41results about How to "Increased porous structure" patented technology

The invention relates to a soil conditioner for saline-alkali land treatment and a preparation method, and belongs to the technical field of soil conditioners. The soil conditioner for saline-alkali land treatment is prepared from a fermented fertilizer, biomass charcoal II, corn straw powder, attapulgite powder, humic acid and a compound microbial agent. The soil conditioner disclosed by the invention can be used for reducing the pH value of soil, reducing salinity, promoting the recovery of organic matters and improving the fertility of the soil, and is beneficial to improving the yield of crops.

The invention belongs to the technical field of biosensing instant detection, and relates to DAAO / HRP-MAF-7 hydrogel as well as a preparation method and application thereof. The hydrogel is formed by immobilizing horse radish peroxidase (HRP) and D-amino acid oxidase (DAAO) in a hydrophilic metal organic framework MAF-7, and then loading the prepared DAAO / HRP-MAF-7 biological composite material and a color developing agent TMB in PEG-DA hydrogel together. The DAAO / HRP-MAF-7 hydrogel can be used as a biosensor to be applied to detection of D-amino acid.

The invention discloses a porous high-entropy perovskite composite material and a preparation method and application thereof, and belongs to the technical field of electrode materials, on the basis of an oxide LaFeO3, Mn < 2 + >, Co < 2 + >, Ni < 2 + > and Cu < 2 + > are adopted to dope and replace part of Fe < 3 + >, so that the porous high-entropy perovskite composite material with the chemical formula of La (Mn0. 2Fe0. 2Co0. 2Ni0. 2Cu0. 2) O3 is obtained, and the porous high-entropy perovskite composite material with the chemical formula of La (Mn0. 2Fe0. 2Co0. 2Ni0. 2Cu0. 2) O3 is prepared. The specific surface area and the porous structure of the high-entropy perovskite composite material are increased, more electrochemical active sites are exposed, and richer electrolyte ion transmission channels are provided, so that various properties of the electrode material prepared by taking the porous high-entropy perovskite composite material as the raw material are improved.

The invention discloses a lignocellulose modified ammonium polyphosphate hydrogel slow-release fertilizer and a preparation method thereof, and belongs to the technical field of slow-release fertilizers, the preparation method comprises the following steps: adding biomass into an alkaline solution for heating treatment, adding biomass into an acidic solution for heating treatment, and collecting a reaction solution; adding urea into the reaction solution, reacting under a heating condition to prepare an ammonium polyphosphate-lignocellulose mixture, grinding the ammonium polyphosphate-lignocellulose mixture into powder, and then adding the powder into a potassium persulfate solution to prepare a suspension; the preparation method comprises the following steps: adding potassium hydroxide, acrylic acid, acrylamide, urea and MBA into water under heating and nitrogen protection to obtain a mixed solution; mixing the suspension liquid with the mixed solution, heating and reacting under nitrogen and stirring conditions, dicing and drying to prepare the slow-release fertilizer which has good water and fertilizer retention capacity, relatively strong slow-release capacity, soil structure improvement capacity and heavy metal adsorption potential, and effectively solves the problems of poor water retention capacity and poor soil improvement effect in the prior art.

The invention discloses a biological soil conditioner containing mineral powder and a preparation method thereof, and belongs to the technical field of microbial soil conditioners. The conditioner is prepared from the following raw materials in parts by weight: 20 to 40 parts of compound microorganism bacterium liquid, 10 to 20 parts of mineral powder and 15 to 20 parts of auxiliary material carrier. According to the invention, two high-acid-resistance growth-promoting bacterial fungal microorganisms are screened, compounded and loaded into the high-activity rice hull biochar, and all the raw materials are matched with one another, so that the aluminum pollution of the acid-aluminum soil can be improved, the soil fertility can be improved, the growth of plants can be promoted, the microbial community structure of the soil can be enriched, and the application prospect is great.

The invention discloses a pesticide wastewater partitioned anaerobic membrane bioreactor treatment device, and relates to the technical field of pesticide wastewater treatment and recovery. Comprising a water inlet system for diluting and storing high-toxicity pesticide wastewater; iron-attached biochar is added into the partitioned UASB reactor, and a water inlet of the partitioned UASB reactor is communicated with a water outlet of the water inlet system; online monitoring equipment is arranged outside the external membrane tank, and a water inlet of the external membrane tank is communicated with a water outlet of the partitioned UASB reactor; the water outlet tank is connected with a membrane backwashing device, and biogas generated in the reaction process is collected by a gas collecting bag; the water inlet of the water outlet tank is communicated with the water outlet of the external membrane tank. The device can stably run for a long time, degradation of high-organic-load and high-toxicity pesticide sewage is realized, the energy recovery potential is improved, and membrane pollution is reduced.

The invention relates to the technical field of waste plastic recycling, and discloses a method for converting waste plastic into a high-value MOF material based on a continuous process. The method comprises the following steps: firstly, crushing the waste PET plastic, mixing the crushed waste PET plastic with betaine, and carrying out a heating reaction in ethylene glycol to form a ligand carrier solution; then, alkaline earth metal salt is dissolved in dimethylformamide (DMF) to prepare a metal salt solution, sodium hydroxide (NaOH) is added into the ligand carrier solution at the temperature of 110-130 DEG C, and a turbid ligand salt solution is formed; then, adding the metal salt solution into the ligand salt, and promoting a coordination reaction to obtain a solid-liquid mixture; finally, the MOF material with excellent performance is prepared through the steps of washing, drying and the like. The obtained MOF material has a uniform porous structure and a relatively large specific surface area, and shows a wide potential of high-value utilization of waste PET plastic resource. The method is simple in process and suitable for industrial continuous production.

The invention provides a bifunctional oxygen electrocatalyst with an asymmetric coordination structure and a preparation method and application thereof, a porous layered precursor is formed through an amide reaction between melamine and citric acid, and the special structure and different functional groups of the porous layered precursor provide many sites for insertion and adsorption of transition metal ions; and an asymmetric coordination structure with high active sites can be formed, the electronic structure of transition metal ions is effectively optimized, and the electro-catalytic performance is improved. The bifunctional oxygen electrocatalyst prepared by the invention shows excellent ORR / OER activity under alkaline conditions, and the power density of a zinc-air battery driven by the bifunctional oxygen electrocatalyst as a cathode catalyst reaches up to 226.7 mW cm <-2 >.

The invention discloses a porous carbon material based on microwave calcination and a preparation method thereof, and belongs to the field of porous carbon preparation, the preparation method comprises the steps that a carbon base material and potassium hydroxide are mixed according to the mass ratio of 1: 1-5, a mixed material is obtained, and the carbon base material comprises biomass carbon, resin carbon and fossil carbon; the mixing comprises the following steps: putting the carbon base material and potassium hydroxide into a mixer, and stirring at the rotating speed of 200-600rpm for 3-20 minutes; pressing the mixed material into a block body, and putting the block body into a microwave calcining furnace for calcining treatment; and the calcined block is subjected to acid pickling and drying treatment. The cost and the performance can be adjusted as required by using diversified raw material sources, and the trend of green chemistry and sustainable development is met.

The invention relates to the technical field of adsorption materials, in particular to a modified zirconium phosphate / resin composite material, a preparation method thereof and a method for recycling nuclides in nuclear waste liquid. The modified zirconium phosphate / resin composite material comprises modified zirconium phosphate and a resin material in a mass ratio of 1: (0.05-0.2), the modified zirconium phosphate is zirconium phosphate containing doped metal ions, and the doped metal ions comprise one or more of Cu < 2 + >, Fe < 3 + >, Zn < 2 + >, Co < 2 + > and Ni < 2 + >. The modified zirconium phosphate / resin composite material provided by the invention has excellent selectivity on nuclides, so that the modified zirconium phosphate / resin composite material has excellent adsorption and recovery performance and good desorption and regeneration performance.

The invention discloses a preparation method of an oral antibacterial periosteum, and relates to the technical field of periosteum. Comprising the following steps: step 1, preparing raw materials; 2, pig peritoneum pretreatment: removing large-area fat from the pig peritoneum, trimming miscellaneous edges, and cleaning with pure water until no obvious attachments exist, so as to obtain a pig peritoneum A; step 3, degreasing treatment: putting the pig peritoneum A into a sodium hydroxide solution for degreasing cleaning, and then sequentially performing pure water cleaning and isopropanol cleaning to obtain a pig peritoneum B; 4, decellularization treatment: putting the pig peritoneum B into a sodium chloride solution for decellularization cleaning, and then cleaning with pure water to obtain a pig peritoneum C; step 5, cleaning: further cleaning the pig peritoneum C with pure water, and then performing ultrasonic cleaning to obtain pig peritoneum D; 6, the pig peritoneum D is flatly laid and freeze-dried, and a basic periosteum is obtained; and step 7, uniformly coating the surface of the basic periosteum with the carboxymethyl chitosan solution, spreading, and freeze-drying to obtain the antibacterial periosteum.

The present invention provides a slow-release fertilizer composite hydrogel and a preparation method and application thereof, belonging to the technical field of slow-release fertilizers. The slow-release fertilizer composite hydrogel comprises the following raw materials in parts by weight: 2 to 58 parts of lignocellulose nanofiber suspension, 0.05 to 0.15 parts of clinoptilolite, 5 to 15 parts of acrylic acid, 5 to 15 parts of acrylamide, 1 to 2 parts of initiator, 0.1 to 0.3 parts of cross-linking agent and 5 to 15 parts of urea. The present invention also provides a preparation method of the slow-release fertilizer composite hydrogel and its application in agricultural planting. The slow-release fertilizer composite hydrogel of the present invention has good overall stability, presents an obvious porous structure, has small internal pores and uniform pores, has good water absorption, swelling and water retention effects, has ideal controlled release performance and urea slow release effect, and can be well used in the planting of agricultural crops and forestry plants, as well as the ecological restoration of difficult sites in urban and rural areas.

The present application relates to the technical field of adsorption materials, and specifically to a modified zirconium phosphate / resin composite material and a preparation method thereof, and a method for recovering nuclides in nuclear waste liquid. The modified zirconium phosphate / resin composite material of the present application comprises a modified zirconium phosphate and a resin material in a mass ratio of 1: (0.05-0.2), wherein the modified zirconium phosphate is a zirconium phosphate containing doped metal ions, and the doped metal ions include Cu 2+ , Fe 3+ 、Zn 2+ 、Co 2+ and Ni 2+ The modified zirconium phosphate / resin composite material provided in the present application has excellent selectivity for nuclides, so it has excellent adsorption recovery performance and good desorption regeneration performance.

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 relates to the field of whole-bean solid beverage processing, in particular to a whole-bean solid beverage processing technology. According to the processing technology of the whole-bean solid beverage, processing of the whole-bean solid beverage is realized mainly through a step of preparing whole-bean fiber-based aerogel, a step of preparing whole-bean fiber-based aerogel dry powder and a step of preparing the whole-bean solid beverage. Wherein the taste of the whole-bean solid beverage is realized by blending the whole-bean fiber-based aerogel dry powder, the whole-bean fiber-based aerogel dry powder and the whey protein powder, and the whole-bean solid beverage with different flavors such as original flavor, chocolate flavor, strawberry flavor and banana flavor can be formed by blending the proportions of the whole-bean fiber-based aerogel dry powder, the whole-bean fiber-based aerogel dry powder and the whey protein powder. The whole-bean solid beverage obtained through the whole-bean solid beverage processing technology is unique in flavor, savoury and mellow in taste and good in solubility, emulsibility and stability, and whole-bean solid beverages with different flavors have different nutritional ingredients.

The present invention belongs to the field of biosensor instant detection technology, and relates to a DAAO / HRP@MAF-7 hydrogel and its preparation method and application. The hydrogel is formed by immobilizing horseradish peroxidase HRP and D-amino acid oxidase DAAO in a hydrophilic metal organic framework MAF-7, and then the prepared DAAO / HRP@MAF-7 biocomposite material and the color developer TMB are co-loaded in a PEG-DA hydrogel. The DAAO / HRP@MAF-7 hydrogel can be used as a biosensor to detect D-amino acids.

The present application relates to the technical field of feed additives, and specifically discloses a process for spray-dried blood meal. A process for spray-dried blood meal comprises the following steps: (1) pretreatment: filtering fresh blood to remove residues for standby use; (2) adjusting pH: using sodium citrate buffer solution to adjust the pH value to 6.8-7.2; (3) spray drying: using a high-precision centrifugal pump to transport the adjusted blood into a spray tower for spray drying; (4) permeate treatment: dispersing the powder formed by spray drying in the permeate, treating at 25-30°C for 3-3.5h, centrifuging, drying at 30-35°C, and reducing the moisture content to 40-60%, and then performing variable temperature pressure difference puffing treatment; (5) coating: coating the powder formed by spray drying through a fluidized bed, and packaging and storage; In addition, the preparation method of the present application has the advantages of increasing the nutrient content and digestibility of the product blood meal.

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 present invention relates to the technical field of lithium ion batteries, and in particular to a composite, a composite lithium supplement, a preparation method and an application thereof. The composite comprises a metal aerogel and a solid electrolyte; the metal aerogel is Ni@Co@M metal aerogel, M is Mo or Fe; the solid electrolyte is selected from lithium aluminum titanium phosphate, lithium lanthanum zirconium oxide or lithium lanthanum titanium oxide. The composite is used as a component of an aerogel coating layer to form a composite lithium supplement with lithium oxalate; using Ni@Co@M multi-metal aerogel as a substrate helps to improve the electrochemical performance of the lithium supplement. The solid electrolyte can increase the ionic conductivity and electronic conductivity of lithium oxalate, and after the decomposition of lithium oxalate, it can also serve as a reaction product to improve the interface stability between the positive electrode and the electrolyte, thereby improving the overall performance of the battery. The lithium ion battery prepared from the composite lithium supplement has a low delithiation potential and a high initial charge and discharge specific capacity.

The invention discloses an electrostatic spinning fiber base membrane for water treatment, which comprises a composite polymer fiber matrix and keratin, and the keratin is attached to the fiber surface; the composite polymer fiber matrix comprises polybutylene terephthalate, hydrophilic modified polyester and polyvinyl alcohol; the hydrophilic modified polyester is prepared from polyester polyol containing a morpholinedione structure and terephthalic acid through esterification. By compounding hydrophilic modified polyester, polyvinyl alcohol and keratin, the porous structure of the fiber base membrane is optimized, the hydrophilic performance of the base membrane is improved, the decontamination effect is improved, meanwhile, the mechanical performance of the fiber base membrane is optimized, and the service life of the fiber base membrane is prolonged; cysteine is released through keratin hydrolysis, an electron donor is provided, the method is suitable for strain growth, and the sewage treatment effect is further improved.

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.

The invention discloses a nerve scaffold for targeted delivery of ATPIF1 protein to axonal mitochondria and a preparation method of the nerve scaffold. The nerve scaffold comprises an RVG-TPP-ATPIF1 complex, a liposome microsphere wrapping the RVG-TPP-ATPIF1 complex, and an electrostatic spinning nerve conduit loading the liposome microsphere; wherein the RVG-TPP-ATPIF1 complex is a protein conjugate of rabies virus glycoprotein polypeptide, triphenylphosphine and an ATP (adenosine triphosphate) synthase inhibition factor 1. The nerve scaffold system provided by the invention integrates targeted delivery, controlled release and physical support, and provides a new strategy and method for treatment of peripheral nerve injury.

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.

The invention discloses a cellulose-based composite material for simultaneously removing copper and tetracycline in a water body and a preparation method of the cellulose-based composite material, and belongs to the technical field of environment functional composite materials. The cellulose-based composite material is Zr-MOF / CNF, and the preparation method comprises the following specific preparation steps: firstly preparing zirconium (Zr)-based MOF by adopting an ultrasonic method, then preparing nanocellulose by adopting a TEMPO oxidation method, then mixing under the assistance of ultrasonic waves to obtain white suspension, centrifuging, and then washing with water and alcohol to obtain the Zr-MOF / CNF composite material. The material is synthesized by adopting an ultrasonic method, the preparation process is simple, the cost of raw materials is low, the problems that cellulose is lack of a porous structure, MOF particles are agglomerated and the water stability is poor are solved, and the practical application capability of Zr-MOF / CNF is improved. The cellulose-based composite material can effectively adsorb copper and tetracycline, and when the initial concentrations of copper and tetracycline are 32 mg / L and 444 mg / L respectively and the pH value of an initial solution is 7.0, the adsorption capacities of Zr-MOF / CNF to copper and tetracycline respectively reach 157.08 mg / g and 1532 mg / g.

The invention belongs to the technical field of wastewater electrolysis hydrogen production and electrode materials, and particularly relates to a FeB-based porous electrode material and a preparation method thereof. The FeB-based porous electrode material is obtained by high-temperature sintering of a blank comprising an Fe-B compound, Fe and metal M, and the metal M is Ni or Co. The preparation method of the FeB-based porous electrode material comprises the following steps: obtaining mixed powder comprising an Fe-B compound, Fe, metal M and a forming agent; pressing the mixed powder into a green body; and sintering the green body to obtain the FeB-based porous electrode material. The Fe-B compound and Ni or Co are introduced, and a high-temperature sintering technology is adopted, so that the conductivity, the electrocatalytic activity, the mechanical strength and the stability of the material are remarkably improved, the porous structure is optimized, the comprehensive performance is improved, and the material has important research value and wide application prospects.

The invention relates to the technical field of weeding compositions and herbicides, and particularly discloses a weeding composition containing pyraflufen and a preparation method of the weeding composition. According to the weeding composition containing the pyraflufen-ethyl, the effective active ingredients are the imazamox and the pyraflufen-ethyl, and the mass ratio of the imazamox to the pyraflufen-ethyl is (1-60): (1-60). When the imazamox and the pyraflufen in the prepared weeding composition containing the pyraflufen are mixed for use, the synergistic effect is achieved, the weeding effect is enhanced, broadleaf weeds and grassy weeds can be controlled at the same time through mixed use, and the more comprehensive weeding effect is provided.

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 discloses a porous hydrogel microneedle for miRNA (micro Ribonucleic Acid) detection as well as a preparation method and a detection method of the porous hydrogel microneedle. The hydrogel microneedle has a porous structure and osmotic pressure driving force. The porous structure of the microneedle is improved through polyethylene glycol modified hydrogel, the osmotic pressure of interstitial fluid in a hydrogel matrix is increased through lithium chloride treatment, and diffusion of the interstitial fluid in an application area is promoted and the interstitial fluid enters a hydrogel microneedle matrix. In the extraction process, penetrating fluid can be dissolved in a matrix and generate osmotic pressure, so that diffusion of interstitial fluid (ISF) from the skin to the hydrogel matrix is promoted, the capture efficiency of miRNA-21, miRNA-221 and miRNA-155 is improved, effective localized surface plasmon resonance fluorescence is generated through combination of captured miRNA and gold particles, and finally ultra-sensitive detection of miRNA is realized through a fluorescence spectrum.