47results about How to "Strong catalytic degradation function" patented technology

The invention discloses an environment-friendly composite calcium metasilicate plate and a preparation method thereof. The preparation method comprises the following step: coating a nanometer titania photocatalyst aqueous suspension on a base plate of the calcium metasilicate plate in a rolling coating or spraying coating manner to obtain the environment-friendly composite calcium metasilicate plate, wherein the base plate of the calcium metasilicate plate is prepared from a silicon material, a calcium material, reinforced fibers and assistants; the nanometer titania photocatalyst aqueous suspension comprises titanium dioxide powder with the fineness of not greater than 50nm, a surface active agent, an adhesive and water. According to the preparation method, the nanometer titania photocatalyst aqueous suspension is coated on the base plate of the calcium metasilicate plate to form a water-based film; the water-based film is coated on the surface of a base material and then dried to form a membrane which can be used for highly catalyzing and degrading under the effect of light, so that indoor formaldehyde can be absorbed and degraded, and the antibacterial effect is also improved.

The invention discloses a negative oxygen ion photocatalyst decomposition liquid for formaldehyde removal and a preparation method thereof. The liquid is prepared from 14 parts of a formaldehyde trapping agent, 3-5 parts of a nano photocatalyst, 3-5 parts of nano silver ions, 4-6 parts of negative ion powder, 6-10 parts of cellulose, 3-5 parts of ethanol, 0.3-0.7 part of essence and 75.3-80.5 parts of deionized water. The negative oxygen ion photocatalyst decomposition liquid for formaldehyde removal and the preparation method thereof have an excellent catalytic degradation function, can release negative oxygen ions for a long time and can thoroughly kill bacteria and microorganisms since the formaldehyde trapping agent, high-activity nano Ti02 and Ag+ with a high-efficiency sterilizationfunction are added. Harmful gas such as formaldehyde, benzene, VOC and the like brought by the bacteria, the microorganisms and decoration can be thoroughly caught and decomposed, spatial structures of organic molecules are changed and convert into tasteless and harmless molecules, negative oxygen ions are released, sterilization and disinfection are carried out, and therefore indoor air is thoroughly and effectively purified.

The invention discloses a chemical sewage treatment device and method. The device comprises a filtering device, a biomembrane cleaning plate, an induced draft fan, a sewage inlet, an air blower, a water pump and an UV irradiator; a grating plate is mounted in the filtering device; a flow guide hole is formed in a flow guide plate; the flow guide plate is fixed above the biomembrane cleaning plate; the filtering device is connected to the right side of the sewage inlet; an air bubble pipe is connected to the right end of the air blower; an exhausting pipe is connected to the inner side of the UV irradiator. According to the device, air blown in through the air blower is injected in an air bubble form through the air bubble pipe, so that the chemical sewage can be in full contact with the biomembrane cleaning plate, and as a result, the sewage can be fully treated, and the sewage treatment efficiency is increased; a filler plate is manufactured through a photocatalyst material which is high in catalyzing degrading function under the UV rays, and various bacteria in air can be eliminated, and moreover, toxic and harmful gas exhausted into the air can be degraded.

The invention relates to a photocatalytic compound exhaust gas treatment system. An exhaust gas collecting cover is connected with a spray tower, the rear part of the spray tower is connected with a photolysis oxidization catalysis device, and the rear part of the photolysis oxidization catalysis device is connected with an air inducing device; a first filter screen is arranged between the photolysis oxidization catalysis device and the spray tower to realize filtration, and a second filter screen is arranged between the photolysis oxidization catalysis device and the air inducing device to realize filtration; and a plurality of TiO2 filter screens and a plurality of UVC tubes and ozone generators are arranged in the photolysis oxidization catalysis device at intervals. A spraying technology is used to cool exhaust gas and remove one part of dusts in the exhaust gas, so primary purification and maintenance of cleanness of the UVC tubes are realized; a catalyst is arranged, so the photolysis oxidization efficiency is greatly improved under the catalysis of the catalyst; and high temperature exhaust gas or exhaust gas with complex components is cooled and washed, enters the photolysis oxidization device and undergoes secondary treatment, so disadvantages of single technologies are overcome.

The invention discloses a photo-oxygen catalysis waste gas treatment device. The photo-oxygen catalysis waste gas treatment device comprises an air inlet, a waste gas treatment furnace, an air pipe and a secondary waste gas treatment furnace, wherein the waste gas treatment furnace is arranged on one side of the air inlet; the upper part of the waste gas treatment furnace is connected with the air pipe, and the other end of the air pipe is connected with the secondary waste gas treatment furnace; a filter screen is arranged at the bottom end inside the waste gas treatment furnace; a molecule pulverizator is arranged above the filter screen; an ozone generator is arranged above the molecule pulverizator; a photolysis oxygenizer is arranged above the ozone generator; the air pipe is connected with the secondary waste gas treatment furnace through a blower; and a photocatalyst layer is arranged inside the secondary waste gas treatment furnace. The photo-oxygen catalysis waste gas treatment device is simple in structure and novel in design, poisonous and harmful gas in air can be effectively degraded, and the device also has the functions of formaldehyde removal, deodorization, pollution prevention, air purification and the like, the purification efficiency is high, the purification can be circulated, present requirements can be met, and the safety performance is high.

The invention discloses a novel air purifier for a desktop. The novel air purifier comprises a round base plate and a spherical shell which is arranged on the round base plate, wherein the round base plate and the spherical shell define an accommodating chamber; a singlechip microcomputer is arranged in the spherical shell; a fan, a negative ion generator, an air purification device and an annular humidification device are sequentially arranged in the spherical shell from bottom to top; air inlets are formed in the part, under the negative ion generator, of the bottom of the spherical shell; a plurality of air outlets are formed in the front side of the upper part of the spherical shell; the air outlets are through holes with openings facing the same side; and the singlechip microcomputer is also connected with an external direct current power supply. The air purifier has a simple structure, is reasonable in design, is small in size, is attractive in appearance, and also has effects of humidifying the air and purifying the air.

The invention discloses a production process of photocatalyst bacteriostatic and antibacterial textiles. The production process includes five steps, wherein a photocatalyst bacteriostatic and antibacterial solution is prepared from the components in parts by weight: 10-15 parts of a photocatalyst bacteriostatic and antibacterial agent, 90-120 parts of deionized water, 3-5 parts of a reinforcing agent and 4-6 parts of a toughening agent. The production process is scientific, reasonable, simple in steps, easy to operate and realize, the production efficiency of the photocatalyst bacteriostatic and antibacterial textiles can be effectively improved, meanwhile, the photocatalyst bacteriostatic and antibacterial textiles produced by the production process can effectively inhibit bacteria with long lasting and are clean and hygienic, under the action of ultraviolet light and visible light, a high catalytic degradation function can be produced, toxic and harmful gases in the air can be effectively degraded, a variety of bacteria can be effectively killed, and decomposing and harmless treatment can be carried out on toxin released by bacteria or fungi; and meanwhile, the functions of removing formaldehyde, deodorizing, anti-pollution, purifying air and the like can be achieved, and the photocatalyst bacteriostatic and antibacterial textiles are especially suitable for wall cloth for home decoration.

The invention discloses a door and window sealing material which is prepared from the following raw materials in parts by weight: 30 to 50 parts of PVC resin, 15 to 25 parts of epoxy resin, 5 to 13 parts of polyisobutene, 2 to 8 parts of fumed silica, 7 to 18 parts of dibutyl phthalate, 5 to 10 parts of filler, 2 to 4 parts of paraffin, 1 to 2 parts of magnesium oxide, 3 to 5 parts of zinc oxide, 1.5 to 2.5 parts of ultraviolet absorbent, 0.1 to 0.5 part of light stabilizer, 0.3 to 0.7 part of stearic acid, 0.2 to 0.6 part of carbon black, 0.5 to 4 parts of titanium dioxide and 0.2 to 3 parts of photocatalyst. The door and window sealing material has no toxicity or odor, has good high temperature resistance, good low temperature resistance and excellent sound insulation effect and has functions of removing formaldehyde, deodorizing, resisting pollution, purifying air and the like.

An ultraviolet sterilization device comprises a base, a lamp tube body is rotationally arranged above the base, an LED light source used for emitting visible ultraviolet light beams is arranged in thelamp tube body, and a rotation driving mechanism used for driving the lamp tube body to automatically rotate by 360 degrees is arranged in the base; the lamp tube body is provided with a safety control device used for controlling the LED light source to automatically start and stop and preventing visible ultraviolet light beams emitted by the LED light source from irradiating a human body. Visible ultraviolet light beams emitted by the LED light source can inhibit bacteria and sterilize the interior of a room, the interior of the room can be comprehensively scanned and sterilized, the irradiation range is widened, then the sterilization work efficiency is improved, a strong catalytic degradation function can be generated when the ultraviolet light beams irradiate a photocatalyst layer, soas to effectively degrade toxic and harmful gas in air, effectively kill various bacteria and decompose and innocuously treat toxins released by the bacteria or fungi, and meanwhile the device has the functions of removing formaldehyde, deodorizing, resisting pollution, purifying air and the like.

The invention discloses a Yulangsan tissue culturing method. The method comprises the following steps: induction culture, propagation culture, strong seedling culture and rooting culture, wherein the induction culture, the propagation culture, the strong seedling culture and the rooting culture are all performed in solid culture mediums. According to the method disclosed by the invention, a tissue culturing and quick propagating technology is adopted, so that good properties of original varieties are remained, the propagation coefficient of Yulangsan can be effectively and rapidly increased, the requirement for Yulangsan medicinal materials in the market can be met, and protecting the Yulangsan resources is also facilitated.

The invention discloses a novel desktop air purifier. The novel desktop air purifier comprises a circular bottom plate and a spherical shell; the spherical shell is internally provided with a single chip microcomputer, and a fan, a negative ion generator, an air purification device, a washing system and an annular humidifying device are sequentially arranged in the spherical shell from bottom to top; air inlets are formed in the bottom of the spherical shell, and air outlets are formed in the front side of the upper part of the spherical shell; a motor connected to the fan is arranged on the inner side of the spherical shell; the negative ion generator is connected to the single-chip microcomputer; the washing system is used for washing away dust on the air purification device, and comprises a spray pipe, nozzles, a water receiving tank, a water pump and a connecting hose; the annular humidifying device comprises an annular humidifying water tank and a heating wire which is arranged inthe annular humidifying water tank and is connected to the single chip microcomputer; and the single chip microcomputer is further connected to an external direct-current power supply. The air purifier has the advantages of being simple in structure, reasonable in design, small in size and attractive in appearance, and also has the effects of humidifying air and purifying the air.

The invention relates to a self-cleaning size for yarns, a self-cleaning yarn and a preparation method thereof. The self-cleaning size for yarns is prepared from the following components in parts by weight: 40 to 60 parts of starch, 25 to 45 parts of polyvinyl alcohol, 1 to 6 parts of biological enzyme, 1 to 10 parts of nano-nickel oxide, 1 to 8 parts of Na-montmorillonite, 1 to 8 parts of metal naphthenate, 3 to 15 parts of organic alcohol, 1 to 8 parts of coupling agent, 1 to 8 parts of cross-linking agent, 1 to 8 parts of dispersant and 100 to 150 parts of water. The self-cleaning size for yarns disclosed by the invention can ensure that highly complex multiple nanoscale and micron-scale ultramicrostructures are formed on the surface of a yarn, consequently, a lotus effect is generated, and the yarn obtains a self-cleaning characteristic like a lotus leaf; moreover, under the effect of light, the self-cleaning size for yarns can generate a strong catalytic degradation function, consequently, odor can be effectively removed, staining can be effectively resisted, a variety of bacteria and fungi can be killed, and the yarn cannot be easily stained, and is easy to clean. The size has good adhesion to the yarn, the polyvinyl alcohol is highly compatible to the starch, furthermore, the flexibility of a size film can be enhanced, and the mechanical property of the yarn can be increased.

The invention discloses an optical fiber light guide illumination system for underground space, and particularly relates to the technical field of optical fiber application. Through combination of a solar power supply system and a non-electric illumination system, electric energy converted from solar energy can be converted into light rays again for transmission under the condition of low illumination intensity, so that the illumination intensity is effectively increased, and in the case of insufficient sunlight, good lighting conditions of underground space can still be met; in this way, an electrical lighting system can be prevented from being arranged indoors, so that the construction difficulty and engineering are reduced, and the whole construction cost is reduced; the light emitting source is coated with the photocatalyst assembly, and under the photocatalysis effect, astrong catalytic degradation function can be generated,harmful and toxic gases in the air can be effectively degraded, a variety of bacteria can beeffectively killed, the antibacterial rate reaches 99.99%, and the toxin released by the bacteria or fungi can decomposed and harmlessly treated; and the system also has functions of deodorization and pollution resistance.

The invention discloses a photocatalyst nano bamboo-wood composite plate, relating to the technical field of building decoration. The composite plate comprises a decoration layer, a photocatalyst nano bamboo filament layer and a solid wood layer, wherein the solid wood layer is the bottommost layer, the photocatalyst nano bamboo filament layer is arranged on the solid wood layer, and the decoration layer is the uppermost layer. The photocatalyst nano bamboo filament layer contains bamboo filaments and nano titanium dioxide; and in the process of forming, the bamboo filaments are sequenced arbitrarily in a mold, and then the nano titanium dioxide is mixed in the bamboo filaments, in such a way, the middle of a formed plate has holes. The composite plate disclosed by the invention has the beneficial effects that because a bamboo high-fiber plate is adopted, a floor is wear-resistant, pressure-proof, moisture-proof, fireproof, high in tensile strength and low in shrinkage rate, and does not crack, distort and deform after being laid; the photocatalyst nano titanium dioxide generates a strong catalytic degradation function under the action of light; and because the bamboo filament layer of the plate is provided with holes, the contact area between the air and the material is increased, so that the photocatalytic efficiency is improved.

The invention provides a haze-removing fresh-air filtration apparatus, belonging to the technical field of environmental protection equipment. The bottom of one side of the outer shell of the apparatus is provided with an outdoor fresh air inlet and an exhaust fan; the top of the outer shell is provided with an air blower and a polluted air outlet; a primary electrostatic precipitator is arranged at the inner side of the outdoor fresh air inlet; the inner side of the primary electrostatic precipitator is successively provided with a primary-effect filter screen, a HEPA filter, a photocatalyst filter screen and an activated carbon filter layer; an air heat exchanger is arranged on the upper end of one side of the activated carbon filter layer; a secondary electrostatic precipitator is arranged above the right side of the air heat exchanger; and two sides of the secondary electrostatic precipitator are respectively provided with an UV lamp and a negative-ion generator. The haze-removing fresh-air filtration apparatus provided by the invention can convey outdoor fresh air into a room to realize indoor ventilation and air exchange, so indoor air quality is improved, indoor air is purified, pollutants are effectively removed, and a healthy comfortable indoor environment is created.

The invention discloses a multifunctional textile fabric, which is characterized in that: the multifunctional fabric is coated with a special coating on the basis of ordinary fabrics, and the special coating includes hot melt adhesive, nano titanium dioxide powder, and nano antibacterial powder , nano-infrared powder and nano-wave-absorbing material powder; the advantage of the present invention is that the present invention adds titanium dioxide active materials to the coating, forms a thin film after coating and drying, and can produce a strong catalytic degradation function under the action of light ; It can effectively degrade harmful gases in the air, can effectively kill a variety of bacteria, and also has deodorizing and anti-fouling functions.

The invention belongs to the technical field of fine chemicals, and particularly relates to a sterilization and gas purification material for vehicle air conditioner filtration screens, and a filtration screen preparation method, wherein the sterilization and gas purification material comprises the following raw materials, by weight, 30-50 parts of a negative ion releasing agent, 20-40 parts of anadsorption material, 20-40 parts of benzenediol, 10-30 parts of p-hydroxybenzenesulfonic acid, and 10-40 parts of polydimethylsiloxane. According to the present invention, after the filtration screenis sprayed with the sterilization and gas purification material, the filtration screen can release negative ions and inhibit bacterial proliferation so as to easily purify indoor air.

The invention discloses a practical air purifier. The practical air purifier comprises an air purifier master machine, an air purifier submachine, a first air changing module, a first gas filter, a disinfection module, and a sterilization system, wherein the air purifier master machine comprises a housing; a prefilter, an electrostatic dust collection device, a photocatalyst filter dam, a negative-ion generator and a cross-flow fan are sequentially arranged in the housing; the photocatalyst filter dam is formed by metal grilles coated with a nano-sized titanium dioxide coating; a UV illuminating lamp is arranged at the top of the photocatalyst filter dam; the air purifier master machine comprises an air quality sensor and an intelligent controller; the air purifier submachine comprises a control module and an air purification device; the intelligent controller is used for transmitting control signals to start the air purifier master machine and the air purification device in the air purifier submachine to work; the sterilization system comprises an impurity removal filter screen, a smell removal filter screen, and a sterilizer. Through the adoption of the practical air purifier disclosed by the invention, toxic and harmful gas in the air can be effectively degraded, so that the air is fresh.

The invention discloses an indoor air purifying apparatus comprising a case, a dust-removing tank, a photocatalyst filter board, a filter core and a draught fan. The left and right ends of the case are provided with an air inlet and an air outlet in respective; an air collection tube, the dust-removing tank, the photocatalyst filter board, the filter core and the draught fan are orderly connected between the air inlet and the air outlet from left to right; the dust-removing tank contains alkaline aqueous solution; the air collection tube extends into the internal bottom of the dust-removing tank; meanwhile, a liquid discharging tube is arranged on the bottom of the dust-removing tank; an outlet end of the liquid discharging tube is arranged outside the case; a solution releasing valve is disposed in the liquid discharging tube; a liquid inlet tube is connected over the dust-removing tank; the liquid inlet tube port is arranged outside the case; a flow adjusting valve is arranged on the liquid inlet tube; an ultraviolet lamp is mounted on the top of the case; the photocatalyst filter board is arranged within an illuminating range of the ultraviolet lamp; and the filter core has an external frame, a honeycomb channel, a first filter layer and a second filter layer. PM2.5 in the air can be effectively eliminated; and the indoor air purifying apparatus can degerm, buffer air circulation and enhance filtering effect.

The invention discloses a fresh air machine inlet air filtering device. The fresh air machine inlet air filtering device comprises an air inlet cover, a water mist tank, a drying pipeline and a purification pipe. The air inlet cover is mounted at the air inlet end of the water mist tank; atomization spraying nozzles are mounted in the water mist tank; the water mist tank communicates with the drying pipeline; a primary filter is mounted between the water mist tank and the drying pipeline; one end of the drying pipeline communicates with a buffering chamber; the buffering room further communicates with the purification pipe; a photocatalyst coverage is applied into the purification pipe; ultraviolet generators are mounted on the pipe wall of the purification pipe; the tail end of the purification pipe communicates with an electrolysis chamber; the electrolysis chamber communicates with a dust collection chamber; the air outlet end of the dust collection chamber communicates with an airoutlet pipe; and an adsorbing layer is mounted on the air outlet pipe. Air enters the water mist tank through the air inlet cover; part of dust in the air is subsided by water mist in the water mist tank; then the air enters the dying pipe, and excessive moisture in the air can be dried to prevent influence on subsequent air inlet processing; and the air is subjected to sterilization in the purification pipe and then is exhausted after electrostatic dedusting.

The invention provides an automobile filter screen device. The automobile filter screen device comprises a frame, a polypropylene non-woven cloth, a roller brush and a static generator. A dust box isarranged below one side of the frame, the static generator is arranged in the middle, away from one side of the dust box, of the frame, an electromagnetic sliding groove is formed in one end of the frame, and an electromagnetic sliding block is arranged at one end, away from the dust box, of the electromagnetic sliding groove; and a supporting rod is arranged on the upper portion of the electromagnetic sliding block, a micro motor is arranged on the upper portion of the supporting rod, the roller brush is arranged at the output end of the micro motor, and the polypropylene non-woven cloth is arranged on the upper portion of the frame. According to the automobile filter screen device, the polypropylene non-woven cloth is provided with an open cavity structure, the maximum air mass flow andthe minimum difference can be generated, particles in air can be captured, maintained and borne in a microscopic structure, static can be continuously injected into the polypropylene non-woven cloth through the static generating device, and therefore the high dust and dirt adsorption capability of the automobile filter screen device can be maintained permanently.

An automatic air purifying system comprises a box, universal wheels, an air inlet, an activated carbon adsorption filter screen, a mute turbofan, an atomization section partition plate, an ultrasonic atomizer, a purified water container, an atomization fan, a nano-photocatalyst screen, a plurality of ultrasonic lamp tubes, an air outlet, an atomization pipeline and a negative oxygen ion generator, wherein the universal wheels are mounted at the bottom of the outer side of the box, the air inlet is formed in the side face of the lower portion of the box, the activated carbon adsorption filter screen is mounted inside the box, the mute turbofan is mounted inside the box, the atomization section partition plate is mounted inside the box, the ultrasonic atomizer is positioned in an atomization section and mounted at the bottom of the inner side of the box, the purified water container and the atomization fan are positioned above the ultrasonic atomizer and sequentially mounted inside the box, the nano-photocatalyst screen is mounted in the middle of the box, the ultrasonic lamp tubes are mounted on the nano-photocatalyst screen, the air outlet is formed in the upper portion of the box, the atomization pipeline is connected with the atomization section, extends to the upper portion of the box and is mounted on the inner side face of the box, and the negative oxygen ion generator is mounted at the air outlet in the upper portion of the box. The automatic air purifying system is high in adsorption efficiency, small in drag coefficient and good in purifying effect, generates new beneficial air, functions in protection and can be widely applied to indoor air pollution prevention.

The invention discloses a rare earth material industrial exhaust gas purifying agent based on a perovskite-type composite oxide. The rare earth material industrial exhaust gas purifying agent comprises, by weight, 8 to 20% of grape polyphenol, 4 to 8% of lysine, 5 to 10% of titanium dioxide, 0.01 to 0.5% of a penetrant, 0.01 to 1.0% of a pH adjustment agent, 10 to 20% of a perovskite complex oxide, 1.0 to 2.0% of activated carbon, 0.1 to 0.5% of a humidifier and the balance of purified water. Through use of the perovskite complex oxide as a cocatalyst for modifying the perovskite complex oxidization photocatalysis, the sensibilization, activation and stability of the perovskite complex oxide are improved. Through use of the nano-sized titanium dioxide, under ultraviolet light action, strong catalytic degradation functions are produced and the toxic and harmful gas in air is effectively degraded.

The invention discloses a bacteriostatic electronic platform scale including a scale body, a scale platform, and a dust cover. In the dust cover, an ultraviolet lamp is arranged on the upper surface of the scale body. The bacteriostatic electronic platform scale can form a bacteriostatic region in a weighing area in the dust cover during the usage, and effectively prevents the substances to be weighed in the asepsis condition against bacterial pollution during the weighing.

The invention discloses a wallpaper which comprises a plurality of heating areas and purification areas, wherein each heating area comprises a pattern paper layer, an electric heating wire layer, an anti-mildew anti-bacterial layer and a heating area bottom paper layer. Heating wire turns back and forth between the left and right ends of the wallpaper. Each purification area comprises a nano photocatalytic layer, a light source, a conductive silica gel layer, a graphene radiating film layer and a purification area bottom paper layer. A plurality of tapered holes are formed in the outer surfaceof the conductive silica gel layer, and the light source is arranged in each tapered hole. The longitudinal section of the nano photocatalytic layer is in an arc-shape, and an external controller isfurther arranged. The wallpaper which can automatically purify indoor air when being pasted on an indoor wall, and has high cleaning efficiency and long efficacy time; and in addition, the wallpaper has a heating and warming function, when it is cold, the indoor low temperature can be raised, and the comfort of people in a room can be improved.

The invention discloses dust falling and humidifying equipment for concrete production, which comprises a purifying barrel, a humidifying barrel, a partition plate, a sealing plate and a draught fan,wherein the humidifying barrel is divided into an upper humidifying cavity and a lower water storage cavity through the partition plate, the sealing plate is movably connected into the humidifying barrel, a through groove is formed in the partition plate, a permeable membrane is fixedly connected into the through groove, a ventilating pipe is fixedly connected into the humidifying barrel, the draught fan is communicated with the ventilating pipe and the purifying barrel, a filter screen is arranged in the purifying barrel, dusty air is extracted through the draught fan, humidified and subjected to static electricity removal in the humidifying cavity, the dusty air is purified in the purifying barrel, an air guide plate and an ultraviolet lamp tube are further arranged in the purifying barrel, and the air guide plate is coated with nano titanium dioxide. The nano titanium dioxide on the air guide plate is irradiated by the ultraviolet lamp tube, so that the toxic gas is catalytically degraded by the nano titanium dioxide.

The invention discloses an air purifier used on an office table. The air purifier used on the office table comprises a transparent purifier shell which is provided with an end cover part connected with the purifier shell in a sealed manner; the end cover part is provided with an air inlet and an air outlet which communicate with the shell; the position close to the air inlet is further provided with a fan; and the side, connected with the shell, of the end cover part is provided with a plurality of LED lamps. Photocatalytic purification balls are further arranged in the shell. The end cover part is further provided with an external USB port. By means of the technical scheme, gas is sucked into the purifier shell under the effect of the fan on the air inlet, harmful gas passes through the photocatalytic purification balls, a strong catalytic degrading function is achieved under irradiation of the LED lamps, toxic and harmful gas in air can be effectively degraded, various bacteria are killed, the antibacterial rate reaches up to 99.99%, and toxin released by bacteria or fungi can be decomposed and subjected to harmless treatment; and meanwhile, the functions of deodorization, fouling resistance and the like are achieved, it is avoided that because of air pollution of the work environment, the body health is affected, power is supplied through the USB port, and use is convenient.

The invention discloses a photocatalyst antibacterial shading curtain. The shading curtain comprises several rectangular fabric strips arranged up and down, the longer sides of each curtain strip are parallel to each other, and the upper edge of the fabric strip located below is parallel to the other. The middle part of the back of the cord strip immediately above it is connected by a connecting piece, and the connecting piece is arranged horizontally; a photocatalyst layer is provided on the front surface of the cord strip, and an anti-oxidation layer is also provided between the photocatalyst layer and the front surface of the cord strip, The photocatalyst layer is nano-titanium dioxide / nano-silver paint, and the anti-oxidation layer is hydrophilic nano-silica surface coating material. The entire shading curtain of the present invention is composed of several curtain strips as connecting belts through Velcro or slide fasteners, so that the entire shading curtain can be disassembled or spliced ​​conveniently and quickly. In actual use, the height of the blackout curtain can be adjusted arbitrarily according to actual needs, and it can be disassembled and washed in batches during cleaning, which is more convenient for washing.