into MXene layers and chemically crosslinking Ti-O-Si bonds with MXene to assemble a stable multistage layered pore wall structure with parallel nano-pores.
A preparation method of a bionic MXene aerogel-based sensing material comprises the following steps:
(1) adding an organic precursor siloxane monomer of polysiloxane into MXene aqueous dispersion, carrying out hydrothermal reaction for 2-10 hours at 100-200 ℃, hydrolyzing and polymerizing the siloxane monomer into polysiloxane, and adsorbing the polysiloxane on an MXene sheet layer to form stable uniform dispersion;
(2) preparing an aerogel porous structure by freeze drying to form a multilevel layered pore wall structure with polysiloxane inserted between MXene sheets;
(3) under the protection of inert gas, heating and reacting the MXene aerogel at 100-200 ℃ for 1-5 hours, and forming Ti-O-Si bonds between the polysiloxane polymer and MXene sheets through a silanization reaction to stabilize the MXene interlayer nanometer pore channels to prepare the bionic MXene aerogel.
Further, the addition amount of the organic siloxane monomer is 2-20 wt% of MXene;
further, the concentration of the MXene aqueous dispersion liquid is 5-20 mg/ml;
furthermore, the uniform dispersion liquid of MXene and mailing siloxane is stored in the air for more than 6 months, and no precipitation or MXene oxidative degradation phenomenon occurs.
Further, MXene is single-layer or few-layer titanium carbide Ti3C2TxThe nano-sheet consists of transition metal, titanium or carbon and surface active end groups, the surface of the nano-sheet contains a large number of active end groups including hydroxyl and the like, and the area of the single-layer or few-layer nano-sheet is 0.1um2To 5um2And the thickness is 2-5nm, and the film is prepared by adopting a hydrogen fluoride etching method.
Further, the organosiloxane is 3-triethoxysilyl-1-propylamine, gamma-glycidoxypropyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, gamma-aminopropylmethyldiethoxysilane, gamma-aminopropylmethyldimethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, diethylenetriaminopropylmethyldimethoxysilane, diethylenetriaminopropyltrimethoxysilane, gamma-aminopropylbis (trimethylsiloxy) methylsilane, gamma-glycidoxypropyltrimethoxysilane, gamma-glycidyloxy-methyldimethoxysilane, gamma-glycidyloxy-dimethyltrimethoxysilane, gamma-glycidyloxy-dimethyldimethoxysilane, gamma-glycidyloxy-dimethyltrimethoxysilane, gamma-dimethylmethoxysilane, gamma-glycidyloxy-dimethyltrimethoxysilane, gamma-dimethylmethoxysilane, gamma-N-dimethylmethoxysilane, N-p-N-, N-phenyl-gamma-aminopropyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, gamma-methacryloxypropyltrimethoxysilane, octyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-chloropropyltrimethoxysilane, gamma-chloropropylmethyldimethoxysilane, gamma-glycidoxypropylmethyldiethoxysilane, gamma-glycidoxypropyltriethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 1, 2-bis (triethoxysilyl) ethane, methyltrimethoxysilane, gamma-thiocyanopropyltriethoxysilane, gamma-piperazinylpropylmethyldimethoxysilane, gamma-isocyanatopropyltriethoxysilane, gamma-mercaptopropyltriethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-mercaptopropylmethyldimethoxysilane, gamma-glycidyloxypropyltrimethoxysilane, gamma-butyltrimethoxysilane, or, One or more of gamma-isocyanate propyl trimethoxy silane, 3- [ (2,3) -glycidoxy ] propyl methyl dimethoxy silane, 3- (2, 3-glycidoxy) propyl trimethoxy silane and tetraethyl silicate.
Furthermore, the ultra-high sensitive ultra-low pressure sensor is prepared based on the bionic MXene aerogel sensing material, and structurally comprises a flexible substrate, interdigital electrodes and a pressure sensing material which are assembled from bottom to top; the flexible substrate is one of polyethylene terephthalate, polyimide, polyurethane, polyacrylate, polyethylene naphthalate and polydimethoxysiloxane, and the pressure sensing material is the bionic MXene aerogel.
The invention has the beneficial effects that:
the obtained aerogel and the prepared sensor have a porous structure simulating the inspiration of a sense organ of a spider, and when the pressure sensing material is stressed, the nanometer pore channels in the layered pore walls are preferentially shrunk or expanded to generate resistance change.
The prepared flexible pressure sensor shows sensing properties of ultra-high sensitivity, ultra-low pressure detection limit and ultra-high sensing durability. Can realize the inspection of millipascal pressure and 50dB sound pressure, and the sensitivity reaches 1900kPa-1Above, the reaction time is in the order of milliseconds.
The prepared flexible pressure sensor can accurately monitor ultra-weak signals generated by deep internal jugular vein pulses of a human body, detect dynamic impact of mosquitoes during landing and flying away, and measure static pressure of one hair.
The prepared flexible pressure sensor can be directly used for non-invasive real-time monitoring of human venous pulsation.
Drawings
FIG. 1 is a schematic structural diagram of a biomimetic aerogel sensing material according to the present invention.
Fig. 2 is an enlarged schematic view of an accordion-like mechanical sensing organ of a spider.
Detailed Description
The present invention will be further described with reference to the following specific examples, which are not intended to limit the scope of the present invention.
The materials, reagents and the like used specifically and not shown in the examples are commercially available or may be obtained by a method known to those skilled in the art without specific description. The specific experimental procedures and operating conditions involved are generally in accordance with conventional process conditions and conditions as described in the manual or as recommended by the manufacturer.
Example 1:
(1) 10mg of MXene with the size of about 1-2 μm in a slice layer prepared by a chemical method (MILD method) is weighed and placed in a reagent bottle, 1mL of deionized water is added, and ultrasonic treatment (with the power of 500W) is carried out for 2 minutes to obtain 10mg/mL of MXene dispersion liquid.
(2) 2mg of trimethoxy silane coupling agent (KH560) was added to the MXene solution, and the mixture was shaken for 3 minutes.
(3) Pouring the mixed solution of MXene and trimethoxy silane coupling agent obtained in the step (2) into a hydrothermal reaction kettle. Putting the mixture into an oven to carry out hydrothermal reaction for two hours at the temperature of 100 ℃.
(4) And (4) cooling the solution obtained in the step (3) and then placing the cooled solution into a reagent bottle. And placing the reagent bottle into a refrigerator, setting the freezing temperature to be-5 ℃, and waiting for 6 hours until the solution is completely frozen.
(5) And (5) placing the solid obtained in the step (4) in a freeze dryer, and waiting for 2-3 days until the water is completely volatilized. The resulting porous material was taken out of the reaction tube.
(6) And (4) placing the porous material obtained in the step (5) into a tube furnace, and roasting at 200 ℃ for 3 hours. And cooling and taking out to obtain the final sensing material.
Example 2:
(1) 20mg of MXene with the size of about 1-2 μm in a slice layer prepared by a chemical method (MILD method) is weighed and placed in a reagent bottle, 1mL of deionized water is added, and the mixture is subjected to ultrasonic treatment (the power is 500W) for 2 minutes to obtain 20mg/mL of MXene dispersion liquid.
(2) To the MXene solution was added 1mg of dimethoxysilane coupling agent and shaken for 3 minutes.
(3) Pouring the mixed solution of MXene and dimethoxy silane coupling agent obtained in the step (2) into a hydrothermal reaction kettle. Putting the mixture into an oven to carry out hydrothermal reaction for one hour at the temperature of 180 ℃.
(4) And (4) cooling the solution obtained in the step (3) and then placing the cooled solution into a reagent bottle. And the reagent bottle was placed inside liquid nitrogen, waiting 3 minutes for the solution to freeze completely.
(5) And (5) placing the solid obtained in the step (4) in a freeze dryer, and waiting for 2-3 days until the water is completely volatilized. The resulting porous material was taken out of the reaction tube.
(6) And (4) placing the porous material obtained in the step (5) into a tubular furnace, and roasting at 150 ℃ for two hours. And cooling and taking out to obtain the final sensing material.
The bionic MXene aerogel sensing material is prepared by assembling and chemically crosslinking two-dimensional transition metal carbide MXene and organic siloxane; polymerizing siloxane into polysiloxane and inserting the polysiloxane into the MXene sheet layer to form a multilevel lamellar hole wall structure of the araneiderian organ-like sensing organ; when the bionic aerogel is stressed, the nanometer pore channels in the pore walls can shrink or expand, and resistance change is generated.
FIG. 1 shows a structural schematic diagram of the bionic aerogel sensing material, and as can be seen from the figure, the bionic MXene aerogel sensing material has a honeycomb-shaped porous structure, the thickness of a microporous wall is 5-100nm, the interlayer spacing of multilevel layered MXene in a pore wall is 1.5-3nm, and the length of the pore wall is 50-1500 mu m; the density of the aerogel is 0.5-20mg/cm3. The multilevel lamellar hole wall structure of the organ-like spider sensor organ is formed by inserting linear or network polysiloxane into MXene layers and forming a Ti-O-Si bond to carry out chemical crosslinking with MXene so as to assemble a stable multilevel lamellar hole wall structure with parallel nano-pore channels. The organ-like mechanical sensing organ of the spider is characterized in that when the bionic MXene aerogel is stimulated by external force, nano-pore channels in the multi-level layered pore wall structure can be contracted or expanded preferentially to promote resistance change.
Based on the above description, the bionic MXene aerogel-based sensing material can be used for preparing an ultra-high sensitive ultra-low pressure sensor, the prepared flexible pressure sensor can realize detection of millipascal pressure and detection of sound wave intensity of more than 50dB, and the sensitivity can reach 1900kPa within an ultra-low pressure range-1Above, the reaction time can be in the order of milliseconds. The sensor can be directly used for monitoring the non-invasive human vein pulsation, including the pulsation of the internal jugular vein, the external jugular vein, the anterior jugular vein, the facial vein, the superficial temporal vein, the cephalic vein, the basilic vein, the median temporal vein, the small saphenous vein and the large saphenous vein in real time.
By way of further illustration, the present invention is not limited to the above examples, which are only used to make the technical solution of the present invention comprehensible to those skilled in the art, wherein MXene is a monolayer or an oligolayer of titanium carbide Ti3C2TxNanosheets consisting of a transition metal, titanium or carbon and a surface active end groupThe surface of the nano-sheet contains a large number of active end groups including hydroxyl and the like, and the area of the single-layer or few-layer nano-sheet is 0.1um2To 5um2And the thickness is 2-5nm, and the film is prepared by adopting a hydrogen fluoride etching method.
The organosiloxane of the present invention is not limited by the examples, and may be selected from 3-triethoxysilyl-1-propylamine, gamma-glycidoxypropyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, gamma-aminopropylmethyldiethoxysilane, gamma-aminopropylmethyldimethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, diethylenetriaminopropylmethyldimethoxysilane, diethylenetriaminopropyltrimethoxysilane, di-ethylmethyldimethoxysilane, di-ethyltrimethoxysilane, di-N-ethylmethyldimethoxysilane, di-N-aminopropyl-methyldimethoxysilane, di-N-aminopropyl-methyldimethoxysilane, N-t-propyl-N-t-ethyltrimethoxysilane, N-, Gamma-aminopropylbis (trimethylsiloxy) methylsilane, N-phenyl-gamma-aminopropyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, gamma-methacryloxypropyltrimethoxysilane, octyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-chloropropyltrimethoxysilane, gamma-chloropropylmethyldimethoxysilane, gamma-glycidoxypropylmethyldiethoxysilane, gamma-glycidoxypropyltriethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 1, 2-bis (triethoxysilyl) ethane, methyltrimethoxysilane, gamma-thiocyanopropyltriethoxysilane, gamma-piperazinylpropylmethyldimethoxysilane, N-phenyl-gamma-aminopropyltrimethoxysilane, N-phenyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, gamma-methacryloxypropyltrimethoxysilane, octyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-chloropropyltrimethoxysilane, gamma-methyldimethoxysilane, gamma-glycidyloxypropyltrimethoxysilane, gamma-glycidyloxyethyltrimethoxysilane, gamma-glycidyloxypropyltrimethoxysilane, gamma-dimethyldimethoxysilane, gamma-glycidyloxysilane, gamma-glycidyloxypropyltrimethoxysilane, gamma-glycidyloxyethyltrimethoxysilane, gamma-tert-butyltrimethoxysilane, beta-tert-butyltrimethoxysilane, beta-butyltrimethoxysilane, N-butyltrimethoxysilane, tert-butyltrimethoxysilane, N-butyllithium, One or more of gamma-isocyanate propyl triethoxysilane, gamma-isocyanate propyl trimethoxysilane, 3- [ (2,3) -glycidoxy ] propyl methyldimethoxysilane, 3- (2, 3-glycidoxy) propyl trimethoxysilane and tetraethyl silicate.
All the above raw material selections can achieve the purpose of the present invention and achieve the technical effects of the present invention, and the process conditions are not limited to the embodiments, and the modifications and changes should fall within the protection scope of the present invention as long as they belong to the technical idea of the present invention and are obvious.
Claims (9)
1. The utility model provides a based on bionical MXene aerogel sensing material which characterized by: the bionic MXene aerogel sensing material is prepared from two-dimensional transition metal carbide MXene and organic siloxane through assembly and chemical crosslinking; polymerizing the organic siloxane into polysiloxane and inserting the polysiloxane into the MXene sheet layer to form a multilevel lamellar hole wall structure of the spider organ-like sensing organ; when the bionic aerogel is stressed, the nano-pore channels in the pore walls shrink or expand to generate resistance change;
the multistage layered pore wall structure of the spider organ-like sensing organ is formed by inserting linear or network polysiloxane into MXene layers and chemically crosslinking Ti-O-Si bonds with MXene to assemble a stable multistage layered pore wall structure with parallel nano-pores.
2. The bionic MXene aerogel-based sensing material as claimed in claim 1, wherein: the bionic MXene aerogel sensing material has a honeycomb porous structure, the thickness of a microporous wall is 5-100nm, the interlayer spacing of multi-level layered MXene in the hole wall is 1.5-3nm, and the length of the hole wall is 50-1500 mu m; the density of the aerogel is 0.5-20mg/cm3。
3. The bionic MXene aerogel-based sensing material as claimed in claim 1, wherein: when the bionic MXene aerogel is stimulated by external force, the nanometer pore channels in the multilevel layered pore wall structure can be contracted or expanded preferentially, so that the resistance is changed.
4. The preparation method of the bionic MXene aerogel-based sensing material as claimed in any one of claims 1-3, is characterized by comprising the following steps: the method comprises the following steps:
(1) adding a precursor organic siloxane of polysiloxane into MXene aqueous dispersion liquid, carrying out hydrothermal reaction for 2-10 hours at 100-200 ℃, hydrolyzing the organic siloxane, polymerizing the organic siloxane into polysiloxane, and adsorbing the polysiloxane on an MXene sheet layer to form stable uniform dispersion liquid;
(2) preparing an aerogel porous structure by freeze drying to form a multilevel layered pore wall structure with polysiloxane inserted between MXene sheets;
(3) under the protection of inert gas, heating and reacting MXene aerogel at 100-200 ℃ for 1-5 hours, and forming Ti-O-Si bonds between the polysiloxane and MXene sheet layers through a silanization reaction to stabilize MXene interlayer nanometer pore paths to prepare the bionic MXene aerogel.
5. The preparation method of the bionic MXene-based aerogel sensing material according to claim 4, wherein the preparation method comprises the following steps: in the step (1), the addition amount of the organic siloxane is 2-20 wt% of the weight of MXene; in the step (1), the concentration of the MXene aqueous dispersion liquid is 5-20 mg/ml; the uniform dispersion liquid in the step (1) is stored in the air for more than 6 months, and precipitation or MXene oxidative degradation phenomenon does not occur.
6. The preparation method of the bionic MXene-based aerogel sensing material according to claim 4, wherein the preparation method comprises the following steps: the MXene is single-layer or few-layer titanium carbide Ti3C2TxThe nano-sheet consists of transition metal, titanium or carbon and surface active end groups, the surface of the nano-sheet contains a large number of active end groups including hydroxyl, and the area of the single-layer or few-layer nano-sheet is 0.1um2To 5um2And the thickness is 2-5nm, and the film is prepared by adopting a hydrogen fluoride etching method.
7. The preparation method of the bionic MXene-based aerogel sensing material according to claim 4, wherein the preparation method comprises the following steps: the organic siloxane is 3-triethoxysilyl-1-propylamine, gamma-glycidoxypropyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, gamma-aminopropylmethyldiethoxysilane, gamma-aminopropylmethyldimethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, diethylenetriaminopropylmethyldimethoxysilane, diethylenetriaminopropyltrimethoxysilane, gamma-aminopropylbis (trimethylsiloxy) methylsilane, di (ethyloxy) methyl silane, di (ethoxy) ethyl silane, di (ethoxy) ethyl silane, di (ethoxy) ethyl acrylate, and (ethoxy) ethyl acrylate (meth) ethyl acrylate, N-phenyl-gamma-aminopropyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, gamma-methacryloxypropyltrimethoxysilane, octyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-chloropropyltrimethoxysilane, gamma-chloropropylmethyldimethoxysilane, gamma-glycidoxypropylmethyldiethoxysilane, gamma-glycidoxypropyltriethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 1, 2-bis (triethoxysilyl) ethane, methyltrimethoxysilane, gamma-thiocyanopropyltriethoxysilane, gamma-piperazinylpropylmethyldimethoxysilane, gamma-isocyanatopropyltriethoxysilane, gamma-mercaptopropyltriethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-mercaptopropylmethyldimethoxysilane, gamma-glycidyloxypropyltrimethoxysilane, gamma-butyltrimethoxysilane, or, One or more of gamma-isocyanate propyl trimethoxy silane, 3- [ (2,3) -glycidoxy ] propyl methyl dimethoxy silane, 3- (2, 3-glycidoxy) propyl trimethoxy silane and tetraethyl silicate.
8. The use of the bionic MXene aerogel-based sensing material as claimed in any one of claims 1-3, wherein: the method is used for preparing the ultra-high sensitive ultra-low pressure sensor.
9. The use of the bionic MXene-based aerogel sensing material according to claim 8, wherein: the ultra-high sensitive ultra-low pressure sensor structure comprises a flexible substrate, an interdigital electrode and a pressure sensing material which are assembled from bottom to top; the flexible substrate is one of polyethylene terephthalate, polyimide, polyurethane, polyacrylate, polyethylene naphthalate and polydimethoxysiloxane; the pressure sensing material is bionic MXene aerogel.
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