26results about How to "Improve chelation ability" patented technology

The invention belongs to the technical field of perovskite solar cells, and particularly discloses a self-assembly monomolecular film hole transport material based on diphosphoric acid and a preparation method and application thereof.The diphosphoric acid serves as an anchoring group, the chelation between the material and a conductive base can be effectively enhanced, the self-assembly characteristic of the material on the surface of a substrate is improved, and the hole transport efficiency is improved. The compact and smooth self-assembled monomolecular film is formed. Meanwhile, the electron and space effects of alkyl chains or benzene ring connecting units are regulated and controlled, so that the molecular stereo configuration and energy level matching are optimized. The material disclosed by the invention is simple in synthesis steps and low in preparation cost, and industrial synthesis of the material can be realized. When the material is applied to an inverted perovskite solar cell as a hole transport layer, photoelectric conversion efficiency exceeding 24.7% and excellent device stability performance can be obtained, and huge commercial prospects are shown.

The invention discloses a cold-rolled silicon steel thin strip and a processing method thereof, and relates to the technical field of silicon steel strips. According to the method, the silicon steel plate is cold-rolled into the ultrathin silicon steel strip, then the ultrathin silicon steel strip is subjected to activating treatment through the activating solution and then coated with the anti-corrosion coating, and the prepared ultrathin silicon steel strip has good corrosion resistance. According to the invention, phytic acid and modified polyaspartic acid are added into an activating solution. According to the iron-based organic framework material, polysuccinimide is used as a raw material, dopamine is added for grafting modification, a polymer which takes polyaspartic acid as a framework and is grafted with dopamine is obtained, the dopamine has a catechol group, and the chelating property of the polyaspartic acid to metal ions on the iron-based organic framework material is further enhanced. And meanwhile, phytic acid is added into the activating solution, the phytic acid and the modified polyaspartic acid can form a nano-porous structure, loading of subsequent modified silica sol is facilitated, and therefore the corrosion resistance of the ultra-thin silicon steel strip is further enhanced.

The invention relates to the technical field of soil improvement materials, and provides a soil heavy metal pollution repairing agent based on biomass power plant ash, which mainly comprises surface modified porous biomass power plant ash, polymer modified bentonite, a soil modified repairing agent and clay minerals. The surface modified porous biomass power plant ash is obtained through gamma-aminopropyltriethoxysilane and humic acid modified porous biomass power plant ash clustering, and the polymer modified bentonite is bentonite modified by acrylic acid and sodium carboxymethyl cellulose through a polymerization reaction. The preparation method comprises the steps of pretreatment of biomass power plant ash, liquid nitrogen freezing, freeze drying, porous structure formation, surface modification and the like. The components are mixed, granulated and molded, so that the obtained remediation agent can effectively reduce the bio-availability of heavy metals in soil, reduce the heavy metal absorption of crops and improve the soil environment quality.

The invention discloses sheep blood phosphopeptide chelated iron prepared by a one-pot method, a preparation method and application, and relates to the technical field of preparation methods of peptide chelated iron, the method comprises the following steps: dissolving sheep blood powder in water, and preheating to 50-55 DEG C to obtain a sheep blood powder solution; papain is added into the sheep blood powder solution for enzymolysis, a sheep blood peptide solution is obtained, sodium pyrophosphate is added into the sheep blood peptide solution for phosphorylation modification, and a sheep blood phosphopeptide reaction solution is obtained; adjusting the pH value of the sheep blood phosphopeptide reaction liquid to 3.0-4.0 to dissociate heme groups to obtain dissociation liquid; and centrifuging the dissociation liquid, and recovering the supernatant to obtain the sheep blood phosphopeptide chelated iron. In the preparation process, endogenous iron ions contained in the heme are utilized, so that the complex preparation process of the current blood peptide iron chelate is simplified.

The invention provides a modified carboxymethyl chitosan-based conductive composite material modified electrode as well as a preparation method and application thereof, and belongs to the technical field of heavy metal detection sensors. The preparation method of the modified carboxymethyl chitosan-based conductive composite material modified electrode comprises the following steps: dissolving carboxymethyl chitosan, adding an activator for activation, and then adding L-methionine for a coupling reaction to obtain an L-methionine graft modified carboxymethyl chitosan derivative; dispersing the L-methionine graft modified carboxymethyl chitosan derivative, polypyrrole and a multi-walled carbon nanotube in a solvent to obtain a dispersion liquid; and coating the surface of a substrate electrode with the dispersion liquid, and drying to obtain the modified carboxymethyl chitosan-based conductive composite material modified electrode. The electrochemical sensor constructed by the electrode modified by the modified carboxymethyl chitosan-based conductive composite material realizes simultaneous determination of Cd < 2 + >, Pb < 2 + > and Cu < 2 + >.

The invention discloses modified fiber filter cloth and application thereof in heavy metal ion adsorption. Through dicyandiamide etching and bridging effect of arginine, a stable polyphenol hydroxyl adsorption layer is formed on the surface of the polyester fiber, so that the chelating ability of the polyester fiber to heavy metal ions is effectively improved, and the modified polyester fiber shows excellent adsorption performance in the aspect of treating the heavy metal ions in textile wastewater; particularly, the efficient removal effect on ions such as Cu < 2 + > and Zn < 2 + > in the textile wastewater is achieved. The modification method provides a new solution for efficient and environment-friendly textile wastewater treatment.

The invention discloses a copper ion-containing biological fluorescent probe for detecting cell endogenous H2S as well as a preparation method and application of the copper ion-containing biological fluorescent probe. Belongs to the technical field of fluorescence detection, the structural formula of the probe is # imgabs0 #, and the probe has high sensitivity, low detection limit and excellent selectivity for endogenous H2S in cells. And the fluorescent probe also has low toxicity, high biological safety and good water solubility, and is suitable for detection of endogenous H2S in cells. Besides, the method has short response time to intracellular H2S, can quickly and accurately monitor the intracellular H2S level, and has potential application value in the field of related disease research.

The present invention provides a compound DOTA-HX2-DZ and its application, belonging to the field of biomedical technology. The present invention optimizes the molecular structure of DZ-HX2-DOTA, designs and adopts a special linker, and solves the problem of limited anti-tumor efficacy caused by the poor performance of radiolabeled drugs in the prior art, such as stability, lipid solubility and tumor retention time. The compound of the present invention can significantly reduce the risk of delabeling of radioactive metal ions in the in vivo environment, ensuring that it can stably play a role in the targeted site; the molecule has excellent lipid solubility and can more easily penetrate the cell membrane and vascular barrier, thereby improving the bioavailability of the drug, prolonging the in vivo circulation time, and prolonging the tumor retention time, thereby improving the treatment efficiency. The DZ-HX2-DOTA of the present invention has a broad spectrum of tumor targeting, and can be used for diagnosis and treatment of various types of malignant tumors.

The invention discloses an amino acid organic fertilizer and a preparation method thereof. The method adopts compounded fungi and fermentation aids to reduce the peculiar smell and fatty acid content of fish viscera after fermentation; a specially prepared viscous additive is used to prevent the fertilizer from being washed away by rainwater and reducing the fertilizer efficiency, and the amino acids in the fertilizer from being oxidized by light; and a chelating synergistic coating agent containing trace elements and having a slow-release function is used to coat the organic fertilizer particles. The amino acid organic fertilizer prepared by the invention has the characteristics of short fermentation time, low fatty acid content, easy absorption by crops, long-lasting fertilizer efficiency, and comprehensive nutrition.

The invention relates to a preparation method of a nano rubber toughened double amidoxime-based hydrogel uranium adsorbent, in particular to a preparation method of a nano rubber toughened double amidoxime-based hydrogel uranium adsorbent. The invention aims to solve the problems that polyacrylamide has poor mechanical properties such as fragility and insufficient toughness after absorbing water and swelling, lacks uranium chelated groups on the surface, and is not beneficial to repeated adsorption and desorption use in the practical application process. The method comprises the following steps: uniformly dispersing nano rubber in polyacrylamide by utilizing an irradiation method to prepare a polyacrylamide / nano rubber hydrogel matrix; chemically soaking and grafting a DAMN group to obtain a hydrogel precursor material containing a cyano group; through an amidoximation reaction, the conversion from a cyano group to an oximido group is realized, and the hydrogel containing double amidoxime groups is obtained. According to the invention, the double amidoxime-based hydrogel uranium adsorption material with high mechanical property, high adsorption property and good adsorption selectivity is prepared. The prepared adsorbent is used for uranium adsorption.

The invention discloses a soluble organic trace element composition as well as a preparation method and application thereof. The enteromorpha prolifera-montmorillonite nano composite material is specifically prepared from an enteromorpha prolifera extracting solution, a trehalose-montmorillonite nano composite material, boric acid, ammonium molybdate tetrahydrate, zinc sulfate heptahydrate, calcium nitrate tetrahydrate, ferrous sulfate heptahydrate, copper sulfate pentahydrate, cobaltous sulfate heptahydrate, manganese sulfate tetrahydrate, sodium selenite and the like. The composition can be used for preparing feed additives, raw material sources are green and environmentally friendly, the improvement of animal production performance can be obviously promoted, and the composition has very good market popularization prospects.

The present application relates to the field of chemistry, and provide a kind of preparation method of glycyrrhizin dipotassium salt based on chelating resin deep removal heavy metal, comprising the following steps: glycyrrhizin monoammonium salt is added to alkaline pure water solution, stirring, adjust pH to 7.5~8.5, obtain solution;The obtained solution is passed through mixed resin column, flush mixed resin column, combine effluent, concentrate and dry, obtain glycyrrhizin dipotassium salt;Wherein, the mixed resin in the mixed resin is the composition of cation exchange resin and new chelating resin.The preparation method of the present application is simple and reasonable, green and environmental protection, in the preparation process, using cation exchange resin and new chelating resin promote glycyrrhizin dipotassium salt purification, so that the residual alcohol content in the obtained glycyrrhizin dipotassium salt is ≤500mg / kg, residual ammonia content is ≤40mg / kg, and lead, cadmium, arsenic, mercury content is all ≤0.2mg / kg.

The application discloses a treatment system for treating strongly complexed heavy metal wastewater in an electroplating industry, comprising an oxidation reaction tank, a Fenton-like reaction tank, a homogenizing adjusting tank, a chemical mixing tank, a No. I flocculation tank, a No. I sedimentation tank, a heavy metal adsorption tank, a No. II flocculation tank, a No. II sedimentation tank and a clean water tank which are connected in sequence; wherein, the bottom of the No. II sedimentation tank is provided with two sludge discharge ports, one of which is connected with the heavy metal adsorption tank through a sludge backflow pipeline, and the other is connected with a regeneration system. The application also discloses a method for treating strongly complexed heavy metal wastewater in the electroplating industry based on the treatment system. The method adopts the process of first oxidizing and breaking the complex, then adding alkali to precipitate, and finally modifying zeolite to adsorb, so that the electroplating strongly complexed heavy metal wastewater can be treated, the concentration of heavy metal ions in the effluent can be stably reduced to below 0.1 mg / L, and the discharge standard can be reached.

The invention discloses a crown ether functionalized silica gel material and its preparation method and application; the crown ether functionalized silica gel material is prepared by reacting a multifunctional amino functionalized silica gel material with a benzo crown ether derivative with an aldehyde group; or the multifunctional amino functionalized silica gel material is reacted with a benzo crown ether derivative with an aldehyde group, and then reacted with a crown ether compound with an alkenyl group, a carboxyl group or a halogen group; the invention fixes the crown ether on the silica gel material in the form of a skeleton through the reaction of the benzo crown ether derivative with the amino group at the end of the polyamine silane chain in the multifunctional amino functionalized silica gel material, forming a three-dimensional molecular cage structure; and further links the crown ether on the side of the molecular cage, increases the crown ether loading amount, and enhances the binding effect between the material and the target substance. The crown ether functionalized silica gel material of the invention is used as an adsorbent for cesium adsorption, can achieve high adsorption capacity and selectivity, and has excellent cyclic regeneration ability.

The present application relates to the technical field of soilless cultivation, and specifically discloses a vegetable soilless cultivation seedling and a seedling raising method thereof. The seedling raising method of the vegetable soilless cultivation seedling comprises the following steps: cleaning and disinfecting the vegetable seeds, soaking the vegetable seeds in a soaking liquid, dark treatment, planting in a soilless cultivation matrix, and obtaining vegetable seedlings. The soilless cultivation matrix includes a solid matrix and a liquid matrix, wherein the solid matrix includes modified rock wool, modified perlite and gravel, and the liquid matrix includes vegetable crop tail vegetables, a fermentation agent, brown sugar, a pH regulator, and a heavy metal ion chelator. The vegetable soilless cultivation matrix prepared in the present application has good water retention, has a certain preventive and therapeutic effect on pests and diseases, and can solve the problem of heavy metal pollution in seedling raising. The seedling raising method used in the present application has a high germination rate of vegetable seeds, strong resistance to pests and diseases, and a good growth state.

The invention belongs to the technical field of foam material preparation, and particularly discloses a lightweight sealing strip microcellular foam material and a production method thereof. The lightweight sealing strip microcellular foam material is prepared from the following raw materials: 80-120 parts of ethylene propylene diene monomer, 40-65 parts of a composite reinforcing agent, 8-15 parts of a foaming agent, 6-12 parts of a plasticizer, 2-6 parts of composite metal salt, 1-5 parts of a vulcanizing agent, 1-5 parts of an accelerant and 1-5 parts of an active agent. According to the lightweight sealing strip microcellular foam material provided by the invention, the ethylene propylene diene monomer is used as a main raw material, and the comprehensive performance of the foam material is ensured by adding the reinforcing agent, the foaming agent, the plasticizer and the like.

The invention discloses a carbon-ceramic brake disc and a preparation method thereof, and relates to the technical field of carbon-ceramic brake discs. Plain cloth is used for replacing non-woven cloth, the strength of a structural part is improved, on the other hand, a friction layer adopts a tire net, the defect that the non-woven cloth on a friction surface is prone to falling off is overcome, the fiber content of the tire net is greatly reduced, and the friction surface is protected. Hydroxyl magnesium silicate with excellent wear resistance is prepared, then hydroxyl magnesium silicate and porous molybdenum disulfide are compounded, and ferroferric oxide is loaded on a porous molybdenum disulfide-hydroxyl magnesium silicate compound by adding ferric trichloride and ferric chloride tetrahydrate, so that the wear resistance of the material is improved, and the wear resistance of the material is improved. And the strength and wear resistance of the carbon-ceramic brake disc are further improved.

This application belongs to the technical field of metal passivating agents, specifically providing a composite metal passivating agent and its preparation method, including the following steps: magnesium carbonate and barium carbonate are mixed, dissolved in nitric acid, and then the pH is adjusted to 5.5-6.3. After heating, enzymatically hydrolyzed peptides, alkylated cyclodextrin, and diisooctyl phosphate are added, and the mixture is stirred to obtain the final product. The enzymatically hydrolyzed peptides are obtained by purifying soybean meal through hydrolysis with a complex protease. The alkylated cyclodextrin is obtained by modifying cyclodextrin with a silane coupling agent. The composite metal passivating agent prepared in this application has a good synergistic effect and can improve the activity of the catalyst.

The invention discloses a preparation method of a concrete mixture water molecule migration inhibitor. The preparation method comprises the following steps: (1) mixing sephadex and xanthan gum, weighing the mixture, adding the mixture into an aqueous solution of phosphate, and stirring until the mixture is completely dissolved to form a water-retaining solution; (2) weighing a water-retaining solution, putting the water-retaining solution into a stirring device, increasing the rotating speed to be not less than 6000 r / min, slowly adding the modified sodium alginate microspheres, uniformly stirring, extracting the modified sodium alginate microspheres from the stirring device, and standing until the solution is stable to form a concrete mixture water molecule migration inhibitor; the modified sodium alginate microspheres take magnesium hydroxide as a porous structure, and pores are filled with sodium alginate and magnesium sulfate. By adopting the inhibitor, approximate laminar motion is controlled in the early stage of mixture coagulation, diffusion motion is controlled in the later stage of coagulation, internal free water is effectively controlled to excessively migrate to the surface, and adverse effects of migration of water molecules on concrete strength and apparent quality are avoided.

The invention discloses a nonionic high-molecular polymer and application thereof in saline-alkali soil improvement, and relates to the technical field of soil improvement. The preparation method of the non-ionic high-molecular polymer comprises the following steps: mixing water, acrylamide, fatty alcohol-polyoxyethylene ether and siloxane, adjusting the temperature to 20-35 DEG C, adding the redox initiation composition, carrying out polymerization reaction for 2-5 hours, heating to 50-75 DEG C, carrying out heat preservation for 0.5-2 hours, and drying the product to obtain the non-ionic high-molecular polymer. Specific monomers are copolymerized according to a certain proportion to obtain the nonionic high-molecular polymer, and the obtained nonionic polymer has remarkable salt and alkali reducing effects when being applied to saline-alkali soil.

The invention provides a method for preparing 1, 4-cyclohexanedicarboxylic acid through continuous hydrogenation of terephthalic acid. The method comprises the following steps: mixing a reaction raw material terephthalic acid, a cosolvent 1, 4-cyclohexanedicarboxylic acid and a reaction solvent water at a preset temperature to obtain a mixed material; the mixed material is conveyed to a trickle bed reactor, terephthalic acid in the mixed material is subjected to a hydrogenation reaction in the presence of a catalyst and under preset hydrogenation reaction conditions, 1, 4-cyclohexanedicarboxylic acid is prepared, the catalyst comprises carrier modified activated carbon and an active component palladium loaded on the carrier, and the active component palladium is palladium loaded on the carrier. The activated carbon carrier is sequentially subjected to nitric acid treatment, thionyl chloride treatment and organic amine grafting to obtain the amino compound modified activated carbon carrier. According to the invention, the organic amine is grafted to the activated carbon through a chemical method to modify the activated carbon, so that the dispersity of palladium is improved, the interaction between a carrier and palladium is enhanced, and the activity and stability of the catalyst are improved.

The invention provides a metal corrosion inhibitor, a preparation method of the metal corrosion inhibitor, a pickling reagent and application of the pickling reagent, the metal corrosion inhibitor is applied to metal corrosion inhibition, and the structure of the metal corrosion inhibitor is as shown in a formula I: # imgabs0 #, r1 is one of an alkyl group of C1 to C16, an alkylene group of C2 to C16, a cyclic group of C5 to C16, an aryl group of C6 to C16, an alkyl group of C1 to C16 carrying a substituent group, an alkylene group of C2 to C16 carrying a substituent group, a cyclic group of C5 to C16 carrying a substituent group and an aryl group of C6 to C16 carrying a substituent group; and the metal corrosion problem is effectively relieved, the effect is remarkable, and the method is worthy of popularization.

The present invention belongs to the technical field of organic synthesis, and specifically relates to a new β-diketone compound, the structure of which is shown in formula (I), and the enol conformation structure of which is shown in formula (II): #imgabs0# In formula (I) and formula (II), R is CH3 or H. The β-diketone compound of the present invention can be used as an extractant, a co-extractant, and a diluent to be applied in a metal lithium extraction system, and the extraction system using the present invention as an extractant has excellent lithium extraction ability and good hydrophobicity, which can reduce the economic cost of lithium extraction, reduce the discharge of organic phase in water resources, and reduce the risk of pollution to environmental water resources.

The application belongs to the technical field of fertilizers, and provides a preparation method of modified fulvic acid and application of the modified fulvic acid in fertilizers.The preparation method of the modified fulvic acid comprises the following steps: step 1, dissolving fulvic acid in deionized water, ultrasonic activation, after reaction, drying to obtain activated fulvic acid; step 2, dissolving the activated fulvic acid in a sodium hydroxide solution, heating to 40-45 DEG C for 10-15 min, after cooling, adjusting pH, adding a polymer monomer and an initiator, heating to 40-45 DEG C for 3-3.5 h, and drying to obtain modified fulvic acid. The application introduces new functional groups, such as amide groups, into fulvic acid molecules through chemical reactions, so as to enhance the chelating capacity or adsorption performance of the fulvic acid on specific nutrient elements, thereby effectively preventing the fixation of the elements in soil, and improving the absorption efficiency of the elements by plants.

The present invention discloses a phosphorylated protein-based gypsum retarder and a preparation method thereof, and belongs to the technical field of building material retarders. The present invention reacts a phosphate group with a hydroxyl group on a protein product to prepare a phosphorylated protein-based gypsum retarder. Phosphorylation increases the calcium chelating ability of the protein product. In view of the key role of the chelation of calcium ions in the gypsum system by the protein polypeptide in the gypsum system in the retardation of gypsum, the phosphorylated protein-based gypsum retarder prepared by the present invention can more effectively inhibit the hydration of hemihydrate gypsum and the production of dihydrate gypsum by chelating more free calcium ions in the gypsum system, thereby producing a longer-lasting retarding effect on the gypsum, while avoiding the loss of mechanical strength of the gypsum. In addition, the phosphorylated protein-based gypsum retarder prepared by the present invention can effectively improve the fluidity of the gypsum slurry, which is beneficial to the self-leveling construction of the gypsum slurry.

The invention discloses a saline-alkali soil conditioner and a method for improving saline-alkali soil by using the saline-alkali soil conditioner, and relates to the technical field of soil improvement. The saline-alkali soil conditioner is prepared from desulfurized gypsum, furfural residues, diatomite, boric acid, a compound microbial agent and a specific nonionic macromolecular polymer, and specific monomers are copolymerized at a certain ratio to obtain the nonionic macromolecular polymer; furthermore, the nonionic polymer and other improved components are combined and applied to the saline-alkali soil, so that the remarkable salt and alkali reducing effects are achieved.