279 results about "Graphene quantum dot" patented technology

The invention belongs to the technical field of building materials, and discloses a preparation method of reflective heat-insulation waterproof real stone paint, which comprises the following three process stages: core layer synthesis, shell layer loading and real stone paint integration: coating a continuous SiO layer on the surface of nano TiO in situ to form TiO-coated SiO particles; graphene quantum dots and a hindered amine light stabilizer are loaded on the surfaces of TiOatSiO particles to form a composite functional filler; adding the composite functional filler into the acrylic emulsion base material in batches at a low speed, and adjusting the rheological property with the aid to obtain a finished product. The preparation process disclosed by the invention is completely compatible with an existing real stone paint industrial production line, does not need to add special equipment, and has excellent reflective heat insulation, heat preservation, water resistance, weather resistance and aging resistance and large-scale industrial feasibility; the technical problems of resin oxidative degradation caused by TiO photocatalytic activity, rapid attenuation of solar radiation reflectivity, failure of waterproof and hydrophobic performance and easiness in damage and stripping of a coating structure of the existing nano TiO-based reflective heat-insulation real stone paint are solved.

The invention relates to the technical field of biomedical materials, and discloses an electret electrostatic therapy membrane and a preparation process thereof.The electret electrostatic therapy membrane is prepared from, by mass, 15%-20% of fluorinated polyether ester, 10%-20% of a composite nano-fiber material, 10%-20% of a composite nano-fiber material, 10%-20% of a composite nano-fiber material and the balance water. 1%-2% of carboxymethyl chitosan; 2-5% of nano cerium oxide particles with the particle size of 50-100 nm; 0.5-1.0% of graphene quantum dots, the particle size of which is 5-10 nm; 1%-2% of sodium hyaluronate; the components are prepared into a film through an electrostatic spinning method, electret performance is given to the film through a charge injection process, finally, the film body is attached to a flexible silica gel adhesion layer, and the flexible silica gel adhesion layer is externally coated with a peelable protective film so that the structural integrity can be kept before the flexible silica gel adhesion layer is used. The composite membrane body disclosed by the invention shows excellent adhesion, charge activation capability and thermal response performance in applications of electrostatic therapy, dielectric assisted stimulation and the like, and has good multi-scene adaptability and clinical application potential.

The invention relates to the technical field of coatings, in particular to an acrylate-epoxy resin composite coating and a preparation method thereof. According to the technical scheme, the coating is prepared from 25 to 35 parts of methyl methacrylate, 15 to 25 parts of butyl acrylate, 10 to 20 parts of epoxy resin E-5110, 8 to 15 parts of organic silicon modified acrylate prepolymer, 5 to 12 parts of fluorocarbon modified epoxy resin, 4 to 8 parts of core-shell structure corrosion inhibition nano container, 1 to 3 parts of functionalized graphene quantum dots and 4 to 10 parts of polyhedral oligomeric silsesquioxane maleimide modified amine curing agent. And 1-3 parts of a hindered amine light stabilizer. By integrating the core-shell structure corrosion inhibition nano container, the functionalized graphene quantum dots and the photo-thermal dual responsive curing agent component, the sensing, response and self-repairing of the coating on damage are realized, and long-acting corrosion resistance, weather resistance, bacteria resistance, mechanical property balance and intelligent maintenance are considered; and efficient and economical full-period protection is provided for equipment in an extreme environment.

The invention discloses a preparation method and application of an amino-functionalized graphene quantum dot modified MXene loose nanofiltration membrane. The preparation method comprises the following steps: mixing an MXene nanosheet dispersion liquid with an aminated graphene quantum dot aqueous solution, and preparing an amino functionalized graphene quantum dot / MXene mixed dispersion liquid by adopting a self-assembly method; and filtering and depositing the obtained mixed dispersion liquid on the modified base membrane to obtain the MXene loose nanofiltration membrane. According to the preparation method disclosed by the invention, the zero-dimensional aminated graphene quantum dots are creatively embedded into the MXene nanosheets, so that the MXene loose nanofiltration membrane which is stable in structure and regular in stacking is prepared. The nanofiltration membrane has good separation performance on different dyes and inorganic salts while effectively inhibiting water swelling, is a next-generation separation membrane with high stability and high selectivity, is mild and simple in preparation process, and has a wide application prospect.

The invention relates to the technical field of functional coatings, in particular to a graphene reinforced heavy-duty epoxy coating for a marine environment. The invention discloses a graphene-based epoxy resin coating which is prepared from the following raw materials in parts by weight: 60-80 parts of bisphenol A epoxy resin, 5-10 parts of aminated graphene-carbon nanotube composite powder, 3-6 parts of zinc-aluminum-cerium ternary composite phosphate, 3-6 parts of nano boron nitride / silicon dioxide core-shell particles, 15-25 parts of a polyamide-epoxy curing agent, 1-3 parts of a silane coupling agent KH-560 and 5-8 parts of cashew nut shell oil modified phenolic aldehyde amine. The anti-rust paint is prepared from the following components in parts by weight: 0.5-2 parts of carboxylated graphene quantum dots, 2-4 parts of organic montmorillonite, 0.1-0.5 part of a fluorocarbon surfactant, 8-15 parts of a composite anti-rust pigment and 10-20 parts of an organic solvent. The coating is excellent in corrosion resistance, capable of resisting marine corrosion for a long time, resistant to high temperature and resistant to cathodic disbonding, has the functions of aging tracing and biological adhesion resistance, is convenient to construct and stable in performance, and provides reliable protection for ocean engineering.

The invention discloses a high-density ceramic coating and a preparation method thereof, and relates to the technical field of polymer coatings, the high-density ceramic coating comprises, by mass, 33-35 parts of silica sol, 43-45 parts of a solvent, 0.35-0.42 part of a weak acid buffer agent and 18.5-19.9 parts of an auxiliary agent; wherein the solvent is prepared from the following components in parts by mass: 25.5 to 26.5 parts of MTMS, 0.5 part of deionized water and 16 to 19 parts of ethanol; the silica sol comprises 25.5-26.5 parts by mass of 45nm SiO2 sol and the balance of 15-20nm SiO2 sol, and the SiO2 sol is modified silica sol which is loaded by a metal organic framework or is subjected to in-situ growth of graphene quantum dots. The wear-resistant and high-temperature-resistant valve has the effects of wear resistance, high temperature resistance and long service life.

The invention relates to the technical field of composite coating preparation materials for battery diaphragms, in particular to a composite coating for a battery diaphragm as well as a preparation method and application. The invention discloses a graphene quantum dot / carbon nanotube composite material, which is prepared from the following components in percentage by weight: 3 to 8 percent of aminated graphene oxide-polydopamine graft, 10 to 18 percent of polyimide-polyetheretherketone-nano SiO2 hybrid, 2 to 5 percent of hydroxyapatite-montmorillonite core-shell particles, 0.5 to 3 percent of zinc borate-melamine cyanurate compound, 1 to 3 percent of graphene quantum dot-carbon nanotube hybrid, 2 to 6 percent of sodium carboxymethyl cellulose and 50 to 70 percent of deionized water. 0.5 to 2 percent of barium strontium titanate nanocrystalline or 1 to 3 percent of polyethylene glycol-polypropylene glycol segmented copolymer can also be added. All the components are combined through molecular-level reaction to construct a high-performance protection network. The composite coating is good in high temperature resistance and mechanical strength, high in ionic conduction efficiency, excellent in flame retardant effect and good in interfacial compatibility, the preparation process is environmentally friendly and easy to industrialize, the composite coating is suitable for various batteries, and the comprehensive performance of the composite coating is superior to that of a traditional coating.

The invention discloses a self-repairing graphene-based wind driven generator blade protection film and a preparation method thereof, and relates to the technical field of wind power generation equipment protection. The protection film adopts a gradient structure of a bonding buffer layer, a self-repairing functional layer and a multifunctional protection layer; the self-repairing functional layer comprises a hybrid network formed by hydroxylated functionalized graphene and elastomer particles and bionic packaging microcapsules, inner layer capsules containing graphene quantum dot reinforced resin and a latent catalyst curing agent are packaged in the microcapsules, multiple times of repairing of the same damaged area can be achieved, and the repairing strength is high; the multifunctional protective layer endows the coating with super-hydrophobic, anti-icing and ultraviolet-resistant functions through fluorinated graphene and nano TiO2 (at) ZnO composite particles; the preparation process is mature, the comprehensive protection performance is excellent, and the coating is suitable for wind driven generator blade protection in the severe environment.

The invention relates to the technical field of preparation of carbon dioxide adsorbents, and discloses a carbon dioxide solid adsorbent and a preparation method and application thereof, the carbon dioxide solid adsorbent comprises 10-15 parts of aminated montmorillonite, 5-8 parts of modified chitosan, 20-25 parts of desulfurized gypsum, 3-5 parts of a composite water-retaining agent, 1-2 parts of a functional buffer agent and 0.5-1 part of an ammonia adsorption accelerant. According to the invention, the aminated montmorillonite is adopted to replace traditional streptomycin, so that the raw material cost is reduced, and the risk of antibiotic residue is thoroughly eliminated; chitosan is modified through graphene quantum dots, the excellent oxidation resistance of the graphene quantum dots is utilized, an antioxidant does not need to be additionally added, the environment burden is reduced while the preparation process is simplified, and the degradation rate of the adsorbent in the natural environment is increased. All the components in the adsorbent have a synergistic effect, the aminated montmorillonite provides abundant adsorption active sites, the modified chitosan enhances the mechanical strength and stability of the adsorbent, the composite water-retaining agent and the buffer agent guarantee the stability of an adsorption environment, and the ammonia adsorption accelerant accelerates CO2 adsorption kinetics.

The invention relates to the technical field of preparation of high polymer materials and intelligent response materials, in particular to a preparation method of polyacrylamide for treatment. And constructing a quaternary polymerization system with acrylamide, a temperature-sensitive monomer and a zirconium-based metal organic framework-graphene quantum dot composite material. Magnetic response interpenetrating network gel is formed by induction of a photo-magnetic synergistic field, bacterial cellulose nanofibrils and a calcium silicate layered structure are introduced through a biomimetic mineralization technology, and the hierarchical porous carrier is prepared by combining a microfluidic crushing technology and a supercritical drying technology. Finally, through an intelligent regeneration mechanism of bimetal coordination activation and high-frequency magnetic field triggering, the material is endowed with multiple stimulation response characteristics, high adsorption capacity and in-situ regeneration capacity, and the mechanical strength and the salt resistance are remarkably improved through a pearl-layer-like micro-nano laminated structure. The method is suitable for industrial wastewater advanced treatment and emergency pollution repair scenes.

The invention discloses an iron-carbon composite material for heavy metal contaminated soil remediation and a preparation method of the iron-carbon composite material, and belongs to the field of heavy metal contaminated soil remediation. The iron-carbon composite material comprises rape straw, hydroxyapatite, zero-valent iron, sulfydryl functionalized magnetic cerium oxide and nitrogen-doped graphene quantum dot-sodium alginate. The sulfydryl-functionalized magnetic cerium oxide is prepared from cerium nitrate and ferric nitrate through precipitation, calcination and sulfhydrylation, and the nitrogen-doped graphene quantum dot-sodium alginate is prepared from citric acid and urea through microwave reaction, dialysis, mixing and freeze drying; the preparation method comprises the following steps: treating straws and hydroxyapatite to obtain ball-milled phosphorus-containing biochar, mixing the ball-milled phosphorus-containing biochar with zero-valent iron and two modifiers, and carrying out molding and high-temperature calcination to obtain the phosphorus-containing biochar-based composite material. The material has a remarkable remediation effect on the heavy metal contaminated soil, can effectively reduce the activity of heavy metals in the soil, has the characteristics of environmental friendliness and high stability, and is suitable for treating the soil compositely contaminated by the heavy metals such as cadmium and lead.

The invention relates to a preparation method of a bio-based mesoporous carbon material, and belongs to the technical field of carbon material preparation. The invention provides a preparation method of a bio-based mesoporous carbon material, and the bio-based mesoporous carbon material is prepared by taking agricultural and forestry wastes as raw materials through three steps of pretreatment, phosphoric acid activation and polyaniline-graphene quantum dot compounding. In the pretreatment stage, the raw materials are crushed, soaked in an ethanol-acetone mixed solution at 40-80 DEG C for 2-6 h and dried, and powder B is obtained; in the phosphoric acid activation stage, a 50-80% phosphoric acid solution is used for dipping for 12-48 hours according to the mass ratio of 1: (2-5), and carbonization is performed under the protection of 400-700 DEG C nitrogen to obtain a solid product In the compounding stage, D is dispersed in a 0.1-1 mol / L aniline hydrochloric acid solution, after polymerization is initiated by ammonium persulfate, 0.01-0.1 g / L graphene quantum dot solution is added for compounding, and after centrifugal drying, the high-performance carbon material with the specific surface area larger than or equal to 1800 m < 2 > / g, the proportion of 2-5 nm holes larger than 35% and the mesoporous rate larger than 75% is prepared, and the high-performance carbon material is suitable for the field of supercapacitors.

The invention discloses a preparation process of a flexible stretchable surface electromyographic motion sensing integrated electrode, and particularly relates to the field of flexible electronic technology and biomedical engineering.The electrode adopts thermoplastic polyurethane or polydimethylsiloxane as a substrate material, and conductivity and fatigue resistance are improved through doping of graphene quantum dots. The electrode comprises a myoelectricity sensing layer and a motion sensing layer, wherein the myoelectricity sensing layer is constructed through electrostatic spinning of a TPU nanofiber net and spraying of liquid metal, and the motion sensing layer forms a snakelike microcrack structure through silk-screen printing of a silver nanowire / TPU mixed material. The honeycomb-shaped insulating layer is used for isolating bimodal signals, and long-acting antibiosis and air permeability are achieved in combination with the self-repairing adhesion layer. After packaging, a Bluetooth 5.0 chip and a miniature lithium battery are integrated, and wireless signal transmission is supported.

The invention relates to the technical field of palladium recovery, in particular to a method for recovering palladium. According to the technical scheme, the method comprises a precipitant pre-synthesis stage, a targeted palladium precipitation stage and a multi-stage reduction purification stage, and the precipitant pre-synthesis stage comprises the step of adding 10-15 parts by mass of butanedione, 18-30 parts by mass of hydroxylamine hydrochloride and 0.1-0.3 part by mass of iron phthalocyanine into a reaction kettle. Through a composite precipitator system and a multi-stage reduction process, the method has safety and high efficiency: flammable and explosive solvents such as ethanol and highly toxic reducing agents such as hydrazine hydrate are not needed, so that the potential safety hazard of production and the environment-friendly treatment cost are remarkably reduced; high-selectivity capture and efficient reduction of palladium are achieved through magnetic separation of magnetic nano-microspheres, induced precipitation of nitrogen-doped graphene quantum dots and a staged temperature-control and pressure-control reduction technology, the palladium recovery rate and purity are high, the process period is short, operation is controllable, and the method is suitable for industrial continuous production.

The invention discloses a stealth coating material for aviation aircrafts. According to the invention, a three-layer composite structure design is adopted; the intelligent sensing layer is composed of graphene quantum dots and a piezoelectric nanofiber composite network, so that real-time sensing of electromagnetic wave signals is realized; the tunable metamaterial layer comprises a liquid crystal elastomer matrix and nickel-titanium alloy nanowires dispersed in the liquid crystal elastomer matrix, and electromagnetic parameters of the material are dynamically adjusted by applying an electric field or a temperature field; vanadium dioxide nanoparticles, a photonic crystal structure and carbon nanotube aerogel are integrated in the multispectral stealth layer, and radar, infrared and visible light multispectral synergistic stealth is achieved. The coating is further integrated with a microencapsulation repairing agent and an intelligent control system, and has the self-repairing and self-adaptive adjusting functions. Compared with the prior art, 0.1-40 GHz ultra-wide frequency band radar wave absorption is achieved, the radar cross section is reduced by 25-30 dB, the infrared radiation characteristic is reduced by 80% or above, the surface density is only 1.2-1.5 kg / m, the weight is reduced by 65% compared with a traditional coating, and a key material technical support is provided for a new generation of stealth aircrafts.

The invention discloses allyl functionalized hyaluronic acid hydrogel as well as a preparation method and application thereof in electrolyte, and belongs to the technical field of hydrogel electrolyte. And dissolving the modified hyaluronic acid in a solvent, sequentially adding a cross-linking agent, the modified chitin nanofibers and an initiator, carrying out polymerization reaction at a preset temperature for a preset time to obtain hydrogel, and soaking the hydrogel in an electrolyte to obtain the modified hyaluronic acid hydrogel electrolyte. According to the scheme, the existing problems that a traditional hydrogel electrolyte is prone to icing at low temperature, the ionic conductivity is suddenly reduced, and the mechanical performance is degraded are solved, and the mechanical strength is enhanced by constructing an allyl functionalized hyaluronic acid three-dimensional chemical cross-linked network; modified chitin nanofibers are introduced to bind water molecules through hydrogen bonds to inhibit growth of ice crystals, graphene quantum dots are added to optimize an ion transmission path, and the hydrogel electrolyte which still keeps high ionic conductivity, excellent freezing resistance and high mechanical strength at the low temperature of-40 DEG C is prepared.

The invention belongs to the field of polymer composite materials, and discloses an antistatic composite material for a safety helmet and a preparation method of the antistatic composite material. Comprising the following components: 70 to 90 parts of a PC / ABS blending matrix, 12 to 20 parts of basalt fiber treated by a titanate coupling agent NDZ-311, 4 to 8 parts of a graphene quantum dot modified carbon nanotube-polyethylene glycol composite antistatic agent, 3 to 6 parts of polyaryletherketone micro powder, 0.2 to 0.6 part of an antioxidant 1010 and 0.4 to 1.0 part of calcium stearate. Wherein the mass ratio of PC to ABS in the PC / ABS blended matrix is (6: 4)-(7: 3); the invention aims to solve the problems that in the prior art, a single antistatic agent is difficult to consider the antistatic effect and the mechanical property, or materials are embrittled due to high addition amount, or the antistatic property fluctuates along with the environment and is easy to lose due to low addition amount; the interface bonding force between the conventional reinforced fiber and the PC / ABS matrix is weak, and the mechanical strength is limited to be improved; the long-term aging resistance of the material is poor, and the long-term use requirements of outdoor, chemical and other severe environments cannot be met.

This invention discloses a method and device structure for improving the electrical transport properties of etched graphene quantum dots, belonging to the field of low-temperature transport testing technology. The method includes the following steps: fabricating etched graphene quantum dot devices; performing preliminary electrical transport characterization by cooling; and undergoing several cycles of "sample electrode grounding protection – heating to above 200K or room temperature – cooling again – electrical transport characterization" to improve the electrical transport properties of the device, enabling subsequent observation and manipulation of the quantum dot's fine charge stability map. The optimized method of this invention, through several heating and cooling thermal cycles, successfully adjusts the coulomb blocking region of the graphene quantum dots from hundreds of volts towards zero, facilitating the application of a gate voltage. Furthermore, the charge stability map of the two quantum dots is significantly optimized and improved, greatly increasing the yield of etched graphene quantum dot devices. In addition, the optimized method of this invention is simple to operate and has significant effects, making it suitable for widespread application.

The invention relates to the technical field of wastewater treatment, in particular to an iron-based nano-enzyme coupled photocatalytic system and application thereof in organic wastewater degradation, and the iron-based nano-enzyme coupled photocatalytic system comprises the following components in percentage by weight: 10-20% of iron-based nano-enzyme, 15-25% of a modified photocatalyst, 25-35% of a porous carrier, 3-8% of an electron mediator, 1-3% of a pH regulator and 0.5-2% of a rare earth element dopant; the iron-based nano-enzyme is nitrogen-doped iron-copper-cobalt trimetal nano-enzyme, the molar ratio of Fe to Cu to Co is (6: 1: 1)-(8: 1: 1), the doping amount of N is 3-6at%, the particle size is 20-50nm, and the peroxidase activity is 120-150U / mg; the modified photocatalyst is graphene quantum dot-carbon dot co-modified titanium dioxide, the total loading capacity is 2-5 wt%, and the forbidden bandwidth is 2.8-3.0 eV; the porous carrier is a mesoporous silica-carbon nanotube-montmorillonite composite material. According to the invention, the synergistic degradation effect is excellent, refractory pollutants can be decomposed, and no toxic intermediates exist; the catalyst is suitable for high-salt and high-turbidity wastewater with different acidity and alkalinity, is good in stability, can be recycled, and is less in metal dissolution; the energy consumption is low, the operation is simple and convenient, the treated wastewater reaches the standard and can be recycled, and the environmental and economic benefits are remarkable.

The invention discloses phosphorus-doped titanium dioxide modified chitosan hydrogel electrolyte as well as a preparation method and application thereof, and belongs to the technical field of hydrogel electrolyte. Comprising a phosphorus-doped titanium dioxide modified chitosan network and graphene quantum dot modified lignin fibers, the phosphorus-doped titanium dioxide modified chitosan network forms a three-dimensional chemical cross-linked network through epoxy chloropropane cross-linking, and the graphene quantum dot modified lignin fibers are dispersed in the chemical cross-linked network and serve as physical cross-linked points, so that a chemical-physical double-cross-linked network structure is jointly formed, and the basic ions are loaded in the chemical-physical double-cross-linked network structure. Through the design, the problems that a traditional hydrogel electrolyte is low in mechanical strength and insufficient in ionic conductivity are solved, and the hydrogel has high mechanical strength, excellent low-temperature freezing resistance and high ionic conductivity and is suitable for a battery electrolyte in a low-temperature environment.

The invention discloses a graphene quantum dot reinforced copper-based composite material and a preparation method thereof. The preparation method of the graphene quantum dot reinforced copper-based composite material comprises the following steps: (1) taking itaconic acid and ethidene diamine as precursors, synthesizing graphene quantum dots GQDs through a hydrothermal method, and centrifuging, dialyzing and freeze-drying to obtain GQDs powder; (2) preparing the graphene quantum dot GQDs powder into GQDs / Cu2O composite powder through a molecular-level blending method; and (3) the GQDs / Cu2O composite powder is annealed and reduced into GQDs / Cu composite powder in the Ar / H atmosphere, then vacuum ball milling and spark plasma sintering treatment are conducted, and the block GQDs / Cu composite material is prepared. The method disclosed by the invention is green, safe and low in cost, and the prepared composite material is uniform in GQDs dispersion and strong in interface bonding, has excellent conductivity and corrosion resistance, and is suitable for the fields of electronics, electrics, aerospace and the like.

This invention discloses a fluorinated carbon / halogenated graphene quantum dot composite material, its preparation method, and its applications, belonging to the field of lithium / fluorinated carbon batteries. In this invention, powdered halolated graphene quantum dots and carbon materials are separately dispersed in an organic solvent. A microwave solvothermal method is used, followed by solvent removal to obtain the carbon material / halogenated graphene quantum dot composite material. Then, a gas-phase fluorination method is used to prepare the fluorinated carbon / halogenated graphene quantum dot composite material. The resulting composite material can be used as the positive electrode active material for lithium / fluorinated carbon primary batteries. This invention can improve the capacity performance and discharge capability under high current of lithium fluorinated carbon batteries, while also improving their shelf stability.

The application discloses a graphene quantum dot / indium sulfide electromagnetic wave absorbing material and a preparation method thereof, and comprises the following steps: carrying out a hydrothermal reduction reaction on trinitro-pyrene and an alkaline solution to obtain graphene quantum dot powder rich in hydroxyl functional groups on the surface; and carrying out a hydrothermal reaction on a mixture of indium chloride tetrahydrate and thioacetamide and the graphene quantum dot powder to obtain a graphene quantum dot / indium sulfide heterojunction electromagnetic wave absorbing material with a sulfur vacancy concentration of 3.8% to 5.7%. The addition amount of the sulfur source is controlled by regulating the addition amount of the thioacetamide in the hydrothermal reaction process, the introduced sulfur vacancy concentration is accurately controlled, the In-O covalent bond is formed at the interface between the graphene quantum dot and the indium sulfide, the interface covalent bridging structure is formed, the interface charge transfer efficiency is accelerated, the built-in electric field in the interface is enhanced, stronger interface polarization loss is induced, and the performance of high absorption intensity and wide bandwidth of the composite wave absorbing material is realized.

The invention relates to the technical field of electrochemical luminescence sensing, and discloses an electrochemical luminescence immunosensor for detecting interleukin-1 beta, a preparation method and application thereof, the electrochemical luminescence immunosensor comprises a working electrode, a reference electrode and a counter electrode; the working electrode comprises a substrate electrode and an ordered mesoporous silica film (SNF) modified on the surface of the substrate electrode; a composite nano-enzyme containing cobaltosic oxide nanoparticles and nitrogen-doped graphene quantum dots is loaded in a nano-pore channel of the SNF, the outer surface of the SNF is modified with an epoxy group, and an anti-interleukin-1beta antibody is covalently immobilized through the epoxy group; a detection system of the electrochemical luminescence immunosensor is a luminol / dissolved oxygen system. According to the electrochemical luminescence immunosensor, a luminol / dissolved oxygen system signal can be remarkably enhanced, and high-sensitivity and accurate quantitative detection of interleukin-1 beta is realized under a neutral condition.

The invention provides a high-strength collision-resistant cable and a preparation method thereof. The high-strength collision-resistant cable comprises an oxygen-free copper conductor, a modified insulating layer, a multifunctional buffer layer, a high-strength armor layer and a wear-resistant outer sheath which are sequentially arranged from inside to outside, the invention relates to a preparation method of an anti-aging agent. The high-strength collision-resistant cable is prepared from the following raw materials: 35 to 45 parts of modified crosslinked polyethylene, 12 to 18 parts of polyisobutene grafted maleic anhydride-nano boron nitride compound, 8 to 15 parts of modified high-performance polypropylene-graphene quantum dot compound, 3 to 6 parts of nano titanium dioxide, 7 to 12 parts of aramid staple fiber, 5 to 10 parts of melamine cyanurate and 0.8 to 1.5 parts of calcium stearate. 0.5 to 1.0 part of a silane coupling agent, 6 to 10 parts of polycaprolactone and 0.3 to 0.8 part of an antioxidant. The obtained cable has excellent comprehensive performance of high strength, impact resistance, insulation, flame retardance and weather resistance.

The application relates to the technical field of coating preparation, in particular to a nano coating for a self-cleaning polycrystalline solar module and a preparation method, wherein the coating is composed of titanium dioxide nanotubes, fluorosilane modified silica aerogel, graphene quantum dots and polyaniline-polyazole copolymer; the titanium dioxide nanotubes are prepared through a hydrothermal reaction and calcination, the aerogel is synthesized through a sol-gel method, the quantum dots are obtained through pyrolysis reduction, and the conductive polymer is obtained through oxidation polymerization; the components are dispersed in a solvent in proportion, ultrasonic dispersion is carried out after the addition of a leveling agent, the solar module is coated through a dip coating method, and the coating is formed through drying and ultraviolet curing. The self-cleaning nano coating is composed of multiple components, forms a multistage rough structure, realizes superhydrophobicity, widens a light response range, improves photocatalytic efficiency, improves electrical performance and increases photoelectric conversion efficiency.

The invention discloses an electrolytic hydrogen production electrochemical synthesis ammonia electrode catalyst and a preparation method thereof, relates to the technical field of electrochemical catalysts, and belongs to the patent classification number C25B1 / 00. Comprising the following steps: preparing graphene quantum dot powder by using a fused salt cutting method; then coating the graphene quantum dots through dopamine auto-polymerization and loading a molybdenum source, and annealing to obtain Mo-NX-coated GQDs powder; then compounding the modified Mo-NX-coated GQDs and TiCTXMXene colloid, performing vacuum filtration, depositing on carbon paper, and annealing to form a support film; and finally, performing CFplasma treatment to form a hydrophobic layer, and spin-coating perfluorinated sulfonic acid resin on the side of the carbon paper to obtain the electrode catalyst. According to the method, an efficient active center is constructed, electron / ion transmission is optimized, a three-phase interface is regulated and controlled, the ammonia yield and the Faraday efficiency are remarkably improved, and the method is suitable for a normal-temperature and normal-pressure electrochemical ammonia synthesis technology.

This invention discloses a high-temperature conductive graphene solution and its preparation method, comprising the following components by weight: 1800-2000 parts of a dispersion containing 3-5 nm graphene quantum dots, wherein the quantum dot content is 5-10 wt%; 450-510 parts of tin dioxide with a particle size ≤0.2 μm; 15-20 parts of ammonium tungstate and 15-20 parts of lanthanum oxide; 30-40 parts of manganese chloride tetrahydrate, 20-30 parts of nickel chloride, and 20-30 parts of copper chloride; 8000-10000 parts of a solvent system, wherein deionized water ≤4000 parts, anhydrous ethanol ≤5000 parts, isopropanol ≤100 parts, and n-butanol ≤50 parts; 800-1000 parts of tri-n-butyltin hydride and 100-300 parts of citric acid. Due to the adoption of the above technical solutions, this application has achieved breakthroughs in the stability of conductive networks through quantum dot bridging mechanisms; the standard deviation of electron migration path length has been reduced from 1.2 μm to 0.08 μm; the heterojunction interface has been optimized and a Type-II band structure has been formed, resulting in an 82% reduction in contact resistance.

The invention discloses biomass graphene quantum dot doped hydrogel and a preparation method and application thereof.Biomass graphene quantum dots are adopted for the hydrogel, during preparation, biomass materials such as rice straw are selected for carbonization, oxidation treatment and hydrothermal reaction are performed to obtain quantum dots, and then the quantum dots and hydrogel components are prepared into the hydrogel according to a specific method. The preparation method has the beneficial effects that the biomass graphene quantum dot doped hydrogel has excellent selective adsorption capacity on specific heavy metal ions (such as Fe3 and Pb2), target heavy metal ions can be efficiently separated and enriched in a complex heavy metal ion mixed system, and the pertinence and efficiency of adsorption are improved; the adsorbent can be regenerated by diluted hydrochloric acid or a nitric acid solution after adsorption saturation, the adsorption performance recovery rate after regeneration reaches 90%-95%, the adsorption performance is still kept above 80% of the initial capacity after five times of recycling, and biomass resource utilization and efficient heavy metal pollution treatment are realized.

The invention provides a microwave-photocatalysis synergistic sludge treatment and carbon material co-production method, a microwave-photocatalysis synergistic sludge treatment and carbon material co-production system and application, and relates to the technical field of solid waste resourceful treatment. Comprising the following steps: (a) sequentially carrying out microwave treatment, photocatalytic treatment, electrochemical reduction-adsorption coupling treatment and supercritical water oxidation treatment on sludge to obtain H2 and CO2; and (b) preparing the nano carbon material under the action of plasma by taking CO2 as a carbon source. Microplastics are crushed and pollutants are activated through microwave-photocatalysis synergistic pretreatment, the drug residue degradation efficiency is remarkably improved, heavy metal removal and platinum group metal recovery are achieved in combination with electrochemical reduction-adsorption coupling, and hydrogen and CO2 are co-produced by oxidizing and mineralizing organic matter through supercritical water. CO2 is converted into high-value graphene quantum dots through plasma, and efficient treatment of sludge and high-value utilization of carbon resources are achieved.