5results about How to "Efficient inactivation" patented technology

The invention discloses a far ultraviolet micro-LED photocatalyst monolithic integrated chip and a preparation method of the far ultraviolet micro-LED photocatalyst monolithic integrated chip. According to the chip, an AlGaN-based micro-LED array with the emission peak position of 220-230 nm is adopted as a far ultraviolet light source, a conformal composite layer structure with optical shaping and photocatalysis dual functions is integrated on the light emitting face of the AlGaN-based micro-LED array in a monolithic mode, and a composite layer is composed of a high-transmittance framework layer and a porous catalytic skin layer; the catalytic skin layer conformally deposits a porous membrane with the thickness of 50-300 nm on the surface of the lens, the aperture is 10-200 nm, the porosity is 20-60%, and degradation of organic pollutants and inactivation of microorganisms in air are achieved under the wave band of 220-230 nm. And a transition layer with the thickness of 50-200 nm is arranged between the light emitting surface of the chip and the composite layer, so that the adhesive force is improved and the thermal stress is relieved. The device is compact in structure, low in energy consumption, free of mercury, environmentally friendly and suitable for the fields of far ultraviolet disinfection, air purification, healthy illumination in closed space and the like.

The invention discloses a preparation method and application of a recyclable organic photovoltaic antibacterial catalyst with weak light response, and the method comprises the following operation steps: A, crushing a carbon material to 3000-5000 meshes to obtain a carbon-based material; b, an organic photovoltaic material and chloroform are mixed according to the following weight ratio: 0.6 mg of the organic photovoltaic material and 10 mL of chloroform, a mixed solution is obtained, the organic photovoltaic material is PTQ10: Y6, and PTQ10: Y6 is prepared by mixing PTQ10 and Y6 according to the weight ratio of 1: 1; and C, uniformly coating the mixed solution obtained in the step B on the carbon-based material obtained in the step A according to a weight ratio of the mixed solution to the carbon-based material of 1: 5000, and drying to obtain the organic photovoltaic antibacterial catalyst which has weak light response and can be recycled. The organic photovoltaic antibacterial catalyst disclosed by the invention has excellent bactericidal ability to acinetobacter baumannii, is simple and convenient to use, can be repeatedly used, is high in safety, can generate a large number of peroxide species in a short time under a weak light condition, induces the acinetobacter baumannii to die by attacking bacterial cell membranes, also has good bactericidal ability in vivo, and can be used for preparing the antibacterial agent for the acinetobacter baumannii. The wound healing can be promoted.

The application belongs to the technical field of water sterilization, and particularly relates to preparation and application of aptamer modified gold loaded graphite phase carbon nitride for selectively killing staphylococcus aureus. The graphite phase carbon nitride is synthesized by a high-temperature polymerization method, gold nanoparticles are loaded on the surface of the graphite phase carbon nitride by an in-situ chemical reduction method, and then nucleic acid aptamer (apt) capable of target recognition of staphylococcus aureus is grafted on the surface of the material by specific bonding of a sulfur-gold bond, thereby obtaining nucleic acid aptamer modified gold loaded graphite phase carbon nitride (apt@CNAu). The composite material can selectively kill staphylococcus aureus under visible light driving through the synergistic effect of aptamer-mediated molecular recognition and photocatalytic activity, and provides an efficient and ecologically safe innovative solution for targeted management of water pathogenic bacteria, and successfully overcomes the technical bottleneck that traditional technology is difficult to selectively inactivate pathogenic bacteria.

A peri-implantitis treatment device (1) according to the present invention includes: an electrode (14) for applying a negative electric potential to a metal portion (7) of a dental implant (8); a potential controller for controlling the electric potential of the electrode (14); and a mouthpiece (2) that holds the electrode (14) and the potential controller and is attached to the dental implant (8). The peri-implantitis treatment device (1) according to the present invention makes it possible to effectively inactivate even bacteria (colonies) that have formed biofilms hard to inactivate by antibiotics in deep periodontal pockets where mechanical cleaning is difficult.

The utility model relates to the field of kitchen utensils, in particular to a stainless steel UV smoke hood which comprises a smoke hood body, a limiting groove is formed in the rear side in the smoke hood body, a filter plate is connected to the lower portion in the smoke hood body in a sliding mode, an oil collecting frame is arranged on the lower portion in the smoke hood body in a sliding mode, and locking pieces are rotationally arranged on the left side and the right side of the smoke hood body and used for locking and limiting the oil collecting frame. A mounting frame is slidably connected to the upper portion in the smoke hood, the rear side of the mounting frame makes contact with the limiting groove, and a UV lamp tube is clamped to the mounting frame and is detached by being pushed backwards to be separated from the mounting frame. Large-particle grease is efficiently intercepted through the sliding type filter plate, the load of a follow-up treatment unit is remarkably relieved, the UV lamp tube capable of being rapidly disassembled and assembled excites the deep ultraviolet photolysis effect under the assistance of the clamping limiting structure, odor molecules and organic pollutants are thoroughly decomposed in cooperation with ozone oxidation, and meanwhile microorganisms are efficiently inactivated.