10results about How to "Increased porous structure" patented technology

The application relates to the technical field of catalysts, and discloses a nano magnesium oxide material and a preparation method and application thereof. The nano magnesium oxide material has a porous structure, wherein the particle size of the nano magnesium oxide is 20-200 nm; and the pore size of the porous structure is 5-45 nm. The classical nucleation growth process of the magnesium oxide is directionally adjusted in a weak alkaline nucleation system, and then the nano magnesium oxide with a controllable grain size distribution is obtained. The nano magnesium oxide material has good catalytic activity in the synthesis of propylene carbonate from CO2 and an epoxide under the conditions of no solvent and no auxiliary agent, and the catalyst is not deactivated after multiple uses, and has good stability.

The present application belongs to the technical field of biochar, and particularly relates to a high-activity acidolysis biochar, which is prepared by the following steps: S1, pretreating agricultural and livestock waste; S2, acidolysing the pretreated biomass with dilute acid to obtain acidolysed biomass; S3, placing the acidolysed biomass into a high-temperature furnace to perform carbonization under an oxygen-free condition, and using a step-by-step heating mode to obtain preliminary biochar; and S4, mixing the preliminary biochar with a copolymer solution to prepare the high-activity acidolysis biochar. In the present application, the sodium lignosulfonate-polyglutamic acid copolymer forms a stable connection with the biochar through chemical bonding, the porous surface of the biochar is uniformly covered with the copolymer to form a nanoscale film, the composite has stronger complexing, chelating and ion exchange capacity for heavy metal ions and other cations in the soil, and is helpful to reduce toxic substances in the soil and improve the soil environment.

The invention provides a phthalocyanine sulfonamide derivative dye as well as a preparation method and application thereof, and belongs to the technical field of phthalocyanine series dyes. The structural general formula of the phthalocyanine sulfonamide derivative dye is (PC)-(SO2-N-X) z-(SO3R) y, PC is a phthalocyanine or metal phthalocyanine group, X is hydrogen, C1-C14 alkyl, hydroxyalkyl, aralkyl or aromatic group, R is hydrogen, C1-C4 alkyl or amine salt cation, the value range of z is 1-4, the value range of y is 1-3, and the sum of z and y is less than or equal to 4. According to the invention, the sulfonamide group and the sulfonic acid group are introduced at the same time, so that the prepared derivative dye has excellent organic solvent solubility and water solubility, and the problem of single solubility of the traditional zinc phthalocyanine dye is effectively solved.

The application relates to a fluorinated two-dimensional inorganic nanofiller reinforced PEO-based solid-state polymer electrolyte and a preparation method and application thereof, and comprises the following steps: S1, obtaining fluorinated two-dimensional inorganic nanofillers by treating two-dimensional inorganic materials with a mixed gas of fluorine and nitrogen; S2, dissolving polyethylene oxide and a lithium salt in a polar solvent, then adding the fluorinated two-dimensional inorganic nanofillers obtained in the step S1, mixing, and obtaining a uniform mixed polymer solution; and S3, pouring the mixed polymer solution obtained in the step S2 on a polytetrafluoroethylene mold, vacuum drying, and obtaining the PEO-based solid-state polymer electrolyte. Compared with the prior art, the preparation process is simple and easy to operate, the ionic conductivity of the polymer electrolyte based on the fluorinated two-dimensional inorganic nanofillers can be improved, the electrochemical stability window can be widened, and the interface stability between the electrolyte and a lithium metal electrode can be improved.

This invention provides a colorimetric detection method for quercetin based on NH2-MIL-101-CuCo nanozymes. The method includes: preparing a first mixture by mixing NH2-MIL-101-CuCo nanozymes, TMB solution, and hydrogen peroxide solution with the sample to be tested, and a second mixture by mixing with a quercetin standard; reacting the mixture under the same reaction conditions to obtain absorbance values ​​A1 and A0 at predetermined wavelengths; determining the quercetin content in the sample based on A1 and linear regression curves of different concentrations of quercetin; the nanozyme is synthesized in one step via a hydrothermal method using copper chloride dihydrate, cobalt chloride hexahydrate, 2-aminoterephthalic acid, and sodium hydroxide. The method utilizes hydrogen bonds formed by the active hydrogen atoms in the nanozyme and the hydroxyl groups in quercetin to specifically recognize and adsorb quercetin, thus enabling the detection of quercetin.

This invention discloses a high-stability battery separator, its preparation method, and its applications, relating to the field of lithium-ion battery separator technology. A high-stability battery separator is made from raw materials comprising the following parts by weight: a base polymer: 70-95 parts, an oxidation-resistant modified polymer: 5-30 parts, an inorganic filler: 30-70 parts, a plasticizer: 1-10 parts, a coupling agent: 0.5-5 parts, an antistatic agent: 0.1-3 parts, and a stabilizer: 3-5 parts. The stabilizer is a specific structural compound containing electron-rich nitrogen heterocycles and active substituents, which synergistically improves separator performance by quenching free radicals, complexing metal ions, and inhibiting polymer chain slippage. Compared with existing technologies, this invention significantly improves the separator porosity and electrolyte absorption capacity, and greatly enhances the limiting oxygen index, indicating superior ion transport efficiency and flame retardant safety. This separator is suitable for power batteries, energy storage batteries, and other fields, effectively improving battery high-temperature stability and service life.

The invention provides a porous and high-hardness titanium alloy material and a preparation method and application thereof. The preparation method comprises the following steps: carrying out surface modification on a titanium alloy matrix material by adopting a micro-arc oxidation technology so as to form a ceramic coating with a porous structure on the titanium alloy matrix material to obtain a first intermediate material; etching the first intermediate material by adopting argon plasma to form atomic vacancies on the ceramic coating to obtain a second intermediate material; and the second intermediate material is subjected to plasma nitriding treatment through a hollow cathode plasma nitriding technology, the nitriding temperature is 500 DEG C or below, and the porous and high-hardness titanium alloy material is obtained. According to the preparation method, nitriding can be achieved under the low-temperature condition of 500 DEG C or below, a good porous structure is maintained, and the prepared titanium alloy material is high in hardness and excellent in abrasion resistance and corrosion resistance; the problem that an existing nitriding technology needs to be carried out at the high temperature of 700 DEG C, and consequently a porous structure deforms is solved.

The application discloses a kind of gas sensors based on the principle of proton exchange membrane fuel cell of asymmetric MEA structure, including asymmetric membrane electrode assembly, asymmetric membrane electrode assembly includes proton exchange membrane, anode catalytic layer and cathode catalytic layer being compounded in one side of proton exchange membrane and the other side of proton exchange membrane;Anode catalytic layer side away from proton exchange membrane and cathode catalytic layer side away from proton exchange membrane are covered with gas diffusion layer.The gas sensor is unified with porous nano gold as the basis to build anode and cathode differentiation catalytic system, solve the problem of low concentration detection sensitivity of traditional symmetric MEA structure, detection limit is high, while overcoming the defects of existing asymmetric MEA structure baseline current imbalance, large zero drift, high interface impedance, poor stability and complex preparation process, so that sensor has high detection sensitivity, high selectivity, excellent long-term stability and low baseline fluctuation, meet the high-precision, high-reliable detection needs of carbon monoxide and other gases.

The invention belongs to the technical field of conductive fabrics, and particularly relates to a conductive fabric and a preparation method and application thereof. The preparation method of the conductive fabric comprises the following steps: adding a metal salt into an MXene dispersion liquid to obtain a mixed solution I, immersing a base material into the mixed solution I, and repeatedly pulling to load MXene on the surface of the base material to obtain an MXene-loaded base material; and mixing nickel salt, an organic ligand and a solvent to obtain a mixed solution II, contacting the MXene-loaded base material with the surface of the mixed solution II, then dropwise adding ammonia water into the mixed solution II, carrying out a heating reaction, and drying to obtain the conductive fabric. The prepared conductive fabric is in a sandwich-like form of a PMIA layer, an MXene layer and an MOF layer, a conductive material is not added into the fabric, intrinsic characteristics of the electrostatic textile fabric cannot be damaged, and the problem that in the prior art, mechanical flexibility of the fabric is insufficient is solved on the premise that excellent conductivity is guaranteed.