119results about How to "Improve the utilization rate of sunlight" patented technology

The invention relates to an organic wastewater treatment film reactor utilizing solar energy photo-assisted electro-catalysis, which comprises a storage tank of water to be processed, a flow controllable constant flow pump, a photoelectric chemical reactor, a clear water storage tank and a solar battery component, wherein a photo anode and a cathode are correspondingly arranged in the reactor; the photo anode takes a porous metal membrane as a base body, and a TiO2 nano tube or a TiO2 mesoporous membrane is formed on the surface of a porous titanium membrane (net) by an electrochemical anisotropic etching technology; a porous channel film is used as the base body; a metal oxide coating electrode with high electrochemical catalytic activity and high electrical conductivity is prepared by a dipping film-forming method, simultaneously, by doping and modifying operations, the electrode material has photo catalytic activity and the reaction efficiency is improved. The reactor integrates electrochemistry, photocatalysis and film separation technologies; the three technologies are coupled to enhance a synergistic effect; the wastewater treatment efficiency can be improved; a solar component is adopted as a power supply; the clean solar energy is utilized to the maximal degree, and the organic wastewater treatment film reactor has social benefits of reducing environment load and economic benefits of reducing cost.

The invention discloses a preparation method of a transparency film used for increasing photoelectric conversion efficiency of a solar photovoltaic cell. The transparency film used for increasing photoelectric conversion efficiency of the solar photovoltaic cell comprises: (1) at least one down conversion agent A; (2) at least one up conversion agent B; (3) at least one up and down conversion agent C; (4) at least three visible light arousing long afterglow light conversion agent D, E, F; (5) a matrix resin (polyethylene, polystyrene or polyvinyl chloride); (6) an ageing resistant consistent with above materials (1), (2), (3), (4) and (5). The transparency film used for increasing photoelectric conversion efficiency of the solar photovoltaic cell is provided with the characteristics of optical conversion and noctilucence, and is lasting and stable, can cause the common photovoltaic cell to make use of solar for longer time and more effectively, and mostly can improve the photoelectric conversion efficiency of the common photovoltaic cell more than 30%, namely can cause the photoelectric conversion efficiency of the common photovoltaic cell to achieve more than 22%.

The invention relates to the technical field of photocatalysis, particularly to a silver phosphate/zinc oxide composite photocatalytic material and a preparation method therefor. The preparation method comprises the following steps: ultrasonic dispersion of zinc oxide in deionized water is performed so as to obtain a zinc oxide dispersion liquid; silver nitrate is dissolved into deionized water, the deionized water is dripped into the zinc oxide dispersion liquid under a magnetic force stirring condition so as to obtain a mixed solution, after a period of time of stirring, a well prepared phosphate solution is slowly added into the mixed solution of zinc oxide and silver nitrate for stirring continuously for a period of time, after dripping, a mixed solution is obtained and stirred continuously, after product suction filtration, absolute ethyl alcohol and deionized water are used for washing repeatedly, then vacuum drying is performed, and the silver phosphate/zinc oxide composite photocatalytic material is obtained. The silver phosphate/zinc oxide composite photocatalytic material provided by the invention has the advantages that raw material sources are wide, the preparing process is simple and feasible and the cost is low. The prepared silver phosphate/zinc oxide composite photocatalytic material has a better photocatalytic degradation effect on an organic dye material, rhodamine B, under the irradiation of ultraviolet light, and the composite photocatalytic material has wide application prospects in the fields of environmental pollution improvement and purification, and environment-friendly materials.

The invention relates to an automatic tracking solar power generating device, comprising a solar cell and a solar cell bracket, wherein the solar cell is arranged on the solar cell bracket; a photoreceptor is arranged in the east-west direction above the solar cell; the photoreceptor output a signal by means of blocking of a baffle; and the output signal is used for controlling a stepping motor rotating horizontally. The stepping motor drives the solar cell bracket by a gear and semicircular racks so as to carry out swivel adjustment on the east-west angle of the solar cell. The elevation angle of the solar cell bracket and the sun is changed by expansion of an expansion device due to increase and decrease of pressure caused by phase change of an energy-storing medium. Therefore, omnibearing tracking of solar power generation is realized and the sunlight utilization ratio is improved by 30%-50% compared with that obtained by a fixed solar power generating device.

The invention discloses a light-gathering seawater desalination device and a seawater desalination method. The seawater desalination device includes: a semielliptical solar heat collection cover, wherein a freshwater collection tank is arranged at the bottom of the inner wall of the solar heat collection cover, the freshwater collection tank defines an evaporation plane at the bottom of the solarheat collection cover, a freshwater outlet is arranged in the freshwater collection tank, the freshwater outlet is connected with a freshwater storage unit, the b-axis length of the solar heat collection cover is longer than the a-axis length of the solar heat collection cover, and the b-axis is perpendicular to the evaporation plane; a light gathering member, wherein the light gathering member isconfigured to gather sunlight radiated to the solar heat collection cover; and a cooling unit, wherein the cooling unit is arranged outside the solar heat collection cover, and is configured to coolthe outer surface of the solar heat collection cover. The light-gathering seawater desalination device can be directly used on the water surface (such as the sea surface), and has the advantages of simple structure, low cost, convenience in use, high solar energy utilization rate, high seawater desalination efficiency and high water purification efficiency.

The invention discloses a silver phosphate/P25 bi-functional composite material, a preparation method and an application thereof, and belongs to the technical field of antibacterial materials, photocatalysis and environment treatment. The preparation method comprises the following steps of dispersing the P25 in water under the assistance of ultrasonic to obtain a P25 dispersion solution; dissolving silver nitrate in deionized water, adding the silver nitrate solution into the above P25 dispersion solution with magnetic stirring to obtain a mixed solution; dropwise adding a prepared phosphatic solution into the mixed solution slowly until brown yellow turbid appears in the reaction system; stirring continuously after the phosphatic solution is completely added; pump-filtering, washing, and vacuum-drying the product to obtain the silver phosphate/P25 bi-functional composite material. The prepared composite material not only has relatively good photocatalytic degradation effect for an organic dye rhodamine B, but also has wide-spectrum sterilization effect for common bacteria. The bi-functional composite material has wide application prospects in the fields of treatment and purification of environment pollutions, environment-friendly functional materials, etc.

The invention discloses a novel digested-effluent organic liquid fertilizer and a preparation method therefor, relates to a fertilizer prepared from wastes or garbage and particularly relates to the low-concentration and high-efficiency organic liquid fertilizer prepared from digested effluent. The object of the invention is to provide the low-concentration, high-activity and good-fertilizer-effect organic liquid fertilizer, which is prepared through adding a composite bacterium agent and a physical light-conversion material into the biogas liquid, and the preparation method therefor. The novel digested-effluent organic liquid fertilizer disclosed by the invention contains the ingredients in parts by mass: 1,000 parts of digested effluent, 10-20 parts of three-acid mixture, 2.5-3.5 parts of the composite bacterium agent and 2.5-3.5 parts of the physical light-conversion material. According to the novel digested-effluent organic liquid fertilizer disclosed by the invention, a variety of physiologically-active nutrients are provided for plant growth, the site condition of soil is greatly improved, and meanwhile, the problem of secondary pollution resulting from the digested effluent is solved. The novel digested-effluent organic liquid fertilizer and the preparation method therefor are applied to the field of agricultural planting.

The invention discloses a white packaging film for a double-glazed photovoltaic module. The white packaging film comprises, by weight, 45-65 parts of ethylene-vinyl acetate, 25-50 parts of ethylene propylene rubber, 1-7 parts of white pigment and 0.5-10 parts of aids, wherein the ethylene-vinyl acetate comprises, by weight, 14-33% of vinyl acetate and 15-55% of ethylene propylene rubber; and the ethylene propylene rubber has a density of 0.80-0.91g/cm<3> and Mooney viscosity of 20-40. The dedicated white EVA film for the double-glazed photovoltaic module has high reflection rate, tenacity, volume resistivity and impact resistance, and the double-glazed photovoltaic module made of the film does not cause starved joints, bubbles or the like.

The invention discloses a novel ZnO/Cu2O heterojunction photocatalytic material and a preparation method thereof. According to the material, soluble copper salt is dissolved in 50 mL of deionized water, hierarchical ZnO micro-nano flowers are dispersed into the solution uniformly under magnetic stirring condition, then proper amount of sodium hydroxide and citric acid are added in sequence, the materials react in a water bath at 50 DEG C for 30 min, and a hierarchical ZnO micro-nano flower structure modified with rod-shaped Cu2O nanoparticles is obtained. The preparation technology of the novel ZnO/Cu2O heterojunction photocatalytic material is simple and convenient, expensive equipment is not involved, the product is novel in morphology and larger in specific surface area, response of ZnO in the visible light range is extended, furthermore, a built-in electric field produced in a heterojunction at a compound interface of the product can promote effective separation of photo-induced electron-holes remarkably and inhibit recombination of the photo-induced electron-holes, so that the photo-quantum efficiency is increased obviously, and excellent photocatalytic performance and cycle stability are shown.

The invention discloses a visible light responsive NaFeTi3O8 photocatalytic material, a preparation method and application thereof. The molecular formula of the photocatalytic material is NaFeTi3O8. The photocatalytic material can be prepared by a high temperature solid state method or sol-gel method. The preparation method is simple, and the preparatory cost is low. The obtained NaFeTi3O8 powder has uniform particles and an average particle size of 80-100 nanometers, a wide absorption band in the scope of visible light wavelength, and good chemical stability, is economical and practical, can treat organic pollutants in water, and is a potential green and environment-friendly, and visible light responsive photocatalytic material.

The invention relates to 100-200nm strontium titanate/titanium dioxide (rutile phase) composite nano fibers by means of a one-step electrostatic spinning method. The method is simple and high in operability. The obtained fibers are controllable in dimension, uniform in distribution and good in continuity. Compared with single TiO2 (rutile phase) and single SrTiO3, the photocatalytic activity of the prepared SrTiO3/TiO2 (rutile phase) composite nano fibers is hugely improved and the SrTiO3/TiO2 (rutile phase) composite nano fibers have an important application prospect in photocatalytic degradation of degradation-resistant organic pollutants such as methyl orange, methylene blue and rhodamine B.

The invention relates to a method for preparing anti-reflecting glass by an acid corrosion method from a Na2O-CaO-SiO2 system glass matrix. The method aims to reduce the surface reflectivity of glass for photovoltaic purpose, photo-thermal purpose, buildings greenhouses and decoration purpose and increase the transmissivity of the glass, thereby increasing solar utilization rate, improving photoelectric or photo-thermal conversion efficiency, enhancing vision sharpness and reducing light pollution. The purposes of the method are achieved by the following technical scheme: firstly, the glass matrix is put in a corrosion tank holding acidic solution and corroded in the corrosion tank; and after being taken out and cleaned, the glass matrix is put in a drying oven to be dried, thus the anti-reflecting glass is obtained. The method has the benefits that the cost is low, and the glass is good in anti-reflecting performance and high in transmissivity; and the transmissivity of the glass to the visible light can reach 97%.

The invention relates to the field of preparation of photovoltaic cells and discloses an organosilicone composition, a reflecting coating, a preparation method therefor and a photovoltaic module comprising the reflecting coating. The organosilicone composition contains basic polymerization ingredients, a catalyst, a cross-linker and reflecting particles, wherein the basic polymerization ingredients, the catalyst and the cross-linker are not simultaneously mixed before use, the basic polymerization ingredients contain the ingredients in parts by weight: 100 parts of polymethyl siloxane, of which each molecule contains at least two Si-Vi bonds, 5-15 parts of hydrogenated epoxy resin or alicyclic epoxy resin modified hydroxyl-terminated polymethylvinylsiloxane and 10-20 parts of siloxane resin containing at least two Si-Vi bonds, and the cross-linker is polyorganosiloxane containing at least two Si-H bonds. According to the organosilicone composition, the adhesion of the reflecting coating can be improved while the curing time of the reflecting coating prepared from the organosilicone composition is shortened.

The invention relates to a metal back electrode of flexible film solar cell and a preparation method thereof, which belong to the technical field of solar cell. The technical solution is that a metal back electrode with texture structure on the surface is directly prepared on a flexible substrate, and the method comprises the following technological steps of: (1) forming a concave-convex texture structure on the flexible substrate; and (2) depositing a metal film on a substrate with the concave-convex surface structure as the metal back electrode of the flexible cell. The method for preparing the flexible film solar cell by using the texture metal back electrode has the following advantages that: 1) the surface structure of the back electrode can be adjusted by changing microparticle size and interval, which is convenient, flexible and favorable for realizing optimization of technological parameters; 2) the metal back electrode has high reflection rate, and can improve utilization rate of sunlight and improve efficiency of the solar cell; and 3) the sunlight has high optical distance in the cell, so thickness of absorption layer of film battery can be reduced, production time can be shortened, production cost can be reduced and production efficiency is improved.

The invention discloses a light wave conversion-antireflection difunctional sol material and a preparation method of a thin film thereof. The molecular formula of the disclosed light wave conversion-antireflection difunctional sol material is Am,Bn:SiO2; when A is Tb<3+>, B is Zn<2+>, m is more than or equal to 0.2% and less than or equal to 0.6%, n is more than or equal to 0.2% and less than or equal to 0.8%; or B does not exist, m is more than or equal to 0.2% and less than or equal to 0.6%; when A is Eu<3+>, B is Al<3+>, m is more than or equal to 0.1% and less than or equal to 0.5%, and n is equal to 0.4%. The preparation method of the thin film of the light wave conversion-antireflection difunctional sol material comprises the steps of adding soluble rare-earth salts and/or soluble metal salt into a mixed solution of tetraethoxysilane, absolute ethyl alcohol and deionized water, and coating a film on the surface of glass through sol subjected to hydrolytic polycondensation and ageing by a pulling method, and the dried and annealed wet film has the functions of light wave conversion and antireflection. The effects of light wave conversion and antireflection are achieved by controlling the refractive index and the thickness of the thin film through the preparation processes of regulating the additive amount of a solvent of a precursor solution, the varieties and mixing amount of metal and rear-earth salts, the pulling rate, and the amount of layers of the film.

The invention provides an active light collection and heat storage type sunlight greenhouse, which comprises a combined framework, a wall heat preservation material, an elevation-adjustable back roofand a solar active heat storage and release system. One side, facing a light collection roof, of the elevation-adjustable back roof is provided with a reflector. One end of the elevation-adjustable back roof is hinged to a back wall, and the elevation of the back roof is regulated by a control system to realize active light collection and secondary reflective light collection. The solar active heat storage and release system comprises a solar collector, a hot water storage tank, a water feeding pipe, a water return pipe and a submersible pump, the solar collector is positioned on the inner side of the back wall, and a heat collecting surface faces the light collection roof. The active light collection and heat storage type sunlight greenhouse has advantages that by active sunlight collection, the sunlight utilization capacity is increased; by active heat storage and release, light collection and heat preservation performances of the sunlight greenhouse can be improved, uniformity of alight environment is improved, and annual efficient production of the sunlight greenhouse is benefited.

The invention belongs to the field of photocatalytic materials, and particularly relates to a double-doped lanthanum fluoride/attapulgite upconverting composite photocatalytic material and a preparation method and application thereof. The preparation method comprises the following steps: adding La(NO3)3.6H2O, Tm(NO3)3.6H2O, Yb(NO3)3.5H2O, NH4F and hydrochloric acid-modified ATP into deionized water respectively for dissolving, magnetically stirring for 30min for fully mixing, and adjusting the pH value of a system to 4-5; then, transferring to a microwave hydrothermal kettle for a reaction, reacting for 1-2h at the set power of 400W and the set temperature of 160-200 DEG C, centrifuging a prepared sample, washing by using deionized water, then drying the sample, and grinding to obtain a ytterbium-doped and thulium-doped lanthanum fluoride/attapulgite upconverting composite photocatalytic material. The composite photocatalytic material is applied to simulation of photocatalytic gasolinedenitrification, and the denitrification rate can reach 85% after 3h light irradiation.

The invention relates to a movable solar cell charging pile which comprises a framework, a solar cell module, a photo-voltaic controller, a storage battery, a power supply unit and a moving unit. The solar cell module is installed on the framework. The photo-voltaic controller and the storage battery are contained in the framework. The power supply unit is used for supplying power to equipment. The moving unit is installed on the framework to make the charging pile move. Light energy is converted into electric energy through the solar cell module, then the electric energy is stored in the storage battery through the photo-voltaic controller, and the electric energy stored in the storage battery supplies power through the power supply unit. The charging pile can be moved everywhere conveniently, and is high in efficiency at various angles and in various directions.

The invention provides thin film solar cells and preparation methods thereof. The thin film solar cell includes a transparent electrode, an electron transfer layer, a perovskite light absorbing layer,a hole transport layer, and a metal electrode which are sequentially are arranged in a laminated manner, wherein the transparent electrode is provided with multiple grooves disposed at intervals. Through arrangement of the grooves in the battery, light absorption of the transparent electrode can be inhibited, and at the same time, obvious resistive loss can not be produced, thereby being capableof improving the utilization rate of sunlight, and the energy conversion efficiency of the battery is improved.

The invention relates to a novel self-illuminating solar advertising plate system capable of generating electricity. The system consists of a transparent thin film solar battery panel and a rare-earth ternary to hexahydroxy compound layer which is plated on the surface of the solar battery panel, wherein infrared light is converted into visible light through the rare-earth ternary to hexahydroxy compound layer; and the visible light is irradiated onto the transparent thin film solar battery panel to generate electricity. According to the self-illuminating solar advertising plate system capable of generating electricity, the infrared light which penetrates through the transparent thin film solar battery panel and is wasted previously is converted into the visible light through the rare-earth ternary to hexahydroxy compound layer, the visible light can be used for generating electricity, and the corresponding pattern can be displayed according to the outline of the plated rare-earth ternary to hexahydroxy compound layer, so that the generating efficiency and the sunlight utilization rate of a transparent thin film solar battery are greatly improved, and the self-illuminating solar advertising plate system can serve as an advertising plate.

The invention discloses a two-degree-of-freedom photovoltaic power generation device for automatically tracking sunlight and a tracking method. The problem of single position of the battery panel is overcome as the solar panel is capable of tracking the position of the sun. At the beginning, the device is initialized, a photosensitive element provides the collected data to a single chip, the single chip receiving the data signal runs the program and controls a first stepping motor and a second stepping motor that are electrically connected to make the worm and the second worm rotate to drive the transmission main shaft to rotate, so that the solar panel rotates and can receive the maximum illumination. The stepping motor and worm gear set used by the invention for angle adjustment is capable of realizing precise angle control and self-locking of the corresponding rotation direction, and preventing the orientation of the solar panel from being arbitrarily changed due to external force factors. The photosensitive member of the invention is capable of accurately determining the direction of the sun light and automatically adjusting the orientation of the solar panel to be the same asthe direction of the sunlight.

The invention relates to a preparation method and application of a tungsten sulfide quantum dot and noble metal nanoparticle co-modified bismuth oxybromide composite material, and belongs to the technical field of photocatalysts. The preparation method comprises the following steps: preparing bismuth oxybromide with the uniform size from bismuth nitrate and potassium bromide through a solvothermal method; adding bismuth oxybromide into a noble metal salt solution, and reducing to obtain noble metal loaded bismuth oxybromide; pretreating tungsten sulfide to obtain a tungsten sulfide quantum dot solution; and adding the noble metal-loaded bismuth oxybromide into the tungsten sulfide quantum dot solution, and stirring at room temperature to obtain the tungsten sulfide quantum dot and noble metal nanoparticle co-modified bismuth oxybromide composite material. The tungsten sulfide quantum dot and noble metal nanoparticle co-modified bismuth oxybromide composite photocatalyst prepared by the invention has good performance in the aspect of photodegradation of organic pollutants, can be widely applied to the fields of removal of organic pollutants in catalytic wastewater, reduction of heavy metal ions and the like, and greatly widens the application range of bismuth oxybromide and tungsten sulfide.

The invention relates to a MoO3-x nanobelt material for one-dimensional plasma resonance absorption regulation and control and an application thereof. The material comprises a one-dimensional MoO3-x (x is greater than less than1) nanobelt with an oxygen vacancy defect and a carrier for loading the nanobelt. The macromolecules such as PEG (polyethylene glycol) are used as a surface protection ligand and a weak reducing agent, the oxygen defect state MoO3-x is obtained through reduction, meanwhile, the one-dimensional strip-shaped morphology is kept, and strong plasma absorption matched with sunlight in the full spectrum range is obtained by means of oxygen vacancy defects and MoO3-x nanoribbons; and the one-dimensional MoO3-x nanobelt with plasma absorption is dispersed in deionized water to obtain a dispersion liquid, then loading the dispersion liquid on the surface of the carrier, and drying is carried out to obtain the MoO3-x nanobelt photocatalyst. The MoO3-x nanobelt material hashigh water evaporation efficiency and long cycle life, and has great application value in the fields of sea water desalination, sewage purification and the like.

The invention provides a preparation method of a titanium oxide film and a titanium oxide film. The preparation method comprises the following steps: 1) preparation of titanium oxide precursor; and 2) film coating and after-treatment. The preparation method is simple in preparation technique and can implement large-scale production.