86results about How to "Photocatalytic" patented technology

The invention relates to modified tussah silk fabric with functionalized nanometer chitosan and nanometer titanium dioxide. The modified tussah silk fabric is prepared by the steps in sequence: weaving the tussah silk fabric by utilizing tussah filament, preparing finishing liquor and finishing tussah silk fabric; and the technical problems that the existing textile materials in the modification technology can not effectively improve the properties that the tussah silk fabric has damage to the environment, is easy to wrinkle, not anti-bacterial and easy to shrink, has poor dyeing property, poor comfortableness and function, and the like can be solved, the comprehensive properties that the tussah silk fabric is anti-wrinkle, soft, anti-bacterial, shrink-proof, self-cleaning and ultraviolet ray-resistant, as well as the adsorption efficiency of dye, and the like can be improved and enhanced, and the tussah silk fabric has the technical benefits of being lower in preparation cost, simple in process, environment-friendly and easy to realize, etc.

The invention discloses a method for preparing an inorganic particle / epoxy resin super hydrophobic film. The method is characterized by comprising the following steps: (1) preparing amination nano silica and nano titanium dioxide particle; (2) preparing coating sol; (3) coating the sol on a substrate material; (4) performing post-treatment on substrate material, and finally preparing the inorganic particle / epoxy resin super hydrophobic film. The method is simple in process and good in repeatability, and the prepared coating has excellent super hydrophobicity and self-cleaning property and is suitable for industrial production of super hydrophobic paint.

The present invention discloses a kind of inorganic disinfectant and its preparation process. The inorganic disinfectant consists of tourmaline 50-90 weight portions; photocatalytic material or nanometer TiO2, ZnO, CdO or SnO2, preferably nanometer anatase TiO 25-25 weight portions; compound RE salt or RE oxide of La, Ce, Nd, Sm, Pr, Eu or Y as the synergistic promoter 4-30 weight portions; and soluble metal oxide or metal salt 1-2 weight portions. The inorganic disinfectant has photocatalytic effect, negative ion releasing function, far infrared function and metal ion sterilization effect, so that it has synergistic disinfecting effect.

The present invention relates to a method for preparing tempered anti-bacterial self-cleaning glass. Said method utilizes one-step heat treatment process to make the titanium dioxide base film coated or plated on the glass surface be sintered and converted into anatase crystal type to implement glass tempering so as to obtain the transparent tempered bacteria-killing self-cleaning glass product with good photocatalytic activity photosuperhydrophilicity and anti-bacterial function. Besides, said invention also provides its application range.

The photocatalyst beautifying and whitening toothpaste includes photocatalyst titania solution 18.0-30.0 weight portions, glycerin 10.0-20.0 weight portions, calcium peroxide powder 1.0-8.0 weight portions, calcium carbonate 15.0-30.0 weight portions, sodium lauryl sulfate 4.0-10.0 weight portions, silica 25.0-35.0 weight portions, flavoring matter 0.5-1.5 weight portions and hydrogen peroxide 1.0-8.0 weight portions. The preparation process includes mixing all the components inside one dry container. The photocatalyst beautifying and whitening toothpaste has photocatalytic effect, contains whitening factor, has beneficial negative ion effect, powerful friction and adsorption effect, excellent bacteriostasis and foaming property and obvious functions of cleaning teeth, whitening and preventing halitosis, dental diseases and eliminating tartar.

The invention discloses a low-temperature preparation method of a TiO2-based organic / inorganic compound photocatalysis flexible film. The method comprises the following steps of: adjusting the pH value of a water solution containing a titanium salt with inorganic alkali; dissolving a regular titanic acid precipitate with hydrogen peroxide to obtain a clear and transparent titanium peroxide solution, heating or adding a catalyst for removing free oxygen from a titanium peroxide solution; mixing the solution with a polymer emulsion to obtain uniformly-mixed compound material emulsion; and forming a film on the surface of an organic flexible substrate, and performing thermal treatment to form a film material with a photocatalysis performance. The TiO2-based organic / inorganic compound photocatalysis flexible film has multiple functions of photocatalysis, antibiosis and super hydrophilicity; and in addition to the formation of a film on the conventional rigid substrate, a very good film forming condition is created particularly on the organic flexible substrate due to the adoption of a low-temperature preparation process, so that the application field of the film is greatly expanded.

A microbe reduced and noble metal modified TiO2 catalyst for catalytic degradation of phenol has a formula No-La / TiO2, where No is Ag and / or Pd. Its preparing process includes such steps as calcining TiO2, ultrasonic dispersing, adding it into the bottle containing microbe R08 and SH10, dark culture, impregnating in the solution of nitrate or chloride of noble metal, laying aside, washing, putting it in flowing N2, and carrying the nano-particles of noble metal by the í‹anchoríŒ and reducing action of microbes.

The invention relates to the technical field of water pollution control, in particular to industrial heavy metal wastewater treatment method based on flocculation, flotation and sedimentation. The method includes an aeration treatment step, a PH value adjustment step, a flocculation step, an air flotation step and a sedimentation and filtration step. A flocculant is prepared in the steps that healthy water hyacinth plants as raw materials are modified by modification shell powder and chitosan, bonded with polyaluminum ferric chloride and finally mixed with nano-zinc oxide / carbon quantum dot complexing agents. According to the method, the water hyacinth plants serve as the raw materials, the cost is very low, heavy metal ions in wastewater can be effectively treated, no secondary pollutionis caused, and the processing effect is very stable.

The invention relates to a method for preparing a CNT / Fe3O4@ZnO one-dimensional nanocomposite by a polyol one-pot method. The method comprises the following steps: 1, weighing and then mixing a multiwall nanotube, ferric acetylacetonate and triethylene glycol, then carrying out ultrasonic dispersion on the mixture until the mixture is uniform, then introducing argon, then heating the mixture to the boiling point of triethylene glycol and then carrying out reflux; and 2, then cooling the product to the room temperature, then throwing zinc acetate, then slowing heating the mixture to the boiling point of triethylene glycol, then carrying out reflux, carrying out magnetic separation after cooling, washing the product with ethanol and drying the product to obtain the CNT / Fe3O4@ZnO composite. The composite is applied in the fields of photoelectric device assembly and photocatalysis.

The invention discloses preparation and application of a nitrate treatment agent. The preparation method includes: taking cotton as the template, using coprecipitation process to synthesize biomorphiczinc titanium iron ternary hydrotalcite, and conducting roasting in a muffle furnace so as to obtain the nitrate treatment agent. The invention also provides application of the nitrate treatment agent prepared by the method in treatment of nitrate wastewater. The nitrate treatment agent prepared by the method has good adsorption effect on nitrate and is easy to separate, and has simple and feasible regeneration method, thus having broad application prospects in the field of nitrate wastewater treatment.

The invention relates to modified tussah silk fabric with functionalized nanometer chitosan and nanometer titanium dioxide. The modified tussah silk fabric is prepared by the steps in sequence: weaving the tussah silk fabric by utilizing tussah filament, preparing finishing liquor and finishing tussah silk fabric; and the technical problems that the existing textile materials in the modification technology can not effectively improve the properties that the tussah silk fabric has damage to the environment, is easy to wrinkle, not anti-bacterial and easy to shrink, has poor dyeing property, poor comfortableness and function, and the like can be solved, the comprehensive properties that the tussah silk fabric is anti-wrinkle, soft, anti-bacterial, shrink-proof, self-cleaning and ultraviolet ray-resistant, as well as the adsorption efficiency of dye, and the like can be improved and enhanced, and the tussah silk fabric has the technical benefits of being lower in preparation cost, simple in process, environment-friendly and easy to realize, etc.

The invention relates to photocatalyst whitening toothpaste and a preparing method thereof and belongs to the technical field of photocatalysts. The photocatalyst whitening toothpaste comprises following components: 18.0-30.0 parts of a nanometer titanium dioxide photocatalyst solution, 10.0-20.0 parts of sorbitol having a weight concentration of 90%, 9% of glycerin, 1.0-8.0 parts of calcium peroxide powder having a purity of 80%, 15.0-30.0 parts of calcium carbonate, 4.0-10.0 parts of sodium laurylsulfate 25.0-35.0 parts of silicon oxide, 0.5-1.5 parts of a flavouring agent, 1.0-8.0 parts of hydrogen peroxide, fluoride and sodium benzoate.

The invention discloses a water-based wood coating with antibacterial, anti-fouling, mosquito-repellent and insect-repellent effects, and preparation method thereof. The water-based wood coating comprises, by weight, 24-30 parts of water-based polyacrylate, 7-12 parts of water-based polyurethane, 1.5-2.5 parts of water-based fluorocarbon resin, 0.5-0.8 part of a cosolvent, 3-6 parts of deionized water, 1.0-2.5 parts of silicone oil, 0.1-0.3 part of nanometer zinc oxide, 0.6-1.0 part of multiply modified nanometer titanium dioxide, 0.05-0.15 part of a surfactant and 0.6-1.8 parts of anhydrous ethanol. The water-based wood coating of the invention has good antibacterial, anti-fouling, anti-insect and mosquito-repellent effects; and a paint film formed by the coating also has good adhesion, toughness, water resistance, wear resistance, weather resistance and the like.

The invention relates to the field of agriculture and discloses an agricultural black polyethylene mulching film and a preparation method thereof. The agricultural black polyethylene mulching film comprises the following components: 75-85wt% of polyethylene, 4-6wt% of black master batch, 4-8wt% of polyvinyl alcohol, 4-8wt% of multifunctional master batch, 0.5-2.5wt% of a lubricant, 0.5-1.5wt% of doped nano titanium dioxide and 0.25-0.75% of a silane coupling agent. The agricultural black polyethylene mulching film is black and capable of shielding light, so that weeds cannot survive as photosynthesis is inhibited. The multifunctional master batch has functions of water retention, oxygen production and insect killing. In addition, a slow-release effect can be achieved for chemical oxygen producers and insect killing components, and active components can be continuously and stably released. The doped nano titanium dioxide has a photocatalysis property, and thus the mulching film can be slowly degraded. The preparation method disclosed by the invention is simple, reasonable, and applicable to large-scale production.

The invention discloses a preparation method and application of water-soluble titanium dioxide nanoparticles. According to the preparation method, beta-cyclodextrin is used as an initial reaction material, a macroinitiator is synthesized by means of modification, a multi-arm star-shaped block copolymer is prepared by using an atom transfer radical polymerization (ATRP) technology and a technologywhich combines ATRP with 'click' chemistry, and the water-soluble titanium dioxide nanoparticles with uniform sizes and good dispersibility are prepared by taking the multi-arm star-shaped block copolymer as a monomolecular micelle template on the basis of a solution phase synthesis method. The titanium dioxide nanoparticles prepared by the preparation method are stable in quality, uniform in particle sizes, and can be stabilized at a nanoscale; the properties of the titanium dioxide nanoparticles can be effectively enabled to be exerted. The surfaces of the titanium dioxide nanoparticles aremodified, so that the titanium dioxide nanoparticles can be enabled to be evenly dispersed in water, and an aggregation effect is further avoided.

The invention provides a self-cleaning composite material and a preparation method thereof, and relates to the technical field of materials. The composite material is prepared from the following components in parts by mass: 25-40 parts of polyurethane resin, 10-15 parts of nano-titanium oxide, 5-10 parts of yttrium oxide, 4-8 parts of alkali metal sulfonate, 6-12 parts of poly(meta-ethylene acid ester), 6-15 parts of nano-tungsten oxide, 4-10 parts of white carbon black, 3-8 parts of polyoxyethylene ether, 6-12 parts of magnesium oxide ceramic micro-powder, 6-15 parts of glass fiber, 5-10 parts of a curing agent and 12-22 parts of acetone. The self-cleaning composite material provided by the invention has the advantages of excellent photocatalysis performance, excellent self-cleaning performance, stable property, good weather tolerance and durability and excellent mechanical performance, and can be used as a surface coating material of metal or alloy materials.

The invention relates to a thulium doped titanium sol and a method for degrading textile organic dirt under visible light, wherein the method comprises the following steps of: doping lanthanide thulium by using tetrabutyl titanate as a precursor and adopting a sol-gel method to prepare the thulium doped titanium sol, shaking the thulium doped titanium sol in a shaking bath pot for a certain period of time, placing at room temperature and ageing; enabling the sol to be adsorbed onto fibers by adopting an immersion method, drying and baking to enable the thulium doped titanium sol to form a film on the surface of textile fibers. The thulium doped titanium dioxide sol has simple preparation method, low-temperature operation and visible light response; the consolidated textile can decompose the organic dirt covered on the consolidated textile under the visible light, and the degradation ratio can reach more than 90 percent.

The invention discloses an efficient composite inorganic antibacterial agent and a preparation method thereof, belonging to the technical field of nanomaterial preparation. The efficient composite inorganic antibacterial agent comprises the following components in parts by weight: 100 parts of palygorskite, 30-50 parts of a photocatalytic material, 3-5 parts of graphene, 2-8 parts of metal oxide and / or metal salt and 0.5-2 parts of polyquaternium. Palygorskite with a multi-channel structure is used as a carrier and undergoes microcosmic nanometer compounding with the graphene, so a palygorskite carrier and graphene can be kept in a highly dispersed state in the processing and using processes; meanwhile, the photocatalytic material with an antibacterial effect, the metal oxide and the metalsalt are added so as to prepare the novel composite inorganic antibacterial material with multiple synergistic functions including photocatalysis, electron migration wall breaking and metal ion antibiosis; and the contact area of antibacterial active components and bacteria can be increased through good dispersity of the agent, the antibacterial effect is achieved through synergism of the antibacterial components, and therefore, the effects of killing bacteria and efficiently inhibiting bacterial reproduction are achieved.

The invention discloses a nano composite stone material protection agent. A carbon nanotube-supported TiO2 / tourmaline nano-composite modifier is added, wherein the TiO2 particles can reduce the scattering intensity of long wave ultraviolet ray and absorb short wave ultraviolet ray; nano SiO2 particles can absorb and reflect the ultraviolet ray, wavelength being less than 400 nm, and infrared ray,wavelength being larger than 800 nm, both absorption rate and reflection rate reaching more than 70%, so that anti-aging effect of the protection agent is greatly enhanced; meanwhile, the nano-particles have photocatytic function, so that organics can be decomposed at high efficiency. The protection agent is higher than hypochlorous acid in sterilization effect and is significantly enhanced in anti-bacterial corrosion property and improved in self-cleaning performance and adhesion force. Meanwhile, the hardness, anti-scrubbing effect and anti-wearing effect of a coating layer are enhanced by means of the carbon nanotubes and nano SiO2.

The invention relates to the technical field of membrane separation, and provides a preparation method of an MOFs-PVDF composite ultrafiltration membrane with a sterilization function. The preparation method comprises the following steps of: adding an MOFs material into an aqueous solution containing an iron source and a silver source, and stirring and mixing to obtain a precursor solution; adding a sodium hydroxide solution into the precursor solution, stirring, introducing oxidizing gas, filtering and drying to obtain a modified MOFs material loaded with AgO and FeOOH; and adding hydroxyl-containing PVDF, a modified MOFs material and a pore-foaming agent into an organic solvent to prepare a membrane casting solution, applying the membrane casting solution, and carrying out gel curing in a non-aqueous coagulating bath to obtain the MOFs-PVDF composite ultrafiltration membrane with a sterilization function. The MOFs-PVDF composite ultrafiltration membrane prepared by the method is good in hydrophilicity and strong in anti-pollution capability, has sterilization and antibacterial functions, and can be applied to the field of water treatment.

The invention belongs to the field of special coating, and discloses antibacterial nanometer polyurethane emulsion with an air purification function. The antibacterial nanometer polyurethane emulsionis prepared from components including, by weight, isophorone diisocyanate (IPDI), polyether N-210, 2,2-dimethylolpropionic acid (DMPA), diethylene glycol (DEG), 3,5-tri-ethoxy s-triazine (TNO), acetone, dibutyltin dilaurate T-12, triethylamine, deionized water, wetting agents, nanometer silicon dioxide, nanometer titanium dioxide and nanometer zinc oxide. The invention further discloses a method for preparing the antibacterial nanometer polyurethane emulsion and carpentry paint with the antibacterial nanometer polyurethane emulsion. The antibacterial nanometer polyurethane emulsion, the methodand the carpentry paint have the advantages that the formaldehyde conversion of the antibacterial nanometer polyurethane emulsion and the carpentry paint with the antibacterial nanometer polyurethaneemulsion can reach 90% at least, and the hardness of paint films can reach 2.5 H.

The invention belongs to the technical field of road materials, and particularly discloses a road guardrail coating capable of effectively purifying automobile exhaust gas. By using waste shells as raw materials, micron-sized porous shell powder sol is obtained by calcination, micro-etching and dispersion; by combining nanometer titanium dioxide, nanometer titanium dioxide modified micron-sized porous shell powder gel particles are obtained. The surface-adsorbed nanometer titanium dioxide has a photocatalytic effect, and is also commonly used as nanometer negative ion powder in coatings; the internal micron-sized porous shell powder has good adsorption. The road guardrail coating with the nanometer titanium dioxide and the micron-sized porous shell powder gel particles not only has the good photocatalytic effect, but also can degrade organic matter adsorbed on the surface of the coating; at the same time, the surface of the coating has an adsorption effect on the pollutants in the air, so that the air pollutants are concentrated in the radiation range of the nanometer negative ions, and thus the purification effect of the nanometer negative ion powder in the coating on the air is increased.

The invention discloses a wooden product antibacterial finishing paint, relating to the technical field of coatings. The wooden product antibacterial finishing paint comprises the following components in parts by weight: 70-85 parts of water-soluble polyurethane emulsion, 8-12 parts of water-soluble amine resin, 0.05-0.1 part of nano silicon dioxide, 0.05-0.1 part of nano titanium dioxide, 0.1-1 part of a fluorocarbon modified acrylate leveling agent, 30-45 parts of hexamethylene diisocyanate, 5-8 parts of ethanol, 15-20 parts of a pigment, 2-5 parts of bentonite, 8-10 parts of silicon dioxide, 1-3 parts of silicone oil and 5-10 parts of water. Compared with an existing wood-ware finishing paint, the wooden product antibacterial finishing paint disclosed by the invention has a significant antibacterial effect, and the antibacterial rate can reach 100%.

The invention discloses a making method of a polyester-yarn plain-weave fabric. Polyester warp yarns undergo warping, sizing and denting and are interwoven with polyester weft yarns together according to 1 / 1 plain weave to produce the high-density plain-weave fabric. Sizing is performed by adopting titanium sol, the effect of making a fabric surface smooth can be played, and the defects of curve and tonal variation are not produced, so that the fabric has the soft and moist hand feeling of a wool fabric and a woven pile fabric. Dotted protrusions and recesses distributed between two warp-wise lines make the filament-yarn plain-weave wool-like fabric have the style of a jacquard fabric, and the quality of the fabric is improved.

The invention discloses an antibacterial finishing coat for wood products, relating to the technical field of coatings. The antibacterial finishing coat is prepared from the following components in parts by weight: 40-60 parts of an acrylic emulsion, 2-10 parts of modified rosin resin, 0.1-0.5 part of nano-zinc oxide, 0.1-1 part of fluorine-carbon-modified acrylate flatting agent, 20-30 parts of hexamethylene diisocyanate, 2-5 parts of ethanol, 5-10 parts of pigments, 2-5 parts of bentonite, 8-10 parts of silicon dioxide, 1-3 parts of mineral oil and 5-10 parts of deionized water. Compared with existing woodware finishing coats, the antibacterial finishing coat has the advantages that the antibacterial effect is obvious, and the antibacterial rate reaches 100%.

The present invention relates to a method for preparing tempered anti-bacterial self-cleaning glass. Said method utilizes one-step heat treatment process to make the titanium dioxide base film coated or plated on the glass surface be sintered and converted into anatase crystal type to implement glass tempering so as to obtain the transparent tempered bacteria-killing self-cleaning glass product with good photocatalytic activity photosuperhydrophilicity and anti-bacterial function. Besides, said invention also provides its application range.

The invention discloses a solar power and hydropower cogeneration system. The solar power and hydropower cogeneration system is mainly composed of a solar concentration catalyzing metal fuel cell stack, a tower type concentration bowl array, a layered groove disc concentration system, an embedded solar fiber distillation tower, a metal fuel regeneration electrolytic tank, a heat exchanger, a powerconverter and a control system, wherein the solar concentration catalyzing metal fuel cell stack is mainly composed of a metal anode, a diaphragm, a concentration catalyzing oxygen cathode, a cell case and the like; and the embedded solar fiber distillation tower is composed of a dark fiber yarn, a light guide fiber and transparent light emitting pipe, an overflow water distribution communicatingpipe, a liquidometer, a cobblestone, an extraction perforated pipe and the like. The invention further discloses a production method based on the solar power and hydropower cogeneration system. The solar power and hydropower cogeneration system and the production method are high in power generation efficiency, low in seawater desalination cost, good in water outlet quality, capable of saving energy and environmentally friendly.

The invention relates to a bismuth sulfide composite potassium tantalate niobate catalyst as well as a preparation method and application thereof. The general formula of the catalyst is x%Bi2S3 / KTa0.75Nb0.25O3, wherein x is the molar ratio of Bi2S3 to KTa0.75Nb0.25O3 in the catalyst, and x is greater than or equal to 0.1 and less than or equal to 5. The KTa0.75Nb0.25O3 material is applied to piezoelectric catalysis and photocatalytic nitrogen fixation, and N2 is catalytically reduced into ammonia under the action of ultrasonic vibration or illumination. Due to the loading of Bi2S3, the piezoelectric catalysis performance and the photocatalytic ammonia synthesis performance of the KTa0.75Nb0.25O3 are further improved.

The invention relates to a preparation method of antifouling self-cleaning ceramic and belongs to the technical field of ceramic preparation. The method includes steps of: mixing a plurality types ofpottery clay, as raw materials, with water to prepare pottery clay slurry; mixing the pottery clay slurry with egg white and active sludge for fermentation; mixing the fermented product, potassium thiocyanate, sodium pyrophosphate and sodium carboxymethylcellulose to obtain a ceramic base material; injecting the ceramic base material into a mould and performing compression moulding, and sinteringthe product to obtain pre-sintered ceramic; finally performing impregnation to the pre-sintered ceramic with a tetrabutyl titanate and ethanol mixture liquid, adding water and performing an ultrasonicreaction; and calcining the product to obtain the antifouling self-cleaning ceramic. The ceramic has great antifouling performance and has extensive application prospect.