122 results about "Photocatalytic coating" patented technology

The invention provides a sintered hollow batten for buildings and a preparation method, and belongs to the technical field of novel wall materials, the sintered hollow batten for buildings comprises the following raw materials: high-calcium fly ash, construction waste recycled aggregate, clay, sulphoaluminate cement, a foaming agent, reinforced fibers and an additive; wherein the particle size of the construction waste recycled aggregate is 0.5-5mm, and the construction waste recycled aggregate is subjected to plasma activation treatment; a nano TiO2 photocatalytic coating is loaded on the surface of the construction waste recycled aggregate; the reinforced fibers are composite fibers of basalt fibers and polypropylene fibers, and the mass ratio of the basalt fibers to the polypropylene fibers is (1: 1)-(1: 2). According to the sintered hollow batten for the building, the building waste recycled aggregate subjected to plasma activation treatment is adopted, and the nano titanium dioxide photocatalytic coating is loaded, so that the bonding strength of the aggregate is greatly improved, and the hollow batten is endowed with the function of degrading pollutants such as formaldehyde.

The intelligent self-cleaning modular bag filter comprises a filter body, a water inlet is formed in the upper part of the filter body, and a water outlet is formed in the lower part of the filter body; a filter basket is arranged in the filter body, a filter bag is sleeved with the filter basket, a plurality of positioning hooks are arranged on the outer wall of the filter basket, an opening is formed in the lower portion of each positioning hook, a plurality of elastic pull belts are arranged on the outer surface of the filter bag, the elastic pull belts can penetrate out of the openings and are wound on the positioning hooks to be fixed, and the filter bag comprises a plurality of filter layers which are sequentially arranged from inside to outside. A photocatalytic coating is arranged on the innermost filter layer; a plurality of transparent covers which are arranged around the center of the filter body at intervals are arranged on the outer wall of the filter body, UV lamp modules are arranged on the outer sides of the transparent covers, and the UV lamp modules are detachably connected with the filter body. According to the invention, the filtering precision and the filtering efficiency can be improved, the maintenance is simple and convenient, the service life of the filter bag is long, the filter bag is not easy to block, and self-cleaning can be realized.

The invention discloses a preparation method of a bottom mud derived photocatalytic coating ecological bank protection building block in the field of ecological bank protection materials, which comprises the following steps: dry-mixing and wet-mixing cement, clay, pretreated bottom mud and microspheres, pouring into a customized steel mould in which silica optical fibers are embedded, compacting, moisturizing and curing, and then carrying out standard curing; secondly, the pretreated bottom mud reacts with acid to generate a metal oxide precursor, the metal oxide precursor is compounded with nitrogen-doped carbide, microspheres are added to prepare a composite catalyst, and the composite catalyst is sprayed on the surface of a base body in a layered mode after ultrasonic dispersion to form a photocatalytic coating; performing plasma treatment on the quartz optical fibers, performing latticed arrangement, dispersing the tail ends in a fan shape, and coating fluorescent powder and curing resin to form a light guide conversion layer; and finally, performing microwave irradiation on the cured building block to strengthen interface bonding and catalytic activity. According to the method, the problem that the coating falls off is solved through high-valued utilization of the bottom mud, efficient degradation of pollutants by the photocatalytic coating, optical fiber light guide enhanced light utilization and microsphere materials, and the resource utilization efficiency and environmental benefits are remarkably improved.

The invention discloses tripterygium wilfordii glass aerolite energy drinking water and a preparation method, and belongs to the technical field of drinking water preparation, and the tripterygium wilfordii glass aerolite energy drinking water comprises a drinking water filtering material prepared from tripterygium wilfordii glass aerolite, a drinking water treatment material prepared from tripterygium wilfordii glass aerolite and purified water; the preparation method comprises the following steps: crushing tripterygium wilfordii glass aerolite, dividing the crushed tripterygium wilfordii glass aerolite into two parts, coating a titanium dioxide photocatalytic coating on the surface of one part, curing, filling a filter cartridge, and packaging to obtain a drinking water filter material, coating a medical stone composite coating on the surface of the other part, and curing. The drinking water is filtered and purified and the water quality is adjusted through the drinking water filtering material and the drinking water treatment material, so that the drinking effect of the drinking water is improved.

The utility model discloses equipment for treating sewage containing high-molecular compounds by utilizing a photocatalysis technology, which comprises an intelligent power supply cabinet, a control system and a reactor equipment unit module, a photocatalysis reactor is arranged in a cabinet body of the reactor equipment unit module, a plurality of photocatalysis units are arranged in the photocatalysis reactor, and the photocatalysis units are connected with the intelligent power supply cabinet. Each photocatalytic unit comprises a plurality of photocatalytic tubes which are mounted in parallel, a photocatalytic coating is arranged on the outer surface layer of each photocatalytic tube and adopts a polymer semiconductor g-C3N4 coating, and the reactor equipment unit modules can be randomly matched and combined according to the sewage treatment capacity. All reactor equipment unit modules are connected with the control system. The whole set of equipment is simple and convenient to operate, small in occupied area, low in energy consumption, good in treatment effect, high in intelligent degree and extremely high in modularization degree, can be randomly matched and combined according to the sewage treatment capacity, does not need human participation, and saves the labor cost.

The invention discloses a photocatalytic coating based on a zinc sulfide / sepiolite composite material as well as a preparation method and application of the photocatalytic coating. According to the coating, a zinc sulfide / sepiolite composite material serves as a core functional component, a polymer emulsion base material, an auxiliary anion excitation material, an environment-friendly additive system and the like are combined, and efficient degradation of indoor pollutants and lasting release of negative oxygen ions are achieved through a multi-phase synergistic effect mechanism; according to the present invention, the formaldehyde decomposition rate can be significantly increased to more than 90%, the negative oxygen ion release concentration can achieve 3000-10000 / cm < 3 >, and the diversification requirements of people on the indoor air quality improvement can be met due to the radioactive concern and the light dependence of the traditional technology.

The invention provides an N-doped TiO2-BiVO4 heterojunction photocatalytic coating as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. Nitrogen doping is achieved through nitrogen source pyrolysis, an N-doped Bi-Ti heterojunction is formed, the molar ratio of Bi to Ti can be optimized, a tight heterojunction interface is formed, a light absorption edge is subjected to red shift to 600 nm, the carrier separation efficiency is improved, N doping is introduced into an intermediate energy level, the light response range is widened through BiVO4, the net degradation rate of formaldehyde within 24 hours reaches 78% through cooperation of the two, and the light response range is widened through BiVO4. Meanwhile, the problems that an existing photocatalytic coating is low in visible light utilization rate and poor in adhesive force are solved.

The application provides a kind of urban self-purification enhancement method based on polyenergy laser in-situ modification building outer wall catalytic coating, the urban self-purification enhancement method includes: using polyenergy laser to in-situ scanning on the photocatalytic coating on building outer wall, induce the local high temperature field with temperature greater than 900 DEG C to form on the surface of the photocatalytic coating, make the lattice reconstitution of catalytic material in photocatalytic coating.The urban self-purification enhancement method, by using polyenergy laser in-situ scanning, control the temperature of local high temperature field formed, laser scanning speed and single point irradiation time, in the case of not damaging substrate, the regeneration of aging photocatalytic coating on building outer wall is realized;In addition, the urban self-purification enhancement method also has the advantages of low cost, wide application range and on-site operation, and has broad application prospect.

A glass article comprising a photocatalytic coating including a titanium nitride layer and an outer titanium oxide layer, preferably at least partially in anatase form, said article being configured to impart a blue colour in transmission to a multiple glazing unit in which it constitutes the outer face, said multiple glazing unit further comprising a low-emissivity coating on another face of said multiple glazing unit, in particular face 2 or 3.

The invention discloses a composite waterproof wall surface construction method, structure and construction device, and relates to the technical field of constructional engineering waterproofing, and the method comprises the steps that a crack distribution thermodynamic diagram of a wall surface base layer is obtained; based on the crack distribution thermodynamic diagram, nanometer modified polymer cement mortar is laid to construct a base layer reinforcing layer; paving an intelligent polymer self-adhesive film coiled material on the base layer enhancement layer to construct a waterproof main layer; the waterproof main layer is coated with sealant to form a sealing reinforcing layer; and a photocatalytic coating is sprayed on the sealing reinforcing layer to form a protective surface layer. The multi-layer composite waterproof structure is constructed, the waterproof performance, durability and environmental protection performance are considered, the compressive strength is improved through the nano-modified mortar, the temperature-sensitive self-adhesion coiled material adapts to the more severe temperature, automatic construction equipment is adopted, manual errors are reduced, and materials and the technology are optimized so as to cover more scene requirements.

The utility model discloses a photocatalysis disinfection lamp, particularly relates to disinfection sterilization equipment technical field, including lamp, first photocatalysis coating and second photocatalysis coating, lamp includes lamp shade, the outer side wall of lamp shade is fixedly paved with first photocatalysis coating, the outside of first photocatalysis coating is fixedly paved with second photocatalysis coating, and the lamp shade is fixedly paved with second photocatalysis coating. The first photocatalytic coating is made of titanium dioxide, and the second photocatalytic coating is made of carbon nitride or copper. According to the utility model, the photocatalytic performance can be improved, the harm to a human body is reduced, and the integration of illumination and disinfection is realized.

The present invention provides a sol-gel photocatalytic clear coating composition comprising: (a) at least one aqueous solvent; (b) at least one photocatalyst precursor (TTIP); (c) at least one nonionic surfactant; (d) at least one epoxy silane; (e) at least one chelating agent; (f) at least one inorganic acid; (g) at least one inorganic salt; such compositions can be used with conventional means such as spray coatings, and ensure highly transparent photocatalytic coatings of very low thickness that can be applied on several substrates, which are stable over time, also have good weatherability, and have a relatively small amount of photocatalyst, which can be applied over time. And generally less than 10 wt%.

An air purification element (1) is described, the air purification element (1) comprising a printed circuit board (2) and a plurality of light sources (3) applied and electrically connected to said printed circuit board (2). The air purification element (1) further comprises a photocatalytic coating (4) applied in direct contact at least on the plurality of light sources (3).

This invention provides an N-doped TiO₂ 2 -BiVO 4 This invention relates to heterojunction photocatalytic coatings, their preparation methods, and applications, belonging to the field of photocatalytic materials technology. The invention achieves nitrogen doping through nitrogen source pyrolysis, forming a N-doped Bi-Ti heterojunction. Furthermore, by optimizing the Bi:Ti molar ratio, a tight heterojunction interface can be formed, redshifting the light absorption edge to 600 nm and improving carrier separation efficiency. N doping introduces intermediate energy levels, resulting in BiVO₄… 4 By broadening the light response range, the two work together to achieve a net formaldehyde degradation rate of 78% in 24 hours, while also solving the problems of low visible light utilization and poor adhesion of existing photocatalytic coatings.

The invention discloses an efficient antibacterial coating based on hexagonal boron nitride and a preparation process of the efficient antibacterial coating, and belongs to the field of antibacterial coatings. The coating is prepared by uniformly mixing h-BN micron particles with the particle size of 2-10 microns and h-BN nano particles with the particle size of 20-500 nm serving as core antibacterial components with auxiliary materials such as an adhesive, deionized water, a suspending agent, a dispersing agent and a defoaming agent. By innovatively adopting a nanoscale h-BN material, the product realizes the following technical breakthroughs: the antibacterial efficiency is remarkably improved; the environment-friendly characteristic is realized; the environmental stability is excellent; and the application adaptability is wide. Compared with the traditional silver-based, copper-based and other metal ion type antibacterial coatings, the product avoids the risk of metal ion migration, solves the technical bottlenecks of poor temperature resistance of an organic antibacterial coating and strong light dependence of a photocatalytic coating, and has important industrial application value in the fields of medical equipment, building decoration and the like.

This invention discloses a fresh air device with ultraviolet light air sterilization, belonging to the interdisciplinary field of air purification technology and fluid dynamics. The device includes an outer shell with an inner wall coated with an ultraviolet reflective layer; the interior is divided sequentially along the airflow direction into an air intake pretreatment section, a core reaction layer, and a terminal protection and exhaust layer. The core reaction layer contains alternating ultraviolet light sources and porous ceramic carriers coated with a nano-photocatalytic coating, and is equipped with inclined guide plates. When a fan drives airflow through the device, the reflective coating reflects ultraviolet light multiple times to the reaction zone, eliminating blind spots, and the guide plates force the airflow to form a non-linear path, extending the residence time. This invention solves the problems of low light energy utilization and incomplete sterilization caused by airflow short-circuiting in existing technologies through the synergistic optimization of the light field and flow field, significantly improving the microbial inactivation efficiency per unit volume, and is suitable for high-cleanliness environments such as hospitals and laboratories.

The present invention provides a gas phase sterilization method of a bismuth tungstate photocatalytic coating coupled with a three-dimensional fiber filter material, belonging to the technical field of chemical methods and air sterilization. The gas phase sterilization reactor comprises: a cavity defining the gas phase sterilization reactor; a Bi coated on the inner wall of the cavity; 2.15 WO6 photocatalytic coating, a three-dimensional fiber filter material fixed on the inner wall of the cavity and covering the entire cross-section of the cavity, the three-dimensional fiber filter material having a tree-like structure distributed along the air flow direction; and a 2.15 The WO6 photocatalytic coating provides the ultraviolet light source for ultraviolet light irradiation. Under ultraviolet light irradiation, Bi 2.15 The WO6 photocatalytic coating produces active substances that in situ catalyze the moisture in the air of the gas phase sterilization reactor. The produced hydrogen peroxide is captured and dispersed on the tree-like structure surface of the three-dimensional fiber filter material, thereby utilizing ultraviolet light irradiation, photocatalytic reaction and coupled three-dimensional fiber filter material filtration to achieve gas phase sterilization.

The utility model discloses a novel microalgae air purification oxygenation device which comprises a shell, a modular filter chamber and a microalgae incubator, wherein the modular filter chamber and the microalgae incubator are arranged in the shell; the shell is provided with an air outlet and an air inlet; the modular filter chamber comprises a plurality of filter layers and a photocatalyst coating purification chamber; the microalgae culture device comprises a microalgae culture solution water tank, a fan case, an aeration head and a liquid discharge pipe, the bottom of the microalgae culture solution water tank is sealed, and the top of the microalgae culture solution water tank is communicated with the air outlet; a light source is arranged at the bottom of the microalgae culture solution tank; the fan case is provided with a centrifugal fan, the aeration head is arranged in the microalgae culture solution water tank and is communicated with the fan case through an air pipe, and the fan case is communicated with the photocatalyst coating purification chamber; the bottom of the microalgae culture solution water tank is communicated with a liquid outlet formed in the lower part of the shell through a liquid outlet pipe. The internal structure is optimized, microalgae culture, microalgae purification, filtration, photocatalyst purification and the like are combined, microalgae air purification is achieved, and the air purification effect is improved.

The utility model discloses a convex rib PVC (polyvinyl chloride) spiral pipe, which relates to the technical field of spiral pipes, and comprises a spiral pipe body, the end part of the spiral pipe body is fixedly connected with a butt joint mechanism, the spiral pipe body comprises an anti-crack outer layer, and the spiral pipe body is sequentially provided with the anti-crack outer layer, an inner layer, an antibacterial layer and a noise reduction layer from outside to inside. By arranging the radial supporting ribs and the transverse supporting ribs, the external pressure resistance can be improved, the hollow layer is filled with a sound absorption material, noise is reduced, the antibacterial layer is made of a PVC material added with a silver ion antibacterial agent, the inner wall of the antibacterial layer is coated with a thick nanometer titanium dioxide photocatalytic coating, microorganism breeding on the inner wall of the pipeline is inhibited, organic pollutants are decomposed, and the pipeline is protected from being damaged. The noise reduction layer is made of rubber materials and absorbs vibration noise generated by water flow impact, the spiral grooves are formed in the inner ring face of the noise reduction layer, the spiral grooves and the spiral convex ribs form a three-dimensional flow guide network, water flow resistance can be reduced, and the incrustation attachment probability is reduced.

The utility model discloses a protective screen self -cleaning structure relates to protective screen technical field, wherein, protective screen self -cleaning structure includes the net body, the net body outside is equipped with photocatalytic layer, the outside of photocatalytic layer is provided with the reinforcing layer, the outside of reinforcing layer is equipped with water -repellent layer. The utility model discloses a technical scheme, the photocatalytic coating receives illumination to activate photocatalytic reaction, decomposes organic matter pollutant, reduces the adhesion of pollutant, the reinforcing layer as intermediate layer, plays the role of protection photocatalytic coating, promotes integral wear resistance and the adhesion function, after water drop drops on water -repellent layer, can be convenient water drop self -roll down, realizes self -cleaning function, on the whole, can realize the self -cleaning function of protective screen through sunlight and rainwater.

A water supply tank with self-cleaning and sterilizing functions comprises a water tank body used for containing water, a water inlet pipe and a water outlet pipe are connected to the outer portion of the water tank body, a plurality of ultraviolet lamp tubes are inserted into the water tank body, and the inner side tank wall of the water tank body is coated with a photocatalytic coating. A partition plate capable of dividing an inner cavity of the water tank body into mutually isolated sub-cavities is further arranged in the water tank body, any sub-cavity is connected with the water inlet pipe and the water outlet pipe through a branch pipe and a corresponding switch valve, and the ultraviolet lamp tube is arranged in any sub-cavity. The double functions of photocatalytic self-cleaning of the inner wall of the water tank body and disinfection and sterilization of stored water can be achieved, and ozone peculiar smell is avoided.

The invention discloses photocatalytic composite slurry, a photocatalytic air purification exterior wall coating and a preparation method thereof, and belongs to the technical field of photocatalytic coating preparation. According to the invention, a specific photocatalytic composite material is compounded with silica powder and an anti-ultraviolet assistant to prepare the photocatalytic composite slurry. By adding the silica powder, the agglomeration of the nano titanium dioxide can be effectively inhibited, the sedimentation can be prevented, and the storage stability and the photocatalytic efficiency of the slurry can be obviously improved; by adding the anti-ultraviolet assistant, part of ultraviolet radiation is shielded, and the light corrosion degradation of the photocatalyst is slowed down. After the photocatalytic composite slurry is introduced into the exterior wall coating, the exterior wall coating has high-efficiency air purification rate, the artificial weathering aging resistance of the exterior wall coating can be remarkably prolonged, and the long-term outdoor use requirement is met.

This invention relates to the field of ultraviolet light application technology, specifically to a photocatalytic honeycomb aluminum plate purification module, comprising a substrate, circuitry, a UVA LED light source, and a photocatalytic honeycomb aluminum plate. The UVA LED light source employs a specific emission angle and spacing, and a strip-shaped hollow area with a width of 3-7mm and a length of 13-18mm is set on the substrate with a thickness of 2.0-2.5mm to form a mesh-like ventilation channel. This design greatly reduces airflow resistance while ensuring structural strength and circuit integrity, and achieves efficient heat dissipation by utilizing the heat conduction of the substrate and air convection in the hollow area. The module can be tightly attached to the end face of the photocatalytic honeycomb aluminum plate, allowing ultraviolet light to uniformly irradiate the photocatalytic coating on the inner wall of the channel at a wide angle, generating a strong oxidizing substance to decompose organic pollutants in the air, significantly improving excitation uniformity and purification efficiency, and achieving integrated low-resistance, high-uniformity, and long-life characteristics.

The invention provides a wine liquid treatment device and method based on ultraviolet light catalysis. The wine liquid treatment device based on ultraviolet light catalysis comprises a container body used for containing wine liquid, and a photocatalytic coating is arranged on the inner wall of the container body; the ultraviolet light source is arranged at the top of the container body and is used for irradiating the photocatalytic coating and catalyzing the photocatalytic coating to generate an active substance with strong oxidizing property; the stirring device is arranged in the container body and is used for enabling the wine liquid to flow; the control ends of the ultraviolet light source and the stirring device are respectively connected with the control module, and the control module controls the work of the ultraviolet light source and the stirring device. According to the invention, flavor substances in the wine can be effectively regulated and controlled; meanwhile, flowing of the wine is promoted through the stirring device, and therefore the regulation and control speed of the wine is increased.

To provide a photocatalyst coating film that utilizes a photocatalytic material to impart high antibacterial-antiviral capability to a product surface.SOLUTION: A photocatalyst coating film contains a photocatalytic material and has a surface zeta potential of +5 mV or more.SELECTED DRAWING: None

This invention relates to a wastewater treatment system, comprising a pretreatment device, a three-dimensional electrode catalytic oxidation device, a strong oxidation device, and a separation device. The three-dimensional electrode catalytic oxidation device is connected to the pretreatment device. The three-dimensional electrode catalytic oxidation device includes a housing, an anode electrode plate, a cathode electrode plate, a particle electrode assembly, and a light source assembly. The anode and cathode electrode plates are disposed within the housing, and the particle electrode assembly is disposed between the anode and cathode electrode plates. A accommodating space is provided between the anode, cathode, and particle electrode assembly. The light source assembly is disposed within the accommodating space. The surfaces of the cathode electrode plate and the particle electrode assembly are coated with a photocatalytic coating containing a photocatalyst. The strong oxidation device is connected to the three-dimensional electrode catalytic oxidation device, and the separation device is connected to the strong oxidation device. This invention is highly adaptable and can be applied to the treatment of various types of pollutants.

A photocatalytic coating liquid of the disclosure contains: 1.0 wt. % or more and 5.0 wt. % or less of photocatalytic particles; 0.05 wt. % or more and 0.5 wt. % or less of a binder; a metal ion; and an aqueous dispersion medium, wherein the photocatalytic particles include tungsten oxide particles, an average particle size of primary particles is 10 nm or more and 50 nm or less, the average particle size being converted from a BET specific surface area of the photocatalytic particles using a true spherical model, and an average particle size D50 of secondary particles of the photocatalytic particles is 600 μm or more and 1000 μm or less.

The invention discloses a piezoelectric enhanced photocatalytic coating based on a BaTiO3 / BiOCl nanocomposite and a preparation method and application thereof.BaTiO3 and BiOCl are compounded to form a p-n junction, the compounding probability of electron-hole pairs can be reduced, and the photocatalytic degradation capacity can be effectively improved by introducing external field mechanical energy; the BaTiO3 / BiOCl nano composite material is prepared into paint to be coated on the surface of the cement-based material to form a coating with self-cleaning performance, so that the durability of the cement-based material can be improved on the premise of not changing the internal structure of the cement-based material, and the service life of the cement-based material is prolonged; meanwhile, under the driving of mechanical energy such as wind energy, tidal energy and ultrasonic waves in the environment where the cement-based material is located, the BaTiO3 / BiOCl nano composite material can release electrons and holes and convert the mechanical energy into electric energy, so that the photocatalytic degradation capacity of the coating is further improved, degradation of pollutants in surrounding water is accelerated, and the photocatalytic degradation efficiency of the coating is improved. And the self-cleaning effect on the self surface is improved.

The application provides a long-acting photocatalyst coating, a manufacturing method and application thereof. The long-acting photocatalyst coating comprises a substrate, an inorganic coating arranged on the surface of the substrate, and a nano-titanium oxide coating arranged on the surface of the inorganic coating. The preparation steps comprise: arranging the inorganic coating on the surface of the substrate; arranging the nano-titanium oxide coating on the surface of the inorganic coating when the inorganic coating is in a wet state; the nano-titanium oxide coating is a water or alcohol dispersion of nano-titanium oxide; the nano-titanium oxide coating is fused with the inorganic coating, dried, and the long-acting photocatalyst coating is obtained. The technical problem to be solved by the application is how to uniformly disperse nano-titanium oxide particles on the surface of an object, so that the long-acting photocatalyst coating has photocatalyst function and is durable and not easy to fall off, thereby being more suitable for practical use.