21 results about "Zinc nanoparticles" patented technology

This invention belongs to the field of nanopesticides, and specifically relates to the preparation of suspensions and dispersions of pesticide varieties that are insoluble in water and solvents, with particle sizes smaller than 100 nanometers, especially smaller than 50 nanometers. The thiamethoxam zinc nanoparticle suspension and dispersion described in this invention is formed by diluting and mixing two or three components with water.

The application discloses a zinc battery negative electrode material, a preparation method thereof and a zinc ion battery. The zinc battery negative electrode material is a composite of a carbon base material and zinc nanoparticles; the carbon base material is a porous carbon material with through nano or sub-micron channels, the zinc nanoparticles are distributed in the channels of the carbon base material, the surface of the zinc nanoparticles is wrapped by a carbon network, and the carbon network anchors the zinc nanoparticles in the channels of the carbon base material. A pulse mode is adopted to alternately introduce zinc sources and carbon sources, and interval purging is performed after each introduction; in view of the unique physical and chemical characteristics of zinc, a synergistic process of "functional group guidance-pulse deposition-immediate anchoring" is designed, so that the deposition of zinc nanoparticles and the growth of the carbon network are alternately performed. The zinc battery negative electrode material can not only inhibit the growth of zinc particles in a long-term electrochemical cycle process, improve the utilization rate of zinc, but also reduce the direct contact area of zinc and electrolyte, and is helpful to inhibit the occurrence of side reactions such as hydrogen evolution.

The present invention provides a lubricant additive composition for reducing a friction coefficient and improving wear resistance, and more specifically, the lubricant additive composition is characterized by containing an emulsion solution in which silicon nanoparticles, zinc nanoparticles, and cerium nanoparticles are dispersed. As described above, the lubricating oil additive containing the emulsion solution in which the silicon, zinc, and cerium nanoparticles are dispersed reduces the friction coefficient of the lubricating oil, thereby improving fuel efficiency, reducing exhaust gas, and improving the lifespan of a vehicle.

This invention discloses a zinc battery anode material, its preparation method, and a zinc-ion battery. The zinc battery anode material is a composite of a carbon substrate and zinc nanoparticles. The carbon substrate is a porous carbon material with through-hole nano- or submicron pores. The zinc nanoparticles are distributed within the pores of the carbon substrate, and their surfaces are encapsulated by a carbon network, which anchors the zinc nanoparticles within the pores of the carbon substrate. A synergistic process of "functional group guidance—pulse deposition—instant anchoring" is designed, taking into account the unique physicochemical characteristics of zinc, to achieve alternating deposition of zinc nanoparticles and growth of the carbon network. This zinc battery anode material not only inhibits zinc particle growth and improves zinc utilization during long-term electrochemical cycling, but also reduces the direct contact area between zinc and the electrolyte, helping to suppress side reactions such as hydrogen evolution.

This invention belongs to the field of environmental engineering and electrocatalyst technology, and discloses a highly efficient catalyst for the electrocatalytic co-reduction of carbon dioxide and nitrate to urea, its preparation method, and its application. The catalyst is a Zn / MoO₂ catalyst. x -CNT composite catalyst, composed of carbon nanotubes supported on molybdenum oxide and zinc nanostructures supported on carbon paper, possesses the properties of Zn and MoO. x Heterogeneous interfaces, in which MoO x The catalyst is composed of molybdenum oxide, zinc nanoparticles, and carbon nanotubes as a support providing conductivity and structural stability. This invention constructs a heterojunction system and employs an electrochemical wet process to create a catalyst with numerous heterojunction interfaces. Through interfacial effects, it enhances electron transfer, regulation, and surface adsorption, effectively improving the efficiency and yield of the co-reduction of carbon dioxide and nitrate to urea. The preparation method is simple, easy to synthesize, uses inexpensive and readily available raw materials, and is easily scaled up, showing promising application prospects.

The application discloses a self-powered electroactive dressing with a wound repair function and a preparation method and application thereof, and belongs to the technical field of medical devices. The electroactive dressing comprises a zinc-molybdenum primary battery structure and three layers of functionalized nanofiber scaffolds. The scaffold takes gelatin-polycaprolactone as a fiber matrix, sequentially loads zinc nanoparticles, icariin and molybdenum nanoparticles to form a functional layer, and is prepared through EDC / NHS cross-linking modification. The electroactive dressing has good mechanical properties and biocompatibility, can be minimally invasively implanted in a wound site, spontaneously generates a continuous and stable microelectric field through the zinc-molybdenum primary battery, and cooperatively realizes gradient-controlled release of icariin from burst release to sustained release, so that the effects of promoting fibroblast proliferation and migration and promoting rapid wound healing are achieved. The dressing has the advantages of simple preparation process, low cost, active regulation of a wound microenvironment, mild and controllable degradation, safety, no toxic side effects, and a very good application prospect.

The application discloses an ultrastable antibioadhesion coating and a preparation method and application thereof, and belongs to the technical field of functional materials. The coating provided by the application comprises an A component and a B component; the A component comprises nanoparticles, carboxyl silicone oil, a silane coupling agent and a solvent; the B component comprises a base material and a solvent; the nanoparticles comprise at least one of silicon nanoparticles, iron nanoparticles or zinc nanoparticles; and the base material comprises an epoxy resin. The carboxyl silicone oil and the functionalized nanoparticles are combined through cooperation of the A component and the B component and are embedded in the base material, so that the prepared coating can be used for preparing the ultrastable antibioadhesion coating, the stability and durability of the coating are good, and the coating can effectively reduce adhesion of blood components, proteins, bacteria and cells and the like, and the coating and the prepared coating have good application prospects in implantable medical devices.

The invention discloses an ion-electron mixed conductor coated silicon-carbon composite material for a solid-state battery, and relates to the technical field of lithium battery material preparation. The silicon-carbon composite material is prepared from the following materials in parts: 10 to 500 parts of silicon, 10 to 600 parts of carbon, 1 to 450 parts of a carbon-based material, 10 to 300 parts of a conductive polymer, 100 to 300 parts of metal magnesium powder, 100 to 400 parts of nano zinc powder, 1 to 120 parts of lithium silicate and 1 to 200 parts of an organic lithium compound. Through cooperation of the metal magnesium powder and the conductive polymer, the volume expansion rate is controlled to be 50% or below, and it is guaranteed that the electrode structure is stable; carbon, a carbon-based material and nano zinc powder construct an electron conduction network, lithium silicate and an organic lithium compound form an ion conduction channel, the problem of multi-component compatibility is solved through reasonable matching and process, high-activity lithium is replaced with low-activity metal, the preparation safety is improved, raw materials are industrial conventional materials, the process is mature, performance and cost are considered, and industrialization requirements are met.

The application discloses a kind of detection of livestock and poultry breeding butyric acid malodorous gas sensor design method and application, comprising: carbon ball is mixed with deionized water and ultrasonic, then add zinc acetate dihydrate to obtain carbon ball mixture, then carbon ball mixture is placed in the stainless steel reaction kettle lined with polytetrafluoroethylene and placed in oven to obtain mixture C; supernatant is removed, mixture D is obtained, centrifugal washing and drying, placed in muffle furnace and calcined, to obtain zinc oxide nanospheres;Zinc oxide nanospheres are placed in muffle furnace and calcined under 4.8% hydrogen argon mixed atmosphere to obtain zinc oxide nanospheres loaded with zinc nanoparticles, the prepared zinc oxide nanospheres loaded with zinc nanoparticles are dispersed in ethanol, then drop-coated on flat plate electrode using a pipette gun, dried, and finally welded on the sensor using a precision electric welder, for detection of livestock and poultry breeding butyric acid malodorous gas, response is rapid and sensitivity is high.

The invention relates to the technical field of anti-corrosion coatings, in particular to a high-solid-content graphene zinc water-based heavy anti-corrosion coating and application thereof.The anti-corrosion coating is prepared from, by weight, 35-40 parts of water-based epoxy resin, 15-20 parts of modified graphene, 7-11 parts of functional auxiliaries, 20-25 parts of deionized water, 3-5 parts of modified additives and 5-8 parts of nano zinc powder. According to an ultra-long-acting anti-corrosion performance synergistic protection mechanism, the unique two-dimensional lamellar structure of the graphene and the nano zinc powder form a dual protection system of physical shielding and electrochemical protection, and the toughness of the coating is enhanced through the synergistic effect of the modified graphene, the calcium sulfate whiskers, the carbon nanotubes and other fillers; the modified graphene prepared by a ball milling process is uniformly dispersed in the resin to form a flexible network structure which can absorb impact energy.

The invention discloses a nano composite zincizing ball-milling agent and application thereof. The zincizing agent contains 80%-95% of nano zinc powder, 2%-10% of an activating agent, 1%-8% of a diffusion accelerant and 0.5%-5% of an anti-binding agent, wherein the particle size of the nano zinc powder is 50-100 nm, and the purity of the nano zinc powder is larger than 99.9%. During application, through mechanical activation and 300-420 DEG C low-temperature thermal diffusion coupling, zinc atoms and an iron matrix form a metallurgically bonded zinc-iron alloy layer. According to the technology, the defects of an existing process are overcome, the coating is uniform and compact, the binding force is high, red rust and hydrogen embrittlement do not exist in a neutral salt spray test for more than or equal to 1000 hours, energy is saved, environment friendliness is achieved, the applicability is wide, long-acting anti-corrosion protection can be provided for materials such as high-strength steel, and green and high-end upgrading of the surface treatment industry is promoted.

The invention discloses a nano iron-zinc composite dispersing agent, a preparation method thereof and application of the nano iron-zinc composite dispersing agent in relieving aluminum toxicity of soybeans in acid soil, and belongs to the technical field of agricultural soil improvement and fertilizer. According to the dispersing agent, soil active aluminum ions are passivated through the synergistic effect of iron and zinc nano-particles, and the adsorption and fixation capacity is enhanced through the high specific surface area of the nano-particles; the dispersion stability is improved by the organic silicon surfactant, the colloid stability is improved by the sodium alginate, and the uniform distribution is ensured by the deionized water; stable dispersion is achieved through step-by-step mixing and ultrasonic treatment, a stable dispersion medium is formed firstly, then iron-zinc nanoparticles are added for secondary ultrasonic treatment, and a high-dispersion-stability composite system is obtained. The dispersant is applied to fertilizer preparation, can solve the problem of soybean aluminum stress in acid soil, realizes synchronization of soil improvement and nutrient supply, simplifies the application process, reduces the operation cost, is environment-friendly and convenient to operate, and overcomes various defects of a traditional modifier.

The invention discloses an automatic nano zinc powder screening device and method, and relates to the field of nano zinc powder screening. The automatic nano zinc powder screening device comprises a machine body and a cage frame arranged in the machine body, a screen is arranged on the cage frame, a feeding port is formed in the top of the machine body, and a feeding shaft is arranged in the machine body; the feeding shaft is provided with a spiral blade located in the feeding port and a plurality of sets of wind wheel blades located in the cage frame, and a plurality of sets of auxiliary mechanisms are arranged outside the feeding shaft at intervals. The auxiliary mechanism comprises a sealing cylinder, and the inner side face of the sealing cylinder is connected with a sealing piston in a sliding mode. According to the automatic screening device and method for the nano zinc powder, through mutual cooperation of a sealing cylinder, a sealing piston, a striking rod, a striking ring, a vibrating spring and a power mechanism, the zinc powder can be synchronously vibrated in the screening process, so that the agglomerated zinc powder can be crushed, meanwhile, the speed of the zinc powder penetrating through the surface of a screen can be increased, and the screening efficiency of the zinc powder is improved. And the screening efficiency of the zinc powder is effectively improved.

The utility model relates to a nanoparticle-based dietary nutrient mix for aquaculture feed use. The nutrient mix comprises 20–50% by weight iron nanoparticles, 20– 40% by weight zinc nanoparticles, 10–35% by weight selenium nanoparticles, and 5–20% by weight copper nanoparticles. The nanoparticles are combined in powdered form to create a multi-element nanoparticle-based dietary nutrient mix suitable for incorporation into aquaculture feeds. When added to feed formulations, the nutrient mix may enhance nutrient delivery and support improved nutritional supplementation resulting to improved growth and feed conversion efficiency in fish.

The invention relates to the technical field of batteries, and discloses a modified positive electrode material and a preparation method and application thereof.The preparation method comprises the following steps that 1, a sodium source, a nickel source, an iron source and a manganese source are subjected to first mixing and then sintered, and a first intermediate product is obtained; (2) carrying out second mixing on the first intermediate product and nano zinc powder, and annealing to obtain a second intermediate product; and (3) carrying out third mixing on the second intermediate product and an organic carbon source solution, and then sequentially carrying out hydrothermal reaction and carbonization to obtain the modified positive electrode material. The preparation method comprises the following steps: mixing a material containing nickel, iron and manganese elements with nano zinc powder, annealing to form nano zinc metal net-shaped doping, and then carrying out hydrothermal reaction and carbonization process on the nano zinc metal net-shaped doping and an organic carbon source solution to obtain the modified positive electrode material with the inner net-shaped doping and the surface coated with a graphitized carbon layer. And the conductivity, the structural stability and the interface compatibility of the sodium electric material are improved, so that the comprehensive electrochemical performance of the battery is improved.

This application discloses a conductive anti-corrosion treatment process for the weld surface of an automotive shock absorber. The process includes: preparing an aqueous conductive nanocomposite slurry containing surface-modified multi-walled carbon nanotubes and nano-zinc powder; spraying the slurry onto the weld area of ​​the shock absorber and flash-drying it at a low temperature to form a conductive transition substrate; electrostatically spraying the shock absorber with the transition substrate, allowing paint to adhere to the surface of the transition substrate; and baking the painted shock absorber at a high temperature to co-cur the transition substrate and the paint, forming an integrated protective coating structure. This application, by constructing a conductive transition substrate, solves the technical defect of traditional insulating sealants that prevent paint from being sprayed onto the weld, ensuring the integrity of the anti-corrosion coating, and utilizing the nanocomposite structure to improve the corrosion resistance and fatigue life of the weld area.

The invention relates to an intelligent control system for adding graphene zinc into a coolant. By designing an intelligent control and execution system, graphene and zinc are added, so that efficient antibacterial and anticorrosive effects and heat exchange performance improvement of a primary loop channel of a reactor are realized. Firstly, the system has the function of adding graphene zinc into the coolant; secondly, an intelligent control function is achieved, and commands are transmitted to all control systems for corresponding execution according to the requirements in the reactor operation process; thirdly, graphene quantum dots are used in the system, so that the graphene zinc nanoparticles are accurately delivered in a targeted manner, and the action effect is improved; finally, the graphene zinc particles, impurities and the like in the coolant are adjusted and controlled through the biomimetic membrane. The system can be suitable for various liquid coolant nuclear energy systems, realizes coolant system upgrading in the existing nuclear power plant, plays a role in building high-efficiency small reactors in the future and the like, and can be importantly applied to many industrial fields.

The application discloses a supramolecular assembly tannic acid-zinc nanoparticle and application thereof in cosmetics. The supramolecular assembly tannic acid-zinc nanoparticle is an aggregate structure formed by tannic acid and zinc pyrrolidone carboxylate through non-covalent interaction. A preparation method of the supramolecular assembly tannic acid-zinc nanoparticle comprises the following steps: ultrasonic treatment is conducted on a mixed solution composed of tannic acid, zinc pyrrolidone carboxylate and a solvent. The supramolecular assembly tannic acid-zinc nanoparticle can effectively exert the synergistic effect of tannic acid and zinc elements, and can guarantee excellent effects such as high stability and high transdermal absorption. The supramolecular assembly tannic acid-zinc nanoparticle itself and further application thereof in cosmetics can simultaneously consider excellent anti-photoaging and oil control effects.

The application discloses a kind of porous transition metal-nitrogen-carbon catalyst and its preparation method and application, it is related to catalyst technical field, the present application is by the cyanethylation and amine oxime reaction of wood in alkaline condition, make that lignin in wood is dissolved, simultaneously part cellulose on pore wall is stripped, further produces crosslinked pore structure, to make wood can obtain integrated carbon material with interlinked pore structure after pyrolysis;And the method presented in the application is prepared, with cellulose in wood as grafting site, amidoxy group is grafted to wood precursor, provides abundant surface anchoring site for metal species, to realize the efficient loading of different kinds of metal species on wood-derived carbon.The present application gradually forms zinc oxide or zinc nanoparticles during pyrolysis process and then evaporates, this process inhibits the large-scale aggregation of target metal species, ensures the high dispersion state of target metal species.

The invention relates to the technical field of ceramic tile surface antibiosis, in particular to an antibacterial material and a preparation method thereof, and the antibacterial material comprises the following components by weight: 35-40 parts of feldspar; 5-6 parts of calcite; 15 to 20 parts of quartz; 10 to 12 parts of aluminum oxide; 7 to 9 parts of nano zinc; 8-10 parts of dolomite; 5-6 parts of strontium carbonate; 0.1 to 1 part of lanthanum oxide; 0.1 to 1 part of cerium oxide; 0.1 to 1 part of yttrium oxide; 0.1 to 1 part of rubidium oxide; four components including lanthanum oxide, cerium oxide, nano-zinc and yttrium oxide are added into an antibacterial material, so that an antibacterial effect is achieved; according to the antibacterial material, quartz and aluminum oxide are added to improve the wear resistance and acid-base resistance of the material, so that the antibacterial material with the antibacterial effect and the wear resistance and acid-base resistance is finally formed, and the situation that the appearance of a ceramic tile product is affected due to the fact that silver ions added into a traditional glaze layer are decomposed and discolored when heated is avoided; the antibacterial material is applied to a glaze layer on the surface of a ceramic tile to form the antibacterial ceramic tile, the distribution is more uniform, the cost is greatly reduced, and the antibacterial ceramic tile has better market competitiveness.

The application relates to a chromium-manganese co-doped gallium germanate zinc long-afterglow nanoparticle and a preparation method thereof. Based on low saturated vapor pressure under high-vacuum heat treatment conditions, a chromium-doped gallium germanate zinc nanoparticle mixture with manganese dioxide powder is heat treated at a lower temperature, near-infrared afterglow emission performance of the nanoparticle is improved, and nanoparticle aggregation is avoided. Meanwhile, Mn 4+ in the manganese dioxide is reduced into Mn 2+ in the nanoparticle interior in a weak reduction vacuum environment and a cation diffusion process, chromium-manganese co-doped gallium germanate zinc long-afterglow nanoparticles are obtained, the nanoparticles have near-infrared afterglow emission originating from Cr 3+ and green long-afterglow emission originating from Mn 2+ . After ultraviolet light excitation, based on energy transfer from Mn 2+ ions to Cr 3+ ions, utilization efficiency of anti-site traps far from Cr 3+ ions in the afterglow light emission process is improved, and near-infrared afterglow emission is further enhanced. The nanoparticles have an average particle size of less than 60 nm and can be used for in-vivo biological application research.