191 results about "Europium" patented technology

The invention provides a samarium / europium / gadolinium-containing zirconium hydride block as well as a preparation method and application thereof, and relates to the technical field of radiation shielding materials. The zirconium hydride block containing samarium / europium / gadolinium comprises the following elements in percentage by mass: 95% < = Zr < = 99.5%, 0% < = Gd < = 5%, 0% < = Sm < = 5%, 0% < = Eu < = 5% and 0% lt. Gd + Sm + Eu < = 5%. The preparation method comprises the following steps: respectively hydrogenating sponge zirconium, metal gadolinium, metal europium and metal samarium to respectively obtain corresponding hydride powder; weighing zirconium hydride powder, gadolinium hydride powder, europium hydride powder and samarium hydride powder according to a required proportion, and uniformly mixing under a protective atmosphere; and carrying out pressure sintering on the mixed powder, and carrying out secondary hydrogenation to obtain the zirconium hydride block containing samarium / europium / gadolinium. According to the invention, the absorption of the material to low-energy-segment neutrons can be obviously improved; and the preparation of the zirconium hydride block containing samarium / europium / gadolinium and the accurate regulation and control of doped elements are realized.

The invention discloses a triiodothyronine dissociation agent, a detection kit, a preparation method of the triiodothyronine dissociation agent and application of the triiodothyronine dissociation agent and the detection kit, and the triiodothyronine dissociation agent comprises 10-100 mM of acetic acid-sodium acetate buffer solution, 0.05-1 g / L of ethylene diamine tetraacetic acid disodium salt, 1-10 g / L of perfluoroalkyl ethyl methacrylate, 0.2-1 mL / L of Tween-20 and 0.2-2 mL / L of ProClin 300, the pH (Potential of Hydrogen) of the triiodothyronine dissociation agent is 5.5 + / -1; the kit comprises a triiodothyronine dissociation agent and a reagent strip. According to the present invention, the two sites can be specifically recognized, the sensitivity and the specificity are high, the high-specificity detection on the specific antigen can be achieved, and the low-end sensitivity is high; meanwhile, the interference problem of rare earth europium during detection of triiodothyronine can be solved, and the accuracy of a detection result is further improved.

The invention provides a doped yttrium hydride neutron moderation material and a preparation method and application thereof, and belongs to the technical field of radiation shielding materials. At least one of samarium, europium and gadolinium is doped in yttrium hydride in the form of hydride, and the mass ratio of metal yttrium to metal gadolinium to metal europium to metal samarium is controlled, so that the neutron moderation effect of the neutron moderation material can be improved. According to the invention, at least one of gadolinium hydride, europium hydride and samarium hydride is mixed with yttrium hydride under the protective atmosphere, so that the mass content of each element in the doped yttrium hydride neutron moderation material can be accurately controlled. According to the invention, the mixture is sintered and molded, and the sintering parameters of sintering and molding are controlled, so that the components of the mixture are sintered in a compact state, cracks generated by thermal expansion and cold contraction can be reduced, and the doped yttrium hydride keeps high density and has fewer cracks and defects.

The invention relates to a lanthanide oxide electrochemiluminescence aptamer sensor with dual signal amplification for detecting acetamiprid as well as a preparation method and application of the lanthanide oxide electrochemiluminescence aptamer sensor. According to the sensor, terbium-doped europium oxide (Eu2O3: Tb < 3 + >) modified by gold nanoparticles (Au NPs) is used as a luminous body, and the electrochemical luminescence performance can be remarkably improved through multiple mechanisms: on one hand, the Au NPs can effectively promote generation of more sulfate free radicals; on the other hand, the surface defect passivation effect and the efficient synergistic effect of energy transfer jointly achieve effective amplification of signals. In addition, the wool ball-shaped Ag NPs is used as a plasma resonance signal amplification source, so that the ECL intensity of the sensor is further enhanced. The prepared electrochemical luminescence sensor with the dual signal amplification effect is used for detecting acetamiprid (ACE), has a wide linear range and a low detection limit, and has a wide application prospect in detection of acetamiprid residues in a water environment.

The application discloses a preparation method of a customized porous TMJ prosthesis deposited with europium-doped black phosphorus nanosheets, and comprises the following steps: S1, CBCT is used to shoot medical image data, which is imported into Mimics software to reconstruct a model, the reconstructed model is imported into Geomagic software to simulate bone cutting, and a craniofacial model STL file is obtained; S2, TMJ prosthesis customization design is performed on the craniofacial model STL file; S3, SLM printing technology is adopted to perform 3D printing on the customized TMJ prosthesis model, and a prosthesis entity is obtained; and S4, a polydopamine europium-doped black phosphorus nanosheet surface coating is constructed on the porous region of the prosthesis entity model. The application realizes product customization by adopting computer-aided design and three-dimensional printing technology; the europium-doped black phosphorus nanosheet coating is constructed on the porous region of the prosthesis, the mandibular stump and the buccal region are promoted to grow into bone, the traditional "two-dimensional fixation" is changed into "three-dimensional fixation", and the limitation of screw loosening, falling off and bone resorption is got rid of.

This invention belongs to the field of gas sensor technology and discloses a method for preparing europium ferrite nanosensors and their applications. This method utilizes electrospinning technology combined with a specific low-temperature confined-domain calcination process (550℃~700℃) to prepare EuFeO3 nanotubes with a hollow structure and rough surface by taking advantage of the thermal decomposition kinetics differences of poly(p-v) magnets (PVP). This process effectively suppresses excessive repair of lattice oxygen while forming a unique tubular morphology, effectively "freezing" oxygen vacancies (O2) accounting for up to 34.44% on the material surface in situ. v This invention addresses the shortcomings of traditional solid fiber materials by constructing a sensor using a grinding, dispersion, and coating process. Utilizing the dual reactive surfaces of hollow nanotubes and high-concentration oxygen vacancy active sites, it achieves highly sensitive and selective detection of low-concentration ethylene gas released during fruit ripening. This invention solves the problems of small specific surface area and insufficient active sites in traditional solid fiber materials.

This invention discloses a method for preparing diamond rare-earth europium (EEUR) color core particles, belonging to the field of non-metallic element materials. The method involves coating a europium oxide suspension onto a single polished silicon wafer, followed by microwave plasma chemical vapor deposition (CPCVD) to form EEUR color core particles. This method allows for the growth of EEUR color core particles on the surface of a diamond film. The absence of obvious traces of Eu₂O₃ nanoparticles on the surface of the EEUR color core particles indicates that the diamond implantation solution within the europium oxide particles rapidly forms the EEUR color core particles during CPCVD, resulting in the diamond core ultimately covering the europium oxide particles, thus forming a core-shell structure, i.e., the diamond rare-earth europium color core particles. The obtained EEUR color core particles are mostly irregularly shaped with a diameter of approximately 8 μm.

This invention discloses a NiAlEu-LDHs photocatalyst, its preparation method, and its application in catalytic CO2 synthesis of syngas, belonging to the field of catalyst preparation technology. The NiAlEu-LDHs photocatalyst is a europium-doped layered double hydroxide prepared by a hydrothermal reaction using nickel, aluminum, and europium sources, possessing a multi-level nanoflower-like structure assembled from nanosheets. The preparation method includes the following steps: a one-step hydrothermal method is used to dissolve the nickel, aluminum, and europium sources, along with urea and ammonium fluoride, in deionized water; the solution is then transferred to a polytetrafluoroethylene-lined autoclave for hydrothermal reaction. This invention introduces europium through a one-step hydrothermal method, constructing a europium-doped nanoflower-like NiAlEu-LDHs photocatalyst. In production applications, this invention's preparation method is simple and novel, with low synthesis cost, easy mass production, and significant application value.

This invention discloses a bioactive glass and its preparation method, belonging to the field of bioactive glass technology. It aims to solve the problems of insufficient synergistic effect between antibacterial efficacy and bone-promoting activity in existing materials, as well as the inability to monitor in vivo degradation processes in real time. The bioactive glass comprises 44-48 parts silica; 22-27 parts calcium oxide; 22-27 parts sodium oxide; 5-7 parts phosphorus pentoxide; 2-4 parts europium zinc complex; 10-20 parts chitosan; 1-5 parts lidocaine; and 2-5 parts dilute acetic acid solution. The addition of the europium zinc complex promotes bone formation and enhances antibacterial activity, achieving a highly efficient synergy between anti-infection and tissue regeneration. Simultaneously, it provides optical tracking capabilities, allowing for non-destructive real-time monitoring of the material's degradation behavior and tissue integration in vivo via fluorescence imaging. This invention offers superior material performance and a simple preparation process, providing an innovative solution for the repair of infected bone defects.

The invention relates to the field of combined application of MOF (Metal Organic Framework) crystal material synthesis and a sonodynamic antibacterial technology, in particular to an Eu-TCPP-SO4 crystal as well as a preparation method and application thereof. The rare earth-porphyrin complex Eu-TCPP-SO4 crystal with a specific crystal structure is constructed by virtue of coordination and self-assembly of europium nitrate pentahydrate, meso-tetra (4-carboxyl phenyl) porphyrin (TCPP) and sulfate ions. The Eu-TCPP-SO4 crystal disclosed by the invention as a sound-sensitive agent has high sound-sensitive activity and good stability, overcomes the limitations of low efficiency and poor stability of the sound-sensitive agent in the prior art, and can provide a safer and more effective solution for actual antibacterial application.

A europium-doped β-sialon phosphor particle. When the element concentration of a Si atom on the surface portion of the particle that is obtained by analyzing a cross section of the phosphor particle by the energy dispersive X-ray analysis method is indicated by Ps [at %], and the element concentration of a Si atom near the center of the particle that is obtained by an analysis by the same method is indicated by Pc [at %], the Pc-Ps value is 3 at % or more.

The invention discloses a composite bone repair material as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. The composite bone repair material comprises an etched cobalt magnesium europium molybdenum hydrotalcite nanosheet, calcium peroxide nanoparticles and an akermanite scaffold, the calcium peroxide nano-particles are loaded on the etched cobalt magnesium europium molybdenum hydrotalcite nano-sheets and are marked as a-CoMgEuMo-LDH (at) CaO2, and the a-CoMgEuMo-LDH (at) CaO2 is attached to the surface of the akermanite bracket and is marked as a-CoMgEuMo-LDH (at) CaO2-AKT. The composite bone repair material disclosed by the invention shows strong active oxygen generation capability, anti-tumor efficacy and osteogenic activity, has excellent biological safety, integrates anti-tumor and bone repair, and has a wide prospect in related operations.

The invention relates to a novel functional material for X-ray protection, in particular to a liquid metal flexible shielding material and a preparation method and application thereof. The material comprises liquid metal and solid metal, the liquid metal serves as a solvent to be filled in gaps of the solid metal, the liquid metal is gallium, gallium indium, gallium indium tin, gallium indium tin zinc or mercury, and the solid metal is selected from one or more of indium, tin, gold, platinum, iridium, zirconium, niobium, molybdenum, ruthenium, osmium, rhenium, rhodium, tungsten, antimony, palladium, tantalum, hafnium, lutetium, lead, ytterbium, thulium, bismuth, silver, erbium, holmium, dysprosium, terbium, gadolinium, samarium, neodymium, lanthanum, praseodymium, cerium and europium. On the basis of compounding of the liquid metal solvent and the solid metal solute based on the liquid metal combinatology, the liquid metal and the solid metal are jointly used for protecting X-ray radiation, the comprehensive performance of X-ray protection is improved, and meanwhile the variety and number range of selectable metal elements is widened.

The application belongs to the technical field of polyurea coating and specifically relates to a single-component high-performance polyurea coating and a preparation method thereof.The single-component high-performance polyurea coating comprises the following raw materials in parts by weight: diisocyanate 60-100 parts, diluent 30-50 parts, polyether polyol 100-140 parts, leveling agent 0.3-0.5 parts, defoaming agent 0.6-1 part, silane coupling agent 30-50 parts, chain extender 30-35 parts, catalyst 3-5 parts, europium-doped molybdenum sulfide coated with tin phytate 10-20 parts, and Cu3P@ZIF-7 5-15 parts.In the application, the europium-doped molybdenum sulfide coated with tin phytate and Cu3P@ZIF-7 are added, the interaction of the above components is utilized, the flame retardation and mechanical properties of the polyurea coating are promoted, the performance is excellent, and the application range is wide.

The invention relates to an ethylene glycol regulated rare earth europium doped Sr2LaF7 nano material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, dissolving strontium chloride, lanthanum nitrate and europium nitrate in water to form a uniform solution; then adding ethylene glycol accounting for 20-70% of the volume of the deionized water, and regulating crystal growth by utilizing coordination of the ethylene glycol and metal ions; adding an ammonium fluoride or sodium fluoride solution, adjusting the pH value, and carrying out a hydrothermal reaction at 100-180 DEG C for 4-12 h; and finally, centrifuging, washing and drying to obtain a final product. Compared with the prior art, the morphology-controllable preparation of the Sr2LaF7 nano material is realized through directional regulation and control of ethylene glycol and a simple hydrothermal method, and the product has the advantages of high luminous intensity, uniform morphology and the like, and has an application prospect in the fields of fluorescence labeling and the like; the method is simple in process and low in cost.

The invention discloses a rare earth modified silicone rubber anti-radiation adhesive and a preparation method thereof, and the rare earth modified silicone rubber anti-radiation adhesive is prepared by mixing dealcoholized single-component room temperature vulcanized silicone rubber and an anti-radiation rare earth compound according to a ratio of 92-98 wt%: 2-8 wt%, the anti-radiation rare earth compound is prepared by mixing a mixed rare earth compound, deionized water and a composite rare earth coupling agent according to the mass ratio of 10: 90: 0.08, and the mixed rare earth compound is prepared by reacting raw materials including gadolinium chloride, samarium chloride, europium chloride, boric acid and deionized water. The neutron relative attenuation rate of the adhesive can reach 71-85%, the gamma ray relative attenuation rate of the adhesive can reach 88-95%, only microcracks appear on the surface after radiation, and the adhesive is easy to construct, can be used for aerospace circuit boards, equipment circuit boards in nuclear energy facilities and parts needing anti-radiation protection and the like, and has good practicability and popularization value.

A ceramic material, includes: a magnesium oxide and a doped oxide, wherein the doped oxide includes cobalt tetroxide, europium trioxide or manganese dioxide, and wherein a weight ratio of magnesium oxide to the doped oxide is 97:1 to 85:12. In addition, the disclosure also provides a method for manufacturing a ceramic material, including: mixing a magnesium oxide powder and a doped oxide powder, and sintering the mixed magnesium oxide powder and the doped oxide powder at a temperature of 1300° C. to 1650° C. to obtain the ceramic material, wherein the doped oxide powder includes a cobalt tetroxide powder, a europium trioxide powder or a manganese dioxide powder, and wherein a weight ratio of the magnesium oxide powder to the doped oxide powder is 99.9:0.1 to 92:8.

The present application relates to a kind of high radiation resistance of control rod for stack entropy rare earth zirconate ceramic material and its preparation method and application, belong to nuclear reactor neutron absorption rod material technical field.The control rod ceramic material provided by the present application is prepared by using europium oxide, dysprosium oxide, thulium oxide and zirconium oxide as raw materials, according to certain proportion, after ball milling, calcination, green body forming and green body sintering process, and then processing to obtain the middle entropy rare earth zirconate ceramic material that can be applied to control rod.The rare earth zirconate ceramic material has excellent radiation resistance, large neutron absorption cross section and low reactivity value loss, and has high density, excellent thermal conductivity and low thermal expansion coefficient, and shows good application prospect in the field of control rod materials.

A luminescent material is a complex with the following structural formula: wherein R and R' are independently selected from oxygen, amino, C1-C18 straight-chain or branched alkyl-substituted amino, phosphin, C1-C18 straight-chain or branched alkyl-substituted phosphin, sulfur, and selenium; R1, R2, R3, R4, R5, and R6 are independently selected from hydrogen, C1-C18 straight-chain or branched alkyl or halogen-substituted C1-C18 straight-chain or branched alkyl, aromatic... Aromatic groups such as benzene, thiophene, and furan, n = 1–3, are used to construct cyclic ligand skeletons with different half-ring numbers. Ln is one of the following: cerium trivalent ion, europium divalent ion, ytterbium divalent ion, and samarium divalent ion. M is one of the following: manganese divalent ion, cobalt trivalent ion, chromium trivalent ion, vanadium trivalent ion, and ferric trivalent ion. X is a monovalent ion, such as halogen, cyanide, thiocyanate, isothiocyanate, etc., m = 0–3, l = 3–6. X acts as a monodentate ligand or as a bridging bidentate ligand.

The invention discloses an Eu / Mo co-doped Mn2O3 (at) Na2Mn8O16 (at) MnCO3 composite material and a preparation method thereof, and belongs to the field of inorganic materials. The preparation method comprises the following steps: adding europium nitrate hexahydrate, a manganese nitrate solution, urea and sodium molybdate into purified water for dissolving, and carrying out constant-temperature reaction in a hydrothermal reaction kettle; after the reaction is finished, filtering, putting a precursor into a drying oven, drying, re-dispersing the precursor into deionized water, adding urea and manganese sulfate monohydrate, uniformly dispersing, performing hydrothermal reaction again, cooling to room temperature, washing precipitate with water, calcining in a muffle furnace, and cooling to obtain the Eu / Mo co-doped Mn2O3 (at) Na2Mn8O16 (at) MnCO3 composite material. According to the preparation method, the electrochemical performance of the composite material is improved through two-step hydrothermal treatment, cubic and conjoined sphere shapes with burrs are observed microcosmically, and the structure endows the material with an interconnected conductive network, a roughened high-activity surface and a more stable overall structure.

An europium activating β-type sialon phosphor contains at least one kind of element selected from the group made of yttrium, titanium, and gadolinium, wherein the total content of the at least one kind of element is more than 0 ppm and less than 1000 ppm.

The invention relates to the technical field of barium titanate-based ceramic preparation, in particular to a rare earth ion doped barium titanate-based ceramic material and a preparation method thereof.High-purity tetragonal-phase barium titanate is prepared through a hydrothermal synthesis process, doped ions comprise two rare earth ion elements including europium and dysprosium, and one or more of sodium, magnesium, bismuth, niobium, cobalt, lanthanum and the like are cooperatively doped; barium titanate powder and ion-doped oxide powder are mixed according to a certain proportion, and the ion-doped barium titanate ceramic is prepared through solid-phase sintering. By adopting the formula and the preparation method disclosed by the invention, a barium titanate-based ceramic capacitor product with excellent dielectric property, high stability and low loss can be obtained, and the preparation method is suitable for preparing a high-temperature and high-performance multilayer ceramic capacitor.

Europium doped tin perovskites useful in the fabrication of optoelectronic devices exhibiting improved stability and high-power conversion efficiencies and perovskite precursor solutions used to prepare the europium doped tin perovskite, wherein the europium doped tin perovskite can be represented by Formula 1:(A+)(Sn2+)(X−)3·m[(Eu2+)(Y−)2]  1wherein m is 0.001-0.05;X− for each instance is independently F−, Cl−, Br−, or I−;Y− for each instance is independently F−, Cl−, Br−, or I−; andA+ is Cs+, Rb+, CH3NH3+, CH3CH2NH3+, H(C═NH2)NH2+, Me(C═NH2)NH2+, or a mixture thereof.

The invention discloses a degradable flexible X-ray scintillator film and a closed-loop regeneration method thereof, and relates to the technical field of functional materials. In the scheme, palm modified cellulose ester is used as a film substrate, and europium-based organic scintillators are uniformly dispersed in the palm modified cellulose ester to form a flexible, hydrophobic and thermoplastic X-ray scintillator film; the material has excellent X-ray response performance, thermoplasticity, environmental stability and mechanical flexibility; the europium-based scintillator powder and the palm modified cellulose ester are separated through a solvent, and the palm modified cellulose ester has biodegradability; the prepared X-ray scintillator film solves the problems that a traditional scintillator is unrecyclable, high in rigidity, unfriendly to the environment and the like.

The application discloses a preparation method and application of a rare earth cluster scintillator, and the scintillator material is prepared from 4,7-diphenyl-1,10-phenanthroline, 4-tert-butyl benzoic acid, titanium tetraisopropoxide and europium(III) acetate by a solvothermal reaction. The rare earth cluster scintillator material Eu2Ti4 prepared in the application has excellent flexibility and can be used for flexible imaging of non-planar materials. The minimum detection limit of the obtained scintillator is 32.89 nGy s ‑1 , which is 167 times lower than a standard medical diagnostic dose. The rare earth cluster scintillator process is simple, has high yield and fast crystal growth. The limit resolution of the Eu2Ti4-PDMS scintillation screen in the application exceeds 31 LP mm ‑1 at different temperatures, and the scintillation screen has excellent high-resolution X-ray radiation imaging capability and can be used as an ideal visualization tool for high-performance radiation imaging in extreme environments.

The present invention relates to a phosphorus-rich nano sponge comprising a porous matrix having an average size of less than 1000 nm and stabilized with a surface-active agent wherein the porous matrix is held together by ionic linkages of one or more of transition metals selected from iron, copper, titanium, vanadium, nickel, cobalt, post transition metals selected from zinc, cadmium, aluminum, tin, lead, bismuth, alkaline earth metals selected from calcium, magnesium, barium and strontium, metalloids selected from silicon, boron and tellurium, alkali metals selected from potassium, sodium and lithium, lanthanides selected from cerium, gadolinium, europium, or mixed metals. The phosphorus-rich nano sponge is selectively enriched for sustained and targeted delivery of molecular payloads.

The invention relates to the technical field of marking adhesives, in particular to an aircraft high-temperature-resistant torque marking adhesive and a preparation method and application thereof.The aircraft high-temperature-resistant torque marking adhesive is prepared from, by mass, 50%-60% of Dynasyl SIVO 140, 1%-2% of magnesium lithium silicate, 2%-3% of hydrophilic vapor-phase silicon dioxide, 35%-41% of filler, 1%-2% of mildew preventive and 1%-2% of europium-doped silicate fluorescent powder. The water-based inorganic sol-gel resin DynasylanSIVO 140 based on a silane technology is used as an adhesive, can resist the high temperature of 1000 DEG C, does not crack, and can be cured at room temperature; meanwhile, europium-doped silicate fluorescent powder is added into the components of the marking glue, so that yellow-green fluorescence can be displayed under the irradiation of 365nm ultraviolet light, the visibility of tiny cracks is improved, and the detection sensitivity is improved; in addition, the airplane high-temperature-resistant torque marking adhesive is prepared according to the mass percent, can meet the technical index of the enterprise standard BMS8-45 of the Boeing company, and has high efficiency and reliability.

A rare-earth-doped aluminum-based composite material for shielding spent nuclear fuel comprises, by weight percentage: gadolinium oxide 1 wt.%–10 wt.%, europium oxide 1 wt.%–10 wt.%, samarium oxide 1 wt.%–10 wt.%, dysprosium oxide 1 wt.%–10 wt.%, erbium oxide 1 wt.%–10 wt.%, with the remainder being 6063 aluminum alloy powder. This invention exhibits excellent neutron absorption capacity. The aluminum-based material maintains both low weight and high strength and ductility. Furthermore, the addition of rare-earth elements such as Gd, Eu, and Sm, which have high thermal neutron absorption cross-sections, significantly enhances the material's neutron absorption capacity. The introduction of rare-earth elements such as Gd, which react with neutrons in an (n,γ) reaction, effectively prevents the formation of numerous helium bubbles in the matrix, thus improving the material's practical service life.

The invention discloses a carbon dot-polyacid ratio fluorescent probe for simultaneously detecting Pb < 2 + > and Cr < 6 + > and application of the carbon dot-polyacid ratio fluorescent probe. The polyacid composite carbon dot ratio fluorescent probe for detecting Pb < 2 + > and Cr < 6 + > ions in an environment is obtained by taking herba houttuyniae as a carbon source, L-cysteine as a doping agent and sodium decatungsten europium acid EuW10 as a modifier through direct one-pot hydrothermal treatment. The probe can be used for accurate analysis and detection of Pb < 2 + > and Cr < 6 + > ions in the environment, the detection limit of Pb < 2 + > can be as low as 3.4 nM, the detection limit of Cr < 6 + > can be as low as 14.78 nM, and the probe has high selectivity and anti-interference capability on the Pb < 2 + > and Cr < 6 + > ions, is obvious in color change, and can be simultaneously used for detection of three scenes in which the Pb < 2 + > and Cr < 6 + > ions independently exist or coexist at the same time in the environment. The method has the advantages of real-time, in-situ, visual and rapid detection, and is simple in synthesis method, environment-friendly, low in cost, easy to carry and good in detection effect.

The invention discloses a light-emitting probe based on a europium-based metal-organic framework and a preparation method and application thereof, and belongs to the technical field of fluorescent sensing materials and food safety detection.The light-emitting probe is a europium-based metal-organic framework material, the chemical formula of the light-emitting probe is Eu (phen) (5-hipa) NO3 <->, phen is 1, 10-phenanthroline ligand, 5-hipa is 5-hydroxyisophthalic acid ligand, and the molecular weight of the Eu (phen) (5-hipa) NO3 <-> is larger than that of Eu (phen) (5-hipa) NO3 <->. The light-emitting probe takes a binuclear Eu cluster as a metal center. According to the luminous probe based on the europium-based metal-organic framework, the synthesized europium-based metal-organic framework material can be used as a bifunctional fluorescent probe, and specific recognition and quantitative detection of carbaryl and enrofloxacin are realized in an aqueous solution; the method has the remarkable effects of high sensitivity, strong anti-interference capability, recyclability and simplicity, convenience and rapidness in operation.