CN115138195A - Antibacterial formaldehyde-removing purifying agent and preparation method thereof - Google Patents
Antibacterial formaldehyde-removing purifying agent and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
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- 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
- B01D53/14—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 by absorption
- B01D53/1487—Removing organic compounds
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- B01D53/14—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 by absorption
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- 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
- B01D53/26—Drying gases or vapours
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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Abstract
The invention relates to the technical field of B01D air purification, and particularly provides an antibacterial formaldehyde-removing purifying agent and a preparation method thereof. The invention provides an antibacterial formaldehyde-removing purifying agent, which is prepared from raw materials including nano metal oxide, metal liquid, a carrier, a plant extract, an adsorbent, a thickening agent and a dispersing agent. Compared with the prior art, the antibacterial formaldehyde removal purifying agent prepared by the invention is environment-friendly and pollution-free, has excellent antibacterial performance and formaldehyde removal performance, and is used in areas with humidity of more than 60%.
Description
Technical Field
The invention relates to the technical field of B01D air purification, and particularly provides an antibacterial formaldehyde-removing purifying agent and a preparation method thereof.
Background
Due to the actual industrial production requirements, chemical substances harmful to human bodies are inevitably used in the process of preparing materials such as coatings, adhesives, floors and the like. Formaldehyde is one of common chemical substances, and volatilization of formaldehyde can strongly stimulate skin mucosa, respiratory tract mucosa, digestive tract, cardiovascular and the like of a human body, and seriously harm the health of the human body. The existing formaldehyde removing purificant on the market has the defects of poor antibacterial performance, short action time, low formaldehyde removing efficiency and the like. Therefore, how to prepare a purifying agent which has a long shelf life and can conveniently and efficiently remove formaldehyde in air becomes one of the research hotspots of researchers in recent years.
The Chinese patent with patent publication No. CN109362782A discloses an air freshener for inhibiting bacteria and removing formaldehyde, and the air freshener prepared in the patent has the effects of long effective time and good antibacterial performance by adding auxiliary agents such as a volatilization inhibitor and an antibacterial agent, but the scheme of the air freshener uses functional substances such as melamine and the like, so that secondary pollution can be caused to the environment in the working process.
The Chinese patent with the patent publication number of CN109925852 discloses a formaldehyde-removing composition and a method for removing formaldehyde, and the formaldehyde-removing composition prepared in the patent obviously improves the formaldehyde-removing effect, but the bacteriostatic performance of the formaldehyde-removing composition is not reflected obviously.
Therefore, the formaldehyde removal purifying agent which has excellent bacteriostatic property and formaldehyde removal property, is long in effective time and is environment-friendly is developed, and the formaldehyde removal purifying agent has potential application value.
Disclosure of Invention
In order to solve the problems, the invention provides an antibacterial formaldehyde-removing purifying agent and a preparation method thereof, wherein the preparation raw materials comprise the following components in parts by weight: 5-8 parts of nano metal oxide, 1-4 parts of metal liquid, 2-5 parts of carrier, 2-8 parts of plant extract, 15-25 parts of adsorbent, 1-5 parts of thickening agent, 2-5 parts of dispersing agent and 200-250 parts of water.
As a preferable technical scheme of the invention, the nano metal oxide is at least one of nano iron oxide, nano aluminum oxide, nano zinc oxide and nano titanium dioxide.
As a more preferable technical scheme of the invention, the nano metal oxide is nano titanium dioxide and nano zinc oxide, and the weight ratio of the nano titanium dioxide to the nano zinc oxide is (1.5-2.5): (0.5:1.5).
As a most preferred technical scheme of the invention, the weight ratio of the nano titanium dioxide to the nano zinc oxide is 2:1.
as a preferable technical scheme of the invention, the nano titanium dioxide is anatase type nano titanium dioxide, the particle size is 5-15nm, and the surface area is 50-200m 2 /g。
As a preferable technical scheme of the invention, the particle size of the nano zinc oxide is20-60nm, surface area of 40-80m 2 /g。
The humidity of the air can influence the emission degree of the formaldehyde, the higher the humidity is, the more the formaldehyde is emitted in the air, in order to enable the antibacterial formaldehyde removal purifying agent prepared by the invention to be suitable for an area with the humidity of more than 60 percent, the applicant unexpectedly discovers that when the antibacterial formaldehyde removal purifying agent with the surface area of 100m is added into the system 2 Anatase type nano titanium dioxide/g and the surface area of the anatase type nano titanium dioxide is 60m 2 And when the nano zinc oxide is used for preparing the formaldehyde purifying agent, the nano zinc oxide and other components in the components have mutual synergistic effect, so that the formaldehyde removing effect of the purifying agent is remarkably improved, the air humidity is further reduced, the air humidity is controlled to be 20-40%, and the content of formaldehyde diffused into the air is effectively reduced. The applicant guesses the possible reason of the method, on one hand, anatase type nano titanium dioxide and nano zinc oxide with certain particle size range and surface area are uniformly distributed in the pores on the surface of the ore, and are excited under the condition of illumination to capture the polar groups of other active ingredients in the component, so as to enhance the hydrophilicity, and simultaneously generate a substance with strong oxidant property to react with the active groups absorbed in the formaldehyde on the surface of the substance, so that the formaldehyde is decomposed and absorbed, and the aim of removing the formaldehyde is fulfilled; on the other hand, the excited anatase type nano titanium dioxide and the excited nano zinc oxide adsorb water molecules in the air, so that the air humidity is further reduced, and the phenomenon that the formaldehyde is excessively emitted due to overlarge air humidity is effectively relieved.
As a preferred technical solution of the present invention, the molten metal is at least one of a copper molten metal, a silver molten metal, a gold molten metal, an aluminum molten metal, and a magnesium molten metal.
As a preferable technical solution of the present invention, the molten metal is a silver molten metal.
As a preferred technical scheme of the invention, the carrier is at least one of nano clean stone powder, rui stone powder, attapulgite, sepiolite, tourmaline and zeolite.
As a preferred technical solution of the present invention, the plant extract is at least one of aloe extract, chlorophytum comosum extract, hevea brasiliensis extract, white palm extract, tea extract, and monstera deliciosa extract.
As a more preferable technical scheme of the invention, the weight ratio of the plant extract to the aloe extract to the chlorophytum comosum extract to the tea extract is (0.2-1.0): (2.5-3.5): (1.0-2.0).
As a most preferred technical scheme of the invention, the weight ratio of the aloe extract, the chlorophytum comosum extract and the tea extract is 0.5:3.0:1.5.
as a preferred technical scheme of the invention, the adsorbent is at least one of amino acid and benzoyl hydrazine.
As a preferable technical scheme of the invention, the thickening agent is at least one of lauryl alcohol, linoleic acid, fatty alcohol polyoxyethylene ether sulfate, hydroxypropyl methyl cellulose and chitosan.
As a preferable technical scheme of the invention, the thickening agent is hydroxypropyl methylcellulose and chitosan, and the weight ratio of the hydroxypropyl methylcellulose to the chitosan is (1.0-3.0): (0.5-1.5).
As a preferable technical solution of the present invention, the weight ratio of the hydroxypropyl methylcellulose to the chitosan is 2.5:1.0.
the applicant unexpectedly finds that when hydroxypropyl methyl fiber and chitosan are added into a system, the hydroxypropyl methyl fiber and the chitosan interact with anatase type nano titanium dioxide in the system on the premise of ensuring that the viscosity of the system is in a certain range, so that the hygroscopicity of the nano titanium dioxide is remarkably increased, and the formaldehyde removal effect of the system is enhanced. The applicant conjectures the possible reason that the hydroxypropyl methyl fiber and the chitosan are adsorbed on the surface of the nano titanium dioxide, and on one hand, more polar groups are introduced to the surface of the nano titanium dioxide, so that the hygroscopicity of the surface of the nano titanium dioxide is enhanced, and the air humidity is reduced, so that the formaldehyde-removing air purifying agent prepared by the invention is used in an area with the humidity of more than 60%; on the other hand, the excited nano titanium dioxide oxidizes hydroxyl groups in hydroxypropyl methyl fibers and chitosan into free radicals with high activity, the free radicals decompose formaldehyde molecules adsorbed on the surface of the titanium dioxide, and amino groups in the chitosan can also react with formaldehyde, so that the effect of decomposing formaldehyde is achieved.
As a preferable technical scheme of the invention, the dispersing agent is at least one of sodium dodecyl benzene sulfonate, polyvinylpyrrolidone and phenolic resin.
In order to further enhance the interaction force among the components in the system, ensure that the components fully play roles, and achieve the effects of antibiosis and formaldehyde removal through the synergistic effect, as a more preferable technical scheme of the invention, the dispersant is sodium dodecyl benzene sulfonate and polyvinylpyrrolidone, and the weight ratio of the sodium dodecyl benzene sulfonate to the polyvinylpyrrolidone is (0.2-1.0): (1.0-2.0).
As a most preferred technical solution of the present invention, the weight ratio of the sodium dodecylbenzene sulfonate to the polyvinylpyrrolidone is 0.5:1.5.
the invention provides a preparation method of an antibacterial formaldehyde-removing purifying agent, which comprises the following steps:
(1) Fully grinding the nano metal oxide and the carrier in a grinding machine for 10-20min to obtain uniformly mixed particles, wherein the rotating speed of the grinding machine is 1500-2000r/min;
(2) Weighing the metal liquid, the plant extract, the adsorbent, the thickening agent and the dispersing agent according to the proportion, putting into water, and fully stirring for 20-40min at 90-120 ℃ to obtain a uniformly mixed mixture;
(3) And (3) adding the mixed particles in the step (1) into the mixture in the step (2), and uniformly stirring at 40-80 ℃ to obtain the antibacterial formaldehyde-removing purifying agent.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the antibacterial formaldehyde-removing purifying agent prepared by the invention, the aloe extract, the chlorophytum comosum extract and the tea extract are added, and the active ingredients of the aloe extract, the chlorophytum comosum extract and the tea extract have the effects of inhibiting bacteria and removing formaldehyde together through mutual synergistic action;
2. the antibacterial formaldehyde-removing purifying agent prepared by the invention is prepared by adding the surface area100m 2 Anatase type nano titanium dioxide/g and the surface area of the anatase type nano titanium dioxide is 20-45m 2 The nanometer zinc oxide of/g, it is with other mutual synergistic reaction of component, while promoting the depurative except that formaldehyde effects apparently, still further reduce the air humidity, reduce the dispersity of formaldehyde in the air effectively;
3. when the hydroxypropyl methyl fiber and the chitosan are added into the system, the prepared antibacterial formaldehyde-removing purifying agent ensures that the viscosity of the system is controlled within a temperature range, improves the stability of the system, and simultaneously interacts with anatase type nano titanium dioxide in the system, so that the hygroscopicity of the nano titanium dioxide is obviously increased, and the formaldehyde-removing effect of the system is enhanced;
4. according to the antibacterial formaldehyde-removing purifying agent prepared by the invention, sodium dodecyl benzene sulfonate and polyvinylpyrrolidone are added to interact with active groups in the plant extract, so that the compatibility of the plant extract in a system is increased, the stability of the system is improved, the action time of active ingredients in the plant extract is prolonged, and the volatilization of the active ingredients in the plant extract is effectively relieved;
5. according to the antibacterial formaldehyde-removing purifying agent prepared by the invention, zeolite is added, so that on one hand, the antibacterial formaldehyde-removing purifying agent interacts with a metal liquid in a system, the antibacterial capability of the purifying agent is enhanced, and the air quality is improved; on the other hand, polar groups in the sodium dodecyl benzene sulfonate and the polyvinylpyrrolidone interact with active ingredients on the surface of the zeolite, so that the compatibility of the zeolite and the whole system is improved, the stability of the system is obviously improved, and the service life of the antibacterial formaldehyde-removing purifying agent is prolonged.
Detailed Description
Example 1
The embodiment 1 provides an antibacterial formaldehyde-removing purifying agent, which comprises the following components in parts by weight: 5 parts of nano metal oxide, 1 part of metal liquid, 2 parts of carrier, 2 parts of plant extract, 15 parts of adsorbent, 1 part of thickening agent, 2 parts of dispersing agent and 200 parts of water.
The nano metal oxide is anatase type nano titanium dioxide, nano zinc oxide, anatase type nano titanium dioxide andthe weight ratio of the nano zinc oxide is 2:1, anatase type nanometer titanium dioxide purchased from Ningbo Mingnan New materials science and technology Co., ltd, with the model of MZT-A10, the particle size of 10nm, and the surface area of 100m 2 The nano zinc oxide is purchased from Navigator nano technology development Limited company of synthetic fertilizer, the model is ZH-ZnO50N, the grain diameter is 50nm, and the surface area is 60m 2 /g；
The metal liquid is silver metal liquid and is purchased from Shanghai Merck photoelectric material Co., ltd;
the carrier is zeolite, which is purchased from Xinhe zeolite science and technology Limited, chaoyang;
the plant extracts are aloe extract, chlorophytum comosum extract and tea extract, and the weight ratio of the aloe extract to the chlorophytum comosum extract to the tea extract is 0.5:3.0:1.5, wherein the aloe extract is obtained from Sancheng biological development Co., ltd, baoji City, sailan extract, sailanreli biological engineering Co., ltd, and the tea extract is obtained from Shaanxi Riwoo biological science and technology Co., ltd;
the adsorbent is amino acid, and the CAS number of the amino acid is 20859-02-3;
the thickening agent is hydroxypropyl methylcellulose and chitosan, and the weight ratio of the hydroxypropyl methylcellulose to the chitosan is (1.0-3.0): (0.5-1.5), the CAS number of hydroxypropyl methylcellulose is 9004-65-3, and the CAS number of chitosan is 9012-76-4;
the dispersing agent is sodium dodecyl benzene sulfonate and polyvinylpyrrolidone, and the weight ratio of the sodium dodecyl benzene sulfonate to the polyvinylpyrrolidone is 0.5:1.5, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, and the polyvinylpyrrolidone is purchased from Shanghai Chengyu Biotech Co., ltd, and the model is K30;
the preparation method of the antibacterial formaldehyde-removing purifying agent comprises the following steps:
(1) Fully grinding the nano metal oxide and the carrier in a grinding machine for 15min to obtain uniformly mixed particles, wherein the rotating speed of the grinding machine is 1700/min;
(2) Putting the metal liquid, the plant extract, the adsorbent, the thickening agent and the dispersing agent which are weighed according to the proportion into water, and fully stirring for 30min at 110 ℃ to obtain a uniformly mixed mixture;
(3) And (3) adding the mixed particles in the step (1) into the mixture in the step (2), and uniformly stirring at 60 ℃ to obtain the antibacterial formaldehyde-removing purifying agent.
Example 2
Embodiment 2 provides an antibacterial formaldehyde-removing purifying agent, which comprises the following components in parts by weight: 8 parts of nano metal oxide, 4 parts of metal liquid, 5 parts of carrier, 8 parts of plant extract, 25 parts of adsorbent, 5 parts of thickener, 5 parts of dispersant and 250 parts of water.
The nano metal oxide comprises anatase type nano titanium dioxide and nano zinc oxide, and the weight ratio of the anatase type nano titanium dioxide to the nano zinc oxide is 2:1, anatase type nanometer titanium dioxide purchased from Ningbo Mingnan New materials science and technology Co., ltd, with the model of MZT-A10, the particle size of 10nm, and the surface area of 100m 2 The nano zinc oxide is purchased from synthetic fertilizer Zhonghang nanotechnology development Co., ltd, the model is ZH-ZnO50N, the particle size is 50nm, and the surface area is 60m 2 /g；
The metal liquid is silver metal liquid and is purchased from Shanghai Merck photoelectric material Co., ltd;
the carrier is zeolite, which is purchased from Xinhe zeolite science and technology Limited, chaoyang;
the plant extract is aloe extract, chlorophytum comosum extract and tea extract, and the weight ratio of the aloe extract to the chlorophytum comosum extract to the tea extract is 0.5:3.0:1.5, wherein the aloe extract is obtained from Sancheng biological development Co., ltd, baoji City, sailan extract, sailanreli biological engineering Co., ltd, and the tea extract is obtained from Shaanxi Riwoo biological science and technology Co., ltd;
the adsorbent is amino acid, and the CAS number of the amino acid is 20859-02-3;
the thickening agent is hydroxypropyl methylcellulose and chitosan, and the weight ratio of the hydroxypropyl methylcellulose to the chitosan is (1.0-3.0): (0.5-1.5), the CAS number of hydroxypropyl methylcellulose is 9004-65-3, the CAS number of chitosan is 9012-76-4;
the dispersing agent is sodium dodecyl benzene sulfonate and polyvinylpyrrolidone, and the weight ratio of the sodium dodecyl benzene sulfonate to the polyvinylpyrrolidone is 0.5:1.5, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, and the polyvinylpyrrolidone is purchased from Shanghai Chengyu Biotechnology Limited and has the model number of K30;
the preparation method of the antibacterial formaldehyde-removing purifying agent is the same as that of the example 1.
Example 3
Embodiment 3 provides an antibacterial formaldehyde-removing purifying agent, which comprises the following components in parts by weight: 6 parts of nano metal oxide, 3 parts of metal liquid, 4 parts of carrier, 6 parts of plant extract, 20 parts of adsorbent, 3 parts of thickening agent, 3 parts of dispersing agent and 220 parts of water.
The nano metal oxide comprises anatase type nano titanium dioxide and nano zinc oxide, and the weight ratio of the anatase type nano titanium dioxide to the nano zinc oxide is 2:1, anatase type nanometer titanium dioxide purchased from Ningbo Mingnan New materials science and technology Co., ltd, with the model of MZT-A10, the particle size of 10nm, and the surface area of 100m 2 The nano zinc oxide is purchased from Navigator nano technology development Limited company of synthetic fertilizer, the model is ZH-ZnO50N, the grain diameter is 50nm, and the surface area is 60m 2 /g；
The metal liquid is silver metal liquid and is purchased from Shanghai Merck photoelectric material Co., ltd;
the carrier is zeolite, which is purchased from Xinhe zeolite science and technology Limited, chaoyang;
the plant extract is aloe extract, chlorophytum comosum extract and tea extract, and the weight ratio of the aloe extract to the chlorophytum comosum extract to the tea extract is 0.5:3.0:1.5, wherein the aloe extract is obtained from Sancheng biological development Co., ltd, baoji City, sailan extract, sailanreli biological engineering Co., ltd, and the tea extract is obtained from Shaanxi Riwoo biological science and technology Co., ltd;
the adsorbent is amino acid, and the CAS number of the amino acid is 20859-02-3;
the thickening agent is hydroxypropyl methylcellulose and chitosan, and the weight ratio of the hydroxypropyl methylcellulose to the chitosan is (1.0-3.0): (0.5-1.5), the CAS number of hydroxypropyl methylcellulose is 9004-65-3, and the CAS number of chitosan is 9012-76-4;
the dispersing agent is sodium dodecyl benzene sulfonate and polyvinylpyrrolidone, and the weight ratio of the sodium dodecyl benzene sulfonate to the polyvinylpyrrolidone is 0.5:1.5, the CAS number of the sodium dodecyl benzene sulfonate is 25155-30-0, and the polyvinylpyrrolidone is purchased from Shanghai Chengyu Biotech Co., ltd, and the model is K30;
the preparation method of the antibacterial formaldehyde-removing purifying agent is the same as that of the example 1.
Comparative example 1
Comparative example 1 the embodiment is the same as example 3 except that the anatase nano titanium dioxide is obtained from Ningbo Mininaxina materials science and technology Co., ltd, model MZT-A01, having a particle size of 5nm and a surface area of 180m 2 (iv) g; the nanometer zinc oxide is purchased from hybrid fertilizer Zhonghang nanotechnology development Co Ltd, and has model of ZH-ZnO100N, particle diameter of 100nm, and surface area of 41m 2 /g。
Comparative example 2
Comparative example 2 the specific embodiment is the same as example 3 except that no thickener is added.
Comparative example 3
Comparative example 3 a specific embodiment is the same as example 3 except that no dispersant is added.
Evaluation of Performance
The performance test of the bacteriostatic formaldehyde-removing purifying agent prepared in the examples 1-3 and the comparative examples 1-3 was carried out.
Referring to table 1, table 1 shows performance test data of the bacteriostatic formaldehyde-removing purifiers prepared in examples 1 to 3 and comparative examples 1 to 3.
(1) Formaldehyde removal performance test (30 ℃):
measuring the formaldehyde removal rate of the antibacterial formaldehyde-removing purifying agent prepared in the embodiments 1-3 and the comparative examples 1-2 according to GB/T2761-2006 method for measuring the purifying effect of indoor air purification products;
(2) And (3) testing antibacterial performance:
to staphylococcus containsThe amount is 0.52 × 10 7 1 mu L of the bacteriostatic formaldehyde-removing purifying agent prepared in the examples 1-3 and the comparative examples 1-3 was added into the cuvette, and the content of staphylococcus in the cuvette was measured after 7 days.
TABLE 1
Claims (10)
1. An antibacterial formaldehyde-removing purifying agent, which is characterized in that, the preparation raw materials comprise the following components in parts by weight: 5-8 parts of nano metal oxide, 1-4 parts of metal liquid, 2-5 parts of carrier, 2-8 parts of plant extract, 15-25 parts of adsorbent, 1-5 parts of thickening agent, 2-5 parts of dispersing agent and 200-250 parts of water.
2. The antibacterial formaldehyde-removing purifying agent as claimed in claim 1, wherein the nano metal oxide is at least one of nano iron oxide, nano aluminum oxide, nano zinc oxide and nano titanium dioxide.
3. The antibacterial formaldehyde-removing purifying agent as claimed in claim 1, wherein the nano metal oxide is nano titanium dioxide and nano zinc oxide, and the weight ratio of the nano titanium dioxide to the nano zinc oxide is (1.5-2.5): (0.5:1.5).
4. The antibacterial formaldehyde-removing purifying agent as claimed in claim 3, wherein the nano titanium dioxide is anatase nano titanium dioxide, the particle size is 5-15nm, the surface area is 50-200m 2 (ii)/g; the nano zinc oxide has a particle size of 20-60nm and a surface area of 40-80m 2 /g。
5. The antibacterial formaldehyde-removing purifying agent as claimed in claim 1, wherein the carrier is at least one of Najing stone powder, rui stone powder, attapulgite, sepiolite, tourmaline and zeolite.
6. The antibacterial formaldehyde-removing purification agent as claimed in claim 1, wherein the thickener is at least one of lauryl alcohol, linoleic acid, fatty alcohol-polyoxyethylene ether sulfate, hydroxypropyl methyl cellulose and chitosan.
7. The antibacterial formaldehyde-removing purifying agent as claimed in claim 1, wherein the thickening agent is hydroxypropyl methylcellulose and chitosan, and the weight ratio of the hydroxypropyl methylcellulose to the chitosan is (1.0-3.0): (0.5-1.5).
8. The antibacterial formaldehyde-removing purifying agent as claimed in claim 1, wherein the dispersant is at least one of sodium dodecylbenzene sulfonate, polyvinylpyrrolidone and phenolic resin.
9. The antibacterial formaldehyde-removing purifying agent as claimed in claim 1, wherein the dispersant is sodium dodecylbenzene sulfonate and polyvinylpyrrolidone, and the weight ratio of the sodium dodecylbenzene sulfonate to the polyvinylpyrrolidone is (0.2-1.0): (1.0-2.0).
10. A method for preparing the antibacterial formaldehyde-removing purifying agent as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
(1) Fully grinding the nano metal oxide and the carrier in a grinding machine for 10-20min to obtain uniformly mixed particles, wherein the rotating speed of the grinding machine is 1500-2000r/min;
(2) Weighing the metal liquid, the plant extract, the adsorbent, the thickening agent and the dispersing agent according to the proportion, putting into water, and fully stirring for 20-40min at 90-120 ℃ to obtain a uniformly mixed mixture;
(3) And (3) adding the mixed particles in the step (1) into the mixture in the step (2), and uniformly stirring at 40-80 ℃ to obtain the antibacterial formaldehyde-removing purifying agent.
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