111results about How to "Dense growth" patented technology

The invention discloses a lithium battery. The lithium battery comprises a positive plate, a negative current collecting substrate, an isolating membrane and an electrolyte, wherein the isolating membrane and the electrolyte are arranged between the positive plate and the negative current collecting substrate; the positive plate comprises a positive current collecting body, a positive diaphragm and a positive polar lug, the positive diaphragm is attached to the positive current collecting body and contains a positive active material, and the positive polar lug is welded on the positive current collecting body; the negative current collecting substrate is made of a metal foil or a metal mesh with a thickness of 6-25 mu m, is 6-60 mu m in thickness and has a plane or concave-convex structure; and the electrolyte contains a lithium salt and a solvent, the lithium salt is lithium hexafluorophosphate, and the concentration of the lithium salt in the electrolyte is 1.5-7mol / L. The lithium battery disclosed by the invention has the characteristics of high power, high energy and low self-discharge rate. Meanwhile, the invention also discloses a preparation method and applications of the lithium battery.

The invention mainly aims at providing a preparation method and application of a g-C3N4-Cu2O composite catalyst. The preparation method comprises the following steps: providing a first solution, wherein the first solution contains Cu<2+> in a dissolved state; adding protonated g-C3N4 into the first solution, stirring, and carrying out ultrasonic treatment to obtain suspension; adding xylitol into the suspension in a stirring state, adjusting the pH value to 10-12, and stirring to obtain mixed liquid; heating the mixed liquid to 150-200 DEG C in a high-pressure reaction container, and carrying out a reaction for 25-35h at the constant temperature to obtain reactants; cooling the reactants and then carrying out solid-liquid separation on the cooled reactants to obtain a solid product, cleaning, and carrying out vacuum drying; heating the solid product up to 150-250 DEG C under the condition of gas protection, and maintaining the constant temperature for 1-3h to obtain the g-C3N4-Cu2O composite catalyst. The g-C3N4-Cu2O composite catalyst has higher visible absorption capacity and good photocatalytic performance. The g-C3N4-Cu2O composite catalyst can be used for carrying out catalytic treatment on organic pollutants in waste water in presence of visible light, and is remarkable in degradation effect and relatively stable.

The invention relates to a bimetallic nitrogen doped carbon / molybdenum disulfide composite electrocatalyst material and a preparation method thereof. The preparation method of the bimetallic nitrogendoped carbon / molybdenum disulfide composite electrocatalyst material comprises the following specific steps of 1) preparing bimetallic nitrogen doped carbon: preparing a mixed solution of a zinc salt,a cobalt salt and dimethylimidazole from absolute methanol as a solvent to prepare a bimetallic organic framework; and after calcining the bimetallic organic framework at a high temperature, preparing the bimetallic nitrogen doped carbon; and 2) preparing a bimetallic nitrogen doped carbon / molybdenum disulfide composite material by using a hydrothermal method: preparing a mixed solution of sodiummolybdate etrahydrate and thiocarbamide from deionized water as a solvent; and placing the mixed solution and the bimetallic nitrogen doped carbon into a polytetrafluoroethylene high pressure vesselto perform hydrothermal reaction so as to prepare the bimetallic nitrogen doped carbon / molybdenum disulfide composite material. The bimetallic nitrogen doped carbon / molybdenum disulfide composite electrocatalyst material, provided by the invention, has the advantages that excellent catalytic activity and high stability are shown when the prepared composite material is used for electrocatalytic hydrogen evolution reaction, the preparation cost is low, the repeatability is high, and the application prospect is broad.

The invention discloses a preparation method of a reticular multi-component composite oxide monolithic denitration catalyst. The denitration catalyst is a flower-shaped structure multi-component composite metal oxide which grows on a wire mesh in situ and has catalytic activity. The denitration catalyst is prepared by the steps of: based on a reticular metal wire as a support structure and reactant, and reacting with metal ions in the solution under the hydrothermal condition to generate multi-component metal hydroxide flower-shaped composite structure on the surface of the wire mesh in situ;and then washing, drying, baking and carrying out high-temperature calcination to obtain the denitration catalyst with high activity. The reticular multi-component composite oxide monolithic denitration catalyst has the advantages of being even in active component distribution, rapid in thermal response speed, good in denitration performance, simple in preparation technology, low in cost, free from molding and the like, thus being applicable to treatment for nitric oxides in various tail gases.

The invention discloses a coated product and particularly relates to coated glass which can be processed at a high temperature. The material of a reflective infrared film layer of the coated product is changed from the traditional pure silver material to an alloy material Ag1-aSba including silver (Ag) and stibium (Sb) metals, wherein a is greater than 0 and is less than or equal to 9wt%, and Sb is used as a wetting agent in the deposition process of a silver layer and enables the silver layer to grow in a two-dimensional shape; meanwhile, Sb can prevent Ag to interact with the adjacent oxide layer, improve the stability of a coating system in a high-temperature heat treatment and further improve the chemical stability as well as mechanical property of the silver layer. The coated product disclosed by the invention has high visible light transmittance, favorable mechanical resistance and chemical stability and is mainly applied to automobile windshields.

For overcoming the problems of irregular shape, uneven element distribution and partial agglomeration of metal elements of a positive electrode active material prepared by a method in the prior art, the invention provides a preparation method for the positive electrode active material, comprising the steps of S1, mixing a reaction seed crystal with a complexing agent solution, wherein the reaction seed crystal is hydroxide of one or more of nickel, cobalt, manganese or aluminum; and the D50 of the reaction seed crystal is less than or equal to 2-6 [mu]m; S2, under a condition of stirring and ultrasonic processing, adding a metal salt solution and a precipitator solution, regulating PH to 9-13; and then washing and drying to obtain a precursor, wherein the metal salt solution is a solution containing nickel salt, cobalt salt, manganese salt and aluminum salt; and S3, mixing the precursor with a lithium source, performing heat preservation at a temperature of 500-950 DEG C for 2-24h, and cooling. Meanwhile, the invention also discloses the positive electrode active material prepared by the method. The positive electrode active material provided by the invention is regular in shape, high in degree of sphericity, uniform in element distribution and free of partial agglomeration of metal elements; and in addition, the positive electrode active material is high in cycling performance, thermal stability and security.

The invention discloses an ERI configuration phosphorous-aluminum molecular sieve membrane having a high CO2 separation performance. The ERI configuration phosphorous-aluminum molecular sieve membrane comprises a porous support body and is characterized in that a membrane formed from a SAPO-17 or AlPO-17 zeolite molecular sieve crystal covers the surface of the porous support body. According to the preparation method, a nanometer T type molecular sieve is adopted as a crystalline state silicon source to induce the synthesis of the high-crystallinity submicron SAPO-17 molecular sieve crystal, and the compact ERI configuration AlPO-17 or SAPO-17 molecular sieve membrane is synthesized on the surface of the porous support body by adopting the crystal as the crystal seed through a secondary hydrothermal method, wherein the molecular sieve membrane has advantages of uniform crystal size, compact growth, uniform thickness, high crystallinity, complete coverage, and high carbon dioxide separation performance, and is suitable for the separation of the carbon dioxide gas from natural gas and flue gas.

The invention provides a self-supporting binary metal sulfide composite material and a preparation method thereof, a lithium ion battery negative electrode and a lithium ion battery. Compared with themethods in the prior art, Zn / Ni / Co-ZIF material is grown on a carbon cloth through ion exchange at room temperature and then vulcanized under the hydrothermal condition so as to obtain a self-supporting ZnCo2S4 @ NiCo2S4 / carbon cloth composite material. The ZnCo2S4 @ NiCo2S4 array grown uniformly on the carbon cloth fiber provides a large number of redox sites, the migration path of lithium ionsis shortened, and the transition metal sulfide has excellent electrical conductivity and can quickly transmit electrons. The material is applied to the negative electrode material of the lithium ion battery and has the advantages of good cycle stability, high energy density and the like. In addition, the preparation method of the composite material is simple, the conditions are mild and easy to obtain, the requirements for instruments and equipment are low and mass production can be carried out.

The invention provides a poly(ether-ether-ketone) / nano hydroxyapatite dental implant which consists of a neck part and a root part, wherein the matrix material of the dental implant is a poly(ether-ether-ketone) / nano hydroxyapatite composite material; fibronectin or basic fibroblast growth factors are grafted to the neck part; a sub-surface layer of the root part has a micron porous-nano bulge multistage microstructure; and the surface layers of the neck part and the root part are nano hydroxyapatite layers containing Ag<+> and Zn<2+>. The manufacturing method comprises the following steps: (1) preparing a blank; (2) grafting the fibronectin or basic fibroblast growth factors on the surface of the neck part of the blank; (3) soaking the root part of the blank into a decafluoro-naphthalene solution to etch for 0.5-1 hour, and then putting the blank into nano hydroxyapatite powder to adhere a layer of nano hydroxyapatite particles; and (4) soaking the root of the blank in nano hydroxyapatite slurry doped with Ag<+> or Zn<2+> for 1-3 hours. The poly(ether-ether-ketone) / nano hydroxyapatite dental implant provided by the invention ensures that the elastic modulus of the dental implant is matched with human bone tissues, and the dental implant has high bioactivity and continuous antibacterial ability and can improve the long-term success rate of implantation.

The invention discloses an agrocybe cylindracea cultivation material composition. The composition is characterized by using chestnut tree branch chips, corn husk dust and chestnut shell dust as main raw materials, and cotton seed hulls, bran, corn powder and gypsum powder as auxiliary materials, wherein the moisture content of the cultivation material is 63-65%. The invention further discloses a preparation method of the cultivation material composition. Compared with the existing sawdust and cotton seed hull cultivation material, the agrocybe cylindracea cultivation material composition has the advantages as follows: 1, the chestnut tree branch chips, the corn husk dust and the chestnut shell dust are accumulated to be aged and perform biological fermentation under the blazing sun, so that poisonous bacteriostatics are removed, and the macromolecule substances are degraded, which is beneficial to absorption of agrocybe cylindracea mycelia, and then the mycelia grow densely and vigorously; 2, the fruiting performance of agrocybe cylindracea is good, the product shape and properties are good, and the biological efficiency is higher; 3, the cultivation raw material channel is expanded, and the production cost is greatly reduced.

The invention provides a hericium erinaceus cultivation material. The hericium erinaceus cultivation material is characterized in that pecan branch scraps, outer shell scraps and shell scraps are used as main raw materials, cottonseed hulls, rice bran, bean cakes, calcium superphosphate, monopotassium phosphate, land plaster and the like are used as auxiliary materials, and the water content of the cultivation material is 63%-65%. The invention further provides a method for preparing the cultivation material. The hericium erinaceus cultivation material and the method have the advantages that the pecan branch scraps, the outer shell scraps and the shell scraps undergo sun exposure and secondary fermentation or piled ageing treatment, poisonous bacteriostat is removed, macromolecular substances are decomposed, and therefore the decomposed substances can be absorbed by hericium erinaceus hyphae easily; the cultivation material is reasonable in proportion and appropriate in PH, the hericium erinaceus hyphae are dense in growth, fruiting bodies are good in growth, and the biological efficiency reaches 123.5%-135.1%; a solution to innocent treatment of pecan branches, outer shells and shells is provided, and a novel matrix for hericium erinaceus cultivation is further found out.

The invention discloses a super dewatering film preparing method on the Al surface, which comprises the following steps: formulating the organic coating film with the electrolysis solution by selecting 0.5-5mmol / l water-soluble triazoxide organic compound salt and 0.25-5mol / l basic supporting electrolysis salt; regarding the roughening and cleaning aluminium surface as the working electrode and putting in the electrolysis solution; proceeding with the organic coating with tri electrode method (the coating temperature is 5-25Deg. C, the current density is 0.5-10A / m2, the coating time is 30s-50min); preparing a layer dense super dewatering film with super dewatering function characteristic and binding the organic film with aluminium basis surface tightly by the conjugated linkage. The invention can be used for the large-area super dewatering modifying property on the aluminum surface, in particular to the specially-shaped and complicated parts. The method is provided with the simple operation, the easy industrialization characteristic.

The invention discloses a slope vegetation establishing method and belongs to the field of slope protective vegetation recovery projects. By means of a slope greening method, a forest blanket is fixed on a slope through rivets, plants are planted on the forest blanket and then a plant nutrient solution for drip irrigation is arranged at the top end of the forest blanket and used for plant irrigation and maintenance, wherein the forest blanket is special in structure and low in cost, space and growth conditions are provided for grass, shrubs and trees, and finally, plant roots grow into the slop stably. With adoption of the method, forest vegetation can be established well on various types of slopes without plant growth conditions, a construction process is simple, out-of-season planting can be realized, construction speed is high, water resources are saved, the shrubs, the trees, lianas and the grass are planted on the blanket instead of holes, a plant growth substrate is constructed by laying instead of spraying, and the method is low-carbon, environment-friendly and efficient.

The invention provides a microwave ceramic dielectric material and a preparation method thereof. The microwave ceramic dielectric material comprises a main crystal phase, a modifying additive and a sintering cosolvent, and a structural formula of the main crystal phase is xCaTiO3-(1-x)LaAlO3, wherein x is greater than or equal to 0.68 and less than or equal to 0.72; according to molar content in microwave dielectric ceramic, the modifying additive comprises 0-1.0% of Nb2O5, 1-5% of Sm2O3, 0.1-0.5% of CeO2 and 0-1% of Co3O4, and the sintering cosolvent comprises 0-2% of B2O3, 0.5-4% of SiO2, 0-1% of Bi2O3, 0-0.5% of MnO and 0-0.5% of V2O5. The microwave ceramic dielectric material can be sintered at 1150 DEG C-1200 DEG C, cost can be saved, and high Qf value of 43000GHz-48000GHz can still be maintained.

The invention discloses a (BaNdSmPr)Ti5O14 microwave ceramic medium material as well as a preparation method thereof, the material is composed of a main crystal phase, a modified additive and a sintering fluxing agent, the structural formula of the main crystal phase is BaNd(2X)(Sm(0-1 / 3)Pr(0-1 / 3))2(1-x)Ti5O14 (0.6<=X<=0.8), and the modified additive is one or more of Bi2O3, MnO, CaO and SnO2; and the sintering fluxing agent is one or more of B2O3, SiO2 and ZnO. The microwave medium ceramic material obtained by adopting the fast pre-sintering solid phase method process has the advantages of uniform material, even particle size distribution, high dispersion, good forming process and high quality of factors, and meets the requirements of environmental protection.

The invention relates to low-radiation coated glass, which relates to the further-processing field of the glass, and comprises a glass substrate, a dielectric medium layer, a sacrifice layer, a protective layer and a silver (Ag) film layer, and is characterized in that: the Ag film layer is deposited on a metal oxide (MOx):Antimony (Sb) film layer, in the MOx:Sb layer, M is one or the combinationof Zn, Ti, Sn and Zr, and when M is Zn, x is valued as: X is more than zero and is less than or equal to 1; when M is one of Zn, Ti, Sn and Zr, x is valued as: x is more than zero and is less than orequal to 2; and when M is a combination of Zn, Ti, Sn and Zr, x is valued as: x is more than zero and is less than or equal to 3. The low-radiation coated glass has the advantages that: the Ag film layer is directly deposited on the MOx:Sb film layer, so the Ag film layer trends towards the growth in a two-dimensional shape, and Sb has an effect which is similar to a surface active agent. The surface active agent is an element which can be grown on the film layer by layer on the aspect of dynamics, and the surface roughness of the film can be reduced by utilizing the surface active agent, so the growth of the film layer can be more uniform.

The invention relates to a ZnO-mixed cathode buffer layer-based organic solar battery. An inversion structure is adopted by the organic solar battery; the organic solar battery comprises a substrate layer, a transparent conductive cathode layer, a cathode buffer layer, a photoactive layer, an anode buffer layer and a metal anode layer which are sequentially arranged from bottom to top; and the cathode buffer layer is a solid thin film which is formed by mixing a ZnO nano-particle dispersion liquid and a ZnO precursor solution prepared through a sol-gel method at a ratio and carrying out thermal annealing. The invention further discloses a preparation method of the battery. The cathode buffer layer is prepared through mixing a certain amount of ZnO precursor solution prepared through the sol-gel method into the large-particle size ZnO nano-particle dispersion liquid, and gaps among ZnO nano-particles can be filled while relatively large contact area of the cathode buffer layer and the photoactive layer is ensured, so that the defect of the cathode buffer layer is reduced and the photoelectric conversion efficiency of a device is effectively improved.

The invention discloses a preparation method for a lithium-rich manganese based anode material hydroxide precursor. The method includes the steps of: (1) preparing a mixed solution of a nickel salt, a cobalt salt and a manganese salt according to the mole ratio of Mn, Co and Ni in the hydroxide precursor's molecular formula MnxCoyNi1-x-y(OH)2, wherein x is greater than 0.5 and smaller than 1, y is greater than 0 and smaller than 0.5, and x+y is smaller than 1; (2) preparing an additive containing alkaline aqueous solution, and preparing a composite complexing agent solution containing EDTA, chitosan and ammonia water; (3) under inert gas protection, merging the mixed solution of the nickel salt, the cobalt salt and the manganese salt, the alkaline aqueous solution and the composite complexing agent solution and injecting the mixture into a continuous reaction kettle to carry out continuous reaction, controlling the average concentration of EDTA, chitosan and ammonia ions in the reaction solution, and controlling the reaction pH value at 9-13, the reaction temperature at 30-80DEG C and the stirring speed at 100-2000rpm; and (4) filtering, washing and drying the liquid naturally discharged from the reaction kettle. The lithium-rich manganese based anode material hydroxide precursor prepared by the method provided by the invention has the characteristics of uniform components, controllable particle size and compact growth.

The invention provides a method for making dwarf banana plants short and strong. The technological method comprises the steps that when field planting is completed in spring and cauloids of the dwarf banana plants are 1.0-1.3 meters high, paclobutrazol is applied to each dwarf banana plant, wherein 0.3-0.5 gram of paclobutrazol is mixed with 500-1000 milliliters of water, then the mixture of the paclobutrazol and the water is sprayed to the heads or the intersection portions of petiole base portions and the base portions of the cauloids of the dwarf banana plants, and then the dwarf banana plants grow for one month in the natural environment; then the leaf distance is obviously increased, and the paclobutrazol is applied to each dwarf banana plant for the second time, wherein 0.5-1.0 gram of paclobutrazol is mixed with 500-1000 milliliters of water, the mixture is sprayed to the heads or the intersection portions of the petiole base portions and the base portions of the cauloids of the dwarf banana plants, and the dwarf banana plants grow in the natural environment for one month; then the leaf distance is obviously increased again and the paclobutrazol is applied to each dwarf banana plant for the third time, wherein 1.0-2.0 grams of paclobutrazol is mixed with 500-1000 milliliters of water, and the mixture is sprayed to the heads or the intersection portions of the petiole base portions and the base portions of the cauloids of the dwarf banana plants. According to the method for making the dwarf banana plants short and strong, the wind resistance of the dwarf banana plants is improved, the dwarf banana plants are convenient to manage, and the yield and the quality of the dwarf banana plants are not influenced.

The invention discloses an application of beta-nicotinamide mononucleotide (NMN) in products for preventing alopecia or promoting hair growth, and relates to the technical field of products for preventing alopecia or promoting hair growth. Research results show that mice in a control group and mice in a test group have no significant difference in weight in a whole test period, and the growth condition of the mice is good, which illustrates that the NMN has no toxic or side effect; compared with a blank group and a model group, after 8 weeks of high-dose intragastric administration, the hair of the mice grows more densely, the numbers of corium layer hair follicles in hair removal areas of the high-dose group are slightly reduced, the structures of residual hair follicles are basically complete, sebaceous glands are slightly reduced, but the improvement of the low-dose group is not obvious, and thus it is suggested that the NMN can promote hair growth of the depilated mice.

The invention provides a method for preparing a PEG modified g-C3N4-Cu2O compound catalyst and an application thereof. The method comprises the following steps: preparing a first solution including dissolved Cu<2+> ions and PEG-400; adding protonated g-C3N4 into the first solution, stirring, and performing ultrasonic treatment to obtain a suspension liquid; adding xylitol into the suspension liquid under a stirring state, adjusting the pH value to 10-12, and stirring to obtain a mixed liquid; heating the mixed liquid to 150-200 DEG C in a high-pressure reaction container, reacting at constant temperature for 25-35 hours, and naturally cooling to obtain a reacting product; and separating solid and liquid of the cooled reacting product, washing, and drying in vacuum to obtain a solid product; and heating the solid product to 150-250 DEG C under the protection of an inert gas atmosphere, and keeping constant temperature for 1-3 hours to obtain the g-C3N4-Cu2O compound catalyst. The compound catalyst has stronger visible light absorbability, reinforced photocatalytic performance and reinforced stability.

The invention discloses a preparation method of a 3D printing material. The preparation method comprises the steps of extracting cobalt chloride and nickel chloride into an organic extraction agent, and compounding metatungstic acid into a solution; after the extraction agent containing cobalt and nickel and the metatungstic acid solution enter a mist spray chamber for a reaction in the form of mist spray, pouring out all materials in the mist spray chamber, and conducting filtration through a centrifugal machine; after a solid is washed, adding a glucose solution for slurrying; conducting mist spray drying, putting dried materials into a high-temperature furnace for calcination, and meanwhile, introducing inertia atmosphere, wherein the calcination portion is divided into three temperature areas; lowering the temperature till the temperature of the materials ranges from 25 DEG C to 30 DEG C; pouring the materials obtained after temperature reduction into a storage tank full of nitrogen; and then, conducting crushing through a nitrogen-protected airflow crusher, so that the 3D printing material is obtained. The preparation method of the 3D printing material is simple in process; and the 3D printing material which is high in apparent density, narrow in size distribution and high in hardness and strength can be obtained.

The invention discloses a preparation method of a friction-reduction anti-adhesion nano organic film based on a micro device, comprising the following steps of: with aluminum, copper, magnesium and alloys thereof used in a micro / nano electromechanical system as substrate materials, matching different substrate materials selected from different water-soluble triazine organic compound salts with alkaline-support electrolysis salts; and preparing the nano organic film with hydrophobic function, friction reduction and adhesion resistance by adopting a three-electrode mode constant-current, cyclic-voltammetry and constant-potential organic film plating technology. A static contact angle of the prepared nano organic film and distilled water can reach above 110 degrees, a friction coefficient can be reduced below 0.05, the maximum adhesive force can be reduced to 103mN, the friction coefficient and the adhesive force can be effectively reduced, and the film thickness is controllable. The invention has the advantages of simple process, short period and low cost and easy industrialized production and can be widely used for the friction reduction and adhesion resistance of the micro device in the micro / nano electromechanical system and improve tribological characteristics.

The invention provides a method for reducing leakage current of a formed foil, and particularly relates to a solution for hydration treatment of the formed foil and a hydration treatment method. The solution is an aqueous solution containing a component A, a component B and a component C. The component A is a substance containing SO4<2->, the component B is weak acid, and the component C is weak acid salt. According to the formed foil obtained by performing hydration treatment in the aqueous solution, the generated hydrated alumina layer is more compact, the problem of hole blockage caused bythe thickness of an alumina film in the ultrahigh-voltage formation process is solved, the leakage current is reduced, the specific volume is improved, and the service life of the aluminum electrolytic capacitor is prolonged.

The invention provides a preparation method and application of a glutamic acid modified g-C3N4-Cu2O composite catalyst. The method comprises the following steps: acquiring a first solution comprising a Cu2+ ion at a dissolved state and a glutamic acid; adding protonated g-C3N4 into the first solution, stirring, conducting ultrasonic treatment to obtain a suspension liquid; adding xylitol into the suspension liquid at the stirring state, regulating the pH value to 10-12, stirring to obtain a mixed solution; heating the mixed solution to 150-200 DEG C in a high pressure reaction vessel, reacting at the constant temperature for 25-35 hours to obtain a reactant; conducting solid-liquid separation on the cooled reactant, cleaning, drying in vacuum, and obtaining a solid product; heating the solid product to 150-250 DEG C under the protection of an inert gas, keeping the constant temperature for 1-3 hours, and obtaining the g-C3N4-Cu2O composite catalyst. The composite catalyst is stronger in visible light absorption capability, and the photocatalytic performance and the stability are strengthened.

The invention discloses a preparation method of a titanium dioxide / hollow microsphere composite filler. According to the method, a reversed-phase microemulsion system is adopted, an organic titanium source is slowly hydrolyzed on an oil / water interface through ultrasonic oscillation formed by small-frequency-band ultrasound, the surfaces of the hollow microspheres can be better coated with titanium dioxide crystal nucleuses due to the fact that the titanium dioxide crystal nucleuses are generated on a water phase layer; meanwhile, the reaction speed is controlled through two-step temperature rising, and the higher titanium dioxide film forming effect is achieved. According to the composite filler prepared by the method, the coating uniformity of titanium dioxide on the surfaces of the hollow microspheres is improved, so that the filler has obvious reflection performance and heat insulation and heat preservation effects.

The invention discloses a method for reducing farmland drainage canal nitrogen and phosphorus loss through charcoal.By means of the high adsorbability of charcoal for nitrogen and phosphorus, aquatic plants are planted in a soil matrix containing charcoal and placed in a farmland drainage canal in a frame mode, and therefore the distribution layout of aquatic plants in the ecological canal is controlled; by means of the absorption and adsorption effect of the aquatic plants and the charcoal in the soil matrix on nitrogen and phosphorus on canal water, the nitrogen and phosphorus concentration in the canal water is lowered, the purpose of reducing the nitrogen and phosphorus loss is achieved, the aquatic plants in the canal can be prevented from growing too densely, and therefore the smooth waterflow in the canal is ensured.The method is low in investment cost, and easy to operate and implement.

The invention discloses calathea insignis nutrient solution, which is characterized in that: each liter of calathea insignis nutrient solution comprises the following components: 54 to 56g of Peters 20-10-20, 9 to 11g of Peters 15-20-25, 14 to 16g of KNO3 and 14 to 15g of MgSO4. Compared with the prior art, the invention has the advantages that: the calathea insignis cultured by the nutrient solution is stronger in plant, dense in branches and leaves, rich in plant type, pure in leaf color and green and bright in leaf surface; compared with the calathea insignis cultured by other types of nutrient solution, the calathea insignis has the growth period shortened by 2 months, and hardly suffers from leaf chlorosis symptom.

The invention discloses a spike pruning method for Benibalad grape. Watering is carried out once in the early stage of grape blooming, namely 0%-30% of the grape blooms, and the water quantity of 35-40 kg; the flower spike is trimmed after the full-bloom stage, namely 70-80% of the grape blooms, an auxiliary spike, and three to five branches on the upper part of the spike shoulder are trimmed, a spike tip is not trimmed, and twenty to twenty-three branches of the whole flower spike are kept. After the flower spike is trimmed, the width of the spike shoulder is maintained, the width of the spike tail is 3-4.5 cm, and the length of the spike is 11-13 cm. Through quantitative watering and timely flower spike trimming, the distribution of plant hormones in the spike is regulated, the hypogenetic inflorescence of grape variety with high natural fruit setting rate is enabled to realize bloom dropping and bud falling, the flower thinning effect is realized, the competing for nutrients in the blooming process of the flower buds is reduced, the size of the grape spike is controlled, the fruit size is increased, the workload of fruit thinning is reduced, and the fruit quality is improved.

The invention belongs to the technical field of industrial catalysis, and mainly discloses a preparation method for a 2D / 2D nitrogen-doped lanthanum titanate / sulfur-indium-zinc heterojunction photocatalyst and an application of the 2D / 2D nitrogen-doped lanthanum titanate / sulfur-indium-zinc heterojunction photocatalyst in hydrogen production by photocatalytic decomposition of water under full-lightirradiation. According to the invention, with a nitrogen-doped lanthanum titanate (N-La2Ti2O7) nanosheet as a substrate and polyfunctional trisodium citrate as a surfactant, the ZnIn2S4 nanosheet uniformly grows on the surface of the N-La2Ti2O7 nanosheet under a hydrothermal treatment condition, and a tight contact surface veneering type II-type heterojunction structure is formed between the ZnIn2S4 nanosheet and the N-La2Ti2O7 nanosheet, so the key problem of easy compounding of electron-hole pairs in a photocatalytic reaction process is well solved. The photocatalytic efficiency, the photo-induced electron migration path and the reaction mechanism of the catalyst are further determined through characterization of a photocatalytic water splitting hydrogen production activity test, a scanning electron microscope, a transmission electron microscope, ultraviolet-visible diffuse reflection, a PL fluorescence spectrum and the like. The series of catalysts are simple in preparation process, low in raw material cost, high in activity and applicable to large-scale production and practical application.