34 results about "Silver phosphate" patented technology

The invention relates to the field of electrolytic copper foil processing and application, and discloses a chromium-free environment-friendly passivation solution and an electrolytic copper foil preparation method, and the passivation solution is composed of 80-120 mg / L of silver phosphate, 5-20 mg / L of o-tert-butylphenol, 60-100 mg / L of potassium pyrophosphate and 10-40 mg / L of sulfuric acid. The o-tert-butylphenol can be adsorbed to the crystal boundary of a silver layer to form antioxidant free radicals, and the antioxidant free radicals are preferentially combined with oxygen molecules to form a stable compound, so that the oxidation resistance is improved; and meanwhile, the o-tert-butylphenol can be combined with a silica group of the silane coupling agent, so that the adhesive force of the silane coupling agent on the metal surface is increased, and the stripping resistance of the copper foil is improved.

To provide a visible light-responsive photocatalyst comprising carbon nitride and having superior photocatalytic effect.SOLUTION: The present invention relates to a visible light-responsive photocatalyst comprising carbon nitride and silver phosphate.SELECTED DRAWING: None

The invention discloses a ceramic wine bottle crack glaze and a preparation method thereof, and belongs to the technical field of ceramic wine bottles, the ceramic wine bottle crack glaze comprises the following raw materials by weight: 60-70 parts of crack frit, 2-8 parts of a modified photocatalytic component, 18-22 parts of potassium feldspar, 5-7 parts of Guizhou soil, 1-3 parts of bentonite, and 4-6 parts of calcite; the preparation method of the modified photocatalytic component comprises the following steps: adding a titanate coupling agent into absolute ethyl alcohol, magnetically stirring at 30 DEG C for 30 minutes, then adding a photocatalytic component, continuously stirring for 6-8 hours, and finally drying for 12 hours to obtain the modified photocatalytic component. A glaze surface formed by sintering the glaze material provided by the invention at a high temperature has tiny cracks, also has good self-cleaning performance, can catalytically degrade pollutants on the glaze surface, especially dirt at the cracks, under the irradiation of visible light, and has the advantages of good self-cleaning performance, good self-cleaning performance, good self-cleaning performance and good application prospect. The sanitary condition of the ceramic wine bottle in the using process is greatly improved.

The invention discloses an antibacterial ceramic product and a manufacturing method, and belongs to the technical field of ceramics. A green body of the antibacterial ceramic product comprises the following components: kaolin, potassium feldspar, albite, quartz and titanium oxide. The antibacterial ceramic product comprises a ceramic body and a ceramic glaze layer from inside to outside, and the glaze layer comprises the following components: kaolin, quartz, potassium feldspar, calcined talcum powder, zinc phosphate, silver phosphate, cerium oxide and frit. The prepared antibacterial product has more excellent glaze strength, antibacterial rate and glossiness.

The application discloses a method for constructing a cycloalkene-quinolinone axial chiral compound through a Heck reaction. The method uses a quinolinone compound containing central chirality as a substrate, uses palladium acetate (Pd(OAc)2) and 4,5-bisdiphenylphosphine-9,9-dimethylxanthene (Xantphos) as a catalyst, uses silver phosphate (Ag3PO4) as an alkali, and uses toluene as a solvent to prepare a cycloalkene-quinolinone axial chiral compound. The compound can be reacted with diisobutylaluminum hydride to realize conversion of a functional group. The method has mild reaction conditions, raw materials are easy to obtain, the product has excellent enantioselectivity, and has excellent yield, and thus provides a new method for synthesizing a cycloalkene-quinolinone axial chiral compound.

The invention discloses a preparation method of a silver phosphate / ferroferric oxide carbon composite material. The preparation method specifically comprises the following steps: step 1, preparing Fe-MOF; step 2, preparing Fe3O4 (at) C; and step 3, preparing to obtain the silver phosphate / ferroferric oxide carbon composite material. The method is simple in implementation process and good in compounding effect. The invention further discloses the silver phosphate / ferroferric oxide carbon composite material prepared by the method, the visible light absorption range of the composite material is enlarged, the composite material has high photocatalytic degradation capacity on organic dye, and meanwhile, the material has high magnetism and is easy to recover after being used.

The invention belongs to the technical field of polymer composite materials, and particularly relates to an antibacterial thermoplastic polyurethane composite material and a preparation method thereof. The problems that in the prior art, a thermoplastic polyurethane matrix has a weak diffusion retardation effect on an inorganic silver antibacterial agent, and a phosphorus-containing flame retardant and silver ions coexist to easily generate silver phosphate precipitates, so that the flame-retardant and antibacterial effects are reduced are solved. The composite material disclosed by the invention takes TPU (Thermoplastic Polyurethane) as a matrix, and comprises Ag (at) ZIF-8 (at) PDA-peptide / PtPd and an antibacterial flame-retardant difunctional monomer, through structural gradient optimization design, mechanical properties are considered while slow-release and long-acting sterilization is realized; the flame-retardant and antibacterial polymer material has excellent antibacterial performance and efficient flame-retardant performance, and is suitable for the field of flame-retardant and antibacterial polymer products.

The invention discloses a g-C3N4 / Ag3PO4 / AgCl composite photocatalyst as well as a preparation method and application of the g-C3N4 / Ag3PO4 / AgCl composite photocatalyst. The g-C3N4 is gradually compounded with silver phosphate and silver chloride and then added into a polyacrylonitrile spinning solution, and the nanofiber membrane is prepared through electrostatic spinning. After the g-C3N4 is gradually compounded with silver phosphate and silver chloride, separation of photon-generated carriers is facilitated, and reduction of silver ions by photo-generated electrons is reduced, so that the degradation efficiency of the photocatalyst is improved, and the light corrosion resistance is improved. Meanwhile, the photocatalyst is fixed in the prepared nanofiber membrane, so that the photocatalyst can be stable for a long time in the wastewater treatment process and can be recycled for multiple times, and the treatment cost is reduced, and therefore, the nanofiber membrane fixed g-C3N4 / Ag3PO4 / AgCl composite material can be used for efficiently treating dye wastewater.

The invention belongs to the technical field of catalysts, and discloses a preparation method and application of silver phosphate particles with conical surfaces. The preparation method comprises the following steps: adding ammonia water into a silver nitrate solution, then adding a Na2HPO4 solution, stirring and mixing to obtain a precipitate, and washing to obtain silver phosphate particles with conical surfaces; the concentration of the silver nitrate solution is 15-25 mmol / L; the concentration of the ammonia water is 1.0-5.0% by mass fraction; the volume ratio of the silver nitrate solution to the ammonia water is 20: (1.0-1.2). The preparation method is mild in reaction condition and easy and convenient to operate, the morphology structure of the silver phosphate particles can be well adjusted only by controlling the concentration of the silver nitrate solution, the concentration of the ammonia water and the use amount relation between the silver nitrate solution and the ammonia water, and therefore the silver phosphate particles with the conical surfaces are obtained. The silver phosphate particles with conical surfaces, which are prepared by the preparation method provided by the invention, have a good catalytic effect on photocatalytic decomposition of phenol.

A method of making Cu—Ag3PO4 nanoparticles is provided. The method includes forming a mixture of at least one silver salt, at least one phosphate salt, and at least one copper (II) salt. The method further includes dissolving the mixture in water. The method further includes sonicating the mixture. The method further includes precipitating the Cu—Ag3PO4 nanoparticles or “nanoparticles”. The copper is present in the nanoparticles in an amount of 2 to 23 weight percent (wt. %) based on the total weight of the Cu—Ag3PO4. The nanoparticles of the present disclosure find application in treating cervical cancer, and colorectal cancer. The nanoparticles may also be used in photodegrading environmental pollutants.

The present invention discloses a method for removing antibiotics from livestock and poultry wastewater by using a COFs-based composite photocatalyst, and the COFs-based composite photocatalyst comprises spherical vinyl-functionalized covalent organic frameworks and silver phosphate particles. In the present invention, the treatment method comprises: (1) introducing the livestock and poultry wastewater into the reaction pool of the catalytic reaction device, and then adding the COFs-based composite photocatalyst for catalytic reaction treatment, and the reaction time is 12 to 20 minutes; (2) overflowing the wastewater after the reaction in step (1) into the sedimentation tank, and the sedimentation time is 30 to 90 minutes; (3) discharging the supernatant after sedimentation from the catalytic reaction device; (4) pumping the catalyst after sedimentation back to the reaction pool, and simultaneously arranging a material regeneration tank to carry out activation and regeneration treatment on the catalyst after sedimentation with a period of 1 to 3 months. The present invention has the advantages of high treatment efficiency, simple operation, etc., can achieve complete degradation and removal of antibiotics in livestock and poultry wastewater under the stress of high concentration of COD, ammonia nitrogen and total phosphorus, and has excellent adaptability and good industrial application prospects.

The invention discloses a high-molecular rare earth mineral environment-friendly material and a preparation process, and relates to the technical field of environment-friendly materials, and the high-molecular rare earth mineral environment-friendly material comprises the following components in parts by weight: 80-110 parts of high-molecular material master batch, 50-80 parts of calcium carbonate powder, 0.5-2 parts of silver phosphate, 1.5-4.5 parts of composite rare earth powder and 0.1-0.3 part of antioxidant 1010. According to the high-molecular rare earth mineral environment-friendly material and the preparation process thereof, calcite type calcium carbonate has a regular crystal structure and relatively high hardness, and after the calcite type calcium carbonate is treated by a diammonium hydrogen phosphate solution containing a titanate coupling agent and isopropanol, titanate and diammonium hydrogen phosphate have a synergistic effect, so that an inorganic-organic double-layer modified layer is formed on the surface of calcium carbonate; the interface bonding force with a non-polar PP substrate is greatly improved; meanwhile, the modification time is shortened through microwave radiation pretreatment, modification is more uniform, mechanical defects caused by powder agglomeration in traditional modification are avoided, and finally the tensile strength and impact toughness of the material are remarkably improved.

Table linen (6), in particular disposable table linen and / or textile table linen, wherein the table linen (6) is soaked and / or impregnated with an active ingredient, wherein this active ingredient has an antiviral and / or antibacterial effect, wherein the active ingredient is an antiviral active ingredient with a biocide, in particular silver chloride and / or a chemically activated saline solution and / or a silver phosphate glass and / or a chemical-free solution at the molecular level, wherein positively charged ions are used which, upon contact, damage and / or destroy the negatively charged viral, microbial cells, and / or is silver chloride and / or titanium dioxide.and / or wherein the active ingredient has an antibacterial effect to prevent body odor and / or wherein the active ingredient prevents infection of healthy human cells by harmful viruses and / or wherein the active ingredient works with a silver and vesicle technology and / or wherein the active ingredient has positively charged nanofibers and / or wherein the active ingredient is based on a sustainable, biological, non-chemical basis and / or wherein the active ingredient is based on a specially modified water-based polymer emulsion based on special polymer mixtures, the basis of which is physical and / or mechanical in nature and / or wherein the active ingredient exhibits strong antimicrobial properties after curing,which are solely attributable to hydrophobic interactions of the cured polymer emulsion with the cell membrane of microorganisms and / or wherein this antimicrobial effect is purely physical and / or mechanical in nature and is not attributable to chemical or ionic interactions and / or wherein the polymer emulsion results in a polymer coating and / or wherein the chemical and physical properties of the polymer coating are modeled on the natural structure of microorganisms and / or wherein the active ingredient is free of biocides and nanoparticles.

The invention discloses a potassium-doped carbon nitride and silver phosphate heterojunction photocatalytic material as well as preparation and application thereof. The material comprises nano-sheet potassium-doped carbon nitride and silver phosphate particles deposited on a potassium-doped carbon nitride sheet layer, and the potassium-doped carbon nitride and the silver phosphate particles form a heterojunction structure. The preparation method comprises the following steps: calcining a mixed solid of organic amine and a potassium source to obtain potassium-doped carbon nitride; dispersing potassium-doped carbon nitride in water to obtain a first suspension, adding an Ag < + > solution into the first suspension to obtain a second suspension, adding a phosphate solution into the second suspension, and reacting to obtain a first product; and centrifuging the first product to obtain a precipitate, washing and drying to obtain the K-C3N4 / Ag3PO4 heterojunction material. The photocatalytic oxidation desulfurization conversion rate of the material can reach 90% or above, and the material has excellent oxidative degradation capacity on sulfides such as DBT which are difficult to remove through traditional hydrodesulfurization and can meet the strict standard of deep desulfurization of fuel oil.

The application discloses a silver phosphate composite material with antibiotic degradation and bacteria removal effects and a preparation method and application thereof. The method comprises the following steps: dissolving a nitrogen source and a sulfur source in an organic solvent, adding the obtained dispersion solution into a graphene oxide suspension, stirring to obtain a uniform suspension, and then annealing at high temperature to obtain NSG; adding the NSG into water to obtain an NSG suspension, adding a silver ion solution into the suspension, uniformly mixing, and obtaining an Ag + / NSG suspension; adding a hydrogen phosphate solution into the Ag + / NSG suspension, stirring and reacting, collecting the precipitate, and obtaining the composite material. The Ag3PO4 / NSG composite photocatalyst with antibiotic degradation and bacteria removal effects is prepared through a simple process. The Ag3PO4 / NSG composite photocatalyst is low in cost and can be reused.

An additional antimicrobial protection step applied to leather in the post-tanning process which incorporates a biocide composition and an additive that allows its presence to be identified by luminescent effect, and encryption techniques of the luminescence, wherein the composition is added in the tanning process immediately after the addition of chromium or titanium salts in an amount between 0.1% and 5% of the weight of the material to be tanned and comprises silver phosphate glass; silicone; aliphatic hydrocarbons; water, and the luminescent additive is added in an amount between 0.1% and 5% of the weight of the material to be tanned and comprises calcium fluoride; erbium (III) fluoride; of ytterbium (III) fluoride; a maximum of 5% of thulium (III) fluoride; and a maximum of 5% of europium (III) fluoride, with respect to the total weight of the luminescent additive.

The present invention belongs to the technical field of textile materials and their preparation, and provides a TPU 3D air fiber, a preparation method thereof and an application. The present invention uses electrospinning to prepare TPU fibers to form a three-dimensional structure with ventilation channels; the introduction of organically modified montmorillonite increases the porosity and air permeability of the material; surface modification with polydopamine provides active sites for silver phosphate deposition and synergistically acts with silver phosphate to further improve the antibacterial effect; silver phosphate maintains good antibacterial effects under both light and dark conditions. The prepared TPU 3D air fiber has excellent air permeability and antibacterial properties, and is suitable for aspects such as sportswear, medical aids or household items.

The invention is suitable for the technical field of textile finishing, and provides a silver phosphate colloid, a preparation method thereof and an application of the silver phosphate colloid in textile finishing. The silver phosphate (Ag3PO4) colloid with higher stability is prepared in a high-concentration reaction system by using sodium dodecyl benzene sulfonate (SDBS) as a surfactant, the colloid is stable and does not precipitate in 96 hours, the yield per unit volume is increased, additional auxiliary reagents are not needed in preparation, and the preparation process is simplified. The Ag3PO4 colloid is used as a functional finishing agent for finishing the cotton fabric, and the obtained photocatalytic self-cleaning functional fabric is controllable in loading capacity, excellent in performance in the aspect of visible light catalytic degradation of organic pollutants such as reactive red 195 and wide in application. According to the method, the problem that Ag3PO4 colloid in a high-concentration system is easy to precipitate is solved, photocatalytic and self-cleaning multifunctional finishing of the cotton fabric is realized, and a feasible solution is provided for large-scale production of environment-friendly multifunctional textiles.

The invention discloses a preparation method of silver phosphate (Ag3PO4) nanospheres and application of the silver phosphate (Ag3PO4) nanospheres in electrocatalytic carbon dioxide reduction reaction (ECO2RR). The catalyst is synthesized by adopting a simple complexing-precipitation method, the process is simple and convenient, the condition is mild, and the catalyst is suitable for large-scale preparation. The obtained Ag3PO4 nanospheres show excellent catalytic performance in the CO2 electroreduction process, the activity of the nanospheres is mainly improved due to the fact that silver phosphate promotes generation of key intermediates COOH and COO, the adsorption capacity of the nanospheres to * CO2 intermediates is remarkably enhanced, and therefore the reaction selectivity and catalytic efficiency are effectively improved. The Ag-based electrocatalyst has the remarkable advantage of improving the problem of poor CO2 reduction selectivity of a traditional Ag-based electrocatalyst. Meanwhile, the technology is green and environment-friendly, the used raw materials are cheap and easy to obtain, the energy consumption in the synthesis process is low, and the method has good practicability and wide application prospects.

The invention provides a Co-Ag3PO4 composite photocatalytic material and a preparation method of the Co-Ag3PO4 composite photocatalytic material. The preparation method comprises the following steps: firstly, fully compounding silver nitrate and sodium hypophosphite to obtain pure silver phosphate crystals; and then roasting a cobalt source and Ag3PO4 to obtain the Co-Ag3PO4 composite photocatalytic degradation material. Compared with the prior art, the Co-Ag3PO4 composite photocatalytic degradation organic dye solution has the biggest characteristics that a novel catalyst applied to the field of photocatalytic degradation is simple and efficient in preparation process, and the prepared Co-Ag3PO4 composite photocatalytic degradation organic dye solution material is good in performance, perfect in crystal structure, excellent in recycling performance and easy to recycle.

This invention discloses an 0D / 2D Ag3PO4 / Bi3TiNbO9 heterojunction photocatalyst, its preparation method, and its application, belonging to the field of photocatalysis technology. The method involves adding Bi3TiNbO9 powder to deionized water and stirring to form a suspension, then adding AgNO3 powder and stirring until homogeneous. Finally, Na2HPO4·12H2O solution is added. By introducing silver phosphate onto the surface of bismuth titanate and constructing an 0D / 2D heterojunction, the built-in electric field of the heterojunction promotes the separation of photogenerated carriers. Simultaneously, the narrow bandgap silver phosphate's good response to visible light expands the spectral absorption range of the photocatalyst and inhibits photocorrosion of silver phosphate. The resulting 0D / 2D Ag3PO4 / Bi3TiNbO9 heterojunction photocatalyst has multiple active sites, high photogenerated carrier separation efficiency, and excellent photocatalytic degradation performance of dyes. Furthermore, the preparation process of this invention is simple, with low reaction temperature, short reaction time, and low material cost, making it suitable for industrial production.

The invention belongs to the technical field of coatings, and particularly relates to an antifouling coating for inhibiting microbial growth, electrical equipment, a preparation method and application. The invention provides an antifouling coating for inhibiting microbial growth. By adding film-forming substances such as polyphenyl ether and antibacterial agent components such as a silver phosphate antibacterial agent, a coating formed after the coating is cured has hydrophobic and long-acting antibacterial properties at the same time, and microbial contamination can be prevented for a long time; components such as trifluorochlorosilane modified polyphenyl ether, nano silicon dioxide and the like, and components such as a nano copper oxide antibacterial agent and the like are introduced into the coating, so that a super-hydrophobic long-acting antibacterial protective layer can be formed for electrical equipment; the technical problem that existing hydrophobic coatings are difficult to prevent microbial contamination for a long time is solved.

A method for antimicrobial protection applied to hides in the tanning process incorporating a biocidal composition and an additive allowing the identification by a luminescent effect, and using luminescence encryption techniques, wherein the composition is added in the tanning process immediately after adding the chromium or titanium salts in an amount between 0.1% and 5% by weight of the material to be tanned and comprises: silver phosphate glass; silicone; aliphatic hydrocarbons; and water, and the luminescent additive is added in an amount between 0.1% and 5% by weight of the material to be tanned and comprises silica; alumina; calcium fluoride; erbium (III) fluoride; ytterbium (III) fluoride; thulium (III) fluoride; and europium (III) fluoride.

The present application discloses a catalyst for preparing glyoxal from ethylene glycol. By weight, its raw material composition includes: 45-55 parts of a porous carrier, 8.2-9.5 parts of copper phosphate, 7.5-8 parts of silver phosphate, 0.5-1 part of selenium dioxide, and 100 parts of hydrofluoric acid; the mass fraction of hydrogen fluoride in the hydrofluoric acid is 5.2-7.5%. The preparation method of the catalyst includes the following steps: S1, adding the porous carrier, copper phosphate, silver phosphate, and selenium dioxide into the hydrofluoric acid, mixing evenly to obtain a mixed solution; S2, adjusting the pH of the mixed solution to 1.5-3.5; S3, performing heat treatment on the mixed solution to obtain an intermediate; S4, performing heat treatment on the intermediate to obtain the catalyst. The catalyst is used for catalytic oxidation to prepare glyoxal. The copper, silver, phosphorus, and selenium composite catalyst prepared in the present application helps to improve the conversion rate and selectivity of glyoxal, reduce the activation energy required for the reaction, and thus reduce the temperature required for the reaction.

The invention provides a preparation method of a magnetic biochar / silver phosphate composite material, which comprises the following steps: step S1, biomass template pretreatment: selecting biomass as a template, cleaning in at least one of an acid solution, an alkali solution and a buffer solution, and performing low-temperature freezing and slicing to obtain the biomass template; step S2, preparing magnetic biochar: preparing the biomass template prepared in the step S1 by a one-pot method to obtain the magnetic biochar; and S3, preparing the magnetic biochar / silver phosphate composite material: performing surface modification on the magnetic biochar prepared in the step S2 by adopting a modifier containing an organic anion group, and performing induced precipitation on the magnetic biochar subjected to surface modification to obtain the magnetic biochar / silver phosphate composite material. The magnetic charcoal / silver phosphate composite material provided by the embodiment of the invention is high in photocatalytic activity, good in stability, easy to recover, good in circularity, low in cost and green in process.

The invention discloses a preparation method and application of self-supporting supported silver nanoparticles, and relates to the technical field of electrocatalysis, and the preparation method comprises the following steps: adopting a three-electrode system, taking a silver foil or a silver net as a working electrode, and taking an Ag / AgCl electrode as a reference electrode; a carbon rod serves as a counter electrode; performing pretreatment on the silver foil or the silver net in a phosphoric acid buffer solution; performing reduction treatment on an oxide layer on the surface of the silver foil or the silver net through an electrochemical in-situ reduction method; forming a uniform silver phosphate thin layer on the surface of the silver foil or the silver net by using an electrochemical in-situ oxidation method and setting a constant potential for several seconds; after the step S3 is carried out, negative potential is applied to the solution, and the self-supporting supported silver nanoparticles are prepared. According to the Ag NPs / Ag3PO4 prepared by the invention, the yield of preparing DHMF by hydrogenating HMF is 0.679 mmol cm <-2 > h <-1 >, and the selectivity and the Faraday efficiency are respectively improved to 94.59% and 95.06%. In a paired coupling system, the total Faraday efficiency reaches up to 185.5%.

A coating composition containing silver ions and an isothiazolinone derivative as antimicrobial agents, wherein the silver ions and the isothiazolinone derivative are homogeneously dispersed in a liquid matrix and their total concentration is not more than 10% by weight of the matrix, and further the weight ratio of silver ions, calculated as elemental silver, to isothiazolinone derivative is 1:50 to 50:1, wherein the isothiazolinone derivative is selected from the group consisting of 2-n-octyl-4-isothiazolin-3-one and 2-octyl-2H-isothiazolin-3-one and / or salts thereof, and further wherein the silver ions are contained as a silver salt, wherein the silver salt is selected from silver carboxylates, silver fluoride, silver bromide, silver phosphate, silver phosphate glass, silver iodide, silver carbonate, and any combination of the aforementioned silver salts.

The invention provides an efficient near-infrared response photocatalytic composite crystal as well as a preparation method and application thereof, and belongs to the technical field of preparation of non-traditional semiconductor crystals. According to the preparation method, upconversion nanoparticles NaYF4: Yb, Tm and MOF are fused through a one-step method to obtain an upconversion functionalized MOF nanocomposite, and then the multifunctional MOF nanocomposite is prepared through amidation reaction and reversible addition-fragmentation chain transfer polymerization. And finally, fusing the composite nanoparticles with silver phosphate crystals through a biomimetic synthesis strategy to obtain the multifunctional ternary composite silver phosphate crystals. According to the method, the problems of limitation of the wavelength range of silver phosphate absorption light and light corrosion are solved, the photocatalytic composite crystal can effectively degrade rhodamine B when being used under near-infrared light, and excellent cycling stability is achieved while the leading near-infrared light catalytic activity is kept.

The invention relates to the technical field of nano composite materials, in particular to 3D silk fibroin-silver sulfide and silver phosphate composite aerogel and a preparation method and application thereof.The preparation method comprises the steps that a silk fibroin-silver nitrate solution is poured into a polypropylene mold, and silk fibroin-silver nitrate aerogel of a one-way structure is obtained through a freeze-drying method; the silk fibroin-silver sulfide / silver phosphate composite aerogel is finally obtained through synthesis and conversion in a phosphoric acid methanol solution and a thioacetamide ethanol solution, and the silk fibroin-silver sulfide / silver phosphate composite aerogel can efficiently cooperate with solar water evaporation and photocatalytic degradation of volatile organic pollutants in a 3D working mode. Compared with traditional disordered aerogel, the prepared 3D unidirectional silk fibroin-silver sulfide / silver phosphate composite aerogel has more excellent water transmission capacity and evaporation rate, the water evaporation rate reaches 2.86 kg m <-2 > h <-1 > in the sun, and meanwhile, the 3D unidirectional silk fibroin-silver sulfide / silver phosphate composite aerogel has a better degradation effect under the conditions of high-concentration volatile organic pollutants and high light intensity.

A biocidal product for application to surfaces, particularly non-porous hard surfaces or the like, incorporating a luminescent identification marker which makes it possible to certify the presence of the product and therefore that protection is maintained, in addition to certifying its originality using luminescence encryption techniques. This biocidal composition enables its continuous disinfection action 24 hours a day, 7 days a week and is formed by the mixture of a biocidal composition and a luminescent additive dispersed therein, wherein the biocidal composition includes a mixture of biocidal agents formed by the combination of 0.5-5.0% dimethyl didecyl ammonium chloride and 0.5-5.0% dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride of a biocidal nature and a silver ion solution preferably consisting of silver phosphate glass in a proportion of 0.1-1%, and the luminescent additive includes aluminosilicate metal oxides containing rare earth ions as dopants.