4results about How to "Strong electrostatic attraction" patented technology

The invention provides high-naringenin-content modified shaddock peel fiber gel and a preparation method thereof.The preparation method comprises the following steps that after shaddock peel white pulp is subjected to quick freezing and smashing, pretreatment is conducted through an electrochemistry-assisted gradient enzymolysis technology, then customized immobilized naringinase is adopted for treatment, and high-naringenin-content shaddock peel fibers are obtained; and finally, uniformly mixing the fiber with carnosic acid and soybean saponin, and adding magnesium chloride for cross-linking and curing to obtain the modified shaddock peel fiber gel. According to the preparation method, electrochemical assisted gradient enzymolysis is adopted, so that a compact network structure of fibers can be destroyed to increase active sites, the immobilized naringinase not only can efficiently convert naringin and accurately enrich naringenin, but also can effectively improve bitter taste, and magnesium ions regulate and control a multiple cross-linked network formed by the components, so that the gel structure tends to be more stable; meanwhile, naringenin is stably loaded so as to avoid migration and aggregation of the naringenin, and the bioavailability and active efficacy of the naringenin are remarkably improved.

The application provides a modified activated carbon for removing perchlorate in water for sheep farms and a preparation method thereof, relates to the field of water treatment, and the method carries out reaction on activated carbon in a citric acid aqueous solution, uniformly loads a carboxyl layer on the surface of the activated carbon, and obtains preliminarily modified activated carbon; carries out reaction on the preliminarily modified activated carbon in an alkaline polydimethyl diallyl ammonium chloride aqueous solution, and strong cation quaternary ammonium salt is adsorbed on the surface of the carboxyl layer through electrostatic action, thereby obtaining secondarily modified activated carbon; and carries out reaction on the secondarily modified activated carbon in a triethylenetetramine aqueous solution, so that triethylenetetramine molecules are further combined to the strong cation quaternary ammonium salt through electrostatic adsorption, thereby obtaining the modified activated carbon for removing perchlorate in water for sheep farms, the adsorption capacity of the activated carbon for solutes with negative charges is significantly enhanced, and the treatment efficiency of the overall farm environment on perchlorate is improved.

The application discloses a three-dimensional zincophilic current collector composite negative electrode constructed by an electrochemical welding method.The negative electrode structure is connected by electrochemical welding of a copper base and ZnO / C fibers prepared by electrostatic spinning through pre-electrodeposition of zinc.The application is characterized in that zincophilic ZnO / C fibers are prepared by an electrostatic spinning process combined with high-temperature carbonization, and then ZnO / C and copper foil are subjected to "electrochemical welding" by using zinc electrochemical deposition technology, so that a Zn@ZnO / C-Cu negative electrode material is obtained.The application introduces zincophilic sites ZnO and a high-conductivity copper foil into a large specific surface area carbon fiber, and designs a negative electrode structure which is beneficial to higher efficiency of a zinc ion battery.The prepared negative electrode material improves the cycle and rate performance of the zinc ion battery, and promotes further development of the negative electrode material of the zinc ion battery.

This invention relates to the field of microbial detection technology, specifically to a live pathogenic microorganism extract. The extract mainly comprises magnetic extraction microspheres, which have a multi-layered composite structure, including, from the inside out: superparamagnetic Fe3O4 microspheres, a mesoporous silica layer, a thermo-sensitive-affinity bifunctional polymer brush, a responsive agent, and an antifouling layer. The antifouling layer effectively blocks most dead bacteria and proteins. Live bacteria approach the microsphere surface and begin metabolism, secreting esterases that hydrolyze ester bonds and reduce glutathione disulfide bonds, releasing quaternary ammonium cations that strongly capture live bacteria. As the temperature rises, the thermo-sensitive-affinity bifunctional polymer brush contracts, increasing the local concentration of quaternary ammonium cations, carboxyl groups of methacrylic acid, and positively charged methacryloyloxyethyltrimethylammonium chloride on the brush. This increases the electrostatic attraction between the brush and the densely negatively charged live bacteria, strongly capturing them.