217 results about "Cobalt acetate" patented technology

The invention relates to the technical field of rubber additives, in particular to a cross-linking agent for rubber and a preparation method. The cross-linking agent for rubber is prepared from the following raw materials in parts by mass: 5 to 10 parts of polystyrene microspheres, 1 to 5 parts of tetramethyl orthosilicate, 0.1 to 0.5 part of copper sulfate, 1 to 2 parts of a surfactant, 1 to 2 parts of vinyl trimethoxy silane, 0.01 to 0.1 part of an initiator, 2 to 6 parts of vinyl acetate, 1 to 2 parts of cobalt acetate, 0.01 to 0.1 part of yttrium chloride and 1 to 2 parts of graphene oxide. Transition metal salt and rare earth are compounded and loaded on the surface of grafted silicon dioxide, the specific surface area of the metal salt can be effectively increased, the coordination efficiency is improved, the adding amount of the metal salt is reduced, meanwhile, self-repairing of crosslinking and reinforcing functions can be effectively achieved, and the crosslinking agent is high in stability and has higher environmental tolerance.

The invention relates to a nickel-free hole sealing agent and a preparation method thereof, and belongs to the technical field of high polymer materials. The nickel-free hole sealing agent comprises the following components in parts by weight: 3-10 parts of cobalt acetate, 1-11 parts of a corrosion-resistant modifier, 1-6 parts of ethylenediamine tetraacetic acid, 3-7 parts of sodium silicate and 5-15 parts of deionized water, an intermediate product containing bis-imidazoline in the corrosion-resistant modifier is tightly adsorbed on the metal surface by virtue of electrostatic attraction and a large pi bond to form a tough protective film, so that a water-phase corrosive medium is effectively isolated, the corrosion speed is remarkably reduced, and meanwhile, the corrosion-resistant modifier has good heat-resistant stability and still has a corrosion inhibition effect in a high-temperature environment; the glycine enables the nickel-free hole sealing agent to better fill tiny holes in the metal surface, so that the surface is flat and smooth, and uniform distribution and permeation of the hole sealing agent are promoted; quaternary ammonium salt destroys cell walls and cell membranes of microorganisms and inhibits growth and reproduction of the microorganisms; the nickel-free hole sealing agent prepared by the invention not only has a good antistatic effect, but also has excellent high-temperature-resistant and antibacterial effects.

The invention belongs to the technical field of antibiotic degradation, and particularly relates to a preparation method and application of a surface hydroxylation monatomic catalyst with a Co-O-Zn structure. Zinc acetate and cobalt acetate are used as metal sources, dimethylimidazole is used as a ligand, mixing reaction is carried out in a solvent, centrifugal washing, drying and calcining are carried out, the surface hydroxylation monatomic catalyst with a Co-O-Zn structure is prepared, the surface hydroxylation monatomic catalyst has an asymmetric Co-O-Zn configuration, a large number of hydroxyl groups exist on the surface, and the surface hydroxylation monatomic catalyst has the advantages that the surface hydroxylation monatomic catalyst has a good application prospect. The asymmetric coordination structure of Co-O-Zn can optimize the adsorption behavior of an oxidizing agent, effectively adjust the interaction of metal sites and the electronic structure in the catalysis process, significantly enhance the catalytic reaction, and have strong ability to resist the interference of external inorganic ions and organic matters.

The invention relates to a spinel / layered composite phase modified lithium-rich manganese-based positive electrode material and a preparation method thereof. The preparation method comprises the following steps: adding lithium acetate, manganese acetate, cobalt acetate and nickel acetate into deionized water, and proportioning according to a general formula LiNixCoyMnzO2 * Li2MnO3 (x + y + z = 1, 0.5 < = xlt, 0.75, 0.2 < = ylt, 0.25, 0 < = z < = 0.3) to obtain a salt solution; precursor powder is prepared through a spray pyrolysis method; carrying out high-temperature calcination treatment on the precursor powder to obtain powder; adding conductive active carbon into the powder, and carrying out ball milling in absolute ethyl alcohol; and drying the ball-milled material in a blast drying oven, and standing to obtain spinel / layered composite phase modified lithium-rich manganese-based positive electrode material powder. The charge transport characteristic and the dynamic performance of the lithium-rich manganese-based positive electrode material are improved, so that the median voltage of the positive electrode material is greatly improved to 3.78 V, and meanwhile, the overall stability of the positive electrode material is greatly improved. The finally prepared button cell shows excellent cycling stability, and within the voltage of 2-4.8 V, the average median voltage decline of each cycle is 1.15 mV after 400 cycles of 1C current; and meanwhile, the synthesis steps are simple and convenient, and the lithium-rich manganese-based positive electrode material can be prepared by adopting conventional equipment.

The invention relates to a preparation method and application of a lithium-rich manganese oxide positive electrode material with high capacity and long cycle stability, and the method comprises the following steps: mixing lithium acetate dihydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate, manganese acetate tetrahydrate and citric acid monohydrate, adding into deionized water, uniformly stirring, adding oleic acid to prepare a precursor solution, and carrying out spray drying to prepare a precursor material; and carrying out heat treatment on the precursor material in an air atmosphere to prepare the lithium-rich manganese oxide positive electrode material Li < 1.2 > Ni < 0.13 > Co < 0.13 > Mn < 0.54 > O < 2 > with high capacity and long cycle stability. The lithium-rich manganese-based positive electrode material has the advantages that the lithium-rich manganese-based positive electrode material compositely modified by oleic acid and citric acid is simple in process, a spinel phase with high lithium ion conductivity is generated, and the lithium-rich manganese-based positive electrode material has high specific capacity and excellent cycle performance under high current density when being applied to a positive electrode of a lithium ion battery.

The invention belongs to the technical field of catalysts, and discloses a cobalt-nitrogen-oxygen composite modified lignin carbon catalyst as well as a preparation method and application thereof. The molecular formula is Co-Co3O4 (at) NC. The preparation method comprises the following steps: S1, dipping and stirring lignin powder, an N source and water at normal temperature to obtain a turbid solution; s2, after the turbid liquid is precipitated, evaporating to dryness, and drying to obtain a solid; s3, grinding the solid into powder, calcining for 1.5-2.5 hours at 700-900 DEG C in an inert atmosphere, grinding, washing with water, and drying to obtain NC; s4, after fully grinding NC, dipping and stirring NC together with cobalt acetate, zinc acetate and an alcohol solvent at normal temperature to obtain a turbid solution; s5, after the turbid liquid is precipitated, evaporating to dryness the alcohol solvent, and drying to obtain a solid; s6, grinding the solid into powder, and calcining the powder for 1.5-2.5 h at 890-950 DEG C in an inert atmosphere to obtain Co-coated NC; and S7, sufficiently grinding the Co-coated NC, paving the Co-coated NC, and carrying out heat preservation for 21-23 hours at the temperature of 150-250 DEG C in an air or oxygen atmosphere to obtain the Co-Co3O4-coated NC. The catalyst is low in preparation cost and high in catalytic activity, and the average rate of catalyzing NH3BH3 to hydrolyze and produce hydrogen reaches 3302 mL * min <-1 > * gCo <-1 >.

The invention discloses a preparation method of atomic layer deposition synergistic doping modified sodium vanadate, which uses water as solvent, anhydrous sodium iodide and monohydrated vanadium oxyphosphate as sodium source, vanadium source and phosphorus source, and introduces cobalt acetate tetrahydrate and nickel acetate tetrahydrate, and realizes one-step hydrothermal synthesis of HNaV6O assembled by nanosheets and co-embedded with cobalt ions, nickel ions and phosphate ions by synergistically controlling their concentration and ratio, reaction temperature, reaction time and other parameters. 16 ·4H2O nanoflower structure. This method has a simple reaction process, low temperature, easy control, and does not require large equipment and harsh reaction conditions. On this basis, the atomic layer deposition technology was used to successfully realize the cobalt ion, nickel ion and phosphate ion co-embedded HNaV6O with ultra-thin nanoscale metal oxides. 16 Uniform coating of 4H2O positive electrode material. The present invention provides the application of the material in the positive electrode material of sodium ion battery.

This invention belongs to the field of lithium-ion battery technology, specifically relating to a method for constructing Si@COF-Co materials using porphyrin COF as a conductive nano-protective layer for nano-silicon and its application. The invention first adds a methanol solution of PEI to a methanol solution of nano-silicon, then dries it at high temperature to obtain PEI-modified nano-silicon Si-PEI. Next, Si-PEI and PVP are dispersed in o-dichlorobenzene / n-butanol, and then COF monomer and glacial acetic acid are added. After maintaining the mixture at 110-130℃ for 70-80 hours, it is washed, dried, and ground to obtain Si@COF. Finally, Si@COF and cobalt acetate tetrahydrate are dispersed in methanol, reacted at room temperature, and then washed, dried, and ground to obtain Si@COF-Co. This invention offers a simple, high-yield, and effective method. The synthesized material effectively alleviates the volume expansion of nano-silicon, improves the stability and reversibility of the electrode material, and can be used as a negative electrode material for lithium-ion batteries.

The invention discloses a normal-temperature manganese composite catalyst, a preparation method and application, and mainly relates to the technical field of manganese-containing catalysts. Compared with the prior art, the normal-temperature manganese composite catalyst disclosed by the invention realizes efficient broad-spectrum catalytic decomposition of toxic and harmful gases through the synergistic effect of manganese nitrate, manganese carbonate, manganese acetate, ferric nitrate, cerous nitrate and cobalt acetate metal salts; phosphoric acid modified vanadium dioxide and titanium nitride are compounded to serve as a catalyst carrier, the thermal stability and the specific surface area of the catalyst are enhanced, dispersity of metal active components on the catalyst carrier is further optimized through loading of nickel acetylacetonate, firm combination of the active components and the carrier is guaranteed through high-temperature calcination, and the catalytic activity of the catalyst is improved. The prepared catalyst has a high specific surface area and an optimized pore structure, can catalytically decompose various gaseous pollutants at normal temperature, better realizes an air purification effect, and remarkably improves the air purification effect.

The invention discloses a self-supporting carbon electrode based on a wood-bamboo material, a preparation method of the self-supporting carbon electrode and application of the self-supporting carbon electrode in manufacturing of a supercapacitor electrode. The preparation method comprises the following steps: (1) fully carbonizing wood and bamboo chips with through pores in an inert atmosphere to obtain wood and bamboo carbon chips; (2) soaking foamed nickel in a solution containing cobalt acetate and nickel acetate, then taking out and airing, wrapping the wood-bamboo carbon sheet, and extruding the foamed nickel under the pressure of 5-15kN / m < 2 > to enable the foamed nickel to be in full contact with all the surfaces of the wood-bamboo carbon sheet; and (3) fixing the foamed nickel-coated wood-bamboo-carbon sheet obtained in the step (2) on a first conductive support as a working electrode, placing the working electrode, a counter electrode and a reference electrode in a molten salt electrolyte in an inert atmosphere for electrolysis, applying a voltage of-2.1 to-2.3 V to the working electrode, carrying out electrolysis for 8-12 hours to realize pore forming and graphitization, and after the electrolysis is completed, taking out the foamed nickel-coated wood-bamboo-carbon sheet. And taking out the wood-bamboo carbon sheet sample from the foamed nickel, washing and drying to obtain the self-supporting carbon electrode.

The invention discloses a preparation method of a bimetallic MOF modified nanofiber membrane with antibacterial performance, which comprises the following steps: 1) adding polyacrylonitrile and a pore-foaming agent into an organic solvent, uniformly stirring and mixing at room temperature, carrying out electrostatic spinning to obtain primary fibers, soaking the primary fibers to remove the pore-foaming agent, and drying to obtain a polyacrylonitrile nanofiber membrane; (2) putting the polyacrylonitrile nanofiber membrane into a Tris-HCl buffer solution of dopamine hydrochloride to carry out self-polymerization reaction, and then washing and drying a product to obtain a dopamine modified polyacrylonitrile nanofiber membrane; and 3) immersing the modified membrane in a mixed solution of cobalt acetate and zinc nitrate, reacting at room temperature, then immersing the fiber membrane in an organic ligand solution for full reaction, washing with deionized water, and drying to obtain a target product. The antibacterial rate of the bimetal MOF modified nanofiber membrane prepared by the method can reach 60% or above within 1 h, the antibacterial rate of the bimetal MOF modified nanofiber membrane prepared by the method reaches 99.9% within 24 h, and the purpose of fast and efficient antibacterial is achieved.

The invention discloses a synthesis method of 5-bromoindole-2-carboxylic acid methyl ester, and the synthesis route comprises the following steps: S1, taking 2-iodo-4-broronitrobenzene and dimethyl malonate as raw materials, and under the catalysis of a solid sulfonic acid resin catalyst, carrying out nucleophilic substitution reaction to prepare 2-(5-bromo-2-nitrophenyl) dimethyl malonate; s2, taking the dimethyl 2-(5-bromo-2-nitrophenyl) malonate prepared in the step S1 as a raw material, taking a ZSM-5 molecular sieve loaded with cobalt acetate as a catalyst, and introducing hydrogen for reduction reaction to prepare a 5-bromoindole-2-carboxylic acid methyl ester crude product; and S3, carrying out recrystallization on the 5-bromoindole-2-carboxylic acid methyl ester crude product prepared in the step S3 by using ethanol, so as to prepare a 5-bromoindole-2-carboxylic acid methyl ester pure product. The synthesis yield is relatively high, the environmental protection property is relatively good, and the prepared 5-bromoindole-2-carboxylic acid methyl ester is relatively excellent in quality and relatively low in cost.

The preparation method comprises the following steps: mixing cobalt acetate, a modified ligand, a modified additive and DMF (Dimethyl Formamide), carrying out ultrasonic treatment, adding deionized water and a modified filler, carrying out ultrasonic treatment, carrying out heating reaction, carrying out centrifugation to remove a supernatant, and carrying out drying treatment to prepare the rapid-charge high-capacity artificial graphite negative electrode material, when the cobalt acetate, the modified ligand, the modified additive and the modified filler are subjected to blending reaction, carboxyl on the modified ligand and carboxyl on the modified additive can form coordinate bonds with cobalt ions of the cobalt acetate, then a cobalt metal organic framework is formed on the surface of the modified filler, and a fluorine element in the modified ligand can react with lithium to form lithium fluoride; electron penetration is effectively blocked, and side reactions are reduced; the lithium ion diffusion energy barrier is reduced, rapid charging and discharging are achieved, pyridine groups on the surface of the modified filler can provide lone pair electrons and serve as binding sites of lithium ions, pseudocapacitance is formed, and then the capacity is increased.

The invention belongs to the technical field of hole sealing reagents, and discloses a high-color-fixation medium-temperature hole sealing agent for an aluminum alloy anodic oxide film as well as a preparation method and application of the high-color-fixation medium-temperature hole sealing agent. The medium-temperature hole sealing agent comprises hole sealing main salt, hole sealing auxiliary salt, a color fixing auxiliary agent and an auxiliary agent, the hole sealing main salt comprises nickel acetate or nickel acetate hydrate; the hole sealing secondary salt comprises at least one of cobalt acetate, magnesium acetate, lithium acetate and calcium acetate; the color fixing auxiliary agent comprises at least one of tannic acid, gallic acid, quercetin, ellagic acid, tannic acid and catechin. According to the medium-temperature hole sealing agent, hole sealing of the aluminum alloy oxidation film is achieved under the medium-temperature (55-65 DEG C) condition, meanwhile, the color fixing process of dye molecules in micropores of the oxidation film is synchronously completed through the effect of the specific color fixing auxiliary, and the problems of uneven hole sealing and color fading caused by a separation technology are solved. And after the hole sealing agent is used for treatment, the binding force of the dye and an oxidation film can be enhanced, and the dye is not easy to fade in a high-temperature and high-humidity environment for a long time.

The invention discloses a cobalt-based catalytic material for efficiently activating persulfate to degrade antibiotics and a preparation method of the cobalt-based catalytic material. The catalytic material is prepared by taking an H-Beta zeolite molecular sieve as a carrier, loading cobalt ions on the molecular sieve through an impregnation method and then carrying out high-temperature roasting treatment. The preparation method comprises the following steps: preparing a cobalt acetate tetrahydrate solution, adding an H-Beta zeolite molecular sieve into the solution to carry out ion exchange, and then carrying out drying and high-temperature roasting. The prepared catalytic material has highly dispersed cobalt active sites and excellent structural stability and catalytic activity. Compared with the prior art, the catalyst provided by the invention has the advantages of simple preparation process, lower cost, high catalytic efficiency, good stability, low cobalt ion dissolution rate, easiness in recovery and reuse and the like, and has a good practical application prospect.

The invention discloses a simple high-throughput preparation method of spinel type nano high-entropy oxide, which comprises the following steps: 1) dissolving ferric nitrate, cobalt acetate, nickel acetate and at least two other different metal salts in a solvent to form a feed liquid A; 2) dissolving a precipitant in the same solvent as the solvent in the step 1) to form feed liquid B; 3) starting the supergravity reactor; 4) simultaneously introducing the feed liquid A and the feed liquid B into a supergravity reactor through a peristaltic pump to carry out a coprecipitation reaction, and obtaining a high-entropy oxide precursor solution after the reaction; 5) centrifuging and washing the high-entropy oxide precursor solution, and dispersing the high-entropy oxide precursor solution in water to obtain a clean precursor solution; 6) introducing the clean precursor solution into a hydrothermal kettle for hydrothermal reaction, and obtaining a nano high-entropy oxide solution after the reaction; and 7) carrying out alcohol washing on the nano high-entropy oxide solution, and drying to obtain the nano high-entropy oxide. The prepared oxide is high in quality, the particle size is 10-100 nm, and the oxide still has good dispersity under the condition that a modifier is not added.

The invention provides a phosphorus-doped CoFe-LDH electrode for high-current hydrogen production as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing foamed nickel subjected to acid pickling treatment with a red phosphorus solution, and carrying out hydrothermal reaction to obtain NiP; the preparation method comprises the following steps: immersing NiP into a mixed solution of cobalt acetate tetrahydrate and 2-methylimidazole to obtain Co-ZIF-L-coated NiP; and the Co-ZIF-L (at) NiP is immersed in a ferrous sulfate tetrahydrate solution, and the CoFe-LDH (at) NiP-120 electrode is obtained through heating. An anion exchange membrane water electrolysis device (AEM) based on the electrode shows remarkable activity when the voltage is 1.85 V, the current density reaches 100 mA cm <-2 >, and obvious performance degradation does not occur when the AEM stably operates for 70 h under the large current density of 100 mA cm <-2 >. Compared with an existing electrolyzed water electrode, the method has the characteristics that active sites are accurately regulated and controlled, the structural stability is improved, and the process cost is reduced.

The invention relates to a preparation method of a high-stability PtCoIn ternary alloy fuel cell cathode catalyst, and belongs to the field of new energy nanometer materials and the technical field of catalysis. The invention aims to solve the problems of poor stability and the like caused by easy dissolution of metal elements in a fuel cell working environment of a Pt-based catalyst. According to the main scheme, Co ions coordinated by 1, 10-phenanthroline are adsorbed on a BP2000 (Cabot) carbon carrier by adopting an impregnation method, then high-temperature carbonization is performed to obtain a modified Co-N-C carrier, then the modified Co-N-C carrier is placed in an aqueous solution in which chloroplatinic acid H2PtCl6. 6H2O, cobalt acetate tetrahydrate Co (Ac) 2.4 H2O and indium nitrate hydrate In (NO3) 3. XH2O are dissolved, after impregnation and metal ion adsorption, high-temperature pyrolysis and acid etching are performed, and the Co-N-C carrier is obtained. And removing the unreacted metal precursor and transition metal elements on the surface of the Pt alloy, and finally performing low-temperature carbonization to obtain the small-size, highly-dispersed and highly-stable PtCoIn ternary alloy fuel cell cathode catalyst with a Pt atomic layer structure on the surface.

The invention relates to the technical field of hydrogen production through electro-catalytic decomposition of water, in particular to an S-(FeNiM) LDH / IF electro-catalyst, a preparation method and application thereof.The M is Co or In, the electro-catalyst is a three-dimensional lamellar nanosheet structure sheet, cobalt acetate (or indium chloride), nickel acetate and foam iron are used as raw materials, and the S-(FeNiM) LDH / IF electro-catalyst is prepared through a one-step method. The preparation method comprises the following steps: dissolving cobalt acetate and nickel acetate in H2O and ethanol at the temperature of 25 DEG C, reacting for 30 minutes, slowly adding a Na2S solution, continuously reacting for 30 minutes, slowly dropwise adding a NaOH solution, reacting for 30 minutes, heating to 80 DEG C, and reacting for 2.5 hours to obtain the composite material S-(FeNiM) LDH / IF (M = Co, In) with a layered nanosheet structure. An electrolytic tank (S-(FeNiCo) LDH / IFS-(FeNiIn) LDH / IF) is formed by taking the prepared S-(FeNiCo) LDH / IF composite material as an anode and taking the prepared S-(FeNiIn) LDH / IF composite material as a cathode, and is used for electrolyzing water, and a good catalytic effect is achieved.

The present invention discloses a preparation method of cobalt-doped and synergistically MXene-coated sodium vanadate composite powder. Using water as a solvent, sodium iodide anhydrous and vanadyl phosphate monohydrate as the sodium source and vanadium source, and introducing cobalt acetate tetrahydrate, by synergistically controlling parameters such as concentration and ratio, reaction temperature, reaction time, filling ratio, etc., the synthesis of HNaV6O embedded with cobalt ions assembled by nanosheets through a one-step hydrothermal method is achieved. 16 Using CTAB, the etched Ti3C2Tx and HNaV6O 16 ·4H2O are compositely assembled through electrostatic coupling, and finally cobalt-doped and synergistically Ti3C2Tx-coated HNaV6O 16 ·4H2O is prepared; the present invention improves the crystal structure and electronic conductivity of HNaV6O 16 ·4H2O, enhances its capacity and cycle stability, and the present invention also discloses the application of this material in the cathode material of sodium-ion batteries.

The invention discloses a preparation method of a metal organic framework catalyst and application of the metal organic framework catalyst in biomass furfural hydrogenation, and belongs to the technical field of catalytic hydrogenation. The preparation method of the metal organic framework catalyst comprises the following steps: S1, dissolving cobaltous acetate, L-glutamic acid and phosphomolybdic acid in distilled water to obtain a solution marked as a solution A; dissolving 1, 3, 5-benzenetricarboxylic acid (BTC) in ethanol to obtain a solution B, pouring the solution B into the solution A, stirring, and centrifuging to collect a precipitate; and S2, calcining the precipitate in an inert atmosphere to obtain the metal organic framework catalyst. The specific steps of applying the catalyst to the furfural hydrogenation reaction are as follows: adding the prepared catalyst and furfural into deionized water, performing heating and pressurizing reaction through a hydrogenation reaction kettle to obtain a solution, extracting the solution with ethyl acetate, and performing GC quantitative detection on the product after the extraction reaction. The method is mild in reaction condition, has an efficient furfural hydrogenation effect, and can completely convert FFA within 2 hours under the condition that 50 mg of catalyst is added.

The application provides a method for improving the yield of oxygen-containing compounds in low-rank coal-derived soluble matters, and belongs to the technical field of low-rank coal pretreatment, and comprises the following steps: first, performing ozone oxidation pretreatment on low-rank coal to obtain modified low-rank coal; using cobalt acetate, copper acetate and iron acetylacetonate as a cobalt source, a copper source and an iron source respectively, using hydrazine hydrate as a strong reducing agent, and using a one-pot hydrothermal method to obtain magnetic Co-CuFe2O4 nanospheres; and using the prepared Co-CuFe2O4 nanosphere catalyst to perform catalytic ethanolysis reaction on the low-rank coal subjected to ozone oxidation pretreatment. In the application, appropriate ozone oxidation pretreatment can effectively improve the activity of the low-rank coal, and when the magnetic Co-CuFe2O4 nanospheres are applied to catalytic ethanolysis reaction of the low-rank coal subjected to ozone oxidation pretreatment and catalytic ethanolysis reaction of low-rank coal-related model compounds, the magnetic Co-CuFe2O4 nanospheres all exhibit excellent catalytic activity, higher-yield soluble components can be obtained, the yield of oxygen-containing compounds in the derived soluble matters is improved, and efficient and high-value utilization of the low-rank coal is realized.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a method for constructing a Si (at) COF-Co material by taking porphyrin COF as a nanometer silicon conductive nanometer protective layer and application of the Si (at) COF-Co material. The preparation method comprises the following steps: firstly, adding a methanol solution of PEI into a methanol solution of nano silicon, and then drying at high temperature to prepare PEI modified nano silicon Si-PEI; then dispersing Si-PEI and PVP in o-dichlorobenzene / n-butyl alcohol, then adding a COF monomer and glacial acetic acid, keeping at 110-130 DEG C for 70-80 hours, and then washing, drying and grinding to obtain Si (COF); and finally, dispersing the Si-coated COF and cobalt acetate tetrahydrate in methanol, reacting at room temperature, washing, drying and grinding to obtain the Si-coated COF-Co. The method is simple and convenient, the yield is high, the effect is good, the compound can effectively relieve volume expansion of nano silicon, the stability and reversibility of an electrode material are improved, and the compound can be used as a lithium ion battery negative electrode material.

The invention relates to an in-situ growth silicon carbide whisker reinforced carbon aerogel composite material and a preparation method thereof, and belongs to the field of thermal protection materials. The problems that an existing carbon aerogel material is low in mechanical property and insufficient in high-temperature stability, the basic performance (such as heat insulation performance and low density) of the existing carbon aerogel material is reduced when the mechanical property is improved, the preparation technology is complex, and the cost is high are solved. The preparation method comprises the following steps: carrying out condensation reaction on epoxy modified phenolic resin and siloxane to obtain organic silicon hybrid phenolic resin; adding nickel chloride, ferric chloride and cobaltous acetate as catalysts into the organic silicon hybrid phenolic resin in batches; resin liquid is obtained; and curing, drying and carbonizing the resin liquid in sequence. The mechanical property of the carbon aerogel material is improved, the high-temperature stability and heat insulation performance are excellent, and low density and light weight are guaranteed.

This invention discloses a method for coupling physicochemical treatment and biodegradation of plastics. The method includes the following steps: S1. Mixing plastics, organic solvents, and a metal catalyst, and reacting to degrade them to obtain organic products. The metal catalyst is cobalt acetate and / or manganese acetate; S2. Biodegrading the organic products from step S1 using a mixed colony, which includes *Pseudomonas*, *Bacillus*, *Flavobacterium*, and *Rhodococcus*. This invention uses cobalt acetate and / or manganese acetate as metal catalysts. The catalytic oxidation of the metal catalyst can efficiently depolymerize traditional plastics, overcoming the bottleneck of C-C bond breaking that is difficult for microorganisms to achieve. It can successfully convert plastics into organic products mainly composed of dicarboxylic acids, benzoic acid, and terephthalic acid, and the mixed colony process completely mineralizes the organic products. This method achieves complete removal of plastics without producing any toxic or harmful substances.

The invention discloses a peach ketone synthesis method, which relates to the technical field of essence and perfume synthesis, and comprises the following steps: adding cyclopentanone and glacial acetic acid into a reaction container, starting stirring, adding manganese acetate (II) and cobalt acetate (II), and then adding acetic anhydride; introducing dried air below the liquid level, heating to 80-100 DEG C, dropwise adding D-limonene, and carrying out a heat preservation reaction after dropwise adding is finished; gC monitors the reaction endpoint, and the reaction is stopped when the product purity of the reaction liquid is not increased any more; after the reaction is finished, filtering, carrying out reduced pressure distillation to recover cyclopentanone, glacial acetic acid and unreacted D-limonene, after the recovery is finished, adding methanol and n-heptane into kettle liquid, carrying out water extraction, washing and liquid separation, washing an organic phase with a sodium bicarbonate aqueous solution, carrying out reduced pressure distillation on the organic phase to recover n-heptane, and after the recovery is finished, obtaining a peach ketone crude product; and carrying out crude drawing and rectification on the peach ketone crude product to obtain a peach ketone finished product. The method has the advantages of mild reaction conditions, low safety risk and few three wastes, and can obtain a high-purity peach ketone finished product.

The invention discloses a method for preparing a cobalt single-atom nano-island catalyst and an application for degrading sulfonamide organic pollutants, and relates to the technical field of antibiotic degradation. The present invention dissolves zinc acetate and cobalt acetate in a solvent, adds alkali to the system, obtains a precursor solution, and then hydrothermally reacts the precursor solution at 150-160°C, and obtains a cobalt single-atom nano-island catalyst after drying. The present invention prepares a nano-island-shaped single-atom dispersed catalyst in which cobalt single atoms are confined and dispersed on zinc oxide, and the unique structure can effectively avoid agglomeration and deactivation of cobalt single atoms during the reaction. The cobalt single-atom nano-island catalyst of the present invention can efficiently degrade various sulfonamide organic pollutants, and has a strong ability to resist interference from inorganic ions and organic matter, and has a large application potential for actual wastewater treatment.

The invention belongs to the technical field of antibiotic degradation, and provides a polyoxometallate intercalation MXene material as well as a preparation method and application thereof. The method comprises the following steps: mixing sodium tungstate, sodium silicate and water, reacting the mixed solution with hydrochloric acid, and filtering; reacting the filtrate with a sodium carbonate solution to obtain SiW9; the cobalt acetate solution and the SiW9 solution are subjected to a reaction, and SiW9Co3 is obtained; the preparation method comprises the following steps: reacting lithium fluoride with hydrochloric acid, then reacting with titanium aluminum carbide, mixing the obtained MXene dispersion liquid, dopamine hydrochloride and SiW9Co3, adjusting the pH value, and then reacting to obtain the polyoxometallate intercalation MXene material. Polyoxometallate can enter the interlayer of MXene, the interlayer spacing of MXene is enlarged, dissolution of the polyoxometallate can be reduced, and the stability of the composite material is improved due to introduction of polydopamine; the composite material can realize efficient removal of various antibiotics in the water body.

The invention belongs to the field of metal-organic framework (MOF) material synthesis, and discloses a method for preparing a UTSA-16 material through two-step ball milling and a product. The method comprises the following steps: putting citric acid and potassium hydroxide into a ball mill for ball milling; adding metal acetate into the ball mill, mixing the metal acetate with the obtained product, carrying out ball milling again, and then washing and drying the obtained product to obtain a UTSA-16 material; the metal acetate is zinc acetate or a combination of zinc acetate and one of cobalt acetate, magnesium acetate and copper acetate. According to the efficient and green method for preparing the high-quality UTSA-16 material, citric acid and potassium hydroxide are subjected to ball milling to prepare potassium citrate, then mechanical energy generated by ball milling is utilized again to promote the potassium citrate and metal acetate to be subjected to a coordination reaction, the ion concentration in the raw materials in the reaction process is higher, and the yield is higher. The method has the advantages of high synthesis efficiency, high yield and the like, and the preparation process has the advantages of mild reaction conditions, low energy consumption, greenness, high efficiency and the like.

The invention discloses a nickel-cobalt bimetallic nanoparticle material for synthesizing tetrahydrofurfuryl alcohol through full hydrogenation as well as a preparation method and application of the nickel-cobalt bimetallic nanoparticle material. The method comprises the following steps: dissolving nickel acetate tetrahydrate and cobalt acetate tetrahydrate in absolute ethyl alcohol, carrying out ultrasonic treatment, adding an ethanol solution in which polyvinylpyrrolidone is dissolved, carrying out ultrasonic treatment, putting into a preheated oil bath pan, standing, refluxing, centrifuging, and taking precipitate, so as to obtain NiCo-precursor; the preparation method comprises the following steps: adding NiCo-precursor and dopamine hydrochloride into an ethanol solution of tris (hydroxymethyl) aminomethane, putting into an oil bath pan, uniformly stirring, centrifuging, washing and drying to obtain NiCo (at) PDA; and calcining in an inert atmosphere to obtain the catalyst. The nickel-cobalt bimetallic nanoparticle material is simple in preparation process, mild in reaction condition, high in catalyst activity, easy to separate and good in cycling stability, and is expected to show good application potential in industrial application.