141 results about "Manganous chloride" patented technology

The invention relates to a sludge biochar modified layered bimetallic oxide, and a preparation method and application thereof. The modified layered bimetallic oxide is prepared from the following main raw materials: domestic sewage aeration tank sludge, NaOH, Na2CO3, FeCl3. 6H2O and MnCl2. 4H2O. The domestic sewage aeration tank sludge is used for preparing dry sludge, the ferric chloride solution and the manganese chloride solution are used for preparing sludge composite layered double hydroxides, and the final layered bimetallic oxide composite sludge biochar catalyst can be prepared by calcining the sludge composite layered double hydroxides. The modified layered bimetallic oxide prepared by the scheme of the invention can effectively degrade bisphenol A, has relatively strong reusability, and still keeps good degradation ability in a relatively wide pH environment.

The invention provides a synthesis method of a bromide ion adsorbent for salt lake bromine extraction, and belongs to the technical field of adsorbent preparation, a mixed solution of strontium chloride and manganese chloride and a mixed solution of sodium phosphate and sodium hydroxide are subjected to precipitation reaction to obtain A-Sr4Mn6 (PO4) 6 (OH) 2; the preparation method comprises the following steps: reacting A-Sr4Mn6 (PO4) 6 (OH) 2 with a sodium bromide solution to obtain B-Sr4Mn6 (PO4) 6Br2; and reacting the B-Sr4Mn6 (PO4) 6Br2 with a sodium hydroxide solution to obtain Sr4Mn6 (PO4) 6 (OH) 2, namely the bromide ion adsorbent. The prepared adsorbent can selectively adsorb bromide ions from high-salt brine, and has the advantages of high adsorption capacity, high selectivity, high recyclability and the like; in brine with extremely high chloride ion concentration, low-concentration bromide ions can be selectively adsorbed without being influenced by high-concentration chloride ions; in a high-salt water body, the adsorption capacity on bromide ions is higher; the selective adsorption separation of the chloride ions and the bromide ions is realized.

The invention discloses a catalytic material for self-circulation photocatalytic Fenton and a preparation method thereof, and relates to the technical field of catalytic materials, the method comprises the following steps: adding thioacetamide into a manganese chloride solution, mixing, stirring, adding ammonia water, and reacting at 180-200 DEG C for 18-24 hours to obtain alpha-MnS; the preparation method comprises the following steps: dispersing alpha-MnS in an ethanol solution, then adding thiourea, stirring and mixing, then soaking the foam iron-nickel in the mixed solution, carrying out ultrasonic treatment, and finally reacting for 6-14 hours at 120-140 DEG C to obtain the catalytic material for self-circulation photocatalytic Fenton. The invention also discloses the catalytic material for the self-circulation photocatalytic Fenton, which is prepared by the method. The catalytic material has efficient self-circulation photo-Fenton performance, and has great application value in pollutant degradation and wastewater treatment.

The invention discloses a Chinese wildrye hydroponic nutrient solution as well as a preparation method and application thereof, and belongs to the technical field of plant cultivation. Each liter of the nutrient solution comprises the following components: 80 to 120 mg of ammonium nitrate, 45 to 55 mg of sodium dihydrogen phosphate dihydrate, 80 to 90 mg of potassium sulfate, 110 to 115 mg of anhydrous calcium chloride, 400 to 410 mg of magnesium sulfate heptahydrate, 1.5 to 2.0 mg of manganese chloride tetrahydrate, 0.08 to 0.10 mg of ammonium molybdate tetrahydrate, 1.1 to 1.2 mg of boric acid, 0.02 to 0.05 mg of zinc sulfate heptahydrate, 0.02 to 0.05 mg of copper sulfate pentahydrate, 15 to 35 mg of ferrous sulfate heptahydrate and 20 to 50 mg of disodium ethylene diamine tetraacetate. The hydroponic nutrient solution provided by the invention meets the nutritional requirements of leymus chinensis, seedlings grow quickly and vigorously by utilizing the nutrient solution, the biomass and nutrient content of the overground part are remarkably increased, and the high-quality pasture characteristics of the leymus chinensis are ensured.

The invention relates to the technical field of nano-enzyme preparation and electrochemical and colorimetric dual-mode sensing, and particularly discloses a Mn3Fe2.7-atC nano-enzyme, a preparation method thereof and application of the Mn3Fe2.7-atC nano-enzyme in determination of amoxicillin content. The preparation method of the Mn3Fe2.7 at C nano-enzyme is characterized by comprising the following steps: dissolving manganese chloride and trisodium citrate in water to prepare a solution A; dissolving potassium ferricyanide in water to prepare a solution B; adding the solution B into the solution A under a stirring condition, continuously stirring for 16-32 hours after the solution B is added, carrying out suction filtration, and drying the obtained precipitate to obtain a ferromanganese prussian blue analogue precursor; and placing the ferromanganese prussian blue analogue precursor in a tubular furnace, carrying out pyrolysis, and after the pyrolysis is finished, carrying out acid soaking, washing and drying to obtain the Mn3Fe2.7 at C nano-enzyme. When the Mn3Fe2.7 (at) C nano-enzyme is used for measuring the content of amoxicillin, the accuracy is good, and meanwhile, the Mn3Fe2.7 (at) C nano-enzyme has the advantages of interference resistance, stability, good recovery rate and the like.

The invention relates to the technical field of resource recycling of manganese-containing wastewater, in particular to a process for preparing industrial-grade manganese carbonate by using a recycled manganese chloride solution, which adopts a two-stage purification and impurity removal strategy, performs primary purification and impurity removal by using sodium sulfide and sodium fluoride, and performs secondary impurity removal by using iminodiacetic acid grafted chelating resin. According to the invention, the problems of poor adaptability and incomplete impurity removal of the manganese chloride solution in the prior art are solved, the purity of the product is obviously improved so as to meet the requirements of the industrial grade manganese carbonate, and the process flow is simple.

The invention discloses a method for improving sewage treatment efficiency of a constructed wetland through advanced oxidation by coupling manganese bacteria with peroxydisulfate, which comprises the following steps: firstly, filling biochar and gravel particles into the front end (main body reaction zone 1) of the constructed wetland, and filling the gravel particles into the rear end (main body reaction zone 2) of the constructed wetland; an iron-plated layer graphite rod and a graphite rod are respectively inserted into the filler layer at the front end of the wetland, the iron-plated layer graphite rod is connected with an anode of an external direct-current power supply, and the graphite rod is connected with a cathode of the external direct-current power supply. After being electrified, the iron-plated layer graphite rod releases O2 and Fe < 2 + >. Then, a mixed solution of urban domestic sewage and an isometric peroxydisulfate and manganese chloride solution is used as wetland device inlet water, and degradation of pollutants in the sewage is enhanced through the effects of microorganisms, catalysis, electrolysis, advanced oxidation, adsorption and the like. The invention aims to form a method for improving the sewage treatment efficiency of the constructed wetland according to an electrochemical and manganese bacteria and peroxydisulfate advanced oxidation coupling principle.

The invention relates to a method for plating aluminum on the surface of a neodymium-iron-boron magnetic material, which comprises the following steps: by taking ionic liquid as an electroplating medium, optionally adding manganese chloride, adding a proper amount of additive, controlling the current distribution in the electroplating process through pulse current, and electroplating at proper temperature and current conditions. And a corrosion-resistant aluminum coating with high binding force and high compactness is obtained on the surface of the neodymium iron boron magnetic material. According to the method, the hydrogen evolution reaction is avoided, the bright and uniform aluminum coating is obtained, and the method is environmentally friendly, stable in process and suitable for high-performance surface protection and functionalization of the neodymium iron boron magnetic material.

The invention provides a preparation method of a chlorine salt conversion film with high corrosion resistance, which comprises the following steps: dissolving manganese chloride and calcium chloride in water, then adding ammonium dihydrogen phosphate, sodium nitrate and EDTA (Ethylene Diamine Tetraacetic Acid), and carrying out conversion treatment at 50-60 DEG C for 10-15 minutes to obtain a conversion film solution; placing the conversion film solution in a water bath kettle with the temperature of 50-60 DEG C for heating and heat preservation; the magnesium alloy is put into the conversion film solution to form a film for 10-15 min at the film forming temperature of 50-60 DEG C, and a conversion film is formed on the surface of the magnesium alloy; and taking out the magnesium alloy, washing and drying the conversion film, and characterizing. According to the preparation method of the chlorine salt high-corrosion-resistance conversion film, the preparation cost is low, and the prepared film layer is thick and uniform.

The invention belongs to the technical field of microalgae culture, and particularly provides a haematococcus pluvialis culture medium and a preparation method thereof.The haematococcus pluvialis culture medium is prepared from 1-3 mg / L of sodium acetate, 0.01-1 mg / L of cobalt nitrate hexahydrate, 0.01-1.6 mg / L of copper sulfate, 0.1-1.2 mg / L of zinc sulfate heptahydrate, 1-3 mg / L of manganese chloride tetrahydrate, 1-10 mg / L of boric acid, 1-30 mg / L of sodium carbonate, 1100-1500 mg / L of sodium nitrate, 0.01-6 mg / L of EDTA, 20-50 mg / L of calcium chloride, 70-100 mg / L of magnesium sulfate heptahydrate, 40-100 mg / L of monopotassium phosphate trihydrate and 0.02 g of inorganic phosphorus; the method comprises the following specific steps: S1, culturing haematococcus pluvialis to a stable phase by a conventional method, inoculating haematococcus pluvialis species into a haematococcus pluvialis culture medium, and culturing; s2, shaking table; s3, culturing for 45 hours; s4, inoculating the seed solution into a haematococcus pluvialis culture medium, and continuously culturing in the shaking table for 6-15 days; the culture medium disclosed by the invention has a good promotion effect on the growth of haematococcus pluvialis and the accumulation of astaxanthin.

The invention provides a manganese-doped ferrocobalt oxide nano particle-coated carbon-nitrogen cubic composite material as well as a preparation method and application of the manganese-doped ferrocobalt oxide nano particle-coated carbon-nitrogen cubic composite material. The preparation method comprises the following steps: firstly doping ferrous sulfate and manganese chloride into ZIF-8, then mixing the ZIF-8 with cobalt nitrate and 2-methylimidazole in methanol, carrying out centrifugal separation to obtain a product, and finally carrying out one-step calcination to realize carbonitriding of the composite material, doping of manganese and generation of nano particles from ferrocobalt oxide. And finally, the manganese-doped ferrocobalt oxide nanoparticle-coated carbon-nitrogen cubic composite material is obtained. Compared with the traditional preparation method, the method disclosed by the invention is simple, mild in reaction condition and high in yield, and the prepared composite material is uniform in morphology and has excellent electro-catalytic performance on the water electrolysis oxygen evolution reaction.

The invention provides an organoid basic culture medium and a method for maintaining and promoting organoid growth, and the organoid basic culture medium comprises a basic culture medium and an additive, the additives comprise taurine sodium 3-hydroxybutyrate, taurine, sodium hypoxanthate, creatinine, L-ornithine, urea, L-sodium lactate, putrescine dihydrochloride, anhydrous citric acid, ethanolamine, N-acetylglycine, alpha ketoglutaric acid, formic acid, malic acid, malonic acid, succinic acid, uric acid, ammonium metavanadate, manganese dichloride, sodium selenite, creatine, glycerol and uridine. Anhydrous sodium acetate and para aminobenzoic acid. When the organ-like basic culture medium is used for treating the organ-like, the activity of the organ-like can be effectively maintained, and basic nutrition and metabolism requirements of the organ-like can be provided, so that the organ-like has the advantages of high activity, fast proliferation and long-term stable passage, and is suitable for various types of organs and wide in application.

The invention provides a preparation method of a lithium manganese iron phosphate positive electrode material. Manganese chloride and ferrous sulfate are sequentially added into deionized water to be stirred and dissolved, then phosphoric acid and ammonia water are prepared into a phosphorus salt solution, a phosphorus salt and hydrogen peroxide mixed solution is dropwise added into a ferromanganese mixed solution to react, then ammonia water is dropwise added, centrifugal washing is conducted after the reaction is finished, and a precursor is obtained; adding water into the centrifugally washed precursor again, pulping, adding hydrogen peroxide and PVP (Polyvinyl Pyrrolidone) into the slurry, continuously stirring uniformly, adding the uniformly mixed slurry and phosphoric acid into a high-pressure reaction kettle, and carrying out hydrothermal reaction to obtain a ferromanganese phosphate precursor; then adding the precursor ferromanganese phosphate, lithium carbonate and glucose into absolute ethyl alcohol for ball milling and mixing, putting a dry sample after ball milling into a tubular resistance furnace, and sintering at high temperature in a nitrogen atmosphere to obtain carbon-coated lithium ferromanganese phosphate which shows very excellent electrochemical performance when being applied to a lithium ion battery positive electrode material.

The invention discloses a high-flux silicon removal nanofiltration membrane and a preparation process, and relates to the technical field of water treatment. The invention discloses a preparation process of a high-flux silicon removal nanofiltration membrane, which comprises the following steps: mixing sulfonic acid electrolyte and a manganese chloride solution to obtain a sulfonic acid-manganese chloride solution; soaking the bottom membrane in a sulfonic acid-manganese chloride solution for multiple times, baking and curing, and generating a hydrophilic silicon removal material layer on the surface of the bottom membrane, so as to obtain the high-flux silicon removal nanofiltration membrane. The bottom membrane is obtained by coating the surface of the polypropylene non-woven fabric with the polysulfone porous material, the hydrophilic silicon removal material layer is attached to the surface of the bottom membrane, and the good silicon pollution resisting effect is achieved by means of repulsion of surface charges of the hydrophilic silicon removal material layer and silicate.

The invention discloses a preparation method of a manganese-boron sludge biochar composite material and application of the manganese-boron sludge biochar composite material in tetracycline removal, and the preparation method comprises the following steps: step 1, putting municipal sludge into hydrochloric acid, standing for 4-8 hours, and then drying and crushing to obtain sludge powder; step 2, uniformly mixing and grinding 1-3 parts by mass of sludge powder and 1-3 parts by mass of manganese chloride; step 3, putting the mixture in the step 2 into a solution containing absolute ethyl alcohol, adding 1-3 parts of boric acid powder, and ultrasonically mixing uniformly; heating in a water bath under a stirring condition to evaporate absolute ethyl alcohol, and then drying; step 4, heating the dried material to 750-850 DEG C in a tubular furnace in a nitrogen atmosphere at a rate of 8-12 DEG C / min, and keeping the temperature for 1-3 hours; and step 5, after cooling, washing with deionized water for multiple times, and drying to obtain a manganese boron sludge biochar composite material finished product. According to the application, potassium peroxodisulfate is activated by the manganese-boron sludge biochar composite material prepared by the method, so that efficient removal of tetracycline in an aqueous solution is realized.

The invention belongs to the field of synthesis of luminescent materials, and relates to a preparation method and application of a zero-dimensional manganese-based hybrid halide nanofiber membrane with reversible photoluminescence and radiation luminescence conversion. The synthetic route is as follows: preparing a precursor from 4-dimethylaminopyridine (DMAP) and hydrochloric acid, then synthesizing zero-dimensional organic-inorganic metal chloride with manganese chloride hydrate (MnCl2. 4H2O) and anhydrous manganese chloride (MnCl2), further mixing the zero-dimensional organic-inorganic metal chloride with polyvinylidene fluoride (PVDF), and performing electrostatic spinning to obtain a nanofiber film; compared with the prior art, the stimuli-responsive reversible PL switch flexible fiber membrane prepared by adopting an electrostatic spinning technology has excellent stability and PL switch performance, and can show efficient PL and RL switching under external stimuli. Meanwhile, the flexible nanofiber film produced by the method has the advantages of one-step synthesis, quick response, repeatability, good portability and low cost, so that the flexible nanofiber film becomes a new application of molecular-level dynamic photonic devices for data storage, information security, optical logic gates, flexible X-ray imaging and the like.

The application relates to a preparation method of an iron-manganese composite-based porous polyurethane cement sponge filler, and belongs to the technical field of sponge fillers. The method solves the defects of the existing sulfur autotrophic denitrification technology. The required proportions of ordinary Portland cement, anhydrous manganese chloride (MnCl2) and ferrous chloride tetrahydrate (FeCl2.4H2O) are weighed, mixed and stirred uniformly, a water phase solution containing a bonding agent polyvinyl alcohol (PVA) and a dispersant sodium polyacrylate (SPAN) is prepared, solid raw materials and the water phase solution are mixed, polyurethane sponge is added into the mixture and stirred, freezing and shaping are carried out, freezing drying is carried out, steam curing is carried out, then, after being cooled to room temperature, the material is washed with deionized water, and finally, drying treatment is carried out. The iron-manganese composite-based porous polyurethane cement sponge filler has a large specific surface area, porosity, rough surface and good hydrophilicity, and has high phosphorus adsorption and sulfur fixation capacity, thereby exhibiting excellent environmental purification performance and excellent microbial adhesion.

The invention discloses a catalyst for synthesizing glycollic acid and a preparation method. The catalyst comprises the following components in percentage by weight: 5-10% of copper oxide, 15-40% of manganese oxide, zirconium oxide or cerium oxide and 50-80% of modified aluminum oxide. The preparation method comprises the following steps: adding a certain amount of copper-containing compound solution into aluminum oxide powder modified by manganese chloride, zirconium chloride or cerium chloride, adding gel containing water, binder methyl cellulose and peptizing agent, uniformly kneading on a kneading machine, and extruding and molding the kneaded material on a banded extruder to obtain the copper-containing aluminum oxide composite material. And drying and roasting to obtain the catalyst for synthesizing glycollic acid. The catalyst for synthesizing glycollic acid, prepared by the invention, takes modified aluminum oxide as a main component, and has better activity and performance; the preparation process provided by the invention is relatively environment-friendly, and has a relatively good application prospect.

The invention provides a nickel-manganese oxide composite material, a preparation method and application, and belongs to the technical field of environmental functional materials and water pollution control, and the preparation method comprises the following steps: adding terephthalic acid, nickel nitrate hexahydrate and manganese chloride tetrahydrate into N, N-dimethylformamide, stirring and mixing, dropwise adding a NaOH solution, transferring into a high-pressure reaction kettle, carrying out a hydrothermal reaction, filtering, washing, and drying to obtain the nickel-manganese oxide composite material. After the reaction is completed, centrifugally washing a mixture in the inner container of the high-pressure reaction kettle, and drying in vacuum to obtain a NiMn-MOF material; and placing the NiMn-MOF in a porcelain boat, calcining, and naturally cooling to room temperature to obtain the nickel manganese oxide composite material. The nickel manganese oxide material prepared by the method shows excellent catalytic activation performance on persulfate, and can realize efficient and rapid degradation of bisphenol A.

The present invention discloses a selenium-doped titanium dioxide-loaded manganese photocatalyst in the field of chemical technology and its use. The photocatalyst is prepared by mixing an ethanol solution of tetrabutyl titanate with an HCl solution of manganese chloride and stirring and aging at room temperature; filtering, washing, and drying to obtain a filter cake; then grinding and mixing the obtained filter cake with selenium powder and a long-chain carboxylate additive to obtain a mixture; and finally calcining the mixture to obtain a selenium-doped titanium dioxide-loaded manganese photocatalyst. The photocatalyst can catalytically oxidize to obtain vinyl sulfate. The prepared vinyl sulfate product is easy to separate and purify and does not pollute the environment. The catalyst preparation process of the present invention is simple and does not require the use of precious metals, thereby achieving higher economic value at a lower cost and is expected to be widely promoted and applied in industry.

The invention discloses a simple method for preparing aldehyde in N, N-dimethylformamide by using halogenated hydrocarbon under the promotion of metal samarium and manganese chloride. The preparation method comprises the following steps: adding halogenated hydrocarbon into N, N-dimethylformamide while stirring, and then sequentially adding metal samarium powder and manganese chloride powder; the reaction system is carried out under an anhydrous condition. Stirring at room temperature until the reaction is complete; and carrying out solvent recovery on the obtained reaction mixed solution. And carrying out column chromatography separation on the crude product, and distilling to remove the solvent to obtain aldehyde, wherein the yield is 60-95%.

The application discloses composite basic manganese chloride and a preparation method and application thereof, and belongs to the technical field of inorganic chemical product preparation. The raw materials used in the preparation method are widely sourced, are lower in price, and the production process steps are simple, the yield is high, and thus the production cost is low. In addition, the preparation method contains a impurity removal step, the harmful ion content of the finally obtained basic manganese chloride product is extremely low, and after use, the product does not have adverse effects on animals and plants. Moreover, in the preparation process, a crystal nucleus agent and a surfactant are introduced, which not only can obtain a product with narrow and uniform particle size distribution, but also can introduce specific nutrient components in the product, can avoid the generation of high-valence manganese components in the drying process, and make the obtained product more easily absorbed and utilized by animals and plants, so that the obtained product can be better used as feed or plant fertilizer.

The invention relates to the technical field of synthesis of lithium ion battery materials, in particular to a method for preparing lithium manganese iron phosphate from chlorination process titanium dioxide waste acid and application. The method comprises the following steps: adjusting the pH value of the chlorination process titanium dioxide waste acid to 4.0-4.5, and then carrying out impurity removal reaction and first solid-liquid separation; adjusting the pH value of a mixed solution of the impurity-removed filtrate, a phosphorus salt and an oxidizing agent to 1.7-2.5, and then carrying out first reaction and second solid-liquid separation; adding phosphoric acid into the slurry of the amorphous iron phosphate filter cake, and then carrying out second reaction and third solid-liquid separation; mixing the iron-removed filtrate with an oxidizing agent, and carrying out third reaction and fourth solid-liquid separation; and adding phosphoric acid into the slurry of the manganese oxyhydroxide filter cake, and then carrying out fourth reaction and fifth solid-liquid separation. According to the method, ferrous chloride and manganous chloride in the chlorination process titanium dioxide waste acid are used for preparing lithium iron manganese phosphate, the production cost is reduced, the problem that a large number of solids are generated by neutralizing the waste acid and occupy land easily is solved, and iron and manganese resources are fully utilized.

The invention discloses a method for efficiently removing impurities and purifying high-calcium and high-magnesium rhodochrosite, and belongs to the technical field of mineral processing. According to the method, calcium and magnesium impurities are removed through X-ray intelligent separation and magnetic separation, then rhodochrosite is converted into manganese chloride through a chloridized ore phase conversion technology, and then the manganese chloride is placed in deionized water to be leached; by adding a manganese sulfate solution, calcium ions are promoted to form precipitates, and calcium impurities in the solution are removed; and meanwhile, an ammonium fluoride solution is added, magnesium ion impurities are further removed, a precipitator is added into the obtained manganese chloride leaching solution, and after the reaction, high-purity rhodochrosite is obtained through precipitation, washing and drying. According to the method, efficient deep impurity removal and purification of the high-calcium and high-magnesium rhodochrosite are achieved, efficient cyclic utilization of resources is achieved, the overall cost of the process and the environmental influence are reduced, the method is suitable for large-scale continuous production, and industrial popularization is convenient to achieve.

The invention discloses a method for synchronously recovering lithium, copper, cobalt, nickel and manganese in a waste ternary lithium battery, which comprises the following steps of: carrying out reduction smelting on the waste ternary lithium battery in a smelting furnace, adding calcium chloride, limestone and quartz stone in the reduction smelting process for slagging, and reducing copper, cobalt and nickel elements in a battery material into an alloy; lithium and manganese elements are converted into volatile lithium chloride and manganese chloride in the smelting process, the volatile lithium chloride and manganese chloride enter a gas phase to be collected, and then lithium carbonate and manganese hydroxide are prepared through a water washing-sodium hydroxide precipitation-sodium carbonate precipitation method. According to the method, synchronous recovery of lithium, nickel, cobalt, copper and manganese is achieved, and compared with an existing wet treatment process, the treatment capacity is larger, pretreatment is simpler, the recovery technological process is shortened, and the economic cost is reduced.

The invention belongs to the field of pharmaceutical preparations, and relates to a multi-trace element injection and a preparation method thereof. The multi-trace element injection comprises effective components, a stabilizer and water, the effective components comprise chromium chloride, copper chloride, ferric chloride, manganese chloride, sodium molybdate, sodium selenite, zinc chloride, potassium iodide and sodium fluoride, and the stabilizer comprises xylitol, a pH regulator and an additive; and the additive is PEG (Polyethylene Glycol) 400 or PEG 600. The multi-trace element injection provided by the invention can effectively inhibit the loss of iodine in the sterilization process, and the stability, economical efficiency and production controllability of the multi-trace element injection are fundamentally improved.

The present invention belongs to the technical field of environmental functional materials, and specifically relates to a zero-valent iron-manganese bionic coral island and its preparation method and application. The zero-valent iron-manganese bionic coral island described in the present invention utilizes biomass raw materials as carbon precursors, uses zinc chloride as the main pore-forming agent, and adds ferric chloride and manganese chloride as auxiliary pore-forming agents and iron-manganese precursors. It is prepared by a one-step carbon thermal reduction method under an inert atmosphere, and finally obtains a zero-valent iron-manganese bimetallic nanorod array wrapped with a layer of graphitized carbon film and uniformly grown on the surface of porous biocarbon. The zero-valent iron-manganese bionic coral island described in the present invention has excellent catalytic H2O2 performance and reduction dehalogenation ability, can achieve efficient degradation of organic pollutants in water, especially halogenated organic pollutants, can be used for the effective remediation of organic pollutants in wastewater, groundwater and contaminated soil, and has broad application prospects.

The invention provides an epoxy resin curing agent containing MOFs as well as a preparation method and application thereof, and the preparation method comprises the following steps: S1, dissolving an organic ligand in an N, N-dimethylformamide (DMF) solution, and dropwise adding a sodium hydroxide aqueous solution into the organic ligand solution to obtain disodium salt; s2, dissolving the disodium salt precipitate obtained in the step (1) in distilled water; slowly dropwise adding 10mL of deionized water into manganese chloride, stirring and dissolving, adding a disodium salt aqueous solution, mixing, and carrying out vacuum drying to obtain a metal organic framework material Mn-NPA; s3, heating the Mn-NPA, and carrying out vacuum drying and activation on the Mn-NPA; s4, Mn-NPA and an imidazole compound are mixed for a load reaction; and S5, filtering and drying the reacted mixture to obtain the epoxy resin curing agent containing MOFs. According to the epoxy resin curing agent containing MOFs, an epoxy resin coating can be prepared into a single component, and the epoxy resin curing agent can be used once a cover is opened and is convenient to use and easy to construct.

The present invention discloses a treatment system and treatment process for sodium methoxide solid waste, which belongs to the field of hazardous waste treatment technology. The system comprises a hydrolysis reactor, an oxidation reactor, a neutralization reactor and a solid-liquid separator connected in sequence; the hydrolysis reactor is connected to an inert gas tank; the oxidation reactor is connected to an ozone generator and a chlorine dioxide generator; the neutralization reactor is connected to a manganese chloride solution storage tank and a sodium hydroxide solution storage tank; the hydrolysis reactor, the oxidation reactor and the neutralization reactor are all connected to an exhaust gas treatment system. The sodium methoxide solid waste treatment process of the present invention can achieve complete and safe disposal of sodium methoxide solid waste, and effectively collects and treats the three wastes of the system throughout the reaction process. At the same time, the sodium methoxide solid waste treatment system of the present invention is built based on the above-mentioned treatment process. Ultimately, the present invention aims to achieve safe disposal of sodium methoxide solid waste while ensuring the safety of the operating environment.

This invention discloses a bimetallic complex with whitening and anti-aging effects, its preparation method, and its application, belonging to the field of biomaterial preparation technology. The preparation method includes S1, dissolving an amino acid in water to obtain solution A; S2, dissolving a metal salt in ethanol to obtain solution B; S3, mixing solutions A and B evenly, and then reacting them through a solvothermal reaction to obtain solution C; S4, washing and drying solution C to obtain the final product. The amino acid in step S1 is at least one of glutamic acid and aspartic acid; the metal salt in step S2 is copper acetate and zinc acetate, copper acetate and manganese chloride, or copper acetate and cobalt nitrate; the solvothermal reaction conditions in step S3 are: temperature 60-110℃, reaction time 2-48h. The prepared bimetallic complex has both whitening and anti-aging effects, providing a new direction for the application of BioMOFs materials.