95results about How to "Good floating performance" patented technology

The invention provides formation technology for a flexible packing lithium ion secondary battery, which is characterized in that the assembled battery is charged by using multi-step constant current and constant voltage and discharged by using the constant current; and the flexible packing lithium ion battery is circularly charged and discharged by using the constant current, wherein the upper limit voltage of the charging of the multi-step constant current, the upper limit voltage of the charging of the constant voltage and the upper limit voltage of the charge-discharge cycle of the constant current are between 4.25 and 4.5V. The formation technology is suitable for the flexible packing lithium ion battery of which the lithium manganate and the lithium ferrous phosphate are anode materials and the implementation is simple; in addition, the formation technology can obviously improve the cycle performance and the floating charge performance of the battery, and has high popularization value.

The invention relates to a preparation method of floating embedding bacterium agents for in-situ remediation of oil polluted water, specifically relating to a technology for fixing oil degradation bacteria by using expanded graphite, sodium alginate and calcium chloride, absorbing and degrading to purify the petroleum polluted water. The preparation method of the floating embedding bacterium agents comprises the following steps: adding petroleum degrading bacteria liquid into sodium alginate sol containing the expanded graphite, mixing uniformly, dropping into calcium chloride solution and cross-linking overnight at 4 degrees centigrade to obtain the floating embedding bacterium agents fixing hydrocarbon degradation bacteria. The floating embedding bacterium agents prepared by the preparation method has the advantages of high mechanical strength, good floatability and mass transfer performance and high degradation efficiency; the floating embedding bacterium agents can be directly put onto the surface of the petroleum polluted water; the embedding bacterium agents can float on an oil-water interface for long term so as to ensure effective contact between the bacterium agent and the petroleum; the embedding technology increases the concentration of microorganisms, prevents the bacteria influencing by the water using environment, effectively improves the degradation efficiency, recovers and recycles conveniently and has no secondary pollution risk.

The application relates to electrolyte and an electrochemical device using the electrolyte. The electrolyte includes a compound containing the -CN functional group and a compound containing the P-O key. By simultaneously introducing the compound containing the -CN functional group and the compound containing the P-O key into the electrolyte, the active material is better protected; and thus, the floating charge performance and the nailing performance of the battery are effectively improved and the loop impedance is increased.

The invention discloses preparation and application of a floatable magnetic hollow material for removing heavy metal in water and soil. Agricultural wastes of musaceae, such as banana, dried-up leaves, corn dried-up leaves and rice husks are combined with alginate to prepare the floatable magnetic hollow material containing nanometer ferroferric oxide and nanometer ferrous chloride, and the floatable magnetic hollow material is applied to remove the heavy metal in the water and the soil, so that not only is the resource utilization of the agricultural wastes developed, and a new way is opened for farmer income increase, but also the prepared nanometer ferrous chloride and nanometer ferroferric oxide and a high-quality porous biological carbon material have a high-efficient heavy metal adsorption capability, the hollow material with magnetism and floated on a water surface can be conveniently recovered, and the heavy metal in the water and the soil is removed. The floatable magnetic hollow material provided by the invention is wide in application range, can be used for renovating the water with heavy metal pollution such as urban or industrial sewage, rivers, pools and lakes, and can be also used for renovating the soil with heavy metal pollution such as rice fields, water vegetable fields and green plant fields.

The invention relates to a method for preparing hollow ball ammonium phosphate salt fireproof powder with spray drying method. First, dissolving the mammonium dihydrogen phosphate and auxiliary agent into water to prepare the lead solution; then, atomizing said solution via nozzle to attain the atom drop in micron level; contacting the atom drop with hot airflow to be dried to attain the hollow ball powder; adding modifying agent on the powder to process surface modifying treatment; at last, using collector to collect the powder. The invention has simple process and stable operation, while the powder has high ball degree, less density, long floating time and better fireproof effect.

A slider including a magnetic head part, an optical waveguide, and a near field element is fixed by first and second adhesives to a submount on which a semiconductor laser and a mirror are mounted, the mirror being placed at one end of the semiconductor laser in a resonance direction thereof and reflecting a laser in a direction intersecting with the resonance direction. At this time, at least parts of the first and second adhesives are applied to a position opposed to the semiconductor laser with an intermediation of the submount. The first adhesive having a higher Young's modulus than that of the second adhesive is applied onto an inflow end side of the slider including a solder connection portion, the second adhesive being applied onto an outflow end side of the slider.

The invention relates to a preparation method of a porous titanium dioxide thin film, which comprises the following steps: using hollow glass beads as matrices, using Cu-Zn or Cu-Mn alloy as a target and depositing a Cu-Zn or Cu-Mn alloy thin film by magnetron sputtering equipment; carrying out dealloying processing by adopting an acid or alkali solution, then cleaning to a neutral state by deionized water and carrying out vacuum drying; after drying, coating the porous copper glass beads and carrying out surface deposition of titanium dioxide by the magnetron sputtering equipment to obtain porous titanium dioxide. The porous titanium dioxide thin film prepared by the preparation method increases the surface area of titanium dioxide, has better catalysis performance under the irradiation of ultraviolet light and can have wider application prospect in the fields of wastewater treatment, air purification and photocatalysis.

A slider including a magnetic head part, an optical waveguide, and a near field element is fixed by first and second adhesives to a submount on which a semiconductor laser and a mirror are mounted, the mirror being placed at one end of the semiconductor laser in a resonance direction thereof and reflecting a laser in a direction intersecting with the resonance direction. At this time, at least parts of the first and second adhesives are applied to a position opposed to the semiconductor laser with an intermediation of the submount. The first adhesive having a higher Young's modulus than that of the second adhesive is applied onto an inflow end side of the slider including a solder connection portion, the second adhesive being applied onto an outflow end side of the slider.

The invention discloses a holothurian culture water quality restoration agent for effectively removing water eutrophication and a preparation method and application of the holothurian culture water quality restoration agent, belonging to the technical field of aquaculture and marine microorganisms. Aiming at the physiological habit and culture characteristic of holothurian, a marine microorganism technology is applied, the restoration agent consists of bacillus flexus CGMCC No.5115, bacillus subtilis CGMCC No.5116 and bacillus cereus CGMCC No.5117 separated and screened from a holothurian culture environment, corn meal and soya bean meal serving as major culture raw materials are fermented at the temperature of 28-37 DEG C for 24-48 hours, and attapulgite, medical stone and rice hull serving as adsorption and suspension composite carriers are used for processing to obtain the holothurian culture water quality restoration agent for effectively removing water eutrophication. The product can adsorb harmful substances such as heavy ions including Hg<2+>, Pb<2+>, Cr<6+>, Cd<2+>, and Cu<2+> in water bodies, and the content of harmful substances such as ammonia nitrogen, nitrite, and hydrogen sulfide can be greatly reduced. Bottom odor and acidification of water bodies are avoided, pathogenic microorganisms are inhibited effectively, holothurian diseases are prevented, and the holothurian culture yield and quality are improved.

The invention relates to an unmanned aerial vehicle (UAV) for river water sample testing. The UAV comprises a main body, two support frames and four propellers and further comprises two floating mechanisms and two sampling mechanisms, wherein the sampling mechanisms comprise lifting and lowering assemblies and sampling assemblies; the lifting and lowering assemblies comprise driving units, telescopic frames, lifting and lowering plates, hinge blocks and moving blocks; the sampling assemblies comprise sampling boxes; sampling units, sample taking barrels, pistons and sample taking tubes are arranged in the sampling boxes; the floating mechanisms comprise rotating assemblies and floating assemblies; and the floating assemblies comprise floating air cushions and first air pumps. The UAV for river water sample testing is capable of realizing the function of multiple-site sampling through the sampling mechanisms, improving the work efficiency of the UAV, enabling the UAV to float on the water through the floating mechanisms, improving the floating effect, and improving the safety of the UAV.

The invention discloses a double-column flexible aquaculture purse seine in a shallow sea, and belongs to the technical field of purse seine aquaculture devices. The purse seine comprises column pilesconnected with a seabed and a main net connected with the column piles, the top ends of the two longitudinal column piles are fixed by cross bars, the column piles are symmetrically arranged at bothsides of the main net, the section of the main net is X-shaped, the junctions of the main net are connected by steel ropes, and the upper part of the main net is fixed with the upper ends of the column piles through lassos; the lower part of the main net is fixed with the lower ends of the column piles through lassos and buried into the seabed, the column piles are fixed with the seabed of the shallow sea through pile bases, the column piles are fixed with the pile bases through fixing devices, and a double-layer net with netting large in mesh size is arranged on the portion, between a high tide place and a low tide, of the main net. According to the technical scheme, the situation can be avoided that netting is damaged because the purse seine is stacked and entwined at different tide places; the stability and the capability for resisting wind and waves of the whole structure of the aquaculture purse seine can be improved; the purse seine has the advantages of being applicable to large-scale purse seine engineering in shallow seas, simple in construction, economical, environmentally friendly and high in universality and sustainability.

The invention relates to an electrochemical device and an electronic device comprising the same. The electrochemical device comprises a positive electrode, a negative electrode, an isolating membraneand an electrolyte, wherein the electrolyte contains a nitrile compound and transition metal ions, and satisfies 5 < = A / B < = 30,000, the molar percentage of cyano groups in the electrolyte is A% based on the molar weight of the electrolyte, and the weight percentage of the transition metal ions in the electrolyte is B% based on the weight of the electrolyte. The electrochemical device reduces dissolution of transition metal ions of the positive electrode active substance and stabilizes structural distortion of the positive electrode active substance in the charging and discharging process bydetermining that cyano groups and the transition metal ions in the electrolyte meet a certain relationship, so that the high-temperature cycle performance and the floating charge performance of the electrochemical device are improved.

An efficient fire-extinguishing agent of superfine powder is prepared from ammonium phosphate, SiO2 and stearate. Its advantages include small granularity less than 10 microns, large specific surface area, high flowability and dispersity, high fire extinguishing effect, no poison and no pollution.

The invention relates to a holothurian culture water body remediation agent prepared by a mixed fermentation process and a preparation method and application thereof. Based on physiological habits and culture characteristics of holothurian the holothurian culture water body remediation agent consists of bacillus flexus CGMCC No.5115, bacillus subtilis CGMCC No.5116 and bacillus cereus CGMCC No.5117 which are separated and screened in a holothurian culture environment according to a marine microorganism technology. The preparation method comprises the steps: fermenting by using corn flour and bean pulp as main culture raw materials at a temperature of 28-37 DEG C for 24-48h, and processing by using zeolite, kieselguhr and rice hull as adsorption and suspension compound carriers, to obtain the holothurian culture water body remediation agent prepared by the mixed fermentation process. The holothurian culture water body remediation agent has high water environment tolerance and good floatability, suspension property and floating controllability, is beneficial to a three-dimensional purification effect of a seawater culture water body, and has the advantages of preventing the water body from being acidized or suffering from odor bottom, effectively inhibiting pathogen microorganisms, preventing holothurian diseases, and improving yield and quality of holothurian culture.

The invention discloses a holothurian aquaculture water modifier for removing impurities and inhibiting harmful microbe propagation with a one-step method, and a preparation method and application of the holothurian aquaculture water modifier. Aiming at physiologic nature and cultivation characteristics of holothurian, and through use of the marine microbial technology, the holothurian aquaculture water modifier comprises bacillus flexus CGMCCNo.5115, bacillus subtilis CGMCCNo.5116 and bacillus cereus CGMCCNo.5117, which are separated and screened from the holothurian culture environment. The preparation method comprises the following step: using corn flour and soya bean flour as main culture materials, fermenting the materials at 28-37 DEG C for 24-48 hours, using a medical stone and rice husks as adsorption and suspension carriers, and processing to obtain the holothurian aquaculture water modifier for removing impurities and inhibiting harmful microbe propagation with the one-step method. The holothurian aquaculture water modifier is beneficial to the three-dimensional purifying effect of the marine aquatic water, can adsorb hazardous substances of heavy metal ions such as Hg2+, Pb2+, Cr6+, Cd2+ and Cu2+ in the water, greatly reduces the content of hazardous substances such as ammonia nitrogen, nitrite and hydrogen sulfide, deodorizes by using flowing water, effectively inhibits pathogenic microorganisms, prevents holothurian diseases, and improves yield and quality of holothurian aquaculture.

The invention discloses an electrolyte and an applied electrochemical device, which relate to a lithium ion battery and an electrolyte thereof. The electrolyte contains at least one of a fluorinated cyclic sulfate, a fluorinated cyclic sulfite, a fluorinated cyclic sulfonate, and a fluorinated cyclic sulfone. The electrochemical device comprises a positive plate containing a positive active material, a negative plate containing a negative active material, an isolating membrane and the electrolyte, and the electrolyte is the above electrolyte. High voltage, high magnification, high-temperature cycling stability and high-temperature storage and floating charge performance of the electrochemical device can be improved at the same time.

The invention relates to the field of sea surface oil stain treatment and discloses a calcined shell micropore structure-based sea surface oil stain treatment micropowder preparation method. The preparation method comprises A, calcining shells at a temperature of 300-500 DEG C for 20-50min, heating the shells to a temperature of 700-850 DEG C in 10min, carrying out constant temperature calcining for 5-10min, carrying out cooling to a temperature of 400-600 DEG C in 5-10min and carrying out natural cooling to the normal temperature, B, breaking the shells to obtain shell micropowder and carrying out surface modification, C, carrying out mixing foaming on the surface-modified shell powder, carboxymethylcellulose, polyether polyol, isocyanate, a catalyst and water to obtain a hard foam material and D, crushing the hard foam material to obtain a finished product. The oil stain treatment micropowder has a good oil-absorption capability and good dispersibility and floatability on the sea surface, can be degraded naturally and is environmentally friendly.

The invention belongs to the fields of chemical materials, high polymer materials and the like, and relates to a self-floating photothermal conversion hydrogel material with improved photothermal conversion efficiencyfor seawater desalination as well as a preparation method and application of the self-floating photothermal conversion hydrogel material. The self-floating photothermal conversion hydrogel is successfully prepared in a physicochemical double-crosslinking mode by combining hydrogel matrix macromolecules and a photothermal conversion component, wherein the hydrogel matrix macromolecules are prepared by blending a hydroxyl-containing hydrophilic polymer aqueous solution in the presence of acrylamide, an initiator, a crosslinking agent and aerogel, and the photothermal conversioncomponent refers to cuttlefish juice. The prepared self-floating photothermal conversion hydrogel has good mechanical properties, good sunlight absorption performance and good water surface thermal positioning performance, the preparation process is simple, the energy consumption is low, and the self-floating photothermal conversion hydrogel has good reusability, is suitable for practical application and is an ideal choice for seawater desalination and water purification.

The invention discloses a nano gelatin / polymer composite fiber belt preparation method based on seawater uranium extraction. The preparation method comprises following steps: step one, preparing a nano gelatin / polymer fiber belt: individually dissolving gelatin and polymers, then mixing two solutions according to a certain ratio, evenly stirring to obtain a spinning solution, carrying out electrostatic spinning, drying, and cutting to obtain the nano gelatin / polymer fiber belt; and step two, curing tannin, soaking the nano gelatin / polymer fiber belt in a tannin water solution for 1 to 10 hours, taking out the fiber belt, then transferring the fiber belt to distilled water, stirring, adding a crosslinking agent, carrying out crosslinking for 2 to 6 hours at a temperature of 20 to 50 DEG C,taking out the fiber belt, washing, and drying to obtain the nano gelatin / polymer composite fiber belt with cured tannin. The fiber belt is prepared by weaving nano level fibers; the diameter is small, the specific surface area is large, the amount of cured tannin is large; the provided fiber belt has an extremely high adsorbing performance on low concentration uranium, moreover, the hydraulic performance, floating property, and water surging performance of the fiber belt are good, and thus the fiber belt can be used to separate and enrich uranium in seawater, salt lakes, and radioactive wastewater.

The invention relates to a positive electrode comprising a graphene layer, and a water system energy storage device comprising the positive electrode. The positive electrode comprises a positive electrode current collector, a positive electrode active material layer formed on the positive electrode current collector, and a graphene layer or a graphene derivative layer formed on the positive electrode active material layer, wherein the positive electrode active material layer comprises a positive electrode active material, and metal ions can reversibly release from and embed into the positive electrode active material. The water system energy storage device comprising the positive electrode can obviously restrain side reactions of the positive electrode active material during charging, so that the performance of a secondary battery can be improved.

The invention discloses South America white shrimp compound feed and a preparation method thereof, and belongs to the technical field of aquatic feed and preparation thereof. The South America white shrimp compound feed comprises 8-12 parts of vinasse, 10-16 parts of sugar protein residuals, 5-8 parts of fish meal, 30-34 parts of bean pulp, 2-3 parts of fish oil, 2-3 parts of soybean oil, 5-7 parts of corn gluten meal, 2-5 parts of corn starch, 15-18 parts of whole wheat flour, 0.5-1 part of mineral element premix, and the like. According to the preparation method, a high-temperature expansion technology is adopted, so that the granularity of the feed is more uniform, powder hardly exists, and the feed has good stability and floatability when in water. On the premise of fully meeting the requirement for nutrients required by growth and development of South America white shrimps, the cost of the feed is greatly reduced, and cultivation benefits are increased.

The invention discloses a wheeled loader. The wheeled loader, in terms of design, is mainly characterized in that vacuum tubeless vacuum tires having large ground-contact area and adaptive to desert conditions are selected, an engine with good wind-sand prevention and strong power is adopted, a hydraulic oil tank with good radiating performance is adopted, the whole loader is harmonized, a travelling platform meeting ergonomic demands is adopted, an operating device in optimized design is employed, and a desert radiator assembly with large radiating area and high radiating efficiency is employed. The wheeled loader in the optimized design has the advantages that the loader is better in floating performance, dynamic property, trafficability, economy and stability; the product can normally operate in soft places, especially the edge of the desert.

The invention provides a metformin hydrochloride floating sustained-release tablet and a preparation method thereof. The metformin hydrochloride floating sustained-release tablet comprises a tablet core and a non-gastric-soluble coating film wrapped outside the tablet core, wherein the tablet core comprises metformin hydrochloride, a floating material, an adhesive and other excipients, and non-gastric-soluble coating film comprises a film forming material and other excipients. The tablet core is prepared by matching the above materials, and is matched with the non-gastric-soluble coating filmoutside the tablet core, and the density of the tablet core is less than 1g / cm<3>, so that the metformin hydrochloride floating sustained-release tablet can immediately float in water or gastric juice, thereby reducing the possibility of the tablet being discharged from the stomach into the duodenum, and prolonging the time in which the metformin hydrochloride sustained-release tablet floats in the stomach; the metformin hydrochloride floating sustained release tablet can float until the contents of the stomach are emptied, thereby ensuring that the medicine is released in the stomach; the metformin hydrochloride floating sustained-release tablet provided by the invention does not swell substantially in water or gastric juice, thereby reducing the possibility of abdominal distension feeling of a patient.

The invention discloses a carrier-immobilized bacterial inhibition type water purifier for marine aquaculture and a preparation method thereof. The carrier-immobilized bacterial inhibition type water purifier is prepared by adsorbing and curing a mixed fermentation solution containing bacillus subtilis YB-01 CGMCC-No.9756 and brevibacillus laterosporus YB-02 CGMCC-No.9757. The strain of the water purifier is bacillus separated from a seawater source and has an excellent water purification effect and bacterial inhibition effect; kieselguhr and corncob powder are used as viable bacteria carriers, so that the water purifier is high in environmental tolerance, highly controllable in floatability, suspension property and sinking and floating properties and remarkable in three-dimensional purification effect on aquaculture water. By virtue of the water purifier, the harmful materials such as ammonia nitrogen, nitrite and hydrogen sulfide in the marine aquaculture water can be quickly degraded; the heavy metal ions in bottom mud can be efficiently adsorbed; deterioration, acidification and smelly bottom mud of the water can be avoided; the growth of main pathogenic bacteria in the marine aquaculture can be inhibited; diseases can be effectively prevented.

The invention relates to a juvenile Chinese softshell turtle expanded feed. The juvenile Chinese softshell turtle expanded feed comprises the following components in parts by mass: 20 to 25 parts of small trash fishes, 10 to 15 parts of water earthworm meal, 5 to 10 parts of yam flour, 8 to 10 parts of purple sweet potato flour, 4 to 6 parts of orange peel powder, 5 to 8 parts of egg yolk, 4 to 7 parts of egg white, 0.06 to 0.1 part of glycine, 0.5 to 0.8 part of krill oil, 0.1 to 0.15 part of tea polyphenol, 0.05 to 0.1 part of glycine betaine, 0.02 to 0.04 part of monocalcium phosphate, 0.1 to 0.25 part of soybean oligosaccharides, 0.1 to 0.18 part of xylooligosaccharide, and 0.08 to 0.1 part of plant adhesive. The invention also relates to a preparation method of the juvenile Chinese softshell turtle expanded feed. Compared with the prior art, the juvenile Chinese softshell turtle expanded feed has the advantages that the nutrition is rich, the nutrition required by the growth of juvenile Chinese softshell turtle is provided, the survival rate and growth rate of juvenile Chinese softshell turtle are obviously improved, the feed coefficient is reduced, the stability in a water body is good, the easiness in disintegration is avoided, the waste of feed is little, and the pollution to water quality is little.

The invention discloses an anemometry tower provided with a laser anemometer, which comprises a foundation of the anemometry tower. The foundation is provided with a bottom plate, side plates are connected on the peripheral walls of the bottom plate, the bottom plate and the side plates are connected to form a box type structure, a plurality of longitudinal supporting rods in the perpendicular and horizontal direction are mounted on the bottom plate, inclined supporting rods are connected among the longitudinal supporting rods, a tower body is mounted at the center of the bottom plate, an adjustable platform is mounted on the upper portion of the tower body and provided with a platform plate, a lead screw is mounted on the platform plate, one end of the lead screw is connected with the tower body, a main inclined supporting rod is mounted among the tower body and the side plates at least, positioning piles are mounted on the periphery of the bottom plate and are connected with one ends of the main inclined supporting rods, and the other ends of the main inclined supporting rods are connected with the tower body. The laser anemometer can be mounted on the anemometry tower, the anemometry tower is short in manufacturing cycle and low in manufacturing cost and is fine in stability after being positioned and sunk, the platform of the anemometry tower can be adjusted horizontally, the laser anemometer can be stably mounted on the platform of the anemometry tower, and acquisition of accurate data of anemometry can be guaranteed.

The invention discloses conductive silver paste and a preparation method thereof. The conductive silver paste is prepared from the following raw materials in parts by weight: (A) 3-20 parts of a linear oligomer, (B) 20-90 parts of a conductive filler and (C) 1-15 parts of other auxiliary agents, and further comprises a resin carrier, wherein the conductive filler is formed by compounding nano-scale spherical silver powder, micron-scale flaky silver powder and micron-scale rod-like silver powder. According to the invention, the problem that holes are formed in the middle of spherical silver powder particles after the silver paste is solidified is solved, and the defects that flake silver powder is prone to sedimentation, layering and caking are overcome; and the nanoscale spherical silver powder, the micron-sized flaky silver powder and the micron-sized rod-shaped silver powder are compounded to form a three-dimensional network cross-linked conductive path, so that the conductive effect is better.

The invention discloses a cross-opening double-column flexible shallow sea culture purse seine, belonging to the technical field of purse seine culture devices. The culture purse seine comprises column piles connected with a seabed and a main net connected with the column piles, wherein the column piles are staggered at two sides of the main net, the cross section of the main net is x-shaped, intersection points are connected through a steel rope, the upper part of the main net is connected with upper ends of the column piles through through lassos, the lower part of the main net is connectedwith the lower ends of the column piles through lassos and is embedded into the seabed, the column piles are fixed with the seabed through pile foundations, and the column piles are fixed with the pile foundations through fixing devices. The culture purse seine provided by the invention can prevent the purse seine from being piled up and wound at different tide levels to avoid damage to nettings,and has the functions of protecting the nettings and preventing the nettings from intertwining with each other; therefore, the stress of the steel rope is more uniform, and the stability and the windwave resistance of the whole structure of the culture purse seine are improved; and the culture purse seine is simple in construction, economic and environment-friendly, and has the advantages of universality and sustainability.

A method for loading TiO2 photocatalyst on a ferromagnetic metallic film comprises the steps: hollow microballon particle material is taken as a substrate, ferromagnetic metal Ni or Co is taken as sputtering target material, and the metal Ni or Co is evenly coated on the hollow microballon by magnetron sputtering; then, the coated hollow microballon is taken as the material of the substrate, metal Ti as the sputtering target material, and a layer of metal Ti is evenly coated on the microballon which is plated with a metallic film by sputtering; after that, a vacuum chamber is simultaneously pumped with argon and oxygen to lead the Ti to be oxidized as TiO2 at the same time of sputtering, and the TiO2 is sedimentated on the hollow microballon coated by the metal Ni or Co. The method has the advantages that as the ferromagnetic metal materials are sedimentated on the hollow microballon, the TiO2 photochemical catalyst film material prepared by taking the ferromagnetic metal materials as the substrate can be attracted by a magnetic collector, and is convenient for centralized collection when not in use, so that the metallic film can be recycled, saves resource and avoids the secondary pollution for the environment.

The invention relates to the field of application of biological materials, and discloses application of a degradable composite material in oil absorption, and the degradable composite material comprises a three-dimensional network structure formed by fungal hyphae and at least one lignocellulose fragment fixed by the three-dimensional network structure. The degradable composite material has good oil absorption performance and has good application potential in the aspects of petroleum leakage, removal of oil stains on water, treatment of oily wastewater and the like. On the other hand, the problem of treatment of agricultural residues such as straw and wood chips and forestry residues can be solved, the additional value of the residues is increased, environmental pollution is reduced, and coordinated development of economy, ecological environment and society is facilitated.