Abstract: The present invention discloses an ultrasound-electrode-nano-porous membrane coupling hydrogen production and sterilization system, which comprises a vessel and a plurality of hydrogen production units arranged in the vessel. The hydrogen production unit comprises a cavity, and a broadband ultrasonic generator and a circular hydrogen production electrode located in the cavity. The circular hydrogen production electrode wraps around the broadband ultrasonic generator. A bottom membrane at the bottom of the cavity is hydrophobic at the inner side and hydrophilic at the outer side, and a side membrane of the cavity is hydrophilic at the inner side and hydrophobic at the outer side and is mounted vertically or obliquely upwards by an angle of 0-45 degrees.

Abstract: Disclosed are a caffeic acid-based composite material and a preparation method thereof. The method includes: exposing a cyclodextrin metal-organic framework material prepared from ?-cyclodextrin to a solution of caffeic acid in a short-chain alcohol to obtain a mixed material; and incubating the mixed material, wherein during the incubating, the cyclodextrin metal-organic framework material is in dynamic contact with the solution of caffeic acid in a short-chain alcohol. The prepared composite material includes a cyclodextrin metal-organic framework material and caffeic acid loaded on the cyclodextrin metal-organic framework material, wherein the cyclodextrin metal-organic framework material is prepared from ?-cyclodextrin. The caffeic acid is loaded in an amount of 15-18% of a total mass of the caffeic acid-based composite material. The caffeic acid is located in a cavity of the cyclodextrin metal-organic framework material.

Abstract: A method for preparing amantadine includes chlorinating adamantane with chlorine gas in a solvent in the presence of a Lewis acid catalyst to obtain a reaction liquid, and then removing the solvent and residues containing the catalyst in the reaction liquid, to obtain a chlorinated product. The chlorinated product is mixed with urea to a mixture, and the mixture is subjected to an amination reaction, to obtain amantadine. The results of examples show that the purity of the prepared amantadine could reach 99.5% or more.

Abstract: A method for preparing amantadine includes chlorinating adamantane with chlorine gas in a solvent in the presence of a Lewis acid catalyst to obtain a reaction liquid, and then removing the solvent and residues containing the catalyst in the reaction liquid, to obtain a chlorinated product. The chlorinated product is mixed with urea to a mixture, and the mixture is subjected to an amination reaction, to obtain amantadine. The results of examples show that the purity of the prepared amantadine could reach 99.5% or more.