CN116831140A - Indoor efficient antibacterial odor removing agent and preparation method and application thereof - Google Patents
Indoor efficient antibacterial odor removing agent and preparation method and application thereof Download PDFInfo
- Publication number
- CN116831140A CN116831140A CN202310766028.5A CN202310766028A CN116831140A CN 116831140 A CN116831140 A CN 116831140A CN 202310766028 A CN202310766028 A CN 202310766028A CN 116831140 A CN116831140 A CN 116831140A
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- Prior art keywords
- silicon
- nano
- silver
- silver bromide
- agent
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Links
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- 238000002360 preparation method Methods 0.000 title abstract description 13
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- HNEGCRMUYSKRRR-UHFFFAOYSA-N Trichodermin Natural products CC(=O)OC1CC2OC3C=C(C)CCC3(C)C1(C)C21CO1 HNEGCRMUYSKRRR-UHFFFAOYSA-N 0.000 claims abstract description 14
- HNEGCRMUYSKRRR-IKIFYQGPSA-N trichodermin Chemical group C([C@@]12[C@@]3(C)[C@@]4(C)CCC(C)=C[C@H]4O[C@@H]1C[C@H]3OC(=O)C)O2 HNEGCRMUYSKRRR-IKIFYQGPSA-N 0.000 claims abstract description 14
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
- A01N59/20—Copper
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01P3/00—Fungicides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
- A61L9/014—Deodorant compositions containing sorbent material, e.g. activated carbon
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/138—Halogens; Compounds thereof with alkaline earth metals, magnesium, beryllium, zinc, cadmium or mercury
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
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Abstract
The invention relates to the technical field of environmental protection, in particular to an indoor efficient antibacterial odor remover, a preparation method and application thereof, wherein the remover comprises a composite antibacterial agent, silver bromide-silver/nano silicon, hydrogel, a wetting agent, a defoaming agent and the balance of water; the composite antibacterial agent is trichodermin C4-position ester internal derivative and/or copper-loaded zinc oxide nano material; the silver bromide-silver/nano silicon is formed by attaching silver-silver bromide to a nano silicon chip. The invention has excellent environmental adaptability, obvious antibacterial property under natural light, weak light or no light conditions, broad-spectrum, high-efficiency and rapid sterilization effect, and the sterilization rate on bacteria and viruses is mostly over 99 percent, and fungi are inhibited from growing; under visible light, the formaldehyde-removing agent can play an excellent role in decomposing formaldehyde and removing odor molecules, reduce formaldehyde release of a base material, purify and decompose formaldehyde and odor molecules in air, maintain effectiveness for a long time and continuously purify indoor air; the raw materials are nontoxic and have no side effects, and are safe and environment-friendly.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to an indoor efficient antibacterial odor removing agent and a preparation method and application thereof.
Background
In recent years, with the high-speed development of the economy in China, the industrial and agricultural modernization level is continuously improved, the living standard of people is also improved to a great extent, and particularly in the aspect of living conditions, the living area per person is greatly increased, and indoor decoration is also more and more attractive. However, people in the indoor space of a long time have various uncomfortable symptoms such as headache, cough, tiredness and the like, serious people even have various diseases, and research finds that the diseases are quite related to indoor air pollution. The concentration of contaminants in indoor air is 2-5 times higher than outdoors in many places, and about 90% of the urban population spends indoors. Therefore, attention is paid to indoor air quality, prevention of indoor air pollution, and detection and control of indoor air pollution are focuses of public attention.
Formaldehyde is one of the main indoor pollutants, and is mainly derived from paint solvents, adhesives of plywood and some fabric surfaces. The main treatment methods of the indoor decoration pollution at present are a physical adsorption method, a chemical reaction method, a catalytic oxidation method, a biological method, a composite method and a cold plasma method. Among them, the adsorption method is the most commonly used method due to low price and easily available raw materials, but the adsorption method such as carbon adsorption is ideal for recycling volatile organic gases with low concentration, carbon dioxide, sulfur dioxide and the like, and has almost no purification effect on chemical emissions generated by decoration. From the comprehensive comparison, the catalytic oxidation method is a new method for purifying air with wider prospect. The photocatalyst is a general term of a photo-semiconductor material with a photocatalysis function represented by nano-scale titanium dioxide, and can effectively degrade toxic and harmful gases in air under the action of ultraviolet light and visible light when being coated on the surface of a substrate, but the existing photocatalyst still has the problems of single degradation pollutant species, poor catalytic degradation performance under visible light, limited chemical pollution only in a short period, incapability of effectively removing formaldehyde hidden in furniture and the like.
The antibacterial material is a novel functional material with the functions of killing and inhibiting the growth and reproduction of microorganisms and the activity of the microorganisms, and comprises natural antibacterial materials, organic antibacterial materials, inorganic antibacterial materials and organic-inorganic composite antibacterial materials. The natural antibacterial material is mainly an animal and plant extract, the market multipurpose and large-amount requirements are hardly met at present, the inorganic antibacterial material is mainly prepared by supporting metal ions on carriers such as activated carbon, activated alumina, silica gel or aluminosilicate, the antibacterial effect and the antibacterial spectrum of the antibacterial material prepared by different carriers are greatly different, the carrier material is single in component, the synergistic multiplication of the carriers and the antibacterial metal ions is difficult to perform, and the antibacterial effect of the antibacterial metal ions cannot be sufficiently performed. The organic antibacterial material comprises degerming agent, bactericide, antiseptic, mildew inhibitor, algicide, etc. However, conventional organic antibacterial materials also have many fatal weaknesses, such as: poor chemical stability, heat resistance, easy volatilization in heat, light or water, and difficult realization of long-term effect; failure to decompose under the high temperature, high pressure, high shear processing conditions of many polymers can even produce toxic decomposition products.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides an antibacterial odor removing agent which has low toxicity, good stability, wide bactericidal spectrum and antibacterial effect and can continuously purify indoor environment, a preparation method and application.
On one hand, the invention provides an indoor efficient antibacterial odor removing agent, which is characterized in that: comprises the following components in parts by weight: 8-13 parts of silver bromide-silver/nano silicon, 12-18 parts of composite antibacterial agent, 32-38 parts of hydrogel, 1-3 parts of wetting agent, 0.5-2 parts of defoamer and the balance of water;
the silver bromide-silver/nano silicon is formed by attaching silver-silver bromide to a nano silicon chip;
the composite antibacterial agent is trichodermin C4-position ester internal derivative and/or copper-loaded zinc oxide nano material. The silver bromide-silver/nano-silicon has adsorption and visible light catalytic degradation performances, can absorb and decompose formaldehyde indoors, purify and decompose other gas pollutants in the air indoors, has high visible light degradation performance, has good antibacterial effect on bacteria by taking metallic silver as an antibacterial active center, and can increase electrostatic adsorption between copper-loaded zinc oxide nano-material and bacteria, so that Cu is released on one hand 2+ Penetration of the cell wall into bacteria causes denaturation of internal proteins, and zinc oxide, on the other hand, generates OH and active oxygen by photocatalysis and dissolves Zn 2+ The trichoderma C4 ester internal derivative is modified by taking natural trichoderma as a lead compound, and has the advantages of low toxicity, broad spectrum and high-efficiency sterilization effect.
Preferably, the C4-position ester internal derivative of trichoderma is as follows:
the scheme uses natural product trichoderma as lead compound to modify, and carries out derivative design at C4 position, thereby improving the bioactivity and stability of the trichoderma, having low toxicity, broad spectrum, high efficiency and unique action mechanism, and optimally, the C4 position modification group is->
Preferably, the copper-loaded zinc oxide nanomaterial is prepared by the following method: adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5-0.8mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0-1.5mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃ and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multi-wall carbon tube into 0.5-0.8mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding. In the scheme, the modified multiwall carbon tube is enriched with nano zinc oxide and Cu 2+ Reduce the negative charge density on the surface, thereby increasing the electrostatic adsorption with bacteria and releasing Cu 2+ 、Zn 2+ Modifying cellular protein, generating OH and active oxygen by nano zinc oxide photocatalysis, and dissolving Zn out 2+ And killing bacteria and mold.
Preferably, the modified multiwall carbon tube is prepared by the following method: placing the multi-wall carbon tube in mixed acid, performing ultrasonic dispersion for 1-2h, separating, washing and drying to obtain a carboxylated multi-wall carbon tube, dispersing the carboxylated multi-wall carbon tube in DMF, and adding pre-illuminated acrylamide monomer under dark condition, wherein the mass ratio of the acrylamide to the carboxylated multi-wall carbon tube is (350-400): 1, adding a composite initiator which is 0.3 to 0.5 percent by weight of the mass of the acrylamide, stirring and reacting for 20 to 40 minutes under the irradiation of ultraviolet, filtering and separating, cleaning and drying. In the scheme, the multi-wall carbon tube is subjected to strong oxidation modification to generate carboxyl and hydroxyl on the surface and at the two ends, impurities are removed, the density of the multi-wall carbon tube is improved, the pre-illuminated acrylamide monomer and the multi-wall carbon tube are subjected to grafting modification under the ultraviolet light condition, the dispersibility of the multi-wall carbon tube is greatly improved, agglomeration adhesion is avoided when metal nano-particles are loaded, the pre-illumination time is preferably 1-3min in actual operation, and the grafting rate can reach 25% after the acrylamide monomer forms part of active chain growth points, the acrylamide monomer is mixed with the multi-wall carbon tube.
Preferably, the composite initiator is camphorkun and dimethylaminoethyl methacrylate with the mass ratio of 3:1. In the scheme, camphorkun is used as a main initiator, dimethylaminoethyl methacrylate is used as a secondary initiator, and the grafting amount of the carbon nano tube is optimized.
Preferably, the silver bromide-silver/nano-silicon catalyst is prepared by the following method: dispersing nano silicon in deionized water to form 1-3% nano silicon suspension, stirring, adding silver bromide solution, adjusting pH value to 7-9, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form 1-3% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying. In this scheme, the molar mass ratio of silver bromide to nano-silicon is preferably (1-3) mol:1g, the catalyst is prepared by photo-reduction, a formed silver bromide-silver heterojunction generates a plasma resonance effect, the absorption of visible light is improved, the response range of light is enlarged, meanwhile, the nano silicon increases the dispersibility of the silver bromide, particle aggregation is avoided, and the photocatalytic activity is improved.
Preferably, the nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a hydrothermal corrosion method is adopted to form a silicon nano-pore array, the pore diameter on a silicon column is gradually reduced from 40+/-5 nm on the top of the column to 15+/-5 nm on the bottom of the column, the size range of the silicon column is 1.9-4.5nm, and the thickness of a pore array area is 2-20 mu m. The band gap energy of monocrystalline silicon is widened due to the existence of the silicon nano column, and the specific surface area of the nano silicon prepared by the scheme is greatly increased due to the regular array structure and the special nano porous structure.
Preferably, the hydrothermal corrosion liquid is a mixed aqueous solution of hydrofluoric acid and ferric nitrate, wherein the concentration of the hydrofluoric acid is 12-15mol/L, and the concentration of the ferric nitrate is 0.04-0.07mol/L.
Preferably, the hydrogel is one or more than two of sodium laurate hydrogel, sodium alginate hydrogel, polyvinyl alcohol hydrogel, polyacrylamide hydrogel, agar hydrogel and polyethylene glycol hydrogel. The gel has the characteristic of thermal reversible phase transition to form a three-dimensional fiber grid structure, so that aggregation and precipitation of nano particles are effectively avoided, the surface hydrophilicity of a base material can be increased, and the self-cleaning capability is improved.
On the other hand, the invention provides a preparation method of the indoor efficient antibacterial odor removing agent, which is characterized by comprising the following steps: heating and dissolving the hydrogel until the hydrogel is transparent, adding a wetting agent and a defoaming agent, and dispersing at medium speed for 20-40min; then adding a composite antibacterial agent and silver bromide-silver/nano silicon, and dispersing at a high speed for 30-40min; water was added to adjust the viscosity.
In another aspect, the present invention provides an application of an antimicrobial deodorizing agent in indoor air purification. In practical application, the method comprises purifying indoor toxic gas such as formaldehyde, benzene series, ammonia, total volatile organic compounds, sulfur dioxide, carbon monoxide, etc.; the product also comprises peculiar smell adsorption, such as indoor smoke smell, toilet smell, garbage smell, animal smell and the like, and also comprises the functions of maintaining stability, continuously sterilizing and inhibiting bacteria, mould and the like.
Preferably, the antimicrobial odor control agent is applied to the surface of the substrate by brushing, roll coating, dip coating or spray coating.
The beneficial effects are that: compared with the prior art, the invention has excellent environmental adaptability, obvious antibacterial property under the conditions of natural light, weak light or no light, and broad-spectrum, high-efficiency and rapid sterilization effect. The killing rate of bacteria and viruses is mostly over 99 percent, and fungi are inhibited and can not grow; under visible light, the formaldehyde-removing agent can play an excellent role in decomposing formaldehyde and removing odor molecules, reduce formaldehyde release of a base material, purify and decompose formaldehyde and odor molecules in air, maintain effectiveness for a long time and continuously purify indoor air; the raw materials are nontoxic and have no side effects, and are safe and environment-friendly.
Drawings
FIGS. 1a and 1b show field emission scanning electron microscope (FE-SEM) micrographs of nano-silicon and silver-silver bromide/nano-silicon;
FIG. 2 shows TEM images of a multiwall carbon tube before and after modification;
FIG. 3 shows TGA spectra before and after modification of multi-wall carbon tubes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to specific embodiments. It should be further noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the specific embodiments, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1 antibacterial odor removing agent
Comprises the following components in parts by weight: 8 parts of silver bromide-silver/nano silicon, 8 parts of trichodermin C4-position ester derivatives, 10 parts of copper-loaded zinc oxide nano material, 32 parts of sodium laurate hydrogel, 1 part of polyether-dimethylsiloxane graft copolymer, 0.5 part of modified polydimethylsiloxane and the balance of water;
the structural formula of the trichodermin C4-position ester internal derivative isThe preparation method comprises the following steps: dissolving 1.0g of trichoderma in 20ml of methanol, stirring and dropwise adding 8% NaOH aqueous solution, reacting for 15min, concentrating and crystallizing to obtain (4R) -4-hydroxy trichoderma; 0.8mol of (4R) -4-hydroxy trichoderma and 0.8mol of acid are dissolved in 10ml of dichloromethane, 0.33g of dicyclohexylcarbodiimide and 0.195g of DMAP are added, the mixture is stirred at room temperature for reaction for 14 to 16 hours, and the reaction solution is obtained after washing, drying and concentrating by dilute hydrochloric acid and distilled water, and then separating by a column.
The copper-loaded zinc oxide nano material is prepared by the following method: placing the multiwall carbon tube in a volume ratio of 1:3, performing ultrasonic dispersion for 1-2h at 80-90 ℃ and then separating, washing and drying to obtain carboxylated multi-wall carbon tubes, dispersing 10mg of carboxylated multi-wall carbon tubes in 10ml of DMF, preparing a 10% solution by dissolving in DMF, adding 0.3% by weight of a composite initiator of 3:1 of camphorkun and dimethylaminoethyl methacrylate, and mixing with the multi-wall carbon tube dispersion liquid under the dark condition by pre-illumination for 2.5min, wherein the mass ratio of an acrylamide monomer to the carboxylated multi-wall carbon tubes is 350:1, after ultrasonic mixing for 5min, carrying out grafting reaction for 20min under ultraviolet irradiation, filtering and separating a product, cleaning with DMF and deionized water, and drying to obtain a modified multi-wall carbon tube; adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃, and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multiwall carbon tube into 0.5mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding to obtain the copper-loaded zinc oxide nano material.
Silver bromide-silver/nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a columnar silicon nano-pore array is formed by adopting a hydrothermal corrosion method, and the hydrothermal corrosion method comprises the following conditions: the concentration of hydrofluoric acid is 12mol/L, the concentration of ferric nitrate is 0.04mol/L, and the etching is carried out for 5min at 70 ℃; the pore diameter of the silicon column on the substrate gradually decreases from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 1.9-2.5nm, the distance between two adjacent pore walls is 3-8 mu m, and the thickness of the pore array area is 15-20 mu m; dispersing nano silicon in deionized water to form a 1% nano silicon suspension, stirring, adding silver bromide solution, adjusting the pH value to 7, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form a 1% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying.
The preparation method comprises the following steps: heating the sodium laurate hydrogel with the formula amount at 50-60 ℃, stirring and dissolving, when the mixed solution is transparent, adding the polyether, the dimethyl siloxane graft copolymer and the modified polydimethylsiloxane in sequence at the stirring speed of 3500 revolutions per minute, and stirring for 20-40min; the stirring speed is increased to 5500 r/min, and the trichodermin C4-position ester internal derivative, copper-loaded zinc oxide nano material and silver bromide-silver/nano silicon are sequentially added for dispersion for 30-40min; the aqueous solution is slowly injected along the wall to adjust the viscosity, continuously stirred at 2000 rpm, gradually cooled, stirred for 60 minutes and cooled to room temperature, and the finished product is prepared.
Example 2 antibacterial odor removal agent
Comprises the following components in parts by weight: 13 parts of silver bromide-silver/nano silicon, 4 parts of trichodermin C4-position ester derivatives, 8 parts of copper-loaded zinc oxide nano material, 38 parts of sodium alginate hydrogel, 3 parts of polyether-dimethylsiloxane graft copolymer, 2 parts of modified polydimethylsiloxane and the balance of water;
the structural formula of the trichodermin C4-position ester internal derivative is
The copper-loaded zinc oxide nano material is prepared by the following method: placing the multiwall carbon tube in a volume ratio of 1:3, performing ultrasonic dispersion for 1-2h at 80-90 ℃ and then separating, washing and drying to obtain carboxylated multi-wall carbon tubes, dispersing 10mg of carboxylated multi-wall carbon tubes in 10ml of DMF, adding 0.8 wt% of a composite initiator of 3:1 of camphorkun and dimethylaminoethyl methacrylate after dissolving in DMF to prepare a 10% solution, and mixing with the multi-wall carbon tube dispersion liquid under the dark condition by pre-illumination for 1min, wherein the mass ratio of acrylamide monomer to carboxylated multi-wall carbon tubes is 400:1, after ultrasonic mixing for 5min, carrying out grafting reaction for 40min under ultraviolet irradiation, filtering and separating a product, cleaning with DMF and deionized water, and drying to obtain a modified multi-wall carbon tube; adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃, and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multiwall carbon tube into 0.5mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding to obtain the copper-loaded zinc oxide nano material.
Silver bromide-silver/nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a columnar silicon nano-pore array is formed by adopting a hydrothermal corrosion method, and the hydrothermal corrosion method comprises the following conditions: the concentration of hydrofluoric acid is 12mol/L, the concentration of ferric nitrate is 0.04mol/L, and the etching is carried out for 5min at 70 ℃; the pore diameter of the silicon column on the substrate gradually decreases from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 1.9-2.5nm, the distance between two adjacent pore walls is 3-8 mu m, and the thickness of the pore array area is 15-20 mu m; dispersing nano silicon in deionized water to form a 1% nano silicon suspension, stirring, adding silver bromide solution, adjusting the pH value to 7, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form a 1% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying.
The preparation method is the same as in example 1.
Example 3 antibacterial odor removal agent
Comprises the following components in parts by weight: 10 parts of silver bromide-silver/nano silicon, 6 parts of trichodermin C4-position ester derivatives, 8 parts of copper-loaded zinc oxide nano material, 35 parts of polyvinyl alcohol hydrogel, 1.5 parts of polyether-dimethylsiloxane graft copolymer, 1 part of modified polydimethylsiloxane and the balance of water;
the structural formula of the trichodermin C4-position ester internal derivative is
The copper-loaded zinc oxide nano material is prepared by the following method: placing the multiwall carbon tube in a volume ratio of 1:3, performing ultrasonic dispersion for 1-2h at 80-90 ℃ and then separating, washing and drying to obtain carboxylated multi-wall carbon tubes, dispersing 10mg of carboxylated multi-wall carbon tubes in 10ml of DMF, adding 0.4 wt% of a composite initiator of 3:1 of camphorkun and dimethylaminoethyl methacrylate after dissolving in DMF to prepare a 10% solution, and mixing with the multi-wall carbon tube dispersion liquid under the dark condition by pre-illumination for 1.5min, wherein the mass ratio of an acrylamide monomer to the carboxylated multi-wall carbon tubes is 380:1, after ultrasonic mixing for 5min, carrying out grafting reaction for 30min under ultraviolet irradiation, filtering and separating a product, cleaning with DMF and deionized water, and drying to obtain a modified multi-wall carbon tube; adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃, and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multiwall carbon tube into 0.5mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding to obtain the copper-loaded zinc oxide nano material.
Silver bromide-silver/nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a columnar silicon nano-pore array is formed by adopting a hydrothermal corrosion method, and the hydrothermal corrosion method comprises the following conditions: the concentration of hydrofluoric acid is 12mol/L, the concentration of ferric nitrate is 0.04mol/L, and the etching is carried out for 5min at 70 ℃; the pore diameter of the silicon column on the substrate gradually decreases from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 1.9-2.5nm, the distance between two adjacent pore walls is 3-8 mu m, and the thickness of the pore array area is 15-20 mu m; dispersing nano silicon in deionized water to form a 1% nano silicon suspension, stirring, adding silver bromide solution, adjusting the pH value to 7, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form a 1% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying.
The preparation method is the same as in example 1.
Example 4 antibacterial odor removal agent
Comprises the following components in parts by weight: 12 parts of silver bromide-silver/nano silicon, 8 parts of trichodermin C4-position ester derivatives, 8 parts of copper-loaded zinc oxide nano material, 36 parts of polyvinyl alcohol hydrogel, 2 parts of polyether-dimethylsiloxane graft copolymer, 1.5 parts of modified polydimethylsiloxane and the balance of water;
the structural formula of the trichodermin C4-position ester internal derivative is
The copper-loaded zinc oxide nano material is prepared by the following method: placing the multiwall carbon tube in a volume ratio of 1:3, performing ultrasonic dispersion for 1-2h at 80-90 ℃ and then separating, washing and drying to obtain carboxylated multi-wall carbon tubes, dispersing 10mg of carboxylated multi-wall carbon tubes in 10ml of DMF, adding 0.35 wt% of a composite initiator of 3:1 of camphorkun and dimethylaminoethyl methacrylate into the solution after dissolving the carboxylated multi-wall carbon tubes in the DMF to prepare a 10% solution, and mixing the solution with the carboxylated multi-wall carbon tubes under the dark condition by pre-illumination for 3min, wherein the mass ratio of acrylamide monomer to carboxylated multi-wall carbon tubes is 370:1, after ultrasonic mixing for 5min, carrying out grafting reaction for 30min under ultraviolet irradiation, filtering and separating a product, cleaning with DMF and deionized water, and drying to obtain a modified multi-wall carbon tube; adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃, and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multiwall carbon tube into 0.5mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding to obtain the copper-loaded zinc oxide nano material.
Silver bromide-silver/nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a columnar silicon nano-pore array is formed by adopting a hydrothermal corrosion method, and the hydrothermal corrosion method comprises the following conditions: the concentration of hydrofluoric acid is 15mol/L, the concentration of ferric nitrate is 0.07mol/L, and the etching is carried out for 60min at 170 ℃; the pore diameter of the silicon column on the substrate gradually decreases from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 4.0-4.5nm, the distance between two adjacent pore walls is 20-25 mu m, and the thickness of the pore array area is 2-10 mu m; dispersing nano silicon in deionized water to form a 3% nano silicon suspension, stirring, adding silver bromide solution, adjusting the pH value to 9, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form a 3% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying.
The preparation method is the same as in example 1.
Example 5 antibacterial odor removal agent
Comprises the following components in parts by weight: 10 parts of silver bromide-silver/nano silicon, 15 parts of trichoderma C4 ester internal derivative, 35 parts of agar hydrogel, 3 parts of polyether and dimethyl siloxane graft copolymer, 2 parts of modified polydimethylsiloxane and the balance of water;
the structural formula of the trichodermin C4-position ester internal derivative is
The copper-loaded zinc oxide nano material is prepared by the following method: placing the multiwall carbon tube in a volume ratio of 1:3, performing ultrasonic dispersion for 1-2h at 80-90 ℃ and then separating, washing and drying to obtain carboxylated multi-wall carbon tubes, dispersing 10mg of carboxylated multi-wall carbon tubes in 10ml of DMF, adding 0.3 wt% of a composite initiator of 3:1 of camphorkun and dimethylaminoethyl methacrylate into the solution after dissolving the carboxylated multi-wall carbon tubes in the DMF to prepare a 10% solution, and mixing the solution with the carboxylated multi-wall carbon tubes under the dark condition by pre-illumination for 2min, wherein the mass ratio of acrylamide monomer to carboxylated multi-wall carbon tubes is 400:1, after ultrasonic mixing for 5min, carrying out grafting reaction for 30min under ultraviolet irradiation, filtering and separating a product, cleaning with DMF and deionized water, and drying to obtain a modified multi-wall carbon tube; adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃, and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multiwall carbon tube into 0.5mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding to obtain the copper-loaded zinc oxide nano material.
Silver bromide-silver/nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a columnar silicon nano-pore array is formed by adopting a hydrothermal corrosion method, and the hydrothermal corrosion method comprises the following conditions: the concentration of hydrofluoric acid is 13mol/L, the concentration of ferric nitrate is 0.05mol/L, and the etching is carried out for 60min at 100 ℃; the pore diameter of the silicon column on the substrate gradually decreases from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 3-3.5nm, the distance between two adjacent pore walls is 10-15 mu m, and the thickness of the pore array area is 18-23 mu m; dispersing nano silicon in deionized water to form 1.5% nano silicon suspension, stirring, adding silver bromide solution, adjusting the pH value to 8, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form a 1.5% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying.
The preparation method is the same as in example 1.
Example 6 antibacterial odor removal agent
Comprises the following components in parts by weight: 10 parts of silver bromide-silver/nano silicon, 15 parts of copper-loaded zinc oxide nano material, 34 parts of polyethylene glycol hydrogel, 2 parts of polyether-dimethylsiloxane graft copolymer, 2 parts of modified polydimethylsiloxane and the balance of water;
the structural formula of the trichodermin C4-position ester internal derivative is
The copper-loaded zinc oxide nano material is prepared by the following method: placing the multiwall carbon tube in a volume ratio of 1:3, performing ultrasonic dispersion for 1-2h at 80-90 ℃ and then separating, washing and drying to obtain carboxylated multi-wall carbon tubes, dispersing 10mg of carboxylated multi-wall carbon tubes in 10ml of DMF, preparing a 10% solution by dissolving in DMF, adding 0.45% by weight of a composite initiator of 3:1 of camphorkun and dimethylaminoethyl methacrylate, and mixing with the multi-wall carbon tube dispersion liquid under the dark condition by pre-illumination for 2.5min, wherein the mass ratio of an acrylamide monomer to the carboxylated multi-wall carbon tubes is 350:1, after ultrasonic mixing for 5min, carrying out grafting reaction for 20-40min under ultraviolet irradiation, filtering and separating a product, cleaning with DMF and deionized water, and drying to obtain a modified multi-wall carbon tube; adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃, and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multiwall carbon tube into 0.5mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding to obtain the copper-loaded zinc oxide nano material.
Silver bromide-silver/nano-silicon is prepared by the following method: the monocrystalline silicon wafer is used as a base material, a columnar silicon nano-pore array is formed by adopting a hydrothermal corrosion method, and the hydrothermal corrosion method comprises the following conditions: the concentration of hydrofluoric acid is 15mol/L, the concentration of ferric nitrate is 0.07mol/L, and the etching is carried out for 40min at 150 ℃; the pore diameter of the silicon column on the substrate gradually decreases from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 3.8-4.2nm, the distance between two adjacent pore walls is 16-23 mu m, and the thickness of the pore array area is 8-15 mu m; dispersing nano silicon in deionized water to form 2.5% nano silicon suspension, stirring, adding silver bromide solution, adjusting pH value to 8, stirring for 4-7h in dark environment, centrifuging, and drying to obtain silver bromide/nano silicon; dispersing silver bromide/nano silicon in deionized water to form 2.5% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying.
The preparation method is the same as in example 1.
Comparative example 1
Based on example 1, the silver bromide-silver/molecular sieve was replaced with an equal amount of silver bromide-silver/nano-silicon.
Comparative example 2
Based on example 2, the silver bromide-silver/nano-silicon was replaced with an equal amount of natural silicon.
Comparative example 3
On the basis of example 3, the natural silicon is replaced by the nano silicon in equal amount.
Comparative example 4
On the basis of example 6, the modified multi-wall carbon tube was replaced with the multi-wall carbon tube in equal amount.
The antibacterial odor removing agent prepared by the invention is tested as follows:
(1) Structure and composition testing (example 1):
FIG. 1a is a FESEM of nano-silicon, which is observed to consist of a large number of regularly arranged, micron-sized silicon pillars; fig. 1b is a FESEM photograph of silver-silver bromide/nano silicon, and it is observed that the top of the column of the sample forms a film composed of particles with smaller particle size, while the inter-column region is a large number of nano-grains with relatively uniform size and loose distribution, and the particle size and dispersibility of the silver bromide are very good, and the mass percentages of the elements obtained from EDS spectrum are: 64.13% of O, 34.64% of Si, 0.48% of Br, 0.75% of Ag, and the content of Ag is slightly larger than Br, which indicates that a small amount of Ag+ in AgBr is reduced to Ag under visible light, so that the content of Ag on the surface of the Ag is larger than Br.
Fig. 2 is a TEM image of a multiwall carbon tube before and after modification, 2a is the multiwall carbon tube before modification, 2b is the multiwall carbon tube after modification, and it can be seen that adhesion is not formed between the multiwall carbon tubes by observation, and the grafting ratio is high.
FIG. 3 shows TGA spectra before and after modification of the multi-wall carbon tube, and the grafting rate reaches 25% as observed.
(2) Antibacterial properties: the test strains were E.coli ATCC8739, staphylococcus aureus ATCC6538. The antibacterial performance is evaluated by adopting a bacteriostasis circle method, and the related detection standard is derived from AATCC90-1982 'method for measuring antibacterial property of fiber-plate culture medium method'. The inhibition zone method is a qualitative test method and is mostly used for identifying the dissoluble antibacterial material and the product containing the dissoluble antibacterial material. The antibacterial material is continuously dissolved and diffused by agar to form different concentration gradients so as to display the antibacterial effect;
(3) Mycotic nature: the mold includes Aspergillus brasiliensis ATCC9642, chaetomium globosum ATCC6205, trichoderma viride ATCC9645, aureobasidium pullulans ATCC15233, and the mold resistance test is performed in accordance with the national standard GB/T1741-1979 (1989) by the Petri dish method (suitable for detecting the mold resistance of a coating using a small piece of sample). The prepared sample is coated on a sterilized filter paper sheet, and is horizontally placed on the surface of a culture medium after 3d ultraviolet irradiation. Spraying the strain suspension on a sample plate uniformly and finely by using a sprayer, airing the sample plate slightly, and covering a dish cover. The cover opening marks the sample, the number and the date, and the sample, the number and the date are put into an incubator to be cultured at 29 ℃ to 30 ℃; after 28d, checking whether the mildew on the surface of the sample plate is normal;
(4) Killing virus: the coating was placed at 1m 3 In the closed space of (2), the control coating area is 1m 2 Spraying the virus into the space above the coating, and detecting the virus killing rate in the space after 1 h; the test results are shown in table 1:
TABLE 1
(5) Durability of air purification:
durability of air purification: the method comprises the steps of simulating an environment with pollution concentration of formaldehyde of 200 mug/L in a sealed light-resistant climatic box, spraying a sample on non-woven fabrics of 0.1m multiplied by 0.1m in the sealed light-resistant climatic box, wherein the spraying amount in each box is the same, placing the climatic box in an indoor visible light environment, enabling the sample to be tested to fully receive visible light, closing a climatic box cover and sealing, connecting a bottom air pressure balance port to a water tank, keeping the air pressure in the climatic box and the pollution gas concentration during sampling, starting a convection fan, keeping the gas concentration in each place in the climatic box equal, closing an air inlet after the pollution gas is introduced to an initial concentration, detecting, recording the initial concentration of formaldehyde in the box, and recording the concentration of formaldehyde in the box again after 6h, 24h, 3d, 7d, 15d and 30d, calculating the formaldehyde clearance, and testing results are shown in table 2;
TABLE 2
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The indoor efficient antibacterial odor removing agent is characterized by comprising the following components in parts by weight: 8-13 parts of silver bromide-silver/nano silicon, 12-18 parts of composite antibacterial agent, 32-38 parts of hydrogel, 1-3 parts of wetting agent, 0.5-2 parts of defoamer and the balance of water;
the silver bromide-silver/nano-silicon catalyst is prepared by the following method: dispersing nano silicon in deionized water to form 1-3% nano silicon suspension, stirring and adding silver bromide solution, wherein the molar mass ratio of the silver bromide to the nano silicon is (1-3) mol:1g, regulating the pH value to 7-9, stirring for 4-7h in a dark environment, centrifugally separating, and drying to obtain silver bromide/nano-silicon; dispersing silver bromide/nano silicon in deionized water to form a 1-3% suspension, stirring for 1-1.5h under illumination, centrifuging, and drying to obtain the final product; the nano silicon is a cylindrical silicon nano hole array formed by taking a monocrystalline silicon wafer as a base material and adopting a hydrothermal corrosion method, the aperture of a silicon column is gradually reduced from 40+/-5 nm at the top of the column to 15+/-5 nm at the bottom of the column, the size range of the silicon column is 1.9-4.5nm, and the thickness of a hole array area is 2-20 mu m; the composite antibacterial agent is trichodermin C4-position ester internal derivative and/or copper-loaded zinc oxide nano material.
2. The indoor high-efficiency antimicrobial odor-reducing agent of claim 1, wherein: the C4-position ester internal derivative of trichoderma is shown as the following general formula:
3. the indoor high-efficiency antimicrobial odor-reducing agent of claim 1, wherein: the copper-loaded zinc oxide nano material is prepared by the following method: adding the modified multiwall carbon tube into a zinc sulfate solution with the concentration of 0.5-0.8mol/L, carrying out ultrasonic dispersion, separating and washing, adding into a sodium carbonate solution with the concentration of 1.0-1.5mol/L, carrying out ultrasonic dispersion to obtain a zinc carbonate colloid, separating, washing, calcining at the temperature of 280-350 ℃ and grinding to obtain a zinc oxide/multiwall carbon tube; adding zinc oxide/multi-wall carbon tube into 0.5-0.8mol/L copper sulfate solution, stirring for 12-24h, separating, washing, drying and grinding.
4. The indoor high-efficiency antibacterial odor removing agent according to claim 3, characterized in that the modified multi-wall carbon tube is prepared by the following method: placing the multi-wall carbon tube in mixed acid, performing ultrasonic dispersion for 1-2h, separating, washing and drying to obtain a carboxylated multi-wall carbon tube, dispersing the carboxylated multi-wall carbon tube in DMF, and adding pre-illuminated acrylamide monomer under dark condition, wherein the mass ratio of the acrylamide to the carboxylated multi-wall carbon tube is (350-400): 1, adding a composite initiator which is 0.3 to 0.5 percent by weight of the mass of the acrylamide, stirring and reacting for 20 to 40 minutes under the irradiation of ultraviolet, filtering and separating, cleaning and drying.
5. The indoor high-efficiency antimicrobial odor-reducing agent of claim 3, wherein: the composite initiator is camphorkun and dimethylaminoethyl methacrylate with the mass ratio of 3:1.
6. The indoor high-efficiency antimicrobial odor-reducing agent of claim 1, wherein: the hydrothermal corrosion liquid is a mixed aqueous solution of hydrofluoric acid and ferric nitrate, wherein the concentration of the hydrofluoric acid is 12-15mol/L, and the concentration of the ferric nitrate is 0.04-0.07mol/L.
7. The indoor high-efficiency antimicrobial odor-reducing agent of claim 1, wherein: the hydrogel is one or more than two of sodium laurate hydrogel, sodium alginate hydrogel, polyvinyl alcohol hydrogel, polyacrylamide hydrogel, agar hydrogel and polyethylene glycol hydrogel.
8. A method for preparing the indoor high-efficiency antibacterial odor removing agent as defined in any one of claims 1 to 7, which is characterized by comprising the following steps: heating and dissolving the hydrogel until the hydrogel is transparent, adding a wetting agent and a defoaming agent, and dispersing at medium speed for 20-40min; then adding a composite antibacterial agent and silver bromide-silver/nano silicon, and dispersing at a high speed for 30-40min; water was added to adjust the viscosity.
9. Use of an antimicrobial deodorizing agent according to claims 1-8 for indoor air purification and sterilization.
10. The use according to claim 9, characterized in that: the remover is coated on the surface of the substrate in a brushing, roller coating, dip coating or spraying mode.
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| CN101429203B (en) * | 2008-12-04 | 2012-01-11 | 建德市大洋化工有限公司 | Trichodermin derivant and uses thereof |
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