CN111321519A - Inorganic perovskite nano composite fiber membrane and application method thereof - Google Patents
Inorganic perovskite nano composite fiber membrane and application method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
Abstract
The invention adopts high-speed and high-pressure jet forming technology to prepare the CsPbX nano-fiber film with a reticular structure of fiber staggered structure3The perovskite (X is halogen element) and the nano composite material thereof are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, and the gain material is dispersed or attached on the surfaces of the fiber membrane and the composite material. The nano composite fiber membrane has the characteristics of high fluorescence, high catalytic activity and stable performance, can be used as an effective mode for storing active materials and a raw material for ink-jet printing ink, and meets the application requirements in the fields of anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical treatment, visible light wireless communication, pollutant degradation, energy conversion and the like.
Description
Technical Field
The invention belongs to the technical field of nano composite materials and application, and particularly relates to an inorganic perovskite nano composite fiber membrane with high fluorescence and high catalytic activity and an application method thereof.
Background
In recent years, fully inorganic perovskite CsPbX3The (X is halogen element) nanocrystal is widely concerned by researchers due to its unique physicochemical properties, such as high extinction coefficient, adjustable band gap width, excellent fluorescence performance, etc., and has been deeply researched and applied in the fields of solar cells, light emitting diodes, photoelectric detection, lasers, etc.
The inventor carries out a great deal of research work on the basis and application in the early stage and develops a series of CsBX in-situ growth on the surface of a nano two-dimensional material3(B is element containing +2 valence state; X is halogen element) nanocrystalline composite material (Chinese patent invention, 201810179430.2). Meanwhile, based on the research on key links in the synthesis process of the materials and key factors capable of remarkably regulating and controlling the structure and the photoelectric performance of the materials, the inventor designs a set of array type liquid phase synthesis system of the multi-dimensional nano composite material (Chinese invention patent, 201810180349.6). By processing the materials in different synthesis stages, the surface or interface characteristics of the materials are improved, and the single-phase nano material and the nano composite material thereof which meet different requirements and have small batch, multiple dimensions, high quality, good stability and excellent anisotropy can be obtained.
However, the above materials still face a series of problems in the process of industrial application, such as high toxicity of the nanostructure-like materials, CsPbX3The perovskite material contains toxic lead element, and CsPbX is caused by agglomeration and the like3The phase change of the perovskite material leads to the reduction of the chemical activity and the loss in the using process, which are very easy to cause the rapid reduction of the using performance of the material and serious safety problems. Furthermore, CsPbX3Research on new functions and new applications of perovskite materials is also imminent.
Disclosure of Invention
Based on the problems existing in the background technology, the invention aims to provide an inorganic perovskite nano composite fiber membrane with high fluorescence and high catalytic activity, and a reticular structure nano with a fiber staggered structure is prepared by adopting a high-speed and high-pressure jet forming technologyRice fibre membranes, CsPbX3The (X is halogen element) perovskite and the nano composite material thereof and other active materials with high fluorescence and high catalytic activity are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, and the gain material is dispersed or attached on the surfaces of the fiber membrane and the active materials. The prepared inorganic perovskite nano composite fiber membrane has high fluorescence characteristic and high catalytic activity, can keep long-term structure and performance stability under complex environmental conditions, and can be used as an effective mode for storing active materials and a raw material of ink-jet printing ink. The fluorescent characteristic of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical treatment, visible light wireless communication and the like, and the catalytic activity of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of pollutant degradation, energy conversion, medical protection and the like. The specific technical scheme is as follows:
a difunctional inorganic perovskite nano composite fiber membrane with high fluorescence and high catalytic activity is characterized in that a fiber interlaced-structure nano fiber membrane, CsPbX, is prepared by adopting a high-speed and high-pressure jet forming technology3Active materials with high fluorescence and high catalytic activity, such as perovskite (X is halogen element) and nano composite materials thereof, are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, and the gain materials are dispersed or attached on the surfaces of the fiber membrane and the active materials;
optionally, the inorganic perovskite nano composite fiber membrane is prepared by a high-speed and high-pressure jet forming technology, and the jet fluid comprises the following components:
optionally, the inorganic perovskite nano composite fiber membrane, CsPbX3The perovskite and the nano composite material thereof and other active materials with high fluorescence and high catalytic activity comprise CsPbX3Nanocrystalline, synthetic CsPbX of halogen anion exchange3-xX’xNanocrystalline and CsPbX in-situ growth on surface of nano two-dimensional material3One or more of the nano composite materials; the CsPbX3The perovskite and the nano composite material thereof have the characteristics of high fluorescence and high catalytic activity;
optionally, the inorganic perovskite nano composite fiber membrane, the gain material is dispersed or attached on the surfaces of the fiber membrane and the active material, and the CsPbX can be enhanced3The perovskite and the nano composite material thereof have fluorescence characteristics or catalytic activity, and the gain material comprises one or more of carbon quantum dots, graphene quantum dots, II-VI group quantum dots and III-V group quantum dots;
optionally, the group II-VI quantum dots include PbS, CdS, CdSe, ZnS, and the group III-V quantum dots include InP;
optionally, the fiber membrane of the inorganic perovskite nano composite fiber membrane is prepared by using a dissolved high molecular polymer through a high-speed and high-pressure jet molding technology, wherein the high molecular polymer is one or more of polymethyl methacrylate, polyvinylpyrrolidone, polypropylene, polytetrafluoroethylene, polyvinyl acetate, polyvinylidene fluoride and polyacrylonitrile;
optionally, in the preparation process of the inorganic perovskite nanocomposite fiber membrane, CsPbX is required to be added3The perovskite and the nano composite material thereof, the gain material and the high molecular polymer are dissolved in a solvent, wherein the solvent comprises one or more of toluene, o-xylene, m-xylene, p-xylene, n-hexane, tetradecane, ethyl acetate, methyl acetate, ethyl formate, absolute ethyl alcohol, isopropanol, ethylene glycol, dichloromethane, trichloromethane and 1, 2-dichloroethane;
optionally, the preparation process of the inorganic perovskite nano composite fiber membrane comprises the steps of preparing the nano composite fiber membrane by a high-speed and high-pressure jet forming technology, and passivating the surface defects of the nano composite fiber membrane by low-temperature heat treatment, so that the stability of the structure and the performance of the inorganic perovskite nano composite fiber membrane under the complex environmental condition is improved;
wherein, in the high-speed and high-pressure jet forming process, the adopted high pressure is 5-25 kV; the spraying speed is 0.1-10 mm/min;
in the process of passivating the nano composite fiber film by low-temperature heat treatment, the temperature is 20-300 ℃, the humidity is 20-80%, the treatment time is 1-24h, and the atmosphere is one or more of vacuum, air, argon and nitrogen;
optionally, the inorganic perovskite nano composite fiber membrane can be directly and rapidly printed and formed on the surface of a rigid, flexible and curved substrate by adopting a high-speed and high-pressure jet forming technology;
optionally, the inorganic perovskite nano composite fiber membrane has the characteristics of high fluorescence and high catalytic activity, and can be used as CsPbX3Perovskite and nano composite materials thereof and the like have high fluorescence and high catalytic activity. CsPbX3Active materials with high fluorescence and high catalytic activity, such as perovskite and nano composite materials thereof (X is halogen element), are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, so that the increase and phase change of crystal grains caused by the agglomeration of the nano materials are avoided, and the active materials can still keep good fluorescence characteristics and excellent catalytic activity for a long time under the complex environmental condition and have stable structure and performance;
optionally, the inorganic perovskite nano composite fiber membrane can be used as a raw material of ink-jet printing ink. The prepared inorganic perovskite nano composite fiber membrane can be dissolved in a solvent of ink-jet printing ink, and after the nano composite fiber membrane with proper addition amount is dissolved in the solvent, the ink meeting the requirements of ink-jet printing viscosity and surface tension can be obtained;
optionally, the inorganic perovskite nano composite fiber membrane has good fluorescence characteristics, so that the application requirements of industrial and civil fields such as anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical treatment, visible light wireless communication and the like can be met;
optionally, the inorganic perovskite nano composite fiber membrane has excellent catalytic activity, and can meet the application requirements of industrial and civil fields of pollutant degradation, energy conversion, medical protection and the like.
The invention has the beneficial effects that: by designing and preparing an inorganic perovskite nano composite fiber membrane with high fluorescence and high catalytic activity and adopting a high-speed and high-pressure jet forming technology to prepare the nano fiber with a reticular structure of fiber staggered structureFilm, CsPbX3The (X is halogen element) perovskite and the nano composite material thereof and other active materials with high fluorescence and high catalytic activity are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, and the gain material is dispersed or attached on the surfaces of the fiber membrane and the active materials. The prepared inorganic perovskite nano composite fiber membrane has the dual-functional characteristics of high fluorescence and high catalytic activity, can keep long-term structure and performance stability under complex environmental conditions, and can be used as an effective mode for storing active materials and a raw material of ink-jet printing ink. The fluorescent characteristic of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical treatment, visible light wireless communication and the like, and the catalytic activity of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of pollutant degradation, energy conversion, medical protection and the like.
Drawings
FIG. 1 shows CsPbX of the present invention3Scanning Electron Microscope (SEM) images of inorganic perovskite nanocomposite fiber membranes.
FIG. 2 shows CsPbX according to an embodiment of the present invention3Scanning projection electron microscope (STEM) images of inorganic perovskite nanocomposite fiber membranes.
FIG. 3 shows CsPbX according to an embodiment of the present invention3Energy dispersive X-ray spectroscopy (EDS) diagram of inorganic perovskite nano composite fiber membrane.
FIG. 4 shows CsPbX used in examples of the present invention and comparative examples3Inorganic perovskite nanocomposite fiber film, CsPbX3Fluorescence spectroscopy (PL) patterns of inorganic perovskite and nanofiber membranes.
FIG. 5 shows CsPbX of the present invention3Ultraviolet-visible spectrum (UV-visible) diagram of photocatalytic degradation of methylene blue of inorganic perovskite nano composite fiber membrane.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and examples, and it is obvious that the described examples are only a part of the embodiments of the present invention, but not all of the embodiments. All other technical solutions obtained by a person skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
The nano-structure material in the prior art has high toxicity, CsPbX3The perovskite material contains toxic lead element, and CsPbX is caused by agglomeration and the like3The phase transition of the perovskite material leads to the reduction of the chemical activity and the loss in the use process, which causes the sharp reduction of the use performance of the material and serious safety problems. In order to solve the technical problems, the invention provides an inorganic perovskite nano composite fiber membrane with high fluorescence and high catalytic activity, which adopts a high-speed and high-pressure jet forming technology to prepare a fiber interlaced-structured network-structured nano fiber membrane CsPbX3The (X is halogen element) perovskite and the nano composite material thereof and other active materials with high fluorescence and high catalytic activity are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, and the gain material is dispersed or attached on the surfaces of the fiber membrane and the active materials. The prepared inorganic perovskite nano composite fiber membrane has high fluorescence characteristic and high catalytic activity, can keep long-term structure and performance stability under complex environmental conditions, and can be used as an effective mode for storing active materials and a raw material of ink-jet printing ink. The fluorescent characteristic of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical treatment, visible light wireless communication and the like, and the catalytic activity of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of pollutant degradation, energy conversion, medical protection and the like.
The following provides a general overview of CsPbX for embodiments of the invention3An inorganic perovskite nanocomposite fiber membrane is explained.
FIG. 1 shows CsPbX3SEM image of inorganic perovskite nanocomposite fiber membrane. CsPbX3The (X is halogen element) perovskite and its nano composite material with high fluorescence and high catalytic activity are uniformly dispersed on the surface of fibre membrane and in its interior, and the gain material is dispersed or adhered on the fibre membrane andthe active material surface.
Specifically, the method comprises the following steps:
the inorganic perovskite nano composite fiber membrane is prepared by adopting a high-speed and high-pressure jet forming technology, and jet fluid comprises the following components:
the inorganic perovskite nano composite fiber membrane, CsPbX3The perovskite and the nano composite material thereof and other active materials with high fluorescence and high catalytic activity comprise CsPbX3Nanocrystalline, synthetic CsPbX of halogen anion exchange3-xX’xNanocrystalline and CsPbX in-situ growth on surface of nano two-dimensional material3One or more of the nano composite materials; the CsPbX3The perovskite and the nano composite material thereof have the characteristics of high fluorescence and high catalytic activity;
the inorganic perovskite nano composite fiber membrane has the advantages that the gain material is dispersed or attached on the surfaces of the fiber membrane and the active material, and the CsPbX can be enhanced3The perovskite and the nano composite material thereof have fluorescence or catalytic activity, and the gain material comprises one or more of carbon quantum dots, graphene quantum dots, II-VI group quantum dots and III-V group quantum dots;
optionally, the group II-VI quantum dots include PbS, CdS, CdSe, ZnS, and the group III-V quantum dots include InP;
the fiber membrane of the inorganic perovskite nano composite fiber membrane is prepared by using a dissolved high molecular polymer through a high-speed and high-pressure jet forming technology, wherein the high molecular polymer is one or more of polymethyl methacrylate, polyvinylpyrrolidone, polypropylene, polytetrafluoroethylene, polyvinyl acetate, polyvinylidene fluoride and polyacrylonitrile;
in the preparation process of the inorganic perovskite nano composite fiber membrane, CsPbX is required to be added3The perovskite, the nano composite material, the gain material and the high molecular polymer thereof are dissolved in a solvent, wherein the solvent comprises toluene, o-xylene and m-xyleneOne or more of xylene, p-xylene, n-hexane, tetradecane, ethyl acetate, methyl acetate, ethyl formate, anhydrous ethanol, isopropanol, ethylene glycol, dichloromethane, chloroform, and 1, 2-dichloroethane;
the preparation process of the inorganic perovskite nano composite fiber membrane comprises the steps of preparing the nano composite fiber membrane by a high-speed and high-pressure jet forming technology, and passivating the surface defects of the nano composite fiber membrane by low-temperature heat treatment, so that the stability of the structure and the performance of the inorganic perovskite nano composite fiber membrane under the complex environmental condition is improved;
wherein, in the high-speed and high-pressure jet forming process, the adopted high pressure is 5-25 kV; the spraying speed is 0.1-10 mm/min;
in the process of passivating the nano composite fiber film by low-temperature heat treatment, the temperature is 20-300 ℃, the humidity is 20-80%, the treatment time is 1-24h, and the atmosphere is one or more of vacuum, air, argon and nitrogen;
the following examples and comparative examples provide CsPbX according to embodiments of the present invention3Inorganic perovskite nano composite fiber membrane and CsPbX3The differences in the properties of the inorganic perovskite and nanofiber membranes will be described in detail.
Examples
20 parts by weight of CsPbBr3Dissolving nanocrystalline, 0.05 weight part of graphene quantum dots and 200 weight parts of polymethyl methacrylate in 1500 weight parts of methyl acetate to prepare jet liquid, and adopting a high-speed and high-pressure jet forming technology to obtain CsPbBr under the conditions that the high pressure is 20kV and the jet speed is 0.5mm/min3The nano composite fiber membrane is kept for 3 hours under the air condition that the temperature is 150 ℃ and the humidity is 30 percent to obtain the passivated CsPbBr3The STEM pattern of the nanocomposite fibers of the nanocomposite fiber membrane is shown in fig. 2, and the EDS results are shown in fig. 3. As can be seen, CsPbBr3The nano-crystals are uniformly distributed on the surface and inside of the prepared nano-fiber membrane, and the EDS also shows that the prepared particle component is CsPbBr3. Prepared CsPbBr3The fluorescence effect of the nano composite fiber membrane is shown in figure 4, and the UV-visible graph of the photocatalytic degradation of methylene blue is shown in figure 5. As can be seen from the figure, the prepared nano-particlesThe composite fiber membrane has high fluorescence performance and high catalytic activity.
Comparative example
Without addition of CsPbBr3The fluorescence effect of the nanofiber membrane prepared by the jet liquid of the nanocrystals and the graphene quantum dots according to the method of the embodiment is shown in fig. 4. As can be seen from the figure, CsPbBr was not added3The nano-fiber film of the nano-crystal and graphene quantum dot has no fluorescence effect, and meanwhile, the nano-fiber film is also found to be used for photocatalytic degradation, and the fiber film has no capability of photocatalytic degradation of methylene blue.
And CsPbBr3Although the nanocrystal has good fluorescence effect and catalytic activity, the loss in the use process is caused by the existence mode of the nanocrystal, and the good fluorescence and catalytic activity cannot be kept stable in a complex environment.
CsPbX based on preparation3The inorganic perovskite nano composite fiber membrane has the characteristics of high fluorescence and high catalytic activity, and the diversified application of the nano composite fiber membrane can be realized through the preparation method, the improvement and the exploration of the application direction.
In one implementation mode, the inorganic perovskite nano composite fiber membrane can be directly and rapidly printed and formed on the surface of a rigid, flexible and curved substrate by adopting a high-speed and high-voltage electrostatic jet forming technology;
in another implementation mode, the inorganic perovskite nano composite fiber membrane has the characteristics of high fluorescence and high catalytic activity, and can be used as CsPbX3Perovskite and nano composite materials thereof and the like have high fluorescence and high catalytic activity. CsPbX3Active materials with high fluorescence and high catalytic activity, such as perovskite and nano composite materials thereof (X is halogen element), are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, so that the increase and phase change of crystal grains caused by the agglomeration of the nano materials are avoided, and the active materials can still keep good fluorescence characteristics and excellent catalytic activity for a long time under the complex environmental condition and have stable structure and performance;
in another implementation mode, the inorganic perovskite nano composite fiber membrane can be used as a raw material of ink-jet printing ink. The prepared inorganic perovskite nano composite fiber membrane can be dissolved in a solvent of ink-jet printing ink, and after the nano composite fiber membrane with proper addition amount is dissolved in the solvent, the ink meeting the requirements of ink-jet printing viscosity and surface tension can be obtained;
in another implementation mode, the inorganic perovskite nano composite fiber membrane has good fluorescence characteristics, so that the application requirements of industrial and civil fields such as anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical and visible light wireless communication can be met;
in another implementation mode, the inorganic perovskite nano composite fiber membrane has excellent catalytic activity, and can meet the application requirements of industrial and civil fields of pollutant degradation, energy conversion, medical protection and the like.
As can be seen from the above, the inorganic perovskite nano composite fiber membrane with high fluorescence and high catalytic activity is designed and prepared, and the high-speed and high-pressure jet forming technology is adopted to prepare the nano fiber membrane with the reticular structure of fiber staggered structure, CsPbX3The (X is halogen element) perovskite and the nano composite material thereof and other active materials with high fluorescence and high catalytic activity are uniformly dispersed on the surface of the fiber membrane and in the fiber membrane, and the gain material is dispersed or attached on the surfaces of the fiber membrane and the active materials. The prepared inorganic perovskite nano composite fiber membrane has high fluorescence characteristic and high catalytic activity, can keep long-term structure and performance stability under complex environmental conditions, and can be used as an effective mode for storing active materials and a raw material of ink-jet printing ink. The fluorescent characteristic of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of anti-counterfeiting identification, safety monitoring, building photovoltaic integration, biomedical treatment, visible light wireless communication and the like, and the catalytic activity of the inorganic perovskite nano composite fiber membrane can meet the application requirements in the fields of pollutant degradation, energy conversion, medical protection and the like.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (13)
1. The inorganic perovskite nano composite fiber membrane is characterized in that a high-speed and high-pressure jet forming technology is adopted to prepare a fiber interlaced-structure nano fiber membrane, and perovskite CsPbX is uniformly dispersed on the surface and in the fiber membrane3X is a halogen element, and nanocomposites thereof; the surface of the fiber membrane and the composite material is dispersed or attached with the gain material.
2. The fibrous membrane according to claim 1, wherein the liquid of the jet comprises the following components:
3. the fibrous membrane of claim 2, wherein the CsPbX is3Perovskite and its nano composite material comprise CsPbX3Nanocrystalline, synthetic CsPbX of halogen anion exchange3-xX’xNanocrystalline and CsPbX in-situ growth on surface of nano two-dimensional material3One or more of the nano composite materials; the CsPbX3The perovskite and the nano composite material thereof have the characteristics of high fluorescence and high catalytic activity.
4. The fiber membrane of claim 2, wherein the gain material is used to enhance CsPbX3The perovskite and the nano composite material thereof have fluorescence characteristics or catalytic activity, and the gain material comprises one or more of carbon quantum dots, graphene quantum dots, II-VI group quantum dots and III-V group quantum dots.
5. The fiber film of claim 4, wherein the group II-VI quantum dots comprise PbS, CdS, CdSe, ZnS and the group III-V quantum dots comprise InP.
6. The fiber membrane of claim 2, wherein the high molecular polymer is one or more of polymethyl methacrylate, polyvinylpyrrolidone, polypropylene, polytetrafluoroethylene, polyvinyl acetate, polyvinylidene fluoride, and polyacrylonitrile.
7. The fiber membrane of claim 2, wherein the solvent comprises one or more of toluene, o-xylene, m-xylene, p-xylene, n-hexane, tetradecane, ethyl acetate, methyl acetate, ethyl formate, absolute ethanol, isopropanol, ethylene glycol, dichloromethane, chloroform, and 1, 2-dichloroethane.
8. The fiber membrane of claim 1, wherein the preparation of the fiber membrane comprises the preparation of a nano composite fiber membrane by high-speed and high-pressure jet forming, and the passivation of the surface defects of the nano composite fiber membrane by low-temperature heat treatment, so as to improve the stability of the structure and the performance of the nano composite fiber membrane under complex environmental conditions;
wherein, the high-speed and high-pressure jet molding adopts high pressure of 5-25 kV; the spraying speed is 0.1-10 mm/min;
the low-temperature heat treatment passivation is carried out at the temperature of 20-300 ℃, the humidity of 20-80%, the treatment time of 1-24h, and the atmosphere of one or more of vacuum, air, argon and nitrogen.
9. The fiber membrane of claim 1, wherein the fiber membrane is formed by rapid printing directly on the surface of a rigid, flexible, curved substrate using a high-speed, high-pressure jet forming technique.
10. The use of the fiber membrane according to claim 1, wherein the fiber membrane has the characteristics of high fluorescence and high catalytic activity, and can be used as an effective way for storing active materials with high fluorescence and high catalytic activity.
11. Use according to claim 10, wherein the fibrous membrane is used as a raw material for ink-jet printing inks.
12. The use according to claim 10, wherein the fiber film is used in the fields of anti-counterfeiting identification, security monitoring, building photovoltaics integration, biomedical and visible light wireless communication.
13. Use according to claim 10, wherein the fibrous membrane is used in the fields of pollutant degradation, energy conversion and medical protection.
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| CN113105708A (en) * | 2020-08-11 | 2021-07-13 | 五邑大学 | Graphene and quantum dot co-doped polymer, preparation method and application |
| CN113174699A (en) * | 2021-04-27 | 2021-07-27 | 上海工程技术大学 | Preparation method of graphene-doped polypropylene melt-blown non-woven fabric, melt-blown fabric and application of melt-blown fabric |
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