10results about How to "Strong light absorption" patented technology

The invention discloses a preparation method and an evaluation method of a high-stability ferric oxide / graphene nano composite material, and relates to the technical field of nano materials. The preparation method comprises the following steps: dissolving expanded graphite in DMF (Dimethyl Formamide), standing for one night, carrying out ultrasonic treatment on a mixture in an ice bath environment for 2.5-3 hours, and adding water to prepare a multi-layer graphene solution; respectively weighing FeCl3. 4H2O and anhydrous sodium acetate, adding the FeCl3. 4H2O and the anhydrous sodium acetate into the multilayer graphene solution, and violently stirring to obtain a reaction precursor solution; carrying out heat preservation on the reaction precursor solution in a water bath, cooling to room temperature, and carrying out high-speed centrifugal separation to obtain a wet sample; and washing the wet sample with absolute ethyl alcohol and purified water, and drying to obtain reddish brown powder. The Fe2O3 particles are loaded on the graphene, the two-dimensional lamellar structure, high thermal conductivity and high dispersity of the graphene can effectively prevent agglomeration of the nano particles, uniform distribution of the particles is guaranteed, the stability of the nano material in an aqueous solution is improved, the light absorption capacity of the nano material is improved, and the performance of the material in photothermal conversion is more stable.

The conductive light shield for a probe station of the present invention for cable connection pin clips includes a conductive shield body and a light-absorbing layer. The conductive shield body covers the outside of the pin clip on the probe station. The conductive shield body includes a top wall and side walls extending downwards from the edge of the top wall, with one end of the side wall away from the top wall contacting the probe station. The conductive shield body provides electrostatic shielding and optical protection, ensuring that the pin clip is protected from electrostatic discharge and stray light interference during testing, thereby improving testing accuracy and stability. Cable openings are provided on the side walls to accommodate the cable layout between the pin clip and the testing machine, ensuring that the cable can pass smoothly and maintain a normal connection with the testing system. The light-absorbing layer is disposed on the surface of the conductive shield body. The organic carbon black coating has good light absorption properties and can effectively absorb stray light from the environment, reducing interference from light reflection on the optical alignment system.

The application belongs to the field of organic photovoltaics, and relates to a kind of polymer photovoltaic material and its preparation method and application. Double bromide compound A and double side tin compound B are subjected to Stille cross coupling reaction under the action of palladium catalyst, and the polymer photovoltaic material is obtained. The polymer photovoltaic material prepared by the application has an ultra-wide absorption spectrum range from 300 nm to 1200 nm. Such material exhibits an ultra-wide spectral range and a high extinction coefficient, and embodies excellent light absorption capacity. The strong light absorption capacity of the polymer photovoltaic material prepared by the application will help to improve the device efficiency of organic photovoltaics and improve the energy conversion efficiency of the device. The polymer photovoltaic material prepared by the application provides reference value for the design of functional materials in many fields of organic photoelectricity and solar energy utilization and conversion.

The invention discloses a preparation method of a composite phase change fiber, the composite phase change fiber and application of the composite phase change fiber, and the preparation method comprises the following steps: (1) adding octadecane microcapsules into an aqueous solution containing sodium alginate, and stirring I to obtain a solution I; (2) adding graphene nanosheets into the solution I obtained in the step (1), stirring II to obtain a spinning solution, and standing; and (3) putting the standing spinning solution obtained in the step (2) into a wet spinning device for wet spinning, and drying to obtain the composite phase change fiber, wherein in the wet spinning device, an outlet at the tail end of a spinning head is arranged in a coagulating bath. The process condition requirement is low, and the prepared phase change fiber is linear, has the characteristics of no leakage, high heat storage density, no toxicity, good flexibility, excellent light absorption performance and the like, can adjust the enthalpy value, and has a great prospect in the field of human body heat management.

The invention provides a preparation method of far-infrared heating thermal-insulation comfortable fibers, which comprises the following steps: aminating carbon nanotubes, dispersing the aminated carbon nanotubes in an aqueous solution, and then adding a copper source and a sulfur source to prepare a Cu2S-CNTs nano composite material; the octagonal hollow fiber is prepared by blending the octagonal hollow fiber with polyethylene glycol terephthalate to prepare a far infrared heating master batch, and blending the master batch with polyethylene glycol terephthalate for spinning. The fiber prepared by the invention has good far infrared heating capability, light absorption heating capability and excellent heat retaining property and comfort, and the prepared fabric has good breaking strength, weaving characteristic and excellent washability.

The invention relates to a preparation method and application of a carbon nanocage loaded indium oxide catalyst, and belongs to the technical field of catalyst preparation. The carbon nanocage with excellent photo-thermal performance and high specific surface area is combined with the indium oxide semiconductor material with good photochemical characteristics and excellent intrinsic catalytic performance, and the prepared carbon nanocage loaded indium oxide catalyst has the advantages of full-spectrum efficient utilization, excellent photo-thermal performance and high active site number. Under the illumination conditions that the wavelength is 300-2500nm and the light intensity is 2.75 W.cm <-2 >, the generation rate of the carbon nanocage loaded indium oxide catalyst for catalyzing carbon dioxide and hydrogen to prepare methanol reaches 1220.6 mu mol / gh, the methanol selectivity reaches up to 96%, and a new thought is provided for constructing a high-efficiency photocatalyst.

The application provides a high-bonding high-light-absorption AlN-based composite coating and a preparation method and application thereof. The composite coating comprises a bottom dense support layer and a top loose light-absorption layer, and the two layers are homomorphous. The preparation method comprises the following steps: adopting an arc ion locking technology to deposit the bottom dense support layer on an ion etching activated metal base, the bottom dense support layer has a first columnar crystal structure with dense arrangement; and then adopting a high-power pulse magnetron sputtering technology to deposit the top loose light-absorption layer on the bottom dense support layer, the top loose light-absorption layer has a second columnar crystal structure with loose arrangement. The composite coating provided by the application has high light-absorption anti-reflection performance and excellent high-temperature oxidation resistance in a wide wave band, the bonding force with the metal base reaches 28 N, the scratch resistance is strong, the chemical stability is high, and the preparation method is simple.

The present invention discloses a Pt 0.5 Cu 0.5 The invention relates to a preparation method of a / Ti-H2 photocatalyst material and its application, and belongs to the technical field of material preparation and photocatalytic CO2 reduction. 0.5 Cu 0.5 / Ti is treated with hydrogen to obtain Pt 0.5 Cu 0.5 / Ti-H2 photocatalyst material. The present invention obtains Pt 0.5 Cu 0.5 / Ti‑H2 photocatalyst materials and applied them in the field of photocatalytic CO2 reduction. 0.5 Cu 0.5 / Ti‑H2 significantly increased the Pt 0.5 Cu 0.5 / Ti photocatalyst efficiency. This invention simulates natural photosynthesis to reduce CO2 into high value-added fuels, providing some ideas for the future design of highly active photocatalysts.

The invention relates to the technical field of novel photocatalytic materials, and discloses a preparation method and application of a MnS (at) ZIF-67 p-n heterojunction composite material, and the preparation method comprises the following synthesis steps: S1, synthesizing alpha-MnS powder by a hydrothermal method; s2, the alpha-MnS powder is dispersed in deionized water, and turbid liquid is obtained; and adding cobalt chloride hexahydrate and 2-methylimidazole into the turbid liquid, violently stirring, standing, aging, washing and drying to obtain the MnS (at) ZIF-67 p-n heterojunction composite material. The alpha-MnS (at) ZIF-67 p-n heterojunction composite material prepared by the preparation method disclosed by the invention shows enhanced charge carrier separation and excellent light absorption capability, and is beneficial to efficient photocatalysis.

The invention provides a shading high-barrier composite film capable of replacing aluminizing and a preparation method thereof. The composite film sequentially comprises a base layer, a shading layer, an ultraviolet-proof layer and a protective layer from outside to inside. The base layer is a polyvinyl chloride film layer, the shading layer is prepared by mixing montmorillonite nano clay, a high-molecular polymer and a nanoscale titanium dioxide dispersion liquid, the ultraviolet-proof layer is an ultraviolet light absorber formed by mixing a bio-based material and a benzophenone or triazole compound, and the protective layer is a glycol terephthalate layer. Wherein the bio-based material is prepared from sugarcane extract, anthocyanin and chitosan according to a specific proportion. The preparation method comprises the following steps: preparing the base layer, the shading layer, the ultraviolet-proof layer and the protective layer, and performing hot-pressing compounding to obtain the composite film. In addition, specific parameters of the shading layer coating process, the ultraviolet-proof layer spraying process and the protective layer hot-pressing compounding are also introduced. The composite film has shading and ultraviolet-proof functions, can replace a traditional aluminum laminated film, and has a wide application prospect.