9results about How to "Increase surface adsorption capacity" patented technology

The invention discloses a method for synthesizing a biomass-based carbon material by coupling activation through a molten salt method, which comprises the following steps: (1) crushing a biomass raw material into powder, and pre-carbonizing at high temperature in an inert atmosphere to obtain biochar; (2) mixing biochar, chlorate molten salt and an activating agent, and calcining at high temperature in an inert atmosphere to obtain a carbon material; and (3) washing the obtained carbon material with water, carrying out suction filtration after water washing, then carrying out acid washing, carrying out suction filtration after acid washing, then carrying out water washing until eluate is neutral, and then drying to obtain the biomass-based carbon material. The invention also discloses an application of the carbon material prepared by the method in preparation of a supercapacitor. The biomass-based capacitor carbon material prepared by the invention has a graded porous structure, micropores are beneficial to improving the surface adsorption capacity of ions, mesopores can provide more active sites and enhance the ionic conductivity, and macropores can provide a rapid substance transmission channel and reduce the mass transfer resistance; through an electrochemical performance test, when the material is used as a supercapacitor electrode material, the material has excellent capacity and cycling stability.

This invention relates to the field of nanoscale full-spectrum photocatalytic materials, and particularly to a method for preparing a molybdenum selenide / oxygen-deficient bismuth oxybromine@gold three-phase Z-type heterojunction photocatalyst. This method solves the problems of low photogenerated electron-hole separation efficiency, narrow full-spectrum response range, and poor stability in existing bismuth-based photocatalysts. The preparation method involves first preparing oxygen-deficient BiOBr nanospheres via a solvothermal method, then directly reacting tetrachloroauric acid with oleylamine in toluene to prepare small-particle-size monodisperse Au nanoparticles, which are then combined with oxygen-deficient BiOBr to prepare a BiOBr@Au nanosphere core-shell structure. Finally, a MoSe2 / oxygen-deficient BiOBr@Au three-phase composite material is prepared via a hydrothermal reaction. The catalyst of this invention exhibits absorption capacity under the full spectrum of light, and simultaneously achieves a synergistic enhancement of carrier separation efficiency and strong redox capability, demonstrating excellent photocatalytic activity and the ability to efficiently degrade pollutants and produce hydrogen.

The invention provides an environment-friendly pulse electroplating solution. The environment-friendly pulse electroplating solution is prepared from the following components: 65 to 85 parts of copper sulfate pentahydrate, 80 to 120 parts of sulfuric acid, 0.4 to 0.8 part of sodium chloride, 0.6 to 0.9 part of triammonium citrate, 0.6 to 1.0 part of polyvinylpyrrolidone, 0.3 to 0.6 part of polyvinyl alcohol, 0.5 to 1.2 parts of nonylphenol polyoxyethylene ether, 0.2 to 0.5 part of sodium sulfosuccinate and 0.1 to 0.3 part of castor oil polyoxyethylene ether. Through synergistic cooperation of all the components, the electroplating liquid has good deep plating capacity and electroplating rate and is environmentally friendly.

The present invention relates to a microchannel plate deformation detection device and detection method. The detection device includes a fixture, which is a structure with a hollow center or a recessed structure, and a slot is arranged on the inner edge of the fixture; a dial is arranged below the fixture; an angle scale is arranged on the dial; a rotating bracket is arranged below the dial to rotate the fixture in a horizontal plane; an inspection light source is arranged above the fixture and projects on the microchannel plate; the detection method includes: selecting the inspection light source and determining the qualified judgment standard according to the processing technology of the microchannel plate; projecting the inspection light source on the surface of the microchannel plate; rotating the microchannel plate, monitoring the projected image in real time, and comparing the changes in the projected image with the qualified judgment standard. The technical problem to be solved is to provide a detection means for the micro-deformation of the microchannel plate caused by the acid etching process, the reduction process, the evaporation process, etc., so as to be more suitable for practical use.

This invention discloses a high specific surface area mesoporous tin oxide powder and its preparation method. The method includes: dissolving a tin source in a mixed solvent of alcohol and deionized water, adding a ketone complexing agent and a nonionic dispersant, and stirring to form a tin-based complex precursor solution; then transferring the solution to a hydrothermal reactor for hydrothermal aging treatment, causing the precursor solution to hydrolyze and condense, forming gel particles in situ; after solid-liquid separation, washing with alternating anhydrous ethanol and dilute ammonia water, and drying to obtain the precursor powder; finally, performing staged heating calcination under an air-nitrogen mixed atmosphere, first removing organic components at low temperature, and then completing the crystal phase transformation at high temperature to obtain rutile phase SnO2 powder. The powder has an average particle size of 8–15 nm and a specific surface area of ​​85–110 m² / g. 2 The powder has a pergola size of 3–6 nm and good dispersibility. This invention effectively suppresses grain agglomeration through complexation regulation, hydrothermal-sol-gel coupling, and gradient atmosphere calcination. The prepared powder is suitable for applications such as gas sensors, lithium-ion battery anodes, or transparent conductive films.

The invention discloses an ethylbenzene dehydrogenation catalyst as well as a preparation method and application thereof. Based on the total mass of the catalyst, the catalyst comprises the following components in percentage by mass: 55-68% of a carrier halloysite; 32%-45% of an active component; the active component is a composite metal oxide; the composite metal oxide is prepared from Fe2O3, K2O, CeO2, MoO3, ZrO2, BaO, Na2O and Sc2O3. The catalyst is applied to a reaction for preparing styrene through ethylbenzene dehydrogenation, and has relatively high catalytic activity, selectivity and relatively good stability.

The application relates to a method for improving the performance of lithium batteries by in-situ growth of carbon nanofibers on a silicon-carbon negative electrode through plasma induction, and belongs to the technical field of new materials and functional materials. The silicon-carbon negative electrode material is subjected to surface activation through plasma pretreatment technology, and then carbon nanofibers are in-situ grown through chemical vapor deposition to construct a three-dimensional conductive network structure. The plasma-assisted chemical vapor deposition technology is adopted, the silicon-carbon surface activated by plasma is used as a substrate, and in-situ growth is carried out to obtain uniformly distributed carbon nanofibers, so that a three-dimensional conductive composite structure closely combined with silicon-carbon particles is formed, and the high-rate cycle stability of the lithium ion battery is effectively improved.

This invention provides a foam modifier, its preparation method, and its application. The foam modifier comprises a surfactant, nanoparticles, and water; the surfactant includes anionic gemini surfactants and anionic nonionic surfactants; the nanoparticles are catecholamine polymer particles. The structural formula of the anionic gemini surfactant is [insert structural formula here], and the structural formula of the anionic nonionic surfactant is R6-O-(R8-O). n -R7; The foaming agent described has good foaming properties and good stability under high-salt and high-calcium-magnesium conditions, and can be applied in high-salt reservoirs.

The utility model relates to a spiral nozzle device based on wind power coupling belongs to the field of agricultural equipment spraying technology, the utility model discloses a casing assembly, transmission assembly, wind power coupling assembly and spiral nozzle are composed of, casing assembly, transmission assembly, wind power coupling assembly and spiral nozzle arrange from top to bottom and are fixedly connected, the utility model discloses a casing assembly, transmission assembly to the system power input, through wind power coupling assembly forms the wind power coupling field in the liquid medicine flow channel, and further promotes the atomization adsorption capacity of liquid medicine droplet, through spiral nozzle promotes liquid medicine spraying efficiency. The utility model discloses the application on the target pesticide spraying machine, can better promote the liquid medicine spraying efficiency, effectively reduces the liquid medicine waste and environmental pollution.