9results about How to "Large structure" patented technology

The invention relates to the technical field of bactericides, and discloses an oilfield flooding bactericide containing plant bactericidal components and a preparation method thereof. The preparation method comprises the following steps: loading the plant-based traditional Chinese medicine extract and the isothiazolinone-based corrosion inhibitor on the silver-loaded cyclodextrin metal organic framework to prepare an antibacterial agent / silver-loaded cyclodextrin metal organic framework composite material, and mixing the antibacterial agent / silver-loaded cyclodextrin metal organic framework composite material with methyl methacrylate to prepare the antibacterial agent / silver-loaded cyclodextrin metal organic framework composite material. The bactericide obtained by carrying out copolymerization reaction on modified hydroxyquinoline, vinyl quaternary phosphonium salt and methacrylic acid through an in-situ polymerization method can effectively kill and inhibit the breeding of sulfate reducing bacteria and other bacteria in oilfield reinjection water, and has a certain corrosion inhibition effect.

The invention belongs to the technical field of biomolecules, and particularly relates to an SMAD7 gene for judging chicken sex and application. Through the molecular marker and the design of a new PCR primer, the migration distance difference of two bands amplified by a ZW chromosome is 299bp, and compared with the migration distance difference of 150bp of a traditional sex identification gene CHD1 amplification system, the migration distance difference of the bands of the two items is larger, and judgment is easier; the fragments amplified by the designed PCR primer are smaller and are only 517bp and 816p, the PCR amplification time is remarkably shortened, and the sex identification time is shortened; in addition, amplification and agarose gel electrophoresis can be directly carried out by extracting chicken tissues, the sex of the chicken can be rapidly judged according to an electrophoresis result, the DNA extraction time is shortened, the time length can be controlled within 1 hour, operation is easy, the identification result is accurate, basic-level application and popularization are facilitated, and the method has a wide market application prospect.

The invention discloses phenolic resin-based hollow mesoporous carbon microspheres based on accelerated condensation and a preparation method and application thereof, and belongs to the technical field of carbon material preparation, and the preparation method comprises the following steps: in the absence of a surfactant, resorcinol / formaldehyde and tetraethyl silicate react in a water / alcohol system at the temperature of 35-120 DEG C under the catalytic action of ammonia water to obtain phenolic resin-based hollow mesoporous carbon microspheres; and carbonizing the silicon dioxide coated phenolic resin / silicon dioxide microspheres, and removing silicon dioxide to obtain the hollow mesoporous carbon microspheres. The method is simple and convenient to operate, a surfactant does not need to be added, the prepared carbon microspheres have large mesopores and hollow structures, meanwhile, the morphology and the pore structure of the carbon microspheres can be effectively regulated and controlled, and the carbon microspheres are applied as electrode materials and have good electrochemical performance. The hollow mesoporous carbon microspheres can also be applied to the fields of electrode materials, molding compounds, adsorption materials, drug loading or catalysis.

The invention discloses an advanced treatment agent for textile printing and dyeing wastewater and a treatment method. The advanced treatment agent comprises a component A and a component B, the component A comprises modified graphene oxide and an enzyme treatment agent; the component B comprises magnesium aluminum silicate, hydroxyapatite, hydroxypropyl methyl cellulose and chitosan, and the hydroxyapatite is coated with the magnesium aluminum silicate to form a core-shell structure. By adopting a modified graphene oxide immobilized enzyme structure, harmful components in water can be effectively adsorbed, so that the effect of greatly improving sewage purification is achieved, and meanwhile, the adsorption effect of the harmful components can be further improved by matching with aluminum-magnesium silicate coated hydroxyapatite, hydroxypropyl methyl cellulose and chitosan; meanwhile, bonding with the modified graphene oxide is beneficial to agglomeration and flocculation of substances, so that the flocculation capacity is improved, and floc separation is facilitated.

The invention discloses a sewage surface foam and scum treatment device and method. The sewage surface foam and scum treatment device comprises a pretreatment tank and an oxidation treatment tank, the pretreatment tank comprises a sewage area and a filter area, a water outlet is formed in the partition plate, an inclined scum discharge pipe with the upper end penetrating through the sewage area to be communicated with the outside is arranged at the water outlet, and the bottom of the scum discharge pipe is of a filter plate structure; the filtering area is communicated with the oxidation treatment tank; a foam scum discharging device is arranged at the upper end of the scum discharging pipe and comprises a driving rotary drum, a plurality of scraping plates are arranged on the outer surface of the driving rotary drum in the circumferential direction, the ends of the scraping plates are of an L-hook-shaped structure, a discharging groove is formed in the outer wall, beside the scraping plates, of the driving rotary drum, and the bottom face of the discharging groove is obliquely arranged; and the driving drum can rotate to drive the scraper to move to the outlet of the scum discharge pipe to remove foam scum. The water outlet structure of the pretreatment tank is improved, and meanwhile, the foam and scum discharging device with an improved structure is arranged, so that collection and defoaming treatment of foam and scum can be realized during scraping.

The invention belongs to the technical field of lithium ion batteries, and relates to a cyano electrolyte additive, an electrolyte and a lithium ion battery. The cyano electrolyte additive comprises a nitrile additive and a functional additive; the structural formula of the functional additive is shown in the specification. The nitrile additive and the functional additive are compounded, the functional additive has a cyano group and a triazine ring, the triazine ring is chelated with transition metal ions and cooperates with the cyano group to form a film, and a benzene ring rigid structure can enhance the thermal stability. The nitrile additive and the functional additive have a cyano complementation effect, three phenyl groups in the functional additive are connected with a triazine ring, so that the functional additive has a larger structure and steric hindrance and cannot be completely complexed with transition metal ions on the surface of the positive electrode, and the short-chain nitrile additive has a smaller structure and can make up the space of the functional additive; and the two synergistically form a complementary effect to form a compact interfacial film on the surface of the positive electrode so as to improve the high-temperature performance.

The application discloses a preparation method of single-atom modified porous carbon material and application of the single-atom modified porous carbon material in lithium-sulfur batteries. The preparation method comprises the following steps: preparing zinc-based metal organic framework material Zn-MOF nanoparticles; coating phenolic resin (RF) on surfaces of the Zn-MOF nanoparticles to obtain Zn-MOF-RF nanoparticles; adsorbing X metal salt on the Zn-MOF-RF nanoparticles by using a solution immersion method; and obtaining X single-atom loaded hollow nitrogen-doped porous carbon (X-N / HNPC) composite material by high-temperature carbonization under an inert atmosphere. The composite material has a large specific surface area and rich pore size structure, and as a positive electrode material, can not only improve the utilization rate of active material sulfur, but also effectively adsorb polysulfides by high catalytic active sites, improve redox reaction kinetics, and further inhibit the shuttle effect of polysulfides. Based on the lithiumophilicity of metal single atoms, as a lithium negative electrode carrier, the lithium uniform deposition can be regulated, the growth of lithium dendrites can be relieved, and the stability of the battery can be improved.

The invention provides a method for preparing a Schottky-type photocatalyst, which relates to the technical field of photocatalysis, and comprises the following steps: S1: acidifying, stripping and reorganizing layered KTiNbO5 in sequence to obtain H+-recombined HTiNbO5 nanosheets (HTiNbO5-Ns); S2: washing and drying the H+-recombined HTiNbO5 nanosheets (HTiNbO5-Ns); the invention uses KTiNbO5 as a raw material and undergoes three processes of acidification, stripping and reorganization to obtain H+-recombined HTiNbO5 nanosheets (HTiNbO5-Ns). + ‑Recombinant HTiNbO5 nanosheets (HTiNbO5‑Ns) have a larger surface area and porous structure. Ti3C2MXene is obtained by completely etching the Al layer in Ti3AlC2. A nanosheet Schottky heterojunction is constructed by combining it with a few-layer HTiNbO5 nanosheets using a simple hydrothermal method. The raw materials for the preparation are common and easily available, the process flow is simple, and the operation is convenient.