643 results about "Chemical adsorption" patented technology

The invention discloses a zinc-iodine battery positive electrode material based on corn straw shell derived porous carbon and a preparation method of the zinc-iodine battery positive electrode material. According to the material, corn straw shells serve as the sole carbon source, an indigenous nitrogen-doped biomass charcoal carrier with a hierarchical pore structure is prepared through pre-carbonization and KOH activation processes, and the material is characterized in that the specific surface area is larger than or equal to 1500 m < 2 > / g, and the micropore proportion is larger than 90%. The iodine is loaded on the carrier (the iodine content is greater than or equal to 45wt%) through a vacuum sublimation method to form the indigenous nitrogen-doped biomass charcoal / iodine composite material. According to the positive electrode material, through the synergistic effect of physical confinement and pyridine nitrogen chemical adsorption, the multi-iodide shuttle effect is effectively inhibited, so that the capacity retention rate of the zinc-iodine battery is greater than or equal to 93% after 40000 cycles under the current density of 2A g <-1 >, and the capacity retention rate is greater than 45% under the rate of 10A / g. The method has double benefits of agricultural waste resource utilization and high-performance energy storage device development.

The invention discloses a method for coating fluorescent powder with aluminum oxide through plasma-assisted atomic layer deposition, which comprises the following steps of: building an atomic layer deposition system, and placing a base station in a vacuum chamber of the atomic layer deposition system; fluorescent powder is placed on a base station, a vibration motor is turned on, and then the fluorescent powder is pretreated, including degassing treatment and oxygen plasma pretreatment; sequentially and alternately introducing two precursors into a vacuum chamber of the atomic layer deposition system, so that the two precursors are chemically adsorbed on the surface of the fluorescent powder and react to generate an aluminum oxide film; and after each precursor is introduced and reacts, the vacuum chamber needs to be cleaned by inert gas. According to the method, high-precision monoatomic-layer-level film control is achieved through the plasma-assisted atomic layer deposition technology, the defect that powder is prone to agglomeration in deposition is overcome through the vibration type fluidized bed technology, and therefore a high-quality aluminum oxide protection layer can be formed on the surface of the fluorescent powder; the water resistance and the luminescence property of the fluorescent powder are obviously improved.

The invention belongs to the technical field of gel materials, and particularly relates to a high-performance water-swelling acrylic acid-based material and a preparation method thereof. Comprising the following steps: (1) modifying graphene by adopting a silane coupling agent containing unsaturated double bonds to prepare a modified graphene dispersion liquid; (2) sequentially adding acrylic acid, an acrylamide monomer and a cross-linking agent into the modified graphene dispersion liquid, then adding an initiator, and reacting to obtain a gel mixed solution; and (3) freeze-drying the gel mixed solution to obtain the high-performance water-swelling acrylic acid-based material. The gel material is uniform in pore structure and high in mechanical strength. Physical adsorption can be carried out by taking Van der Waals force or electrostatic attraction force as adsorption driving force through a pore structure, and chemical adsorption can also be carried out by taking chemical bond force or hydrogen bond interaction as adsorption driving force through functional groups on the graphene and the acrylic polymer, so that organic pollutants such as cationic dyes and the like can be effectively and quickly removed.

The invention discloses phenolic resin polymer spheres as well as a preparation method and application thereof, and belongs to the technical field of heavy metal adsorption in sewage treatment. According to the phenolic resin polymer sphere provided by the invention, the phenolic resin polymer sphere with specific morphology is obtained by improving the synthesis method of the phenolic resin polymer sphere. The adsorption site activity of the phenolic resin polymer sphere can be regulated and controlled in an illumination activation mode, the adsorption capacity and the adsorption efficiency on chromium are remarkably improved by promoting chemical adsorption, and the adsorption capacity and the adsorption efficiency are far higher than those of other chromium adsorbents reported in current literatures; the chromium adsorption capacity is far higher than that of a chromium adsorbent in light condition research. And meanwhile, chemical adsorption under illumination activation can improve the reduction capacity on hexavalent chromium and reduce the toxicity of hexavalent chromium. Moreover, the reduced trivalent chromium is directly adsorbed on the surfaces of the phenolic resin polymer spheres, so that the trivalent chromium does not need to be removed by a precipitation method, and the treatment process of the chromium-containing wastewater is saved.

The invention relates to the technical field of mathematical modeling, in particular to a mathematical model modeling method based on data analysis operation processing. The method comprises the following steps: collecting metal pollution data of a target water area by using a multi-parameter water quality sensor array; performing time sequence alignment on the metal pollution data to generate a standardized pollution data set; constructing a metal migration model based on fluid dynamics and chemical adsorption coupling; inputting the standardized pollution data set into the metal migration model for three-dimensional space interpolation calculation, and generating a metal pollutant diffusion cloud picture; pollution source reverse analysis is carried out on the metal pollutant diffusion cloud picture, and a potential pollution source coordinate set and pollution contribution degree sorting are generated. According to the method, by integrating multi-parameter water quality sensor data, fluid dynamics and chemical models and multispectral analysis, the modeling precision of the water pollution diffusion mathematical model is improved.

The invention discloses application of a magnetic nano composite material as an adsorbent in removal of organic dye in water, and belongs to the technical field of application of composite materials, the magnetic nano composite material (one of Fe3O4-coated TAPT-OMePDA or Fe3O4-coated TAPT-TFPDA) as the adsorbent adsorbs the organic dye in water, the adsorption capacity of Congo red (CR) reaches up to 1603.54 mg / g and 1968.83 mg / g, and the adsorption capacity of the magnetic nano composite material (one of Fe3O4-coated TAPT-OMePDA or Fe3O4-coated TAPT-TFPDA) as the adsorbent adsorbs the organic dye in water. The adsorption of the two adsorbents to the CR accords with a quasi-secondary kinetic model and a Langmuir isotherm model, and belongs to single-layer chemical adsorption. Compared with an adsorbent in the prior art, the Fe3O4 (at) TAPT-OMePDA and the Fe3O4 (at) TAPT-TFPDA have the advantages that the porosity is high, the adsorption efficiency is high, the selectivity is good, and the repeated utilization rate is good.

The invention relates to a preparation method of a normal-temperature normal-pressure efficient gas adsorption composite material. The method comprises the following steps: firstly, pretreating activated carbon to obtain surface-OH modified mesoporous activated carbon; then modifying the surface-OH modified mesoporous activated carbon with the ZIF-8 material to obtain ZIF-8 (at) OH-AC; and finally, performing surface hydrophobization modification to obtain the adsorption material. Wherein in the modification process, ZIF-8 is firmly loaded and uniformly distributed on the surface of hydroxyl-modified mesoporous activated carbon by adopting an in-situ growth technology, the interface bonding force is enhanced, the loading capacity of the activated carbon on the MOFs material is improved, and by utilizing the chemical adsorption effect of ZIF-8 Zn < 2 + > and methane and the high porosity of the mesoporous activated carbon, the MOFs material can be prepared. The adsorption capacity of the composite material to methane is greatly improved, meanwhile, the moisture resistance of the composite material is effectively improved, the composite material can still keep stable and efficient adsorption performance in a high-humidity environment, and the problem that an existing material is prone to inactivation in a humid environment is solved.

The invention is applicable to the technical field of carbon nanotube materials, and provides a cobalt-selenium co-doped carbon nanotube and a preparation method and application thereof, and the preparation method comprises the following steps: adding cobalt nitrate hexahydrate and a carbon nanotube into a methanol solution to obtain a solution A; dissolving 2-methylimidazole in a methanol solution to obtain a solution B; mixing the solution A and the solution B to form a purple precipitate, separating and washing the purple precipitate, and performing vacuum drying to obtain a ZIF-67 (at) CNT precursor; and putting the ZIF-67 (at) CNT precursor and selenium powder into a tubular furnace, raising the furnace temperature and preserving heat under argon flow, and then cooling to room temperature to obtain the Co-CoSe (at) CNT. According to the invention, a diatomic cobalt (Co) and selenium (Se) co-doped carbon nanotube (CNT) material is adopted as a main body material of sulfur, through a synergistic effect, the chemical adsorption capacity of the electrode material is remarkably enhanced, polysulfide is effectively captured, and excellent physical barrier performance is provided, so that the shuttle effect is further inhibited, and the long cycle life of the lithium-sulfur battery is prolonged.

The invention relates to the technical field of surface engineering, discloses a method and a system for preparing a yttrium fluoride composite ceramic coating through atmospheric plasma spraying, and aims to solve the problems that the yttrium fluoride coating generates a brittle aluminum fluoride layer on the surface of an aluminum substrate due to fluorine ion diffusion, so that the bonding strength is low, and the yttrium fluoride coating is easy to peel off and lose efficacy. The method comprises the following steps: sequentially carrying out mechanical polishing, ultrasonic cleaning and sand blasting roughening on an aluminum base material; preparing composite powder formed by mixing yttrium fluoride, yttrium oxide and nanometer aluminum oxide according to the mass ratio of 75: 20: 5; sequentially depositing a yttrium oxide transition layer, a composite barrier layer and a yttrium fluoride functional layer by adopting atmospheric plasma spraying; and finally carrying out vacuum post-heat treatment. According to the system, through the synergistic effect of the three layers of gradient structures, the transition layer forms an yttrium aluminate metallurgical bonding interface, the barrier layer inhibits fluorine ion diffusion through the dual mechanisms of nanometer aluminum oxide physical barrier and yttrium oxide chemical adsorption, and the functional layer guarantees the plasma erosion resistance. According to the method, the bonding strength of the coating is remarkably improved to 50 MPa or above, the porosity is lower than 3%, stripping is avoided under 500-hour high-energy plasma bombardment, the process cost is reduced by 40%, and the method is suitable for cavity protection of semiconductor etching equipment.

The invention discloses a three-dimensional multi-interface heterostructure lithium-sulfur battery interlayer, a preparation method thereof and a lithium-sulfur battery, and the preparation method comprises the following steps: placing acidified carbon cloth in a mixed solution of cobalt nitrate, nickel nitrate and hexamethylenetetramine for primary hydrothermal reaction to prepare NiCo2O4 (at) CC; the NiCo2O4 (at) CC is placed in a mixed solution of nickel chloride and sodium molybdate, a secondary hydrothermal reaction is carried out, and NiMoO4 (at) NiCo2O4 (at) CC is obtained; according to the preparation method, NiMoO4-coated NiCo2O4-coated CC is subjected to thermal reduction annealing in a mixed atmosphere of hydrogen and argon, the three-dimensional multi-interface heterostructure lithium-sulfur battery interlayer is prepared, active sites of the three-dimensional heterostructure are increased, the oxidation-reduction reaction efficiency under high sulfur loading capacity is improved, the nano-particle anchored amorphous nanosheets form the multi-interface heterostructure, and the performance of the lithium-sulfur battery is improved. Good chemical adsorptivity and catalytic conversion on polysulfide in the battery are realized, and the cycle life of the battery is prolonged.

The invention discloses a high-salt-corrosion-resistant concrete pouring material and a preparation method thereof, and relates to the technical field of high-salt-corrosion-resistant concrete, and the high-salt-corrosion-resistant concrete pouring material comprises the following components in parts by weight: 5-10 parts of modified charcoal, 1.5-3 parts of a corrosion inhibitor, 320-360 parts of cement, 650-700 parts of river sand, 20-30 parts of silica fume, 0.3-0.6 part of super absorbent resin, and 0.2-0.8 part of a water reducing agent. According to the high-salt-corrosion-resistant concrete pouring material and the preparation method thereof, a protective film is formed on the surface of a reinforcing steel bar through the corrosion inhibitor, the anodic oxidation reaction is inhibited, the reinforcing steel bar is prevented from being corroded, eugenol releases corrosion inhibition molecules, a hydrophobic protective film is formed on the surface of the reinforcing steel bar, and electrochemical corrosion is inhibited; meanwhile, through the synergistic effect of a physical barrier and chemical passivation, the calcium-aluminum salt-eugenol composite corrosion inhibitor not only can block a corrosion path through physical film formation, but also can inhibit electrochemical reaction through chemical adsorption, so that the corrosion inhibition efficiency is improved.

The utility model relates to the technical field of enhanced pretreatment devices for organic wastewater, in particular to an enhanced pretreatment combined device for refractory high-toxicity organic wastewater in a chemical industry park. Comprising a toxic organic wastewater oxidation reaction device, a toxic organic wastewater adsorption device, a toxic organic wastewater efficient precipitation device, an automatic ozone generator system, an automatic hydrogen peroxide dosing system and an automatic sodium hydroxide dosing system which are sequentially connected, the system comprises a toxic organic wastewater lifting system, an active agent adding system, an odor treatment system, a biochemical treatment system and a sludge treatment system. According to the method, at the front end of biochemical treatment, refractory or high-toxicity wastewater in a chemical industry park is pretreated, and the purposes of improving the biodegradability of the wastewater, reducing the toxicity of the wastewater under the combined action of physical and chemical adsorption and biological adsorption and ensuring the stability of a subsequent biochemical system are achieved through the enhanced pretreatment combined action of oxidation, adsorption, coagulating sedimentation and the like.

The invention provides a method for preparing and applying a rare earth nickelate electronic phase change oxide curved surface coated composite material, which has the main conception that rare earth nickelate and a core material are designed in combination with an application scene, nucleation is carried out on the surface of the curved surface core material by utilizing the chemical adsorption effect of the rare earth nickelate, and a polycrystalline coating layer is grown; therefore, the coupling application of the electronic phase change characteristic of the rare earth nickelate and the function of the core material is realized. The method has the advantages that the rare earth nickelate can be adsorbed and wrapped on the surface of the core material with the micron-sized curvature radius, and a complex device can be designed according to an application scene in combination with electronic phase change characteristics. The metal-insulator conversion characteristic of the prepared composite material and the functional characteristic of the core material can realize multi-dimensional functional response under the regulation and control of external field design, and the composite material can be applied to the aspects of intelligent electromagnetic shielding, optical design and infrared camouflage, optical anti-counterfeiting, external field sensitive resistance, logic electronic devices and catalysis.

The invention provides conductive carbon paste as well as a preparation method and application thereof, and belongs to the technical field of conductive materials. The carbon black, the graphene and the carbon nanotubes are utilized to form a self-supported three-dimensional conductive network, so that the graphene / carbon nanotube composite material has excellent conductivity. In addition, both the graphene and the carbon nanotubes have excellent mechanical properties, flexibility and chemical stability, so that the mechanical stability of a conductive layer after the conductive carbon paste is cured can be improved. And the high-temperature-resistant binder can improve the stability of the conductive layer after the conductive carbon paste is cured. The flexibility reinforcing agent can improve the flexibility of the conductive carbon paste. The silane coupling agent can play a bridge role between the carbon material and the high-temperature-resistant binder, so that the interface affinity between the carbon nanomaterial and the high-temperature-resistant binder is enhanced; the silane coupling agent effectively inhibits agglomeration of the graphene and the carbon nanotubes in a chemical adsorption or physical coating mode. The result of the embodiment shows that the conductive layer formed by curing the conductive carbon paste provided by the invention has excellent conductive stability and mechanical stability.

The invention belongs to the technical field of mineral flotation, and particularly discloses a method for recovering whole-fraction iron lepidolite through combination of multi-stage magnetic separation and synergistic flotation. Comprising a matched compound collecting agent which is composed of sodium dodecenesulfonate, amino acid methyl thiohydracrylate, an amphoteric polyacrylamide polymer, carboxyethylidene diphosphonic acid and polyethylene glycol, and efficient recovery of whole-size-fraction iron lepidolite is achieved by matching with a corresponding magnetic separation-flotation combined process. The compound collecting agent generates static electricity and physical and chemical adsorption on the iron lepidolite through specific groups such as sulfonic acid groups, carboxyl groups, amino groups, acylamino groups and phosphate groups, exerts excellent selectivity and collecting functions, generates a dispersion effect and a chelating flocculation effect on micro-fine-particle iron lepidolite, and well cooperates with multi-stage magnetic separation to recover whole-particle-size iron lepidolite, so that the recovery rate of the whole-particle-size iron lepidolite is increased, and the recovery rate of the whole-particle-size iron lepidolite is increased. And the existing combined beneficiation process of the iron lepidolite is optimized, the cost and the environmental influence are reduced, and technical support is provided for sustainable development of lithium resources.

The invention discloses a metal organic framework adsorption material and a preparation method and application thereof, and relates to the technical field of chemical adsorption material preparation, the metal organic framework adsorption material comprises the following raw materials: ZrCl4, 2-aminoterephthalic acid, imidazole, chloramine salt, plant essential oil, a pore-forming agent and the like. The invention also discloses a preparation method which comprises the following steps: dissolving ZrCl4, 2-aminoterephthalic acid and hydrochloric acid in N, N-dimethylformamide; the reaction liquid, dichloroalkane and xylene are mixed, and UIO66-Cl is obtained; the preparation method comprises the following steps: putting UIO66-Cl and aminoimidazole into xylene; reacting with glycidyl methacrylate; and sequentially adding the reaction product, plant essential oil, a pore-forming agent and the like into absolute ethyl alcohol, and reacting to obtain the metal organic framework adsorbing material. The adsorption material provided by the invention has selectivity on plant essential oil mainly containing alcohol and ketone chemical substances and is high in adsorption capacity.

The invention discloses a microporous metal organic framework material, a preparation method and a rare gas separation method, and belongs to the technical field of chemical adsorption separation, the microporous metal organic framework material is constructed by coordination of divalent metal ions, heterocyclic dicarboxylic acid ligands and nitrogen-containing heterocyclic ligands; divalent metal ions and heterocyclic dicarboxylic acid ligands are coordinated to form a two-dimensional polymer, and nitrogen-containing heterocyclic ligands serve as pillared bodies and are coordinated with the two-dimensional polymer to form a three-dimensional frame structure. A microporous metal organic framework material is used as an adsorbent and is in contact with a rare gas mixture, so that high-polarity rare gas is recognized and captured, and separation and purification of the rare gas are achieved. According to the invention, by changing different ligands and functional group substituents thereof, precise regulation and control of a pore chemical electrostatic environment are realized, so that selective separation of rare gases such as xenon / krypton, helium / neon and the like is realized.

The invention provides an aqueous zinc ion electrolyte additive containing maltitol and application thereof, belonging to the technical field of aqueous batteries. The additive is maltitol. In the process of zinc deposition, maltitol molecules can be preferentially attached to the surface of a zinc metal anode through chemical adsorption, reducing the direct contact between free water and the zinc metal surface, thereby reducing the hydrogen evolution reaction between free water and the zinc metal surface, and inhibiting the generation of byproduct sulfate. In addition, a zinc ion battery containing maltitol can generate a larger nucleation overpotential, which can promote the formation of a finer grain zinc deposition layer, and also lead to an increase in nucleation sites and a decrease in nucleation speed, thereby inhibiting the growth of zinc dendrites, which helps the uniform deposition of zinc ions on the surface of the zinc metal anode.

According to the cobalt-doped molybdenum disulfide lithium-sulfur battery composite positive electrode material, the preparation method and the application, a cobalt-doped stable molybdenum disulfide defect structure composite nitrogen-doped graphene material is prepared by combining a solvothermal method and an annealing technology, and the process is mature; the method is simple, and the composite positive electrode material with high sulfur content is easy to obtain. According to the lithium-sulfur battery composite sulfur positive electrode material disclosed by the invention, the strong chemical adsorption effect and catalytic conversion effect of the cobalt-doped stable molybdenum disulfide defect structure composite nitrogen-doped graphene carrier on polar lithium polysulfide are utilized, so that the diffusion of the lithium polysulfide in an ether electrolyte is inhibited, and the electrochemical reaction kinetics is improved; therefore, the shuttling effect is slowed down, and the lithium-sulfur battery has the characteristics of high capacity and long service life.

The invention provides a method for removing micro-plastics in tail water through a benthonic animal reinforced constructed wetland, and relates to the technical field of micro-plastic removal. The artificial wetland combines physical filtration and chemical adsorption through the multi-layer design of the front and rear composite substrate layers; due to the graded filtering function of the coarse sand layer and the fine sand layer and the adsorption effect of the modified biochar layer on micro-plastic, the system can effectively capture and remove micro-plastic particles with different particle sizes; by introducing the benthonic animals with strong filtering and particle capturing capabilities, the capturing capability of the wetland system is enhanced, and the benthonic animals intake and filter micro-plastic particles, so that the content of micro-plastics is directly reduced, and the biological activity of bottom microorganisms is also promoted; the degradation effect of the microorganisms can further decompose the micro-plastics, and the bioremediation effect is achieved.

The invention discloses a sulfur positive electrode material based on an amorphous crystalline cobalt phosphide / porous carbon composite carrier and a preparation method and application of the sulfur positive electrode material, the amorphous crystalline cobalt phosphide / porous carbon composite carrier is used as a conductive carrier, and the amorphous crystalline cobalt phosphide / porous carbon composite carrier is fused and compounded with active sulfur to obtain the composite sulfur positive electrode material for a lithium-sulfur battery. According to the present invention, the hierarchical porous structure is provided, the high specific surface and the high pore volume provide the sufficient sulfur loading space, the three-dimensional carbon network structure provides the excellent electron conduction and ion diffusion ability, the chemical adsorption can be well achieved, the reversible conversion of the polysulfide can be efficiently catalyzed, and the utilization rate of the active substance can be improved; the catalytic activity can be optimized, the electro-catalytic performance of the catalyst can be improved, dissolution and diffusion of polysulfide can be physically limited, and meanwhile electrode volume expansion in the charging and discharging process is relieved; the sulfur positive electrode material is applied to a lithium-sulfur battery, can effectively inhibit dissolution and shuttling of polysulfide, and shows excellent electrochemical performance.

The invention belongs to the technical field of metal adsorption material preparation, and particularly relates to a preparation method of an attapulgite composite cellulose hydrogel material, which comprises the following steps: (1) uniformly dispersing acid modified attapulgite in water, then adding sodium alginate and polyvinyl alcohol, heating and stirring; (2) adding sodium carboxymethyl cellulose, and continuously stirring to obtain a mixed solution; and (3) injecting the mixed solution into a mold by using an injector, freeze-thawing, freeze-drying, immersing into a CaCl2 solution, cross-linking, washing for multiple times, and freeze-drying again to obtain the attapulgite composite cellulose hydrogel material. Sodium alginate, polyvinyl alcohol, sodium carboxymethyl cellulose and acid modified attapulgite in a proper proportion are matched with a multiple freeze drying method to construct a three-dimensional structure with multiple chemical adsorption, high specific surface area, long diffusion channel and abundant pores, so that the adsorption efficiency and the adsorption capacity of the composite material are improved, and various application requirements are met.

The invention provides carbon-doped boron nitride for effectively adsorbing heavy metals in flue gas and a preparation method of the carbon-doped boron nitride, and belongs to the technical field of combined control of various atmospheric pollutants. According to the carbon-doped boron nitride, more carbon atoms are introduced into a boron nitride structure through carbon doping, the carbon atoms replace part of boron atoms, and the original structure of the boron nitride is changed; compared with boron nitride, the carbon-doped boron nitride has the advantages that the atom proportion of carbon atoms in the carbon-doped boron nitride is increased by 2.92%-58.22%, heavy metals in the flue gas are removed through the synergistic effect of physical adsorption and chemical adsorption, and simultaneous adsorption of more than one heavy metal in the flue gas is realized after 5 minutes. Compared with activated carbon as a heavy metal adsorbent, the preparation method is simple, the blank of adsorption capacity in high-temperature flue gas is filled, heavy metal substances such as Cd, Pd, Zn and Cu can be adsorbed at the same time, and the adsorbent is successfully applied to adsorption of heavy metal ions in the high-temperature flue gas.

The preparation method comprises the following steps: shredding a light fibrous plant raw material which is difficult to process to 1-5mm, adding a certain amount of lignin, fully mixing with diammonium hydrogen phosphate or ammonium dihydrogen phosphate, carrying out hot press molding at 130-190 DEG C by using a pelletizer to prepare heavy particles with the particle size of 8-10mm, and carrying out high-temperature sintering to obtain the columnar activated carbon for desulfurization and denitrification of the fibrous plant raw material, thereby obtaining the columnar activated carbon for desulfurization and denitrification of the fibrous plant raw material and the columnar activated carbon for desulfurization and denitrification of the fibrous plant raw material. Heating the heavy particles to 400-700 DEG C in a rotary furnace, carbonizing for 1-3 hours, introducing a mixed gas of water vapor and air, and carrying out segmented activation at 850-950 DEG C-1000 DEG C to prepare high-quality activated carbon with the iodine value of more than or equal to 950 mg / g; crushing activated carbon to 140-325 meshes, mixing the crushed activated carbon with the composite glue solution, adding a proper amount of water for kneading, and forming the mixture into 2-8mm columnar particles by a hydraulic granulator or a screw extrusion granulator; through drying at the temperature of 100-300 DEG C and heat treatment at the temperature of 700-900 DEG C in a nitrogen, water vapor or anaerobic atmosphere, a basic group generated by the binder in the heat treatment has a very strong chemical adsorption effect on acid gas, later-stage modification is not needed, and excellent desulfurization and denitrification performance is achieved.

The invention discloses a compound environment-friendly corrosion inhibitor as well as a preparation method and application thereof. The choline ionic liquid comprises choline ionic liquid and amino acid, the choline ionic liquid is choline cations; the amino acid is one or more of cysteine and tryptophan. The compound environment-friendly corrosion inhibitor has high corrosion inhibition efficiency, and the compound structure of the compound environment-friendly corrosion inhibitor further improves the protection performance of the compound environment-friendly corrosion inhibitor through a dual adsorption mechanism of the synergistic effect of physical adsorption and chemical adsorption on the metal surface. According to the compound environment-friendly corrosion inhibitor, a full-green ionic liquid corrosion inhibition system is constructed, the environment-friendly requirement is met, and a metal protection solution can be provided for industrial acid pickling and other strong acid working conditions. Not only is the progress of a corrosion inhibition technology promoted, but also more economic and environment-friendly anti-corrosion application can be provided for actual industrial scenes.

The invention belongs to the technical field of lithium-sulfur batteries, and particularly relates to a polyurethane-based polymer, a preparation method and application thereof, an electrode binder and a lithium-sulfur battery positive electrode material. The polyurethane-based polymer provided by the invention has a structure as shown in a formula I; in the formula I, R1 comprises alkylene, substituted alkylene, phenyl, substituted phenyl, naphthyl or substituted naphthyl; r2 comprises an ether group, an alkenyl group, an ester group, a phenolic group, an aldehyde group, a wood fiber group or a glycosyl group. The polyurethane-based conductive polymer provided by the invention has abundant chemical adsorption sites, a hydrogen bond network can be formed among molecules, and soluble lithium polysulfide can be effectively anchored and limited on one side of a positive electrode when the polyurethane-based conductive polymer is used as a positive electrode binder, so that the purposes of inhibiting a shuttle effect, stabilizing the battery capacity and improving the cycle performance are achieved. In addition, the polyurethane-based conductive polymer can greatly eliminate the insulativity of a sulfur positive electrode, promote rapid transmission of lithium ions and electrons and improve the specific discharge capacity. # imgabs0 #

The invention discloses a gas concentration-oxidation-heat regeneration system and method, and relates to the technical field of coal mine energy conservation and emission reduction, the gas concentration-oxidation-heat regeneration system comprises a chemical adsorption device which is communicated with low-concentration gas and is used for adsorbing and dedusting the low-concentration gas, and a physical adsorption device which is communicated with the chemical adsorption device and is used for adsorbing and dehumidifying the low-concentration gas, the chemical adsorption device and the physical adsorption device are communicated with the oxidation device through the chemical desorption device and the physical desorption device respectively, the oxidation device is communicated with the waste heat utilization device, and low-concentration gas is subjected to dust removal treatment while methane adsorption is completed through the chemical adsorption device; the physical adsorption device is used for completing methane adsorption and dehumidifying low-concentration gas at the same time, and desorbing is completed and concentrated methane after desorption is subjected to oxidation and waste heat utilization at the same time, so that dust removal, dehumidification, concentration, oxidation and waste heat utilization of the device form a whole, the structure of the device is simplified, and the low-concentration gas is fully utilized.

The invention belongs to the technical field of microstructures, and discloses a preparation method and application of an ALD modified nano microstructure film, and the method comprises the following steps: adopting a magnetron sputtering method to form an Ag atomic layer on the surface of a PTFE film as an etching mask plate; blowing plasma over the surface of the mask plate by adopting an ICP reactive ion etching method to form a nanorod morphology; a first precursor Al2 (CH3) 3 and a second precursor H2O are alternately used, chemical adsorption and reaction are carried out on the surface of the obtained PTFE, an AlOx insulating layer is formed, the range of x is 1-2, and finally the ALD modified nanometer microstructure film is obtained. The film prepared through the method has a microstructure, distribution of electrons at the tip of the microstructure enables the effective area of charges on the same plane to be reduced, and the performance of the ALD modified nanometer microstructure film is improved. The relative polarization field intensity is reduced, and the performance of the friction nanometer generator is enhanced.

The invention relates to the field of wastewater treatment and remediation, and particularly discloses manganese modified mesoporous ceramsite based on shale oil mud as well as a preparation method and application of the manganese modified mesoporous ceramsite. The preparation method comprises the following steps: airing, crushing, sieving the shale oil mud and the coal gangue to obtain powder, mixing the shale oil mud powder, the coal gangue powder, the diatomite powder, SiC and MgO, adding water, granulating, drying, firing at high temperature, cooling to obtain the mesoporous ceramsite, and finally carrying out surface manganese modification. The manganese modified mesoporous ceramsite shows excellent performance in the aspect of treating thallium-containing wastewater, including higher removal efficiency, selectivity, regeneration capacity and chemical stability, and also has good environmental friendliness. Application tests show that the material can effectively remove thallium in a water body mainly through chemical adsorption and in-particle and surface diffusion mechanisms. The invention not only provides a novel efficient adsorption material for thallium-containing wastewater treatment, but also realizes resource utilization of solid wastes such as shale oil mud and the like.

The invention discloses application of a carbon steel corrosion inhibitor based on combination of physical adsorption, chemical adsorption and hydrophobic barrier, and relates to the technical field of metal corrosion inhibition. The technical problem that a corrosion inhibitor in the prior art is low in corrosion inhibition efficiency in a high-temperature strong-acid environment is solved. The preparation method of the carbon steel corrosion inhibitor comprises the following steps: firstly, ultrasonically dissolving 4-aminopyridine to obtain a solution I; then, dropwise adding an isopropanol solution of 2, 3-epoxypropyltrimethylammonium chloride into the solution I according to a molar ratio of 1: 1, removing a solvent through a rotary evaporation method, washing with ethanol, centrifuging to obtain quaternized 4-aminopyridine, and drying the quaternized 4-aminopyridine; and finally, the dried quaternized 4-aminopyridine and bromododecane are added into acetonitrile for a reaction, diethyl ether is dropwise added into obtained reaction liquid for precipitation, and the quaternized 4-aminopyridine-bromododecane carbon steel corrosion inhibitor is obtained after drying. The prepared carbon steel corrosion inhibitor is high in corrosion inhibition efficiency in a high-temperature and strong-acid environment.