107 results about "Mesoporous material" patented technology

The application relates to the technical field of wastewater treatment, and particularly discloses a degradation method and application of microplastics in aquaculture wastewater. The degradation method comprises the steps of preparation of a mesoporous structure magnetic immobilized material, pretreatment, adsorption-enzymolysis, microbial degradation, magnetic separation, precipitation and the like. The shell layer and the mesoporous structure of the mesoporous material are used to efficiently immobilize composite enzymes, so that enzyme loss is avoided, and the composite enzymes are used for targeted degradation of PET, PE and PP, and the total microplastic removal rate is more than 94.5%. The composite heat-resistant bacteria relay enzymolysis product is deepened and mineralized, and a phased treatment agent is matched to enhance mass transfer, so that the microbial activity is increased by 3 times. The mesoporous material is protected by the shell layer, the enzyme activity retention rate is more than 85%, the effluent COD is less than or equal to 50 mg / L, meets the discharge requirements, is suitable for microplastic pollution treatment in multiple scenes, and has the advantages of high efficiency, economy and environmental friendliness.

The application provides a halide solid-state electrolyte composite with high air stability and mechanical enhancement, a preparation method thereof and a full solid-state battery, and relates to the technical field of full solid-state batteries. In view of the problems of the existing halide solid-state electrolyte, such as sensitivity to humidity, easy hydrolysis and insufficient mechanical strength, the application forms a continuous multi-layer uniform pore structure by uniformly dispersing mesoporous reinforcing material particles in the halide solid-state electrolyte matrix. The composite significantly improves the humidity resistance and mechanical properties while maintaining high ionic conductivity: after being exposed to a 50% relative humidity environment for 1 hour, the ionic conductivity retention rate is not less than 90%, and the release of harmful gases such as HCl is effectively inhibited. The preparation method comprises wet mixing, drying and molding of the halide matrix and the mesoporous material in an inert atmosphere, and the process is simple and suitable for large-scale production. The composite can effectively improve the environmental stability and cycle performance of the full solid-state battery.

The invention discloses a mesoporous material taking a cement-based material as a precursor as well as a preparation method and application of the mesoporous material, and belongs to the technical field of building materials. The preparation method comprises the following steps: taking a cement-based material as a precursor, extracting silicate radicals and aluminate radicals, introducing a template agent in a subsequent polymerization process, and preparing the mesoporous material through a self-assembly process. The method is simple in process, low in energy consumption and small in pollution, and silica tetrahedrons and alumina tetrahedrons with different chain lengths and different proportions in the cement-based material are extracted through carbonization treatment; the performance of the mesoporous material is controllable according to the hydration degree of the cement-based material, the chain lengths of silicate radicals and aluminate radicals, the proportion of silicate radicals and aluminate radicals, the types of template agents and the like. The mesoporous material can realize high-value cyclic utilization of a cement-based material and waste thereof, the specific surface area, the pore volume, the particle size, the silica-alumina ratio, the crystallinity and other key properties of the mesoporous material can be flexibly regulated and controlled, and the mesoporous material can be widely applied to the fields of catalysis, adsorption, drug transportation, sensors and the like.

The disclosure relates to a modified aluminosilicate inorganic mesoporous material and a preparation method therefor. Through calcination modification of nitrate and modification of alkaline chitosan, and through the regulation of parameters such as a particle size and a specific surface area of the aluminosilicate, a concentration of a nitrate solution, a solid-to-liquid ratio of aluminosilicate particles to the nitrate solution, a calcination time, a calcination temperature, and a pH value, a mass fraction and a temperature of the chitosan solution, the modified aluminosilicate inorganic mesoporous material with a stable specific surface area ranging from 30 m2 / g to 40 m2 / g can be stably prepared. Moreover, the size of a pore channel inside the mesoporous material can be as small as sub-nanometer scale.

The application provides a method for high-selectivity adsorption of extremely low concentration NH3 by using alcohol amine ionic liquid microporous materials, and belongs to the technical field of gas separation and purification. In the method, the ionic liquid microporous material uses a mesoporous material as a carrier, and is modified by a multi-site alcohol amine ionic liquid to form a novel ionic adsorption material with selective adsorption NH3 sites and microporous structure. Since the proton hydrogen on the cation of the alcohol amine ionic liquid can form a hydrogen bond with NH3, and the material has a micropore effect, the material can efficiently capture NH3, especially has high selectivity at extremely low NH3 concentration, and the adsorbed NH3 can be completely desorbed by heating or reducing pressure, and the adsorbent has good circulation after regeneration, and still has a high adsorption capacity after ten cycles, thereby providing a new way for efficient purification and separation of NH3.

The application discloses a light reflection and enhancement film and an enhanced photovoltaic module with the same, the light reflection and enhancement film comprises a buffer layer and a substrate layer, the preparation raw materials of the buffer layer comprise an ethylene polymer, a mesoporous composite material, a filler and an additive, and the preparation raw materials of the substrate layer comprise a propylene polymer alloy, the mesoporous composite material, the filler and the additive. The light reflection and enhancement film and the enhanced photovoltaic module with the same have the advantages that the mesoporous material is compounded with the nanometer material to form the mesoporous composite material, and then the mesoporous composite material is used for preparing the buffer layer and the substrate layer, so that the reflectivity of the ultraviolet region of 330-380 nm, the adhesion between the buffer layer and the battery and the adhesion between the substrate layer and the adhesive film are improved, the light reflection and enhancement film is applied to the gap position between the battery pieces on the photovoltaic battery, the battery hidden crack and the fragments can be avoided, and the module power can be greatly improved compared with the application on the glass.

The application provides a solid base catalyst and a preparation method and application thereof, and belongs to the field of heavy oil non-hydrogen reduction viscosity cracking catalysts. The solid base catalyst is composed of modified mesoporous materials, active metals, auxiliary metals and clay, and is applied in heavy oil catalytic conversion reaction. In the preparation method, a metal doping-dissolution process is innovatively adopted on the mesoporous material gel to construct a large number of defect sites, and under the action of an activation auxiliary and mechanical external force, the active gel is secondary sol-gelized, and has the dual functions of stabilizing the mesoporous material and the binder. Therefore, the traditional binder is not needed, the proportion of the mesoporous material can be greatly adjusted, and the pore structure of the mesoporous material is maximally reserved. The specific surface area of the solid base catalyst prepared by the method of the application is still not less than 270 m 2 / g after hydrothermal treatment at 800 DEG C for 17 hours. When the vacuum residue is treated, the heavy oil conversion rate is increased by more than 5 percentage points, the dry gas yield is reduced by more than 1 percentage point, and the coke yield is reduced by more than 5 percentage points.

Disclosed are a sphere-like super-macroporous mesoporous material, a polyolefin catalyst, and a preparation method therefor and an olefin polymerization process. The sphere-like super-macroporous mesoporous material has a two-dimensional hexagonal ordered pore channel structure. The mesoporous material has an average pore size of 10 nm to 15 nm, a specific surface area of 300 m2 / g to 400 m2 / g, and an average particle size of 1 μm to 3 μm, based on the total mass of the mesoporous material. The mass content of water in the mesoporous material is <1 ppm. The mass content of oxygen in the mesoporous material is <1 ppm. When a polyolefin catalyst prepared with the mesoporous material as a carrier is used for an olefin polymerization reaction, a polyolefin product with a narrow molecular weight distribution and a good melt index can be obtained.

The present application relates to the technical field of industrial solid waste utilization, and discloses a synthesis method of smelting fly ash-based mesoporous material, which uses smelting fly ash as a main raw material, uniformly mixes sodium carbonate and smelting fly ash at a specific ratio, and calcines at a suitable temperature, so as to destroy the difficult-to-dissolve glass phase and mullite phase in the smelting fly ash, make the smelting fly ash form a low-carbon cerchi stone phase which is easy to react with acid, and react with low-concentration hydrochloric acid, so as to prepare a mesoporous material with large specific surface area and pore volume and concentrated pore size distribution. The specific surface area of the best sample in the present application is 567.45 m2 / g, the pore volume is 0.95 cm3 / g, the most probable pore diameter is 18.30 nm, the Si / Al ratio is 3.65, and the yield is 44.59%. The preparation process of the method is simple, does not need to use expensive template agents, has high implementability and production safety in actual production, and realizes high-value utilization of smelting fly ash.

The application provides a permeable reaction wall filling material and a preparation method and application thereof. The permeable reaction wall filling material provided by the application comprises a first molecular sieve, a second molecular sieve, a metal oxide, a mesoporous material and a binder, the silicon-aluminum ratio of the first molecular sieve is greater than or equal to 200, and the silicon-aluminum ratio of the second molecular sieve is 5-80. The permeable reaction wall filling material of the application comprises two molecular sieves with different silicon-aluminum ratios and a metal oxide, can effectively combine the principles of adsorption and oxidation, is applied in the treatment of soil and groundwater, has good treatment performance on low-concentration organic pollutants in water, and has excellent regeneration performance.

The invention provides a preparation method of a mesoporous MOFs (Metal-Organic Frameworks) material with water-acid dual stability and application of the mesoporous MOFs material in high-value conversion of grease. The preparation method comprises the following steps: firstly, preparing a mesoporous MOFs material of which the average pore size is greater than 10nm by a lauryl sodium sulfate mediated soft template method, and then dissociating an outer layer by using sodium citrate to increase the outer specific surface area of the outer layer, so as to obtain the mesoporous MOFs material (Meso-MIL-88A) with water-acid dual stability. The adsorption isotherm of the Meso-MIL-88A accords with a Langmuir model, the adsorption of macromolecular lipase belongs to single-molecule adsorption, and the defect that the specific enzyme activity is reduced due to enzyme accumulation caused by the fact that a macroporous material serves as an enzyme immobilization carrier is fundamentally avoided. The Meso-MIL-88A can be used for efficiently immobilizing lipase and synthesizing structural phospholipids, and has a good application prospect in the field of lipase-mediated grease high-valued treatment.

This invention discloses a flame-retardant mesoporous thermal insulation coating and its preparation method, relating to the field of coating technology. S1: Prepare a polyurethane-acrylic emulsion; S2: Mix mesoporous material, dispersant, anhydrous ethanol, and deionized water to obtain a mesoporous slurry; S3: Prepare melamine-modified ammonium polyphosphate; S4: Mix hollow microspheres, ethanol, and deionized water, and ultrasonically disperse; add the mesoporous slurry, dipentaerythritol, melamine, melamine-modified ammonium polyphosphate, and dispersant, grind, add the polyurethane-acrylic emulsion and additives, and disperse at medium speed to obtain the flame-retardant mesoporous thermal insulation coating. By designing and optimizing the components, the prepared flame-retardant mesoporous thermal insulation coating, after curing, forms a coating with excellent flame retardancy, thermal insulation, and mechanical properties.

The invention provides an amino-modified organic silicon material as well as a preparation method and application thereof, and belongs to the technical field of mesoporous materials. According to the preparation method, an inorganic silicon source and dialkoxysilyl ethane are used as organic silicon sources, aminopropyl triethoxy silane, aminopropyl trimethoxy silane or aminoethyl aminopropyl trimethoxy silane are used as organic modifiers, and the amino modified organic silicon material is prepared through a hydrolysis-polycondensation reaction under the alkaline condition. By means of the bridging effect of the dialkoxy silyl ethane, the dialkoxy silyl ethane and an inorganic silicon source are covalently integrated to form an organic-inorganic interpenetrating hybrid network with hardness and softness, compared with conventional modified organic silicon of a siloxane network with-Si-O-Si-as a main chain, the modified organic silicon is less prone to agglomeration, and the prepared amino-modified organic silicon material is spherical, uniform in distribution and good in stability. When the adsorbent is applied to an adsorption experiment of a Congo red solution, the adsorption capacity is as high as 92.0%, and the adsorption capacity is as high as 229.9 mg.

This invention discloses an iron-based denitration catalyst, a supported Fe2O3 denitration catalyst prepared using KIT-6 mesoporous material as a carrier. The KIT-6 mesoporous material is prepared by the following method: a poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer is dissolved in deionized water, concentrated hydrochloric acid and n-butanol are added, and the mixture is stirred at 35°C to form a transparent solution; then, tetraethyl orthosilicate is slowly added dropwise under vigorous stirring, and the mixture is stirred and hydrolyzed at 35°C for 24 h. The resulting suspension is transferred to a hydrothermal reactor and aged at 130–150°C for 24 h. The resulting precipitate is filtered, washed with deionized water and anhydrous ethanol to obtain a white solid, which is then heated in a muffle furnace at a heating rate of 1... o The KIT-6 catalyst was obtained by calcining at 550°C for 5 h in flowing air at a constant temperature (C / min). This invention achieves pore size regulation of KIT-6 by controlling the hydrothermal reaction temperature, and the catalyst prepared using it as a support exhibits excellent denitrification performance.

The invention provides a method for efficiently treating peculiar smell substances in a water body of an aquatic bird inhabiting water area in a wild animal park, and belongs to the technical field of water treatment deodorization. The method comprises stock processing and shift processing. Wherein the stock treatment method comprises the following steps: in bird pond treatment, a wave cracking nano mesoporous material is spread to improve a bottom mud habitat, meanwhile, a wooden tray is used as a basis, a bagged adsorption material is bound, and a nano biological reaction field is constructed. The displacement treatment method comprises the following steps: constructing an ecological diversion canal near a water area for inhabiting aquatic birds, constructing an artificial wetland by taking a wave splitting nano mesoporous material as a matrix in the ecological diversion canal and assisting with emergent aquatic plants, degrading peculiar smell substances and improving water quality, and then returning to the main bird pool. The method disclosed by the invention has the capabilities of keeping stable and long-acting peculiar smell removal and improving water quality.

The invention relates to the technical field of industrial solid waste utilization, and discloses a synthesis method of a smelting fly ash-based mesoporous material.The smelting fly ash is used as a main raw material, sodium carbonate and the smelting fly ash are evenly mixed according to a specific proportion and calcined at a proper temperature, insoluble glass phases and mullite phases in the smelting fly ash are destroyed, and the smelting fly ash-based mesoporous material is obtained. A low-kali-resistant footstone phase easy to react with acid is formed and reacts with low-concentration hydrochloric acid, and the mesoporous material with large specific surface area and pore volume and concentrated pore size distribution can be prepared. The specific surface area of an optimal sample is 567.45 m < 2 > / g, the pore volume is 0.95 cm < 3 > / g, the most probable pore diameter is 18.30 nm, the Si / Al ratio is 3.65, and the yield is 44.59%. The method is simple in preparation process, does not need to use an expensive template agent, has relatively high implementability and production safety in actual production, and is used for realizing high value-added utilization of the smelting fly ash.

A mixed metal oxide nanocomposite comprises magnesium, titanium, boron, and oxygen. The nanocomposite comprises a first phase of magnesium titanium oxide (MgTi2O5) and a second phase of magnesium borate (Mg3B2O6). The first phase and the second phase are present as a homogeneous mixture within the nanocomposite and exhibit an orthorhombic crystal system. The nanocomposite is mesoporous with a mean pore diameter of 5 to 10 nm.

The invention discloses a modified fly ash ceramsite proppant and a preparation method thereof, and a combined proppant and a preparation method and application thereof, and relates to the technical field of shale oil and gas fracturing. The modified fly ash ceramsite proppant comprises the following components which are mixed and granulated: fly ash, bauxite, barite powder, a recycled molecular sieve, a recycled mesoporous material, optional calcite powder and optional bentonite. The environment-friendly propping agent disclosed by the invention solves the problems of high production cost and application cost of the fracturing propping agent taking aluminum-containing minerals as main raw materials, and takes the harmless treatment of recyclable resources and industrial wastes in the whole industrial chain of the petrochemical industry into consideration, and the industrial wastes of the downstream of the oil refining and chemical industry are applied to the upstream petroleum fracturing propping agent.

The invention provides a preparation method and application of a mesoporous material Ce / Ti-UiO-66-NH2, and the preparation method comprises the following steps: 1) mixing a certain amount of template agent, ceric ammonium nitrate, terephthalic acid, TMB, acetic acid and sodium perchlorate, dissolving in deionized water, and reacting to obtain Ce-UiO-66; (2) adding a certain amount of tetrabutyl titanate into a N, N-dimethylformamide solution containing Ce-UiO-66, and carrying out hydrothermal reaction, so as to obtain a Ce / Ti-UiO-66 solid; and (3) carrying out ultrasonic treatment on a certain amount of 2-aminoterephthalic acid and the Ce / Ti-UiO-66 solid in a methanol solution to obtain a Ce / Ti-UiO-66-NH2 solid. According to the method, simple and convenient synthesis of mesoporous Ce-UiO-66 can be achieved, the problem that in the prior art, a mesoporous Ce-UiO-66 synthesis method is difficult is solved, the metal titanium ion-doped and amino-loaded Ce / Ti-UiO-66-NH2 mesoporous material is prepared, and meanwhile, a new material is provided for the fields of photocatalysis and the like.

The invention discloses a preparation method and application of a functionalized mesoporous material SBA-15, and relates to the field of chemical synthesis and photoelectrocatalysis materials.Organic functionalization is conducted on SBA-15 through a grafting method, and an amino-functionalized mesoporous material NH2-SBA-15 is obtained; and carrying out salicylaldehyde functionalization treatment on the amino functionalized mesoporous material NH2-SBA-15, so as to obtain the salicylaldehyde functionalized mesoporous material S-SBA-15. The functionalized mesoporous material NH2-SBA-15 and the functionalized mesoporous material S-SBA-15 can be used for photoelectrocatalytic reduction of CO2, and have good photoelectrocatalytic activity and stability.

The invention discloses a preparation method and application of a Ni2P-loaded rare earth doped nickel-based micro-mesoporous material, and the method comprises the following steps: jointly dissolving hypophosphite, nickel salt and rare earth metal salt in a solvent for hydrothermal reaction, cleaning, drying and grinding the product to obtain rare earth metal doped nickel phosphite with a micro-mesoporous structure, and drying to obtain the Ni2P-loaded rare earth doped nickel-based micro-mesoporous material. And under the protection of inert atmosphere, co-calcining the Re-NiPO and phosphite in a non-mixing manner, and carrying out phosphating reaction to form nickel phosphide particles on the surface and in pores of the Re-NiPO, thereby obtaining the Ni2P-loaded rare earth doped nickel-based micro-mesoporous material. A series of Ni2P-coated Re-NiPO (Re = La, Ce, Sm) heterojunction materials are prepared through a hydrothermal-phosphating method, and the hard magnetic property and the catalytic activity can be improved at the same time.

The application discloses a preparation method of alpha-tuliketone, relates to organic synthesis technology utilization, and the preparation is that 4,8-dimethyl-3,7-nonadiene-2-ketone and triacetal are subjected to aldol condensation reaction under the action of acid-base bifunctional catalyst to generate alpha-tuliketone; the acid-base bifunctional catalyst is obtained by grafting organic base onto carboxylic acid functionalized mesoporous material.The acid-base bifunctional catalyst is simple in preparation, good in stability and reusable, is used for catalyzing the reaction of 4,8-dimethyl-3,7-nonadiene-2-ketone and triacetal, can directly generate target product alpha-tuliketone by one-pot method, is high in reaction activity, short in reaction period, simple in post-treatment, simplifies process, is high in yield, and the yield can reach more than 95%.

This invention discloses a method for preparing a DCPD / PEI / SiO2-CuS photothermal multifunctional film layer on the surface of an additively manufactured NiTi alloy, and the additively manufactured NiTi alloy prepared by this method, relating to the field of surface modification technology for medical materials. The method includes: depositing a DCPD film layer on the surface of an alloy substrate; ultrasonically mixing mesoporous SiO2 material in a mixed solution of anhydrous ethanol and deionized water, adding CuS powder for dispersion, centrifuging, washing, drying, and heat treatment to obtain a SiO2-CuS modified material; dissolving PEI in dimethylacetamide, uniformly dispersing the SiO2-CuS modified material therein to obtain an extraction solution; then immersing and pulling the NiTi alloy with the deposited DCPD film layer in the extraction solution to complete the coating of the photothermal multifunctional film layer on the NiTi alloy surface. This invention successfully improves the corrosion resistance and biocompatibility of the NiTi alloy substrate and endows its surface with highly efficient photothermal antibacterial properties.

The utility model discloses a kind of mesoporous material valve heat preservation sleeve, including heat preservation sleeve;The inside of heat preservation sleeve top end is provided with mounting groove, and the side of heat preservation sleeve is provided with auxiliary structure;Auxiliary structure includes heat preservation layer, and the side of heat preservation sleeve is installed with heat preservation layer, the side of heat preservation layer is installed with connecting layer, and the side of connecting layer is installed with color change layer.The utility model is provided with auxiliary structure, to make heat preservation sleeve better in the process of use performance, therefore the material of heat preservation layer is mesoporous heat-insulating felt, mesoporous heat-insulating felt has very low thermal conductivity due to the existence of a large number of mesopores, and excellent heat preservation performance, simultaneously due to the water-repellent characteristics of mesoporous heat-insulating felt, this makes heat preservation sleeve not absorb internal and external moisture from rainwater, condensed water etc. In use, thereby eliminating the problem of long-term use performance reduction of heat preservation sleeve, so that mesoporous heat-insulating felt has fireproof and waterproof characteristics while having extremely high heat insulation performance, thereby completing the work of fireproof and waterproof heat insulation.

The invention provides a preparation method and application of a bimetallic-based Prussian blue analogue-lignin aerogel composite material. According to the bimetal-based Prussian blue analogue-lignin aerogel composite material prepared by the preparation method disclosed by the invention, bimetal-based Prussian blue analogues are uniformly dispersed, and the bimetal-based Prussian blue analogues are wrapped by lignin to form an intercommunicated structure and form a porous structure; and the electrode material has higher specific surface area and wettability with an aqueous solution. Specifically, a quick freezing method is utilized, the bimetallic-based prussian blue analogue is wrapped in lignin, agglomeration of the prussian blue analogue is avoided, the bimetallic-based prussian blue analogue is uniformly dispersed through the specific cohesiveness, dispersity and chelating property of the lignin, and a mutually communicated structure is formed, so that the bioactivity of the lignin is improved, and the bioactivity of the lignin is improved. The solvent is removed in a freeze-drying manner, so that a loose and porous mesoporous material can be obtained, more active sites can be obtained, ion adsorption can be effectively performed, and the method has a good application prospect in the field of capacitive deionization.

The invention relates to the technical field of catalysts for preparing olefin polymers, and discloses a catalyst, a preparation method thereof and an application of the catalyst in an ethylene polymerization reaction, a carrier is a clay sepiolite mesoporous material carrier, active components are a magnesium component and a titanium component, the average particle diameter of the carrier is 20-50 microns, and the average particle diameter of the carrier is 20-50 microns. The specific surface area is 150-600 m < 2 > / g, the pore volume is 0.5-1.5 ml / g, and the most probable pore diameters are 2-4 nm, 5-15 nm and 10-40 nm respectively. The catalyst has high catalytic activity when being used for ethylene homopolymerization or copolymerization, the bulk density of the prepared polymer is high, the melt flow ratio of the prepared polymer is small, and the molecular weight distribution of the reflected polymer is narrow.

The present disclosure belongs to the field of battery materials. The present disclosure provides a kind of iron phosphate and its preparation method and use, the preparation method is obtained by preparing precursor solution with iron source, phosphate source, amide substance and first solvent, and is filled in mesoporous material, forms filling body, then adds second solvent which is not mutually soluble with first solvent and different in density, and the precursor solution is sealed in the cavity or channel inside mesoporous material by using second solvent to wrap filling body, mesoporous material produces blocking and limiting effect, so that the precursor solution in cavity or channel can generate iron phosphate particles smaller than cavity volume after reaction, and after removing mesoporous material by calcination, discrete small particle size iron phosphate particles can be obtained.

A method of preparing a mesoporous Y zeolite catalyst having a larger mesoporous size is provided. The method uses a swelling agent, and optionally a co-solvent. And the mass transfer accessibility of large-volume reactants is improved by virtue of relatively large mesopores. In this preparation, a swelling agent is used in combination with cetyltrimethylammonium bromide (CTAB). A co-solvent can also be used to influence the strong swelling effect.

The invention provides a perovskite quantum dot for constructing a lead-containing hydroxide passivation layer in a mesoporous material. The perovskite quantum dot comprises the following components in parts by weight: 30-50 parts of mesoporous material; 4-8 parts of a hole blocking agent; 42 to 60 parts of a perovskite nanocrystal; the balance of a lead-containing hydroxide passivation layer; the hole plugging agent is a metal oxide; the perovskite nanocrystal is of an ABX3 structure; wherein A is selected from at least one of Cs < + > and CH3NH3 < + >, B is Pb, and X is at least one of Cl <->, Br <-> or I <->. According to the invention, trace water is adjusted in the pore channels of the mesoporous material, so that the perovskite quantum dots PLQY and the stability are improved.

The application provides a mesoporous composite material and a preparation method and application thereof, and the preparation method comprises the following steps: (1) mixing a rare earth metal salt, a mesoporous material and a solvent, and performing solid-liquid separation after stirring to obtain a solid mixture; (2) mixing the solid mixture with a phosphoric acid source solution, and obtaining the mesoporous composite material after reaction. The mesoporous composite material has the advantages of high adsorption efficiency, strong selectivity and an environmentally-friendly preparation method, and can be widely used in the treatment of lead-containing wastewater.