6results about How to "Enhance light absorption" patented technology

The invention discloses a water quality sampling and detecting device for water conservancy and hydropower construction, and provides the following scheme that the water quality sampling and detecting device comprises a box body, a rotating disc is rotationally connected to the box body, a plurality of water storage bottles are inserted into the rotating disc, the box body is provided with a water pipe, the box body is provided with a first butt joint pipe block and a second butt joint pipe block, and a water inlet cylinder is installed at the tail end of the water pipe; a piston is slidably connected into the water inlet cylinder, and a laser lamp is installed on the box body. Water flow can continuously flush the water storage bottle through the water pump, purified water does not need to be carried, the size is small, operation and carrying are more convenient, when the laser lamp works and a water sample exists in the water storage bottle, light deflects, the light falling point deflects, and therefore the light is emitted to the light scattering plate, the light scattering plate is illuminated, and the water quality is improved. By controlling the power of the water pump, the position of the piston can be conveniently adjusted, the gravity center of the water inlet cylinder can be conveniently adjusted, a deep water layer can be conveniently sampled, a water pipe does not need to be held by hand, and the working intensity is reduced.

The invention discloses a high-stability light-absorption low-reflection film which comprises a substrate layer, an Al2O3 layer, Ti layers, SiO2 layers and a hydrophobic layer, wherein the Ti layers and the SiO2 layers are alternated with each other; wherein the sum of the total optical thicknesses of the Ti layers and the SiO2 layers which are alternated with each other is greater than 4.4726; the invention further discloses a preparation method of the high-stability light-absorption low-reflection film. According to the invention, the Ti layer with a higher refractive index is creatively selected to replace a traditional black film made of a high-refractive-index material, and the high-refractive-index material and the low-refractive-index material are mutually alternated, so that the effective refractive index of the film layer is close to the refractive index of the substrate layer; the problem that the spectral reflectivity is unstable due to the fact that a thin layer is too sensitive in the plating process of a traditional light-absorbing low-reflection film is solved, and the stability, compactness and other performance of the film layer are effectively improved.

The invention provides a molybdenum disulfide nano material rich in sulfur defects and a preparation method and application thereof, and belongs to the technical field of nano material preparation and sterilization. Starting from the properties of the molybdenum disulfide nano-material, sulfur defects with different concentrations are introduced to the surface of the nano-material through high-temperature calcination, and the molybdenum disulfide nano-material rich in sulfur defects is prepared; the molybdenum disulfide nano material rich in sulfur defects is in the shape of nano flower balls with the diameter of 200-300 nm, has the optimal photothermal conversion efficiency and high adsorbability under near-infrared light irradiation, and can efficiently inhibit the activity of escherichia coli and bacillus subtilis; the preparation method disclosed by the invention is simple in process, stable in reaction system, wide in reactant source and environment-friendly, shows a universal sterilization effect, is expected to introduce a new method in the field of sterilization of nano materials, provides a new technology and a new idea for design and preparation of functional nano materials, and has very good practicability.

The invention relates to the technical field of material preparation, and discloses a preparation method of a PC-SP-MCN double-layer Janus composite membrane for synergistically driving interface evaporation and photocatalysis by taking graft copolymerization and phase transformation as main synthesis methods. Secondly, the application of the composite membrane in seawater desalination and purification treatment of wastewater containing dye, heavy metal and biological pollution is introduced. In addition, the double-layer Janus composite membrane is prepared through phase transformation, and the introduced silicon dioxide grafted ionic liquid enables the material to have good salt tolerance. Through application research in the aspects of seawater desalination and purification treatment of wastewater containing dye, heavy metal and biological pollution, the PC-SP-MCN double-layer Janus composite membrane capable of coordinating solar-driven interface evaporation and photocatalysis prepared in the invention is preliminarily considered to have relatively high solar energy conversion efficiency; the photocatalyst has excellent salt resistance and pollution resistance and efficient photocatalytic degradation performance, and can be widely applied to the fields of seawater desalination, wastewater treatment and the like.

This invention belongs to the field of photo-evaporation desalination of water, specifically relating to a composite photoevaporator for photo-evaporation desalination and its preparation method. Carbon nanotubes, which possess excellent light absorption and water transport capabilities, are dispersed in biomass materials. Simultaneously, a layer of copper acetate is sprayed onto the surface of the biomass materials containing carbon nanotubes, forming copper particles after carbonization. The photoevaporator prepared by this invention combines metal, carbon nanotubes, and biomass materials, exhibiting contrasting hydrophilic and hydrophobic properties and strong salt resistance.

The application discloses a supported photocatalyst, a preparation method thereof and application of the photocatalyst in hydrogen sulfide decomposition. x MXene, wherein T x represents surface functional groups -O, -F, -OH) and a semiconductor material cadmium sulfide (CdS) loaded on the surface of the material, namely CdS / Mo2CT x photocatalyst; the photocatalyst directly decomposes hydrogen sulfide in a special quartz reactor filled with the supported photocatalyst to form a micro reaction bed, pure hydrogen sulfide (H2S) gas is introduced, and then the decomposition is carried out under irradiation of a laser; in the process, hydrogen sulfide is decomposed into hydrogen (H2) and sulfur (S). The application has the advantages of simple operation, mild conditions, high decomposition efficiency and the like, and can realize direct decomposition of hydrogen sulfide under the action of light only.