74results about How to "The preparation process equipment is simple" patented technology

The invention discloses a super-hydrophobic nano-composite coating comprising the following components in percentage by weight: 0.5-10.5 percent of hydrophobic silicon dioxide, 0.2-5.4 percent of hydrophobic polymer material and 86.5-99.3 percent of solvent, wherein a contact angle of a water drop on a membrane surface prepared by the coating is 152-169 degrees, and a rolling angle is 1-9 degrees. When the coating is transparent, the visible light transmission of the membrane prepared from the coating is 80-94 percent. The invention also discloses a preparation method of the super-hydrophobic nano-composite coating. The nano-composite coating not only has excellent super-hydrophobicity and low cost of products, but also can obtain higher transparency by reducing the contents of the hydrophobic silicon dioxide and the hydrophobic polymer material and has simple preparation processing equipment and high production efficiency.

The invention discloses a method for preparing a photoluminescence carbon quantum dot. The method includes the following steps of drying and dehydrating a solid residue obtained after squeezing soybeans into soya-bean milk, placing the dried and dehydrated solid residue in an electrothermal blowing dry box to heat and carbonize to obtain a crude product of the carbon quantum dot, grinding the crude product of the carbon quantum dot, sieving, dispersing the sieved crude product of the carbon quantum dot in deionized water, uniformly stirring, still standing, centrifuging, evaporating an obtained aqueous solution containing the carbon quantum dot, and freeze drying to form a powdered shape to finally obtain the photoluminescence carbon quantum dot. According to the method for preparing the photoluminescence carbon quantum dot, a household bean juice maker is used for obtaining soybean dregs which serve as raw materials, the source of the raw materials is wide, the photoluminescence carbon quantum dot is prepared through low temperature heating and carbonization, the operation is simple, the cost is low, the yield is high, the preparation process equipment is simple and easy, the operation can be completed within an extremely short time, and the method is easy to popularize.

The invention discloses a method for preparing nitrogen and sulfur-doped fluorescent carbon quantum dots. According to the method, citric acid is taken as a carbon source, L-glutathione is taken as a nitrogen-sulfur dopant, a microwave oven is taken as a reaction platform, the carbon quantum dots with fluorescence properties are prepared in a heating manner, the residues and moisture are removed through dialysis and freeze drying, and quantum dot powder is obtained. The nitrogen and sulfur-doped carbon quantum dots are prepared by adopting the method disclosed by the invention; the method is simple in operation, low in cost, high in yield, simple in preparation process and equipment, free of a solvent, and easy to popularize and produce on a large scale, and can be rapidly finished within a short period of time; and the prepared carbon quantum dots have the advantages of good water solubility, high fluorescence properties, photobleaching resistance, adjustable emission spectrum, good biocompatibility, low cytotoxicity and the like, and have a good application prospect in the fields of bioimaging, biosensors and photo-electric devices.

The invention discloses a preparation method and application of an environment-friendly economic luminescent carbon quantum dot. The method disclosed by the invention mainly comprises the following steps of: with bagasse as a carbon source material, adding the bagasse into a mineralizer aqueous solution, and heating by using a hydro-thermal synthesis reaction kettle in a muffle furnace at the temperature of 180 DEG C for 4h; centrifuging a brownish black reaction liquid at a high speed, and then, collecting a supernatant for dialyzing; collecting the reaction liquid in a dialysis bag, cooling the reaction liquid, and then, transferring the reaction liquid into a freezer drier for freeze-drying to finally obtain a powdery carbon quantum dot. The preparation method disclosed by the invention has the characteristics of simplicity, convenience and rapidness in operation as well as simplicity in preparation process and equipment; and the environment-friendly economic luminescent carbon quantum dot is made of daily wastes as raw materials and is low in cost, environment-friendly and easy to popularize. The carbon quantum dot prepared by the invention has the excellent characteristics of favorable dispersibility, water solubility, fluorescent stability, biocompatibility and the like, and is successfully applied to living cell imaging and marking.

The invention relates to a preparing method of an amino carbon quantum dot fluorescence silicon substrate imprint sensor and belongs to the technical field of preparation of an environment function material. The preparing method comprises the following steps: dissolving citric acid and a polymine solution to obtain a transparent solution, then transferring to a hydrothermal reaction kettle for reaction, and then cooling to room temperature to obtain dispersion liquid of amino carbon quantum dots; centrifuging the dispersion liquid to obtain an amino carbon quantum dot solution; then taking the amino carbon quantum dots as fluorescence carriers, p-nitrophenol as template molecules, (3-aminopropyl) triethoxy silane as a function monomer, and tetraethoxysilane as a cross-linking agent so as to obtain a fluorescence molecular imprinted polymer to be used for optical detection of p-nitrophenol. The amino carbon quantum dot fluorescence molecular imprinted polymer has very good optical and pH stabilities and has te capacity of selectively recognizing p-nitrophenol.

The invention discloses a hydrothermal method for synthesizing carbon quantum dots by taking soybean meals as raw materials. The method comprises the following steps: mixing the soybean meals and water to obtain a precursor solution containing soybean meals, adding the precursor solution into an autoclave, heating and reacting at a temperature of 100-500 DEG C, cooling and removing insoluble substances after the reaction is completed, dialyzing and free-drying the supernatant, thereby obtaining the carbon quantum dot powder. The invention further discloses carbon quantum dots prepared by the method and application of the carbon quantum dots. The photoluminescence carbon quantum dots prepared by the method disclosed by the invention are capable of detecting Hg<2+> and Fe<3+> in water, the minimum detection limit can reach 30nmol / L, and the detected linear range is 0.1-50mu mol / L. The raw materials involved in the method disclosed by the invention are wide in source, the product is prepared by a hydrothermal synthesis method, and the method is simple in operation, low in cost, high in yield, simple in preparation technology equipment and easy to popularize. Moreover, the prepared carbon quantum dots can be applied to detecting Hg<2+> and Fe<3+> heavy metal ions in surface water.

The invention discloses antibacterial gel hand cleanser and a preparation method thereof. The preparation method comprises the following steps of adding tea tree oil, chlorhexidine acetate and skin care agents in alcohol substances and dissolving at the temperature of 30-70 DEG C to form alcohol solution; adding surfactant and water soluble vitamin E derivative in deionized water to form aqueous solution; adding carbomer in the deionized water; stirring and standing until the carbomer swells sufficiently and disperses uniformly to form semi-solid gel; mixing the aqueous solution and alcohol solution and slowly adding the mixture in the semi-solid gel; adding pH (potential of hydrogen) regulating agents until the pH value is 6.8-7.4; and stirring for 10-30 minutes by using a high-speed homogenizer under the condition that the rotating speed is 1000-5000rmp to obtain the antibacterial gel hand cleanser. The antibacterial gel hand cleanser contains various antibiotic constituents, has rapid and durable effects, is low in irritation and stability, has good broad-spectrum bactericidal and antibacterial effects, and also has good moisturizing and anti-oxidation effects.

The invention relates to a preparation method of an amino CQD (carbon quantum dot) fluorescence and 4-nitrophenol molecularly imprinted sensor and belongs to the technical field of environment function materials. According to the method, firstly, citric acid and polyethyleneimine are added to water and dissolved, and a transparent solution is obtained; the transparent solution is transferred to a hydrothermal reaction kettle, is heated, reacts and is cooled, and an amino CQD dispersion liquid is obtained; the dispersion liquid is centrifuged, and an amino CQD solution is obtained; the amino CQD solution and ethanol are added to a flask, 4-nitrophenol, AM (acrylamide), EGDMA (ethylene dimethacrylate) and AIBN (2,2'-azobis(2-methylpropionitrile)) are added, N2 is introduced for oxygen removal, after two steps of polymerization, a product is washed with water and ethanol, unreacted substances are removed, and the product is dried in a vacuum drying oven; 4-nitrophenol as a template molecule is eluted by an eluent, and the CQD fluorescence molecularly imprinted polymer is obtained. The fluorescence molecularly imprinted polymer has better optical stability and can rapidly recognize and optically detect 4-nitrophenol.

The invention discloses a visible-light-induced photocatalyst bismuth tungstate nano-chip. A preparation method of this chip comprises the following steps: 1), subjecting bismuth nitrate and glycerol to solvothermal reaction in isopropyl alcohol solvent, and filtering, washing and drying to obtain bismuth glycerol; 2), dispersing the bismuth glycerol evenly in sodium tungstate solution, adjusting PH of an obtained solution system to 0-2, carrying out hydrothermal reaction, and filtering, washing and drying to obtain nano bismuth tungstate. The bismuth nitrate, the glycerol and the sodium tungstate are used as main materials, bismuth tungstate nano-chip powder is prepared by using a two-step method, related preparation equipment is simple, reaction conditions are mild, energy consumption is low, the technique is unique and novel, obtained finished sodium bismuth molybdate has grain size of 20-40 nm and may be directly used as a photocatalyst for degrading organic pollutants by photocatalysis in visible light.

The invention belongs to the technical field of environmental protection, and provides a preparation method of a composite metal oxide ozone catalyst, which comprises the steps of: soaking industrial-grade gamma-Al2O3 with a dilute sulfuric acid solution, washing the industrial-grade gamma-Al2O3 with deionized water to achieve a neutral state, and boiling and drying the industrial-grade gamma-Al2O3 to obtain an activated gamma-Al2O3 sphere ball carrier; and sequentially putting the activated gamma-Al2O3 sphere carrier into a cerous nitrate solution and a cobalt nitrate solution, performing water bath impregnation, drying and the like to obtain the gamma-Al2O3 sphere carrier loaded with a cerous nitrate precursor and a cobalt nitrate precursor, and calcining the gamma-Al2O3 sphere carrier to obtain the final product composite metal oxide ozone catalyst CoO-CeO / gamma-Al2O3. The COD removal efficiency of the catalyst is 4.3%-11.9% higher than that of similar products sold in the market, the ammonia nitrogen removal efficiency of the catalyst is 28.2%-37.1% higher than that of similar products sold in the market, the catalytic efficiency of the catalyst is high, the catalyst has high stability, and the catalyst is widely applied to the actual water treatment process and has a wide market prospect.

The invention discloses a bell-shaped ZnO nanometer device material and a preparation method thereof. A new product is added for ZnO nanometer structural materials, and gaps of the prior art at home and abroad are filled. Soluble zinc salt, deionized water and hexamethylene tetramine are adopted as raw materials of the bell-shaped ZnO nanometer device material and mixed and dissolved to generate the bell-shaped ZnO nanometer device material by a one-step ultrasonic irradiation process, the bell-shaped ZnO nanometer device material is bell-shaped, a nanometer tube and a nanometer bar are automatically assembled to form the bell-shaped ZnO nanometer device material, the basic structure of the nanometer tube (a bell cover) is a six-prism-shaped tube, a tube opening of the nanometer tube is hexagonal, deformation shapes include a triangle and a diamond, and the nanometer bar (a bell tongue) is cylindrical. The bell-shaped nanometer structure is better in scattering property, two bells are connected locally to form a coaxial cable structure, and a plurality of bells are gathered together to form a trumpet-flower structure. The bell-shaped ZnO nanometer device material is novel in structure and can be applied to fields of medical antibiosis, photoelectric devices, gas sensors, solar batteries and the like.

The invention discloses a polliwog-shaped metal copper nanomaterial and a preparation method thereof, which fill the blank of the prior art at home and abroad and add a novel variety for a metal copper nanostructure material. The appearance of the metal copper nanostructure is polliwog-shaped; the structure is uniform and is mono-dispersed; the length of the polliwog-shaped material is about 4-5 micrometers; the head part of the polliwog-shaped material consists of hexagonal nanosheets of which the sizes are 600-800 nanometers; the body of the polliwog-shaped material consists of nanowires ofwhich the diameters gradually decrease from the head part; the nanowires have high flexibility; and the tail part is crimped. The polliwog-shaped metal copper nanomaterial is prepared by adopting a microwave-assisted liquid phase reduction method in which a soluble copper salt, hexamethylene tetramine and ascorbic acid are taken as raw materials, water is taken as a solvent and a reaction mixed liquor undergoes a microwave radiation reduction reaction in a household microwave oven. The polliwog-shaped metal copper nanomaterial obtained with the method has a novel structure. The preparation method has the advantages of simple preparation process and equipment, readily available raw materials, low cost, mild reaction condition, no use of surfactant or organic solvent, low carbon, environmental friendliness, high repeatability and suitability for industrial production.

The invention relates to the field of carbon quantum dot preparation, and particularly relates to a preparation method of silicon doping carbon quantum dots by adoption of a solvothermal method and applications thereof. The preparation method includes: adding hydroquinone into a stainless steel high-pressure reactor the liner of which is polytetrafluoroethylene; adding acetone according to a ratio that 5 mL of the acetone is added for per 0.97 g of the hydroquinone; adding dropwise silicon tetrachloride into the reactor, putting the sealed reactor in an air dry oven, heating at 150-220 DEG C for 1-5 h, cooling to room temperature, and concentrating and evaporating the liquid mixture in the reactor to dryness by adoption of a rotary evaporation manner to obtain the silicon doping carbon quantum dots. The preparation method is simple, efficient and mild, and is low in operation cost and simple in preparation process equipment. The prepared silicon doping carbon quantum dots can be applied in cell biological imaging.

A synthetic diesel oil is prepared from the desulfurized heavy benzol as main raw material, adding proper quantity of kerosene and light diesel oil, further adding small amounts of cetane, number improver, viscosity index improver and flowability improver through mixing. Its advantages are high cetane number, heat value and power, low oil consumption, and high start-up performance.

The invention discloses a hollow silkworm cocoon-shaped porous nickel oxide nano material and a preparation method thereof. The method comprises the following steps of: weighing a proper amount of NiCl2.6H2O and adding the weighed NiCl2.6H2O into 50mL deionized water, and adding a proper volume of N2H4.H2O; in magnetic stirring, adding a proper amount of (NH4)2C2O4, stirring for 10-20 minutes, placing the product in a microwave oven, and heating at a low fire level for 8-12 minutes; cooling down the product to room temperature, and standing overnight to obtain a blue precipitate; and placing the dried blue precipitate into a resistance furnace, setting the temperature to 400-600 DEG C, and performing thermal treatment for 0.5-2 hours to obtain the hollow silkworm cocoon-shaped porous nickel oxide nano material. The long diameter of the nickel oxide nano silkworm cocoon is 280-650nm, the short diameter is 120-350nm, and the wall thickness is 30-80nm; and the surface is rich in pore structures, and the pore structure is formed by nano particles with particle size of 10-20nm. The method disclosed by the invention has simple technology and good repeatability, and is convenient to operate and is green, environment-friendly and energy-saving.

The invention relates to casing smooth muscle collagen preparation method and functional study. In the method, smooth muscles in casing of animals such as sheep and cattle are used as raw materials, and collagen is extracted from the smooth muscles in the casting by processes of washing, acidic and alkaline treatment, heating, stewing, cooling, soaking in alcohol, drying and crushing; and the treated casing smooth muscle collagen is yellowish solid particles. The method has the advantages that: the process flow is simple; the equipment is easy to configure and operate; the energy consumption is low; and the yield is high. The functional study on the casing smooth muscle collagen particles shows that the casing smooth muscle collagen can be developed as a novel assistant medicament for treating gastrointestinal ulcer, diabetes, cancers and other diseases, can serve as a health-care product for promoting digestion and absorption, protecting human gastroenteric mucosa and improving body immune function, can be used as a component of toothpaste for protecting teeth and treating dental ulcer, can be used as a component of cosmetics and has special skin-beautifying, skin-care and anti-wrinkle functions.

The invention discloses a method for synthesizing carbon quantum dots from water chestnuts and application of the carbon quantum dots and belongs to the technical field of nanometer materials. The method includes mixing ground water chestnuts with deionized water, reacting for a period of time in a microwave oven, taking a reaction product out of the microwave oven, naturally cooling to a room temperature, adding deionized water into the cooled reaction product, removing insoluble substances by centrifugation, and subjecting liquid supernatant to dialysis and freeze drying so as to obtain carbon quantum dot powder. The method has the advantages that large-scale preparation can be achieved because of widely available raw materials, a preparation process is simple and rapid, the prepared carbon quantum dots are high in stability and fluorescence quantum yield and excellent in water solubility and can be used for analyzing heavy metal ions in a water body.

The invention relates to a Cu (I) coordination polymer green light emitting material and a synthesis method thereof. The coordination polymer green light emitting material has a chemical formula: {[Cu2 (SQPA)].(4,4'-bipy) 1.5.H2O].H2O]}n, wherein n is greater than 1; the material can be excited by visible light to emit green fluorescence. The light emitting material can meet requirements for the electronic industry, public information display, bioassay lighting, electroluminescent materials, large-screen display and the like. The preparation process and equipment are simple, starting materials are cheap and readily available, cuprous ions are contained in the material by the redox reaction between reactants. The material has good crystalline, no toxicity, no pollution, high thermal stability, excellent luminescent properties and is suitable for small and medium-scale industrial production.

The invention discloses a preparation method for a dye-sensitized solar cell. The preparation method comprises the following steps of step A, providing a transparent substrate material with a clean surface, and depositing a titanium dioxide compact thin film on the surface of the substrate material by adopting an atomic layer depositing technology; step B, depositing a titanium-contained organic-inorganic composite film on the titanium dioxide compact thin film obtained in the step A by adopting a molecular layer depositing technology; and step C, annealing the material obtained in the step B at the temperature of 400-600 DEG C for 0.5-2 hours, soaking the material after being thermally treated in the dye, taking out and cleaning the material and drying the material to obtain a photo anode of the dye-sensitized solar cell. The dye-sensitized solar cell prepared by the preparation method of the invention is high in photoelectric converting efficiency, good in stability of the devices, simple in the preparation process equipment, mild in reaction conditions, high in production efficiency, lower in cost and energy consumption, free of pollution on the ecological environment, high in repeatability, and suitable for the large-scale application having wider industrial application prospects.

The invention discloses a method for catalyzing and synthesizing a spiral carbon nano material by using water-soluble alkali metal carbonate. The method comprises the following steps of: synthesizing a catalyst precursor; putting the catalyst precursor into a tubular reactor in which temperature can be precisely controlled, feeding helium and thermally treating the catalyst precursor to obtain catalyst alkali metal carbonate nano particles, wherein the thermal treatment temperature is between 400 and 600 DEG C and the thermal treatment time is 3 to 10 hours; after thermal treatment, stopping feeding the helium, then feeding acetylene gas immediately, and catalyzing and splitting the acetylene on the surfaces of the catalyst alkali metal carbonate nano particles, wherein the reaction temperature is between 400 and 600 DEG C and the reaction time is 3 to 8 hours; and thus obtaining the black spiral carbon nano material. In the method, the adopted catalyst is the water-soluble alkali metal carbonate, so the water-soluble alkali metal carbonate can be washed away conveniently and the pure spiral carbon nano material can be obtained; furthermore, the method is environment-friendly and pollution-free; and preparation process and equipment are simple, the reaction temperature is low, the cost is low and large-scale production can be realized.

The invention relates to a Tb coordination polymer green luminescent material containing a pyridine carboxylic acid derivative with a conjugated structure. The Tb coordination polymer green luminescent material is characterized in that the chemical formula of the coordination polymer is [Tb(tcptpy)(H2O)2.2H2O]n, wherein n is greater than 1, the ligand H3tcptpy is 4-(2, 4, 6-tricarboxyphenyl)-4, 2': 6',4''-dipyridyl, the coordination polymer crystal basic unit belongs to a monoclinic system, the space group is P21 / c, the chemical formula is C24H16N3O8Tb, the unit cell parameters are as follows: alpha = 90 degrees, beta = 95.143 (3) degrees and gamma = 90 degrees, and the luminescent material can be excited by near ultraviolet light and emit bright green fluorescence. The Tb coordination polymer green luminescent material is low in raw material cost, simple in preparation process equipment, excellent in comprehensive performance and suitable for industrial production, and the material can meet the requirements of the application fields of electronic industry, public areas display, illumination and environmental ion detection.

The invention relates to a preparation method of a poly(perfluoroethylene-propylene) fiber. The preparation method comprises the following steps: (1) raw material preparation; (2) melt extrusion; (3) spinning and shaping; (4) cooling; (5) heating and drying; (6) drawing; (7) heat treatment; and (8) coiling and packing. The poly(perfluoroethylene-propylene) fiber prepared by the preparation method provided by the invention has the advantages of excellent mechanical strength, heat resistance, chemical resistance, non-adhesion property, hydrophobicity, low abradability and electric insulation property, and can be widely applied in braided fabrics, sports requisites, building decoration, medical articles and other industrial fields.

The invention relates to a polymer green luminescence material containing Zn-Tb mixed metal and a preparation method of the polymer green luminescence material. The chemical formula of the coordination polymer is {[Tb3(HMIDC)7.6H2O][Zn6(bipy)2.3H2O].6H2O}n, wherein n is larger than 1. The material can be excited by near ultraviolet and emit strong green fluorescence. The prepared polymer green luminescence material containing Zn-Tb mixed metal is good in crystal crystallinity, free of toxicity and pollution, high in heat stability, good in luminescence property and low in raw material cost. Equipment used in the preparation process is simple, the method is easy and convenient to implement and suitable for mass production, and the material can meet requirements of the application fields of display, information and illumination in the electronic industry, public places, household appliances and the like. The material has broad application in the aspects of rare-earth three-base-color fluorescent lamps, display of large-screen high-definition color television sets, rare-earth phosphor luminescence materials and the like.

The invention belongs to the field of lithium batteries, and provides a preparation method of a high-capacity iron-based lithium ion battery cathode material, that is, alpha-LiFeO2 to overcome the defects of the complicated synthesis method of the existing alpha-LiFeO2 cathode material, low electrochemical performance, complicated structure, unpurified product and the like. The method for synthesizing at the room temperature is adopted, alpha-LiFeO2 is prepared by strictly controlling the molar ratio of Li<+> / Fe<3+>, various reactants are dissolved into absolute ethyl alcohol and are directly synthesized into alpha-LiFeO2 at the room temperature through magnetic stirring, metal lithium is introduced in the reaction process to serve as a reduction protective agent, an alpha-LiFeO2 product rich in lithium is obtained, the product is centrifuged, separated, washed, dried, grinded, refined and dried to obtain the lithium ion battery cathode material alpha-LiFeO2; the material has no impurity, is high in purity, single in phase and even in particle size distribution, the first specific discharge capacities respectively reach 450 mAh / g, 260 mAh / g and 202 mAh / g at the charge-discharge rates of 0.1 C, 0.2 C and 0.5 C; and in addition, the manufacturing cost is low, the synthesis method is simple, and the preparation method is suitable for large-scale industrial production.

The invention discloses a method for synthesizing copper nano-clusters modified by silane in one step and application of the copper nano-clusters modified by the silane in detecting trace water-content in an organic solvent. The preparation method for the synthesizing copper nano-clusters modified by silane comprises the step that copper salt is placed in anhydrous acetonitrile, then the silane substituted by mercapto groups is added, stirring is conducted for 20-40 min under a sealed room-temperature condition, and the copper nano-clusters modified by the silane are obtained. Ultrasensitive detection of trace water in the organic solvent is achieved through the open pattern of a fluorescence signal. The method for synthesizing the copper nano-clusters modified by the silane in one step and the application of the copper nano-clusters modified by the silane in detecting the trace water-content in the organic solvent has the characteristics that the operating cost is low, preparation process equipment is simple, the reaction condition is gentle, the reaction speed is high, and popularization is easy.

The invention discloses high-performance concrete, which comprises sludge artificial sandstone, and the high-performance concrete containing the sludge artificial sandstone is prepared from the following components in parts by mass: 35-41 parts of artificial stone, 51-56 parts of artificial fine sand, 33-39 parts of artificial coarse sand, 97-103 parts of cement, 17-22 parts of silica fume, 0-38 parts of mineral powder, 0-38 parts of fly ash, 9-12 parts of dried sludge, 3.5-3.9 parts of water reducing agent, 21-24 parts of steel fiber and 24-26 parts of water. The obtained concrete is high in strength, the process, cost, raw material obtaining and the like are higher than those of common C30 concrete, and the concrete can be widely applied to the technical field of concrete material preparation.

The invention relates to a preparation process for improving the hydrogen storage performance of an AB2C9 La-Mg-Ni-based alloy. The alloy has a chemical formula La2-xTixMgNi9 (x is 0.1, 0.2 or 0.3); and the purities of La, Ti, Mg and Ni serving as elements of the alloy are all more than 99.9 percent. The preparation process comprises the step of performing annealing treatment on the La2-xTixMgNi9 alloy (x is 0.1, 0.2 or 0.3) prepared by a magnetic suspension induction smelting method in vacuum under the protection of argon, wherein the annealing temperature is between 800 and 900 DEG C and the annealing time is 10 hours. Compared with the as-cast alloy, the alloy subjected to annealing treatment has the advantages of increasing the hydrogen absorption capacity, reducing the pressure of the hydrogen absorbing and discharging platform, improving the electrochemical property and the like. The process has great significance for promoting the practical process of the AB2C9 La-Mg-Ni-based alloy.

The invention provides a method for preparing carbon dots from organic wastewater and realizing coagulation recovery of the carbon dots and belongs to the technical field of chemical nanomaterials. The organic wastewater is used as a carbon source, a microwave oven is used as a reaction platform, the carbon dots are prepared, and dot materials are recovered with the coagulation technology. According to the method, the organic wastewater is used as the carbon source for preparing the carbon dots, re-addition of other organic carbon sources is not required, the fluorescent carbon dots are obtained with the preparing method, operation is simple, the cost is low, the yield is high, preparation technology equipment is simple, preparation can be completed quickly in a short time, and popularization and large-scale production are easy. The carbon dot materials are recovered through titanium coagulation, nano pollution is avoided, recovered dot materials can be utilized, the carbon dots prepared with the method have the advantages of good water solubility, high fluorescence property, photobleaching resistance, adjustable emission spectrum, good biocompatibility, low cytotoxicity and the like, and composites recovered through coagulation have good application prospect in fields of preparation of adsorbents, photocatalysis, biosensors and photoelectronic devices.

The invention relates to a red luminescent polymer material containing Zn-Eu (Zinc-Europium) mixed metal and a preparation method of the red luminescent polymer material. The chemical formula of the polymer red luminescent material is as follows: {[Eu(PBDA)2.2H2O][Zn(PBDA)2Cl2]}n, wherein n is more than 1, and the material can be stimulated by near ultraviolet and emit the bright red fluorescent light. The preparation method of the polymer red luminescent material containing the Zn-Eu mixed metal is as follows: firstly, preparing an organic ligand; secondly, preparing a precursor solution; and thirdly, preparing a luminous material. The red luminescent polymer material prepared by the invention is better in crystal crystallinity, higher in thermostability, more excellent in luminescence property, lower in raw material cost, and free from toxicity and pollution; and the red luminescent polymer material is simple in preparation technology and device, excellent in comprehensive property, and suitable for industrial production, so that the material can meet displaying requirements in electronic industries and public places and requirements on fields of display, information, illumination and application, such as household appliances and the like.