693 results about "Lanthanide" patented technology

The invention provides a composite nanofiber membrane applied to detection of a C4F7N gas decomposition component C3F6, a preparation method of the composite nanofiber membrane and a sensing device. The composite nanofiber membrane comprises a polymer nanofiber substrate and a metal organic framework dispersed in the polymer nanofiber substrate, the metal organic framework is MIL-101 (M), and M represents a metal element and comprises at least one of Cr, Cu and lanthanide series metal elements; the surface of the interdigital electrode is coated with the composite nanofiber membrane, and the composite nanofiber membrane serves as a sensing device and is used for detecting C3F6 gas. The sensor disclosed by the embodiment of the invention can generate response within 25s, still has certain sensitivity (which is 3% or above) to 10ppm of C3F6 gas, and meets the requirements on high sensitivity and quick response in detection of a C4F7N gas decomposition product C3F6.

A solid electrolyte includes: LiaAbEc(SO4)dJeXfHh, A is selected from alkaline earth metals and alkali metals other than Li, E is selected from Al, Ga, In, Sc, Y, Ti, Zr, Hf, and lanthanides, J is selected from OH, BO2, BO3, BO4, B3O6, B4O7, CO3, NO3, AlO2, SiO3, SiO4, Si2O7, Si3O9, Si4O11, Si6O18, PO3, PO4, P2O7, P3O10, SO3, SO5, S2O3, S2O4, S2O5, S2O6, S2O7, S2O8, BF4, PF6, BOB, (COO)2, N, AlCl4, CF3SO3, CH3COO, CF3COO, OOC—(CH2)2—COO, OOC—CH2—COO, OOC—CH(OH)—CH(OH)—COO, OOC—CH(OH)—CH2—COO, C6H5SO3, OOC—CH═CH—COO, OOC—CH═CH—COO, C(OH)(CH2COOH)2COO, AsO4, BiO4, CrO4, MnO4, PtF6, PtCl6, PtBr6, PtI6, SbO4, SeO4, TeO4, HCOO, and O, X is selected from F, Cl, Br, and I, 0.5≤a<6, 0≤b<6,0<c<2,0.1<d≤6.0, 0<e≤6.0, 0<f≤6.1, and 0≤h≤0.2, and a peak is observed at a diffraction angle 2θ=22.3°±1.0° in an X-ray diffraction pattern in which Cu-Kα is used as a line source.

The invention relates to the field of molecular photoelectric devices, and provides a single photon source based on an up-conversion photoelectric device and a preparation method thereof, and the preparation method comprises the steps: preparing a dielectric layer; preparing a graphene array electrode on the dielectric layer; constructing a graphene nano gap point electrode pair; placing the graphene nano gap point electrode pair in a two-neck flask, adding 1-(3-dimethylaminopropyl)-3-2-ethylcarbodiimide hydrochloride and an up-conversion luminescent molecule A part into the two-neck flask, adding anhydrous pyridine into the two-neck flask in a nitrogen environment, and stirring to obtain a graphene nano gap point electrode pair; and putting the device connected with an up-conversion luminescent molecule part A at two ends and an up-conversion luminescent molecule part B containing lanthanide metal into a tetrahydrofuran solution for molecular system chelation to obtain the single-molecule up-conversion photoelectric device containing the chiral group. A liquid metal Ga2O3 protective layer is plated on a single-molecule up-conversion photoelectric device, so that a single photon source is obtained, and the stability and the anti-interference capability of the single photon source are enhanced.

A solid electrolyte material and a preparation method therefor, a solid electrolyte, a semi-solid electrolyte, a positive electrode, and a battery. The solid electrolyte material comprises a compound represented by the following general formula: Aa(M1bM2c)Xd, wherein A comprises one or more of Li, Na, K, Cu and Ag, X is halogen, M1 is a main element, M1 is selected from among one of Ga, Y, In, Mg, Sr, Sc, Al, Fe, Zr, Hf, Ta, Nb, W, Mn, Zn, Co, Mo, Sn, Ca, Pb, Ti, Ru and a lanthanide metal element, M2 is a doping element, M2 comprises one or more elements of groups IIA, IIB, IIIA, IIIB, IVA, IVB, VA and VB, b is greater than the molar ratio of any element in M2, 0.5≤a≤5, 0.2≤b≤2, 0.2≤c≤2, d=a*ε1+b*ε2+c*ε3, ε1 is the weighted average valence of A, ε2 is the weighted average valence of M1, and ε3 is the weighted average valence of M2.

The invention belongs to the technical field of battery materials, and particularly discloses preparation and application of a strontium lanthanum manganate-coated lithium ferric manganese phosphate composite material, and the method comprises the following steps: firstly, preparing strontium lanthanum manganate by adopting a lanthanum source, a strontium source and a manganese source as raw materials; respectively adding a lithium source, a phase transfer agent, a phosphorus source, L-ascorbic acid, an iron source and a manganese source into a solvent, and preparing a lithium ferric manganese phosphate precursor by using a solvothermal method; the lithium ferric manganese phosphate material is coated twice through strontium lanthanum manganate and carbon. According to the invention, strontium lanthanum manganate is used as a coating material, and the addition of lanthanide elements improves the crystal stability of lithium ferric manganese phosphate, keeps the integrity of an olivine-type structure, and avoids capacity fading caused by structure collapse, thereby improving the cycle stability of the lithium ion battery.

The invention discloses a rare earth antibacterial ceramic and a preparation method thereof, and belongs to the technical field of ceramic materials, the rare earth antibacterial ceramic comprises a base material, a rare earth antibacterial agent and an auxiliary additive, the base material is coated with a zirconium silicate coating layer; the matrix material is one of aluminum oxide or zirconium oxide, the rare earth antibacterial agent is a ternary composite oxide composed of at least three lanthanide elements, the lanthanide elements comprise Ce, Y, La and Nd, and the invention provides a preparation method of the composite material. Through collaborative innovation of ternary rare earth composite modification, zirconium silicate interface coating and a gradient sintering process, the core problems of single antibacterial spectrum, high-temperature failure and insufficient durability of traditional antibacterial ceramic are solved, and the antibacterial property, stability, biological safety and mechanical property are remarkably improved; and the method has clear technical progress and industrial application value.

The invention provides a seed layer for preparing a preferred orientation crystal film and the crystal film, lanthanide series metal salt is selected as an initial raw material of the seed layer, the initial raw material is adopted to prepare a solution, the prepared solution is filtered to obtain a seed layer solution, the seed layer solution is subjected to spin coating or ink jet printing on a substrate, and heat treatment is performed to obtain the seed layer. According to the seed layer for preparing the preferred orientation crystal film and the preferred orientation crystal film, the high-quality single crystal film is prepared under simple and convenient conditions, and the seed layer and the preferred orientation crystal film have wide application prospects in the fields of information storage, intelligent sensing, biomedical treatment, energy and the like.

A component for use in a semiconductor processing chamber is provided. A metal or metal alloy component body has a process-facing surface. An intermediate aluminum oxide coating is disposed on the process-facing surface, the intermediate aluminum oxide coating being at least 99% pure by weight and having a porosity of less than 0.1% by volume, the intermediate aluminum oxide coating having a first thickness. A process-exposed layer is disposed on the intermediate aluminum oxide coating, the process-exposed layer comprising at least one of yttrium, hafnium, zirconium, lanthanum, magnesium, and a lanthanide, the process-exposed layer being at least 99% pure by weight, having a porosity of less than 0.1%, and having a second thickness, the second thickness being less than or equal to the first thickness.

The invention discloses a phenyl ether bimetal organic framework antifouling material, a preparation method and application, and belongs to the technical field of marine antifouling materials. The preparation method comprises the following steps: 1) dissolving a carboxyl-containing phenyl ether organic ligand, a zinc salt and a lanthanide metal salt in a polar organic solvent, and carrying out a coordination reaction in a closed reaction container, so that zinc and lanthanide metal ions and carboxyl form coordinate bonds, and bridging the metal ions to form tetra-metal clusters; washing and drying crystals obtained after the reaction to obtain the phenyl ether-based bimetal organic framework; and 2) grinding the phenyl ether-based bimetal organic framework, uniformly dispersing the ground phenyl ether-based bimetal organic framework into the waterborne polyurethane resin, and fully mixing to obtain the phenyl ether-based bimetal organic framework antifouling material. The invention also provides an application of the antifouling material in marine antifouling and anticorrosion. The prepared antifouling material is low in synthesis cost and difficulty and stable in property, and has a remarkable inhibition effect on biological sedimentation of diatom, barnacle and the like.

The invention discloses a multi-element soil fertility improvement biological modifier and a preparation method thereof, and belongs to the technical field of soil fertility improvement. The modifier is prepared from modified straw aerogel, a strontium titanate loaded lignin compound, lanthanide modified potassium feldspar powder, alginic acid oligosaccharide composite gamma-aminobutyric acid, carbon nitride quantum dots, bacterial cellulose nanofibers and polyaniline nanotubes according to the mass ratio of (18-22): (15-17): (13-15): (7-10): (10-13): (3-5): (7-10): (10-13): (5-8). The composite microbial inoculant is composed of a nano zero-valent iron-montmorillonite compound and a nitrogen fixation-phosphate solubilizing composite microbial inoculant. The modified straw aerogel and the bacterial cellulose nanofibers are interwoven to form a three-dimensional network framework, a habitat is provided for soil microorganisms, the water and fertilizer retention capacity of soil is enhanced, and meanwhile, the network structure promotes transmission of nutrients and water in the soil and improves the nutrient utilization efficiency.

The invention relates to a lanthanide perovskite type oxide coated high-nickel ternary positive electrode material and a preparation method thereof. The positive electrode material is spherical-like particles formed by coating a high-nickel ternary positive electrode material with a lanthanide perovskite type oxide coating layer according to a mass ratio of (0.01-0.03): 1; the chemical formula of the lanthanide perovskite type oxide is LazCa1-zCoO3, and z is more than 0 and less than or equal to 1; the chemical formula of the high-nickel ternary positive electrode material is LiNixCoyMn (1-x-y) O2, x is greater than or equal to 0.80 and less than or equal to 0.96, y is greater than or equal to 0.01 and less than or equal to 0.10, and 1-x-y is greater than 0. The preparation method comprises the following steps: ball-milling and mixing the lanthanide perovskite type oxide and the high-nickel ternary positive electrode material, and sintering at low temperature in a protective atmosphere. The positive electrode material is high in lithium ion and electron conductivity in the charging and discharging process, high in reversibility, stable in structure and good in rate capability and cycling stability. The method is simple, low in cost and suitable for industrial production.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a catalytic filler, a preparation method and application of the catalytic filler to treatment of organic matters in high-salinity wastewater through electrochemistry and ozone. Wherein the catalytic filler is prepared from the following components in percentage by mass: 5-10% of a carbon-coated high-entropy perovskite composite material, 10-15% of a binder and the balance of a carbon-based carrier; the carbon-coated high-entropy perovskite composite material is formed by compounding lanthanide series high-entropy perovskite oxide and carbon microspheres. The invention also provides a method for treating organic matters in high-salinity wastewater by using the catalytic filler through electrochemistry in cooperation with ozone. The electrochemical reaction and the ozone reaction are combined, a conductive three-dimensional electrode network is constructed by utilizing the catalytic filler, the cathode plate and the anode plate, the synergistic effect of the electrochemical reduction reaction and the catalytic ozonation in the oxidation process is promoted, the degradation of intractable pollutants by the ozone under the assistance of electrochemistry is realized, and intractable organic pollutant molecules are better decomposed.

The invention discloses a cobaltosic oxide catalyst doped with lanthanide metal, a preparation method of the cobaltosic oxide catalyst and application of the cobaltosic oxide catalyst to ammonia production through nitrate reduction. The method comprises the following steps: carrying out hydrothermal reaction on cobalt nitrate hexahydrate and a lanthanide metal salt precursor in a mixed system of isopropanol and glycerol, and then carrying out high-temperature calcination to prepare the lanthanide metal-doped cobaltosic oxide catalyst. The preparation method disclosed by the invention is simple to operate and low in cost, the prepared lanthanide metal-doped cobaltosic oxide catalyst shows excellent Faraday efficiency, ammonia yield and cycling stability in an electro-catalysis nitrate reduction reaction, a traditional path of preparing ammonia from nitrate is broken through, and more efficient performance is realized.

The invention belongs to the technical field of nano material detection, and particularly discloses a method for detecting Cr (VI) by using a double-lanthanide metal organic framework Eu / Tb MOF ratio fluorescence sensor, which comprises the following steps: screening and preparing a lanthanide metal organic framework Eu / Tb MOF using 1, 3, 5-dicarboxyphenylboronic acid as a ligand; and 2, detecting Cr (VI) by using an Eu / Tb MOF ratio fluorescence sensor. The Cr (VI) enables the fluorescence absorption peak of the Eu / Tb MOF to be quenched at 545nm and the fluorescence absorption peak of the Eu / Tb MOF to be almost unchanged at 618nm, so that the Eu / Tb MOF ratio fluorescence sensor is constructed to detect the Cr (VI), and the concentration of the Cr (VI) in a to-be-detected sample is judged through fluorescence intensity, color change and CIE chromaticity diagram degree. The Eu / Tb MOF ratio fluorescence sensor can generate more color intervals, Cr (VI with different concentrations can be detected more accurately, and the sensitivity is improved. The method disclosed by the invention has the characteristics of low cost, high response speed, low detection limit and high sensitivity and selectivity.

Provided in the present invention are a continuous-reforming catalyst and a preparation method therefor, belonging to the technical field of catalyst preparation. The method comprises: performing hydrothermal crystallization on a first aluminum source and a modifier to obtain aluminum oxide precursor nanofibers; mixing the aluminum oxide precursor nanofibers with a second aluminum source, and adding the mixture to a solution of a platinum-containing compound, a tin-containing compound, and a lanthanide-containing compound to prepare a catalyst precursor slurry; adding gelatin and gum arabic to the catalyst precursor slurry, uniformly mixing same to prepare a composite colloidal solution, adding the composite colloidal solution dropwise to a liquid column consisting of an upper-layer oil phase and a lower-layer curing agent solution to shape the composite colloidal solution, then after aging, drying, and calcining, obtaining an oxidized spherical catalyst; and reducing the obtained oxidized spherical catalyst to obtain an activated spherical catalyst. Because active metals can be better dispersed on the surface of the spherical catalyst, the dispersion of Pt is improved, thus improving the carbon deposition resistance and stability of the catalyst.

In order to solve the problems of insufficient electrochemical stability, low ionic conductivity and large grain boundary resistance of the existing halogen solid electrolyte material, the invention provides a solid electrolyte material, which comprises a compound shown in the following general formula: Aa (M1bM2c) Xd, A comprises one or more of Li, Na, K, Cu and Ag, X is halogen, M1 is a main element, M1 is selected from one of Ga, Y, In, Mg, Sr, Sc, Al, Fe, Zr, Hf, Ta, Nb, W, Mn, Zn, Co, Mo, Sn, Ca, Pb, Ti, Ru and lanthanide series metal elements, and X is one or more of the following elements. M2 is a doping element and comprises one or more of IIA, IIB, IIIA, IIIB, IVA, IVB, VA and VB group elements, b is larger than the molar ratio of any element in M2, a is larger than or equal to 0.5 and smaller than or equal to 5, b is larger than or equal to 0.2 and smaller than or equal to 2, c is larger than or equal to 0.2 and smaller than or equal to 2, and d is equal to a * epsilon 1 + b * epsilon 2 + c * epsilon 3. Meanwhile, the invention also discloses a preparation method of the solid electrolyte particle, and a solid electrolyte, a semi-solid electrolyte, a positive electrode and a battery comprising the solid electrolyte particle. The solid electrolyte material provided by the invention has relatively high ionic conductivity and electrochemical stability.

The invention discloses a multiphoton up-conversion super-resolution microscopic imaging method based on microsphere super-lens enhancement, which utilizes the super-resolution advantage of a microsphere super-lens and the nonlinear response advantage of a lanthanide doped rare earth up-conversion nano material to reduce the saturation excitation power of the rare earth nano material. And super-resolution imaging under the condition of a low-magnification and low-numerical-aperture objective lens is realized. An example verifies that under the condition that system complexity is not increased, excitation powers of 455 nm and 808 nm radiation fluorescence of an up-conversion nano material are respectively reduced by 15.40 times and 23.44 times, fluorescence imaging resolutions of 455 nm and 808 nm can be respectively improved by 3.14 times and 3.6 times under a 10x 0.25 NA objective lens, and corresponding transverse resolution limits can respectively reach 358.20 nm and 480.02 nm, so that the fluorescence imaging resolution of the up-conversion nano material can be improved by 3.14 times and 3.6 times under a 10x 0.25 NA objective lens. The method has the advantages of simple imaging system, low cost and good imaging effect, and is of great significance to biological application research.

The invention relates to the technical field of chemical engineering, and discloses a catalyst, a preparation method and application of the catalyst in preparation of isopentenal. According to the catalyst for catalyzing isomerization rearrangement of 2-methyl-3-butyne-2-alcohol to prepare isopentenal, provided by the invention, the lanthanide metal oxide is utilized to modify the supported vanadium catalyst, so that the selectivity of the catalyst can be improved, and the yield of isopentenal is increased. According to the synthesis process of the isopentenal, 2-methyl-3-butene-2-alcohol can be isomerized and rearranged into the isopentenal by adopting a reactive distillation mode without using a toxic solvent, efficient and continuous production of the isopentenal is realized, meanwhile, under the catalytic action of the catalyst, the raw material can be converted into the isopentenal with high selectivity, the yield of the isopentenal is increased, and the yield of the isopentenal is increased. And under proper process conditions, hydrogen ions can be provided in the presence of a proper amount of water, so that the raw materials are promoted to be subjected to isomerization rearrangement reaction quickly, the surface temperature of the catalyst is reduced, and the carbon deposition phenomenon of the catalyst is relieved to a certain extent.

Lanthanum perovskite oxide coated high nickel ternary positive electrode material and preparation method thereof, wherein the positive electrode material is a spherical particle formed by coating a high nickel ternary positive electrode material with a lanthanum perovskite oxide coating layer at a mass ratio of 0.01 to 0.03:1; the chemical formula of the lanthanum perovskite oxide is La z Ca 1‑z CoO3, where 0 < z ≤ 1; the chemical formula of the high nickel ternary cathode material is LiNi x Co y Mn (1‑x‑y) O2, wherein 0.80≤x≤0.96, 0.01≤y≤0.10, and 1-x-y>0. The preparation method comprises ball-milling a lanthanide perovskite oxide with a high-nickel ternary cathode material, followed by low-temperature sintering under a protective atmosphere. The cathode material of the present invention exhibits high lithium ion and electron conductivity during charge and discharge, is highly reversible, has a stable structure, and exhibits excellent rate capability and cycle stability. The method of the present invention is simple, low-cost, and suitable for industrial production.

The invention belongs to the technical field of refractory materials, and particularly relates to a mullite refractory material with high mechanical property and a preparation method thereof. The mullite refractory material is prepared by taking coal gangue, bauxite and fly ash as raw materials, and the three industrial solid wastes are converted into the refractory material with high additional value, so that the concept of circular economy is met. According to the invention, coal gangue, bauxite and fly ash are used as raw materials, CaF2, V2O5 and lanthanide rare earth oxide are used as sintering aids, the problems of insufficient mechanical properties and overhigh sintering temperature of the mullite refractory material prepared by purely using coal gangue, bauxite and fly ash as raw materials are solved, and the performance of the mullite refractory material can be greatly improved. CaF2 and V2O5 promote substance transport and grain growth, and rare earth oxide inhibits excessive growth of grains. The balance of'promotion 'and'inhibition' is favorable for forming a compact, fine, uniform and interlaced mullite crystal network, and meanwhile, the mullite crystal network has high strength and good toughness.

The invention provides a Cu-Fe-Mn-P series alloy material, which contains 0.15 to 0.50 percent by weight of Fe, 0.15 to 0.50 percent by weight of Mn and 0.05 to 0.30 percent by weight of P, and further contains one or more of Ni, Mg, Cr, Sn, Zn, Zr, Ag, Ti and lanthanide series rare earth elements. The total amount of the Cu and the unavoidable impurities is 0.15 wt% or less, and the Cu and the unavoidable impurities meet the component proportional relation of the following formulas (1), (2) and (3): {Fe} + {Mn} + {P} is less than or equal to 1.0% (1); (2) 0.5 < = {Fe} / {Mn} < = 2.0; 2.0 < = ({Fe} + {Mn}) / {P} < = 5.0 (3); the Cu-Fe-Mn-P alloy material has good bending processability that the ratio R / t of the minimum bending radius to the plate thickness is smaller than 2.0, and the heat-resistant temperature is larger than or equal to 500 DEG C. The composite material can be used in the field of wide characteristic requirements of the electric conductivity of 60-90% IACS and the corresponding tensile strength of 800-600 MPa.

To provide a reductant capable of preventing or suppressing deterioration in performance and lifespan of an oxygen carrier while enabling relatively easy thermal control.SOLUTION: According to one aspect of the present invention, a reductant is provided which generates oxygen defects upon contact with a reducing gas containing hydrogen and eliminates the oxygen defects upon contact with an oxidizing gas containing carbon dioxide. The reductant contains an oxygen carrier having oxygen ion conductivity and latent heat storage particles. The oxygen carrier includes at least two metal elements belonging to Group 3 and Group 4 of the periodic table, including lanthanoids and actinoids, or includes Fe. The latent heat storage particles comprise a core particle and a coating part covering at least a portion of the core particle. The core particle is composed of an element selected from the group consisting of Al, Mg, Si, Ti, Fe, Ni, Cu, Zn, Sn, Sb, Ga, In, Bi, Pb, and Cd, or an alloy or compound mainly composed of the element, having a melting point of 100°C or higher.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a lanthanide complex, which comprises the following steps: mixing lanthanide metal with an organic solvent under anhydrous and anaerobic conditions, introducing ammonia gas at-50 to-70 DEG C, reacting, and desolventizing under reduced pressure to obtain an intermediate; adding a ligand solution into the intermediate, reacting, and desolventizing under reduced pressure to obtain a crude product; and carrying out sublimation purification or rectification purification on the crude product to obtain the lanthanide complex (R1Cp) mLa (R2-N-C (R3) = N-R2) n. According to the preparation method, raw materials are easy to obtain, the process is simple, conditions are mild, the nuclear magnetic purity of the final product can reach 98% or above, the metal purity measured through ICP reaches 5N or above, the preparation method is suitable for industrial large-scale production, and the prepared high-purity lanthanide complex can meet the application requirements of high-end fields such as semiconductors.

The present application relates to a kind of methods for separating actinium from irradiated thorium target, belong to medical radioisotope manufacturing technical field, solve the problem that thorium element and lanthanide element impurity content in final actinium product in prior art is higher.The present application discloses a kind of methods for separating actinium from irradiated thorium target, first, irradiated thorium target is dissolved, then using cation exchange resin column, UTEVA or TK200 resin extraction column, DGA resin extraction column, LN resin extraction column four-stage series separation purification process, obtain final actinium product.Actinium is efficiently and selectively recovered, and the thorium element and lanthanide element impurity content in final actinium product is significantly reduced.

The present disclosure provides a metal oxide nanoparticle comprising a metal oxide, the metal capable of being a Lewis acid; a polymer comprising an ionisable moiety; and an amino acid; wherein a weight ratio of amino acid to 5 polymer is about 0.1:99.9 to about 99.9:0.1; wherein the amino acid is electrostatically interacting with the polymer; wherein the metal oxide comprises metal ions in a 3+ and 4+ valence state; and wherein the metal oxide is selected from lanthanide oxide and / or zirconium oxide. The present disclosure also provides a method of fabricating a metal oxide particle and use thereof.

Presented herein are methods, systems, and apparatus for single analyte detection or multiplexed analyte detection based on amplified luminescent proximity homogeneous assay (“alpha”) technology, but using hollow polymer fiber optics doped with ‘acceptor bead’ dye (e.g., thioxene, anthracene, rubrene, and / or lanthanide chelates) or ‘donor bead’ dye (e.g., phthalocyanine) that carry a signal generated by the dopant via singlet oxygen channeling.

The invention discloses an element synergistic positive electrode material and a preparation method thereof, and belongs to the field of lithium ion battery electrode materials. In order to solve the technical problems that an existing doping type Co coating system lacks fine design, is poor in cycling stability and is limited in capacity, collaborative doping of multiple ions such as lanthanide is mainly adopted, and a composite design method of doping of a doping type Co coating structure and a lithium cobalt oxide body is constructed. By controlling the distribution of different ions in the body and the coating layer, stress regulation and performance optimization are realized, and the structural stability and capacity retention performance of lithium cobalt oxide under high voltage are remarkably improved.

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 invention relates to the technical field of synthesis and processing of ceramic materials, and discloses a multiphase composite coated high-dielectric-constant ceramic material and a preparation method of the multiphase composite coated high-dielectric-constant ceramic material. 11%-13% of strontium titanate; 5%-7% of holmium oxide; 5%-6% of lead magnesium niobate; 6%-7% of titanium dioxide; 2%-3% of yttrium oxide; 3%-4% of magnesium oxide; 3%-4% of bismuth oxide; 2%-3% of lithium carbonate; 4%-5.5% of silicon dioxide; 1%-2% of zinc oxide; 2.5%-3.5% of manganese dioxide; 6%-7% of copper oxide; 3%-4% of glass powder; 0.05% to 0.08% of lanthanide series elements; through the steps of component pretreatment, ball milling and mixing, drying and sieving, forming, sintering and post-treatment, the component activity is improved through high-temperature calcination pretreatment, and directional growth of crystal grains in the components can be promoted by precisely controlled sintering temperature; the prepared ceramic material has the advantages of high dielectric constant, low dielectric loss, excellent densification effect and good mechanical property.

The invention relates to the field of secondary batteries, and discloses a silicon negative electrode material, a secondary battery containing the silicon negative electrode material, and electric equipment. The silicon negative electrode material comprises silicon-based particles and a fast ion conductor, the silicon-based particles have a porous structure, and the fast ion conductor is filled in a pore channel of the porous structure; the silicon-based particles comprise a silicon element and doping elements, and the doping elements comprise at least two of IIIA group elements, VIA group elements and lanthanide elements. The doping elements are introduced into the silicon-based particles, and the transmission rate of lithium ions / electrons in the negative plate can be improved and the volume expansion of the silicon negative electrode can be relieved by utilizing different functions of different doping elements and through high-entropy design; and meanwhile, the silicon-based particles also have a porous structure, and the fast ion conductor is filled in a pore channel, so that the conduction rate of lithium ions in the negative electrode can be further improved, and the volume expansion can be further relieved to ensure that the multiplying power and the cycle performance of the secondary battery are good.