35results about How to "With photocatalytic effect" patented technology

The invention discloses a pollutant control device and control method for the recycling of metal mine water resources. The device comprises a multi-stage water inlet constructed wetland (3), and one or more layers of fillers are spread in the multi-stage water inlet constructed wetland (3), water distribution pipes (4) are buried in the filler layers at different height levels for performing multi-stage water inflow, and pollutants are degraded or removed by making received basin water flow through each layer of the filler. In the multi-stage water inlet constructed wetland, the filler varieties, use amount ratio, particle sizes and filling heights in each layer of the filler are specially selected, so that the adsorption of heavy metals, the filtration of suspended matter, the degradationof organic matter, dephosphorization and denitrification in the multi-stage water inlet constructed wetland can be effectively realized, the accumulation of the heavy metals is effectively preventedfrom harming human health, the good conditions of farmland is maintained, and the sustainable and healthy development of agriculture is promoted.

The invention belongs to the technical field of glass surface treatment, and particularly relates to a preparation method and application of a self-cleaning glass hydrophobic agent, comprising the following steps, S1, preparing component A, mixing methylcyclosiloxane, methylphenylsiloxane Alkane and silane coupling agent are polymerized under certain conditions to obtain ternary copolymerized polysiloxane, which is filtered to obtain component A after reacting with surfactant and solvent; S2, to prepare component B, and dimethyl cyclosiloxane Alkane, methyl phenyl siloxane and silane coupling agent are polymerized under certain conditions to obtain ternary copolymerized polysiloxane, which is reacted with surfactant and solvent and then filtered to obtain component B. The preparation method is simple, and the quantitative production requirements are low. After the prepared product acts on the glass surface, water droplets can form water droplets on the glass surface, and the contact angle can be as high as 125°, which can automatically roll off without leaving traces.

The invention relates to methods for preparing and applying a titanium dioxide-carbon composite photocatalyst. The technical scheme is that the method for preparing the titanium dioxide-carbon composite photocatalyst comprises the following steps of: preparing an ordered macroporous-mesoporous carbon material and TiO2 sol respectively, soaking the aged TiO2 sol on the prepared macroporous-mesoporous carbon material by an impregnation method, drying, raising the temperature and calcicining to obtain a TiO2 / C composite photocatalyst material. The method for applying the titanium dioxide-carbon composite photocatalyst is that photocatalytic reaction conditions are that: the adding amount of the titanium dioxide-carbon composite photocatalyst is 1 to 6g / L; a light source is an ultraviolet or visible light source and directly irradiates a solution, the depth of the solution is 0.4 to 0.6cm, and the exposure dose per unit area on the surface of the solution is 12.5 to 12.8mW / cm<2>; and the temperature of a solution system is kept at 20 to 40 DEG C, and air is continuously introduced to maintain the concentration of dissolved oxygen. Macroporous-mesoporous carbon material supported titanium dioxide is used as a photocatalyst, so that TiO2 has high dispersity and photocatalytic activity, and is easier to recycle.

The invention discloses a metal coated pearlescent pigment. The pearlescent pigment is characterized by comprising a flaky substrate and a plurality of titanium dioxide nanorods which are arranged at intervals and are formed on the flaky substrate, so that a nano-structured surface with roughness can be formed by the titanium dioxide nanorods of the pearlescent pigment, and then, a plurality of metal particles are deposited on each titanium dioxide nanorod and the flaky substrate respectively.

The invention relates to an antibacterial kraft paper and a preparation method thereof, comprising (1) preparing clean, dry and flat kraft paper for use; (2) preparing a coating solution, mixing titanate, rosin-modified alkyd resin, and hydroxypropyl starch Dissolve in absolute ethanol and stir evenly; (3) Spread the coating solution evenly on the surface of kraft paper, let it stand for a period of time, evaporate part of the solvent ethanol, and then spray deionized on the surface of kraft paper coated with coating solution Water, in-situ surface hydrolysis, after the hydrolysis reaction is complete, it can be dried. Through the in-situ hydrolysis of titanate, a nano-papillae structure is obtained on the surface of the coating, and the micron-scale surface roughness of the coating itself makes the coating surface superhydrophobic. In addition, the nano-titanium dioxide particles obtained by the in-situ hydrolysis of titanate have antibacterial and photocatalytic effects, and with the superhydrophobic surface, the antibacterial effect of kraft paper can be enhanced.

The invention relates to an antibacterial superhydrophobic coating for wrapping paper and a preparation method thereof. Including (1) preparing clean, dry and flat wrapping paper for later use; (2) preparing a coating solution, dissolving titanate, rosin-modified alkyd resin, and hydroxypropyl starch in absolute ethanol, and stirring evenly; ( 3) Coat the coating solution evenly on the surface of the wrapping paper, let it stand for a period of time, evaporate part of the solvent ethanol, and then spray deionized water on the surface of the wrapping paper coated with the coating solution to carry out in-situ hydrolysis of the surface, hydrolysis After the reaction is complete, it can be dried. Through the in-situ hydrolysis of titanate, a nano-papillae structure is obtained on the surface of the coating, and the micron-scale surface roughness of the coating itself makes the coating surface superhydrophobic. In addition, the nano-titanium dioxide particles obtained by in-situ hydrolysis of titanate have antibacterial and photocatalytic effects, and with the superhydrophobic surface, the antibacterial effect of wrapping paper can be enhanced.

The invention relates to a formaldehyde-removing liquid added with a biological enzyme auxiliary agent and a preparation method thereof, and relates to the technical field of air purification, which includes a photocatalyst, and the photocatalyst includes the following raw materials in parts by weight: 30-34 parts of photocatalyst, 6-10 parts of nanofiber filler, 2-6 parts of water-based acrylic polyurethane, 1-3 parts of anionic surfactant, 1-3 parts of titanate coupling agent, 6-10 parts of dispersant, 80-84 parts of deionized water ; The photocatalyst comprises the following raw materials in weight percentage: nano-titanium dioxide 10-20%, nano-zinc oxide 10-20%, aluminum sulfate 10-14%, anhydrous sodium acetate 1-5%, synergist 6-10% , and the remainder deionized water. By modifying nano-titanium dioxide and nano-zinc oxide, the dispersibility of nano-titanium dioxide and nano-zinc oxide is improved, thereby improving the purification efficiency and effect of photocatalyst on formaldehyde.

The invention belongs to the technical field of glass surface treatment, in particular to a self-cleaning glass hydrophobic agent. The self-cleaning glass hydrophobic agent includes A component and B component. In parts by weight, the A component is prepared from the following raw materials: 100 parts of dimethylcyclosiloxane, containing 20 parts of phenylsiloxane ~50 parts, 5~10 parts of silane coupling agent, 0.1~10 parts of basic catalyst, 5~40 parts of surfactant, 10~90 parts of solvent; the B component is prepared from the following raw materials: organic fluoride 80 parts, 4-15 parts of silane coupling agent, 10-30 parts of dimethyl cyclosiloxane, 10-20 parts of phenylsiloxane, 0.1-10 parts of basic catalyst, 5-40 parts of surfactant parts, 10-90 parts of solvent, and 1-20 parts of nano-titanium oxide. After being used on automobile glass, water droplets can form water droplets on the glass surface, and its contact angle can be as high as 125°, which can automatically roll off without leaving traces, thus solving the problem of unclear vision.

The invention discloses a method for preparing a metal coated pearlescent pigment. The pearlescent pigment is characterized by comprising a flaky substrate and a plurality of titanium dioxide nanorods which are arranged at intervals and are formed on the flaky substrate, so that a nano-structured surface with roughness can be formed by the titanium dioxide nanorods of the pearlescent pigment, and then, a plurality of metal particles are deposited on each titanium dioxide nanorod and the flaky substrate respectively.