CN115463538A - Formaldehyde-removing odor-removing composition and preparation method and application thereof - Google Patents
Formaldehyde-removing odor-removing composition and preparation method and application thereof Download PDFInfo
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Abstract
The application provides an aldehyde-removing odor-purifying composition, a preparation method and application thereof, and relates to the technical field of air purification. The aldehyde-removing odor-removing composition comprises the following raw materials in parts by weight: 10-30 parts of photocatalyst, 10-30 parts of biological decomposition enzyme, 20-40 parts of magnesium aluminum silicate, 5-15 parts of chitosan, 2-8 parts of chitosan, 3-9 parts of polymethacrylhydrazide, 20-50 parts of adsorbent and 3-9 parts of surfactant. The formaldehyde-removing odor-purifying composition jointly removes formaldehyde and odor molecules through multiple ways, and finally achieves a good formaldehyde-removing effect.
Description
Technical Field
The application relates to the technical field of air purification, in particular to an aldehyde-removing odor-removing composition and a preparation method and application thereof.
Background
With the development of the building industry, formaldehyde in indoor air has become a main pollutant affecting human health. The formaldehyde has great harm to the human body and seriously threatens the life of human beings, and particularly has the greatest harm to the human body in the air in winter. Formaldehyde is a highly reactive substance and has been used for building materials, furniture, and the like since long as it is a curing agent for phenol-based and melamine-based adhesives. The formaldehyde source in domestic air mainly comprises the following aspects: at present, a large amount of organic adhesives, paint and the like are used for interior decoration, and a large amount of toxic substances such as formaldehyde, benzene and the like are contained in the interior decoration; the indoor insulating material is aged under the action of light and heat and can release formaldehyde; some manufacturers use unqualified plates for pursuing profit, or use poor glue when adhering veneering materials, and the formaldehyde in the plates and the glue seriously exceeds the standard.
At present, formaldehyde and peculiar smell molecules in air are removed by photocatalysis biological enzyme or placing a formaldehyde adsorption material, the biological enzyme is a good product for removing formaldehyde, but the activity of the biological enzyme needs the photocatalyst to be used when sunlight exists or an ultraviolet lamp is set, and the formaldehyde adsorption material is placed to remove the formaldehyde, so that the formaldehyde removal odor purification composition is low in efficiency and long in required time.
Disclosure of Invention
The application aims to provide an aldehyde-removing odor-purifying composition which has a better formaldehyde-removing effect.
Another object of the present invention is to provide a method for producing an aldehyde-removing odor-removing composition, which is simple in process and can provide an aldehyde-removing odor-removing composition having stable properties.
Still another object of the present application is to provide a use of the aldehyde-removing odor-removing composition in an aldehyde-removing agent for furniture.
The technical problem to be solved by the application is solved by adopting the following technical scheme.
In one aspect, the embodiment of the application provides an aldehyde-removing odor-removing composition, which comprises the following raw materials in parts by weight: 10-30 parts of photocatalyst, 10-30 parts of biological decomposition enzyme, 20-40 parts of magnesium aluminum silicate, 5-15 parts of chitosan, 2-8 parts of chitosan, 3-9 parts of polymethacrylhydrazide, 20-50 parts of adsorbent and 3-9 parts of surfactant.
In another aspect, the present application provides a method for preparing an aldehyde-removing odor-removing composition, comprising the steps of:
adding a photocatalyst, a biological decomposition enzyme, chitosan, polymethacrylhydrazide and a surfactant into deionized water, and uniformly mixing to obtain a mixed solution;
adding aluminum magnesium silicate and an adsorbent into deionized water, uniformly mixing, standing, drying, and crushing to obtain nanoscale powder;
and (3) adding the nanoscale powder into the mixed solution, uniformly mixing, and performing centrifugal drying to obtain the finished product of the aldehyde-removing odor-removing composition.
In another aspect, the present application provides a use of an aldehyde-removing odor-removing composition in a furniture aldehyde-removing agent.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
the aldehyde-removing odor-eliminating composition of the present application uses a photocatalyst, a biological decomposition enzyme, magnesium aluminum silicate, chitosan, polymethacrylhydrazide, an adsorbent and a surfactant as raw materials, the photocatalyst has a hollow porous structure and is a semiconductor particle having photocatalytic activity, when light (ultraviolet rays and the like) is irradiated to the semiconductor particle, electrons are released from the surface of the semiconductor particle to generate holes, and the generated holes are released from hydroxide ions (OH) around the semiconductor particle - ) And H 2 O molecules and the like take electrons and oxidize the electrons into hydroxyl radicals and the like, the hydroxyl radicals have extremely strong oxidizing ability, and the organic matters are decomposed by taking electrons from the organic matters such as formaldehyde and the like and are finally degraded into H 2 O、CO 2 The harmful micromolecule substances such as the biological decomposition enzyme and the free formaldehyde in the air are fully contacted, the atomic structure of the biological decomposition enzyme can be damaged, the effect of quickly removing the formaldehyde is achieved, but the biological decomposition enzyme has short aging, so the biological decomposition enzyme is used for assisting the photocatalyst, the dispersion degree of the photocatalyst and the biological decomposition enzyme is improved by the surfactant, the formaldehyde content in the air is quickly reduced, the chitosan and the chitosan can play a role in forming a film and removing the formaldehyde, the formaldehyde-removing odor-purifying composition can be quickly formed into the film on the surface of furniture, the formaldehyde and odor molecules are conveniently enriched, the polymethacrylhydrazide can be used as a formaldehyde digesting agent and reacts with the formaldehyde to form an acylhydrazone structure, the formaldehyde is digested and removed, the aluminum magnesium silicate can be used as a carrier, the specific surface area is very large, the micropore system is developed, the contact area of the adsorbent and the formaldehyde can be increased, and the adsorption efficiency of the adsorbent on the formaldehyde is improved.
The formaldehyde-removing odor-purifying composition firstly uses magnesium aluminum silicate as a carrier, the surface area of an adsorbent is increased, formaldehyde in an indoor environment is enriched, then the adsorbed formaldehyde is rapidly removed through catalytic oxidation of a photocatalyst and a biological decomposition enzyme under the illumination condition, and under the condition of no illumination, the adsorbed formaldehyde is digested through polymethacrylhydrazide, the formaldehyde and odor molecules are jointly eliminated through multiple ways, and finally a better formaldehyde-removing effect is achieved.
The preparation method is simple and convenient in flow, firstly, mixed liquor with stable property and high dispersity is prepared, then, the aluminum magnesium silicate and the adsorbent are uniformly mixed to prepare the nano-scale powder, so that the aluminum magnesium silicate and the adsorbent are fully reacted, the surface area of the adsorbent is increased, then, the nano-scale powder is added into the mixed liquor, and the aldehyde-removing odor-removing composition which can be stored for a long time and has stable performance is obtained by centrifugal drying.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to specific examples.
The embodiment of the application provides an aldehyde-removing and odor-removing composition, which comprises 10-30 parts of photocatalyst, 10-30 parts of biological decomposition enzyme, 20-40 parts of magnesium aluminum silicate, 5-15 parts of chitosan, 2-8 parts of chitosan, 3-9 parts of polymethacrylhydrazide, 20-50 parts of adsorbent and 3-9 parts of surfactant.
In the above-described embodiment, a photocatalyst, a biological decomposition enzyme, magnesium aluminum silicate, chitosan, polymethacrylhydrazide, an adsorbent, and a surfactant are used as raw materials, the photocatalyst is a semiconductor particle having a hollow-pore structure and having photocatalytic activity, and when light (ultraviolet rays or the like) is irradiated to the semiconductor particle, electrons are released from the surface of the semiconductor particle to generate holes, and the generated holes are released from hydroxide ions (OH) around the semiconductor particle - ) And H 2 O molecules and the like take electrons and oxidize them into hydroxyl radicals and the like, which have extremely strong oxidizing ability and decompose organic substances such as formaldehyde by taking electrons from the organic substancesFinally degraded to H 2 O、CO 2 The harmful micromolecule substances such as the biological decomposition enzyme and the free formaldehyde in the air are fully contacted, the atomic structure of the biological decomposition enzyme can be damaged, the effect of quickly removing the formaldehyde is achieved, but the biological decomposition enzyme has short aging, so the biological decomposition enzyme is used for assisting the photocatalyst, the dispersion degree of the photocatalyst and the biological decomposition enzyme is improved by the surfactant, the formaldehyde content in the air is quickly reduced, the chitosan and the chitosan can play a role in forming a film and removing the formaldehyde, the formaldehyde-removing odor-purifying composition can be quickly formed into the film on the surface of furniture, the formaldehyde and odor molecules are conveniently enriched, the polymethacrylhydrazide can be used as a formaldehyde digesting agent and reacts with the formaldehyde to form an acylhydrazone structure, the formaldehyde is digested and removed, the aluminum magnesium silicate can be used as a carrier, the specific surface area is very large, the micropore system is developed, the contact area of the adsorbent and the formaldehyde can be increased, and the adsorption efficiency of the adsorbent on the formaldehyde is improved.
In some embodiments of the present application, the photocatalyst is a mixture of nano manganese dioxide, nano titanium dioxide and nano titanium phosphate.
In some embodiments of the present application, the biological decomposition enzyme is a mixture of formaldehyde dehydrogenase and formate dehydrogenase. The formaldehyde dehydrogenase can assist in converting formaldehyde into formic acid, and the formate dehydrogenase can assist in converting formic acid into carbon dioxide, so that the formaldehyde is degraded.
In some embodiments of the present application, the adsorbent is one or more of white mud, activated carbon, silica, kaolin, bentonite, and diatom mud
In some embodiments of the present application, the surfactant is one or more selected from the group consisting of dodecyl dimethyl amine oxide, sodium dodecyl sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate, and fatty alcohol-polyoxyethylene ether.
The embodiment of the application provides a preparation method of an aldehyde-removing odor-removing composition, which comprises the following steps:
adding a photocatalyst, a biological decomposition enzyme, chitosan, polymethacrylhydrazide and a surfactant into deionized water, and uniformly mixing to obtain a mixed solution;
adding magnesium aluminum silicate and an adsorbent into deionized water, uniformly mixing, standing, drying, and crushing to obtain nanoscale powder;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and performing centrifugal drying to obtain the finished product of the aldehyde-removing odor-removing composition.
In the embodiment, the preparation method is simple and convenient in process, firstly, the mixed solution with stable property and high dispersity is prepared, then, the aluminum magnesium silicate and the adsorbent are uniformly mixed to prepare the nano-scale powder, the aluminum magnesium silicate and the adsorbent are fully reacted, the surface area of the adsorbent is increased, the nano-scale powder is added into the mixed solution, and the aldehyde-removing odor-removing composition with long-term storage and stable performance is obtained by centrifugal drying.
In some embodiments of the present application, the magnesium aluminum silicate and the adsorbent are added to deionized water under stirring and allowed to stand for 12-20 hours.
In some embodiments of the present application, in the drying step, the drying time is 2 to 4 hours, and the drying temperature is 140 to 180 ℃.
In some embodiments of the present application, upon pulverization, the pulverization is carried out in a nano-pulverizer for 10-20min.
The embodiment of the application also provides application of the aldehyde-removing odor-removing composition in furniture aldehyde-removing agents.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
An aldehyde-removing odor-removing composition prepared by the following steps:
adding 20g of photocatalyst, 20g of biological decomposition enzyme, 10g of chitosan, 5g of chitosan, 6g of polymethacrylic hydrazide and 6g of surfactant into 500g of deionized water, and uniformly mixing to obtain a mixed solution;
the photocatalyst is formed by mixing nano manganese dioxide, nano titanium dioxide and nano titanium phosphate;
the biological decomposition enzyme is formed by mixing formaldehyde dehydrogenase and formate dehydrogenase;
the surfactant is a mixture of dodecyl dimethyl amine oxide, sodium dodecyl sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether;
adding 30g of magnesium aluminum silicate and 35g of adsorbent into 300g of deionized water under the condition of stirring, uniformly mixing, standing for 16h, placing in a dryer, drying for 3h at 160 ℃, and then crushing for 15min in a nano crusher to obtain nano powder;
the adsorbent is prepared by mixing white mud, activated carbon, silica, kaolin, bentonite and diatom mud;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and centrifugally spin-drying in a centrifugal spin-drying machine to obtain the finished product of the aldehyde-removing odor-removing composition.
The aldehyde-removing odor-removing composition is applied to furniture, and specifically comprises the following components: adding water into the formaldehyde-removing odor-removing composition to prepare an impregnation liquid with the mass concentration of 4.5%, soaking the melamine impregnated bond paper in the impregnation liquid for 6 hours, taking out the melamine impregnated bond paper, drying the melamine impregnated bond paper, covering the melamine impregnated bond paper on the surface of a furniture base material, and pressing the melamine impregnated bond paper at 190 ℃ for 30 seconds to remove formaldehyde and remove odor of furniture.
Example 2
An aldehyde-removing odor-removing composition prepared by the following steps:
adding 10g of photocatalyst, 10g of biological decomposition enzyme, 5g of chitosan, 2g of chitosan, 3g of polymethacrylhydrazide and 3g of surfactant into 500g of deionized water, and uniformly mixing to obtain a mixed solution;
the photocatalyst is formed by mixing nano manganese dioxide, nano titanium dioxide and nano titanium phosphate;
the biological decomposition enzyme is formed by mixing formaldehyde dehydrogenase and formate dehydrogenase;
the surfactant is a mixture of sodium dodecyl sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether;
adding 20g of magnesium aluminum silicate and 20g of adsorbent into 300g of deionized water under the condition of stirring, uniformly mixing, standing for 12h, placing in a dryer, drying for 2h at 140 ℃, and then crushing in a nano crusher for 10min to obtain nano powder;
the adsorbent is prepared by mixing activated carbon, silica, kaolin, bentonite and diatom ooze;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and centrifugally spin-drying in a centrifugal spin-drying machine to obtain the finished product of the aldehyde-removing odor-removing composition.
The aldehyde-removing odor-removing composition is applied to furniture, and specifically comprises the following components: adding water into the formaldehyde-removing odor-removing composition to prepare an impregnation liquid with the mass concentration of 3%, soaking the melamine impregnated bond paper in the impregnation liquid for 4 hours, taking out the melamine impregnated bond paper, drying the melamine impregnated bond paper, covering the melamine impregnated bond paper on the surface of a furniture base material, and pressing the melamine impregnated bond paper at 180 ℃ for 25 seconds to remove formaldehyde and remove odor of furniture.
Example 3
An aldehyde-removing odor-removing composition prepared by the following steps:
adding 30g of photocatalyst, 30g of biological decomposition enzyme, 15g of chitosan, 8g of chitosan, 9g of polymethacrylhydrazide and 9g of surfactant into 500g of deionized water, and uniformly mixing to obtain a mixed solution;
the photocatalyst is formed by mixing nano manganese dioxide, nano titanium dioxide and nano titanium phosphate;
the biological decomposition enzyme is formed by mixing formaldehyde dehydrogenase and formate dehydrogenase;
the surfactant is a mixture of dodecyl dimethyl amine oxide dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether;
adding 40g of aluminum magnesium silicate and 50g of adsorbent into 300g of deionized water under the stirring condition, uniformly mixing, standing for 20h, placing in a dryer, drying for 4h at 180 ℃, and then crushing in a nano crusher for 20min to obtain nano powder;
the adsorbent is prepared by mixing silica, kaolin, bentonite and diatom ooze;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and centrifugally spin-drying in a centrifugal spin-drying machine to obtain the finished product of the aldehyde-removing odor-removing composition.
The aldehyde-removing odor-removing composition is applied to furniture, and specifically comprises the following components: adding water into the formaldehyde-removing odor-removing composition to prepare an impregnation liquid with the mass concentration of 6%, soaking the melamine impregnated bond paper in the impregnation liquid for 8 hours, taking out the melamine impregnated bond paper, drying the melamine impregnated bond paper, covering the melamine impregnated bond paper on the surface of a furniture base material, and pressing the melamine impregnated bond paper on the surface of the furniture base material at 120 ℃ for 35 seconds to remove formaldehyde and remove odor of furniture.
Example 4
An aldehyde-removing odor-removing composition prepared by the following steps:
adding 18g of photocatalyst, 12g of biological decomposition enzyme, 7g of chitosan, 3g of chitosan, 7g of polymethacrylic hydrazide and 7g of surfactant into 480g of deionized water, and uniformly mixing to obtain a mixed solution;
the photocatalyst is formed by mixing nano manganese dioxide, nano titanium dioxide and nano titanium phosphate;
the biological decomposition enzyme is formed by mixing formaldehyde dehydrogenase and formate dehydrogenase;
the surfactant is a mixture of dodecyl dimethyl amine oxide, dodecyl sodium sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether;
adding 35g of magnesium aluminum silicate and 28g of adsorbent into 320g of deionized water under the stirring condition, uniformly mixing, standing for 14h, placing in a dryer, drying for 3h at 170 ℃, and then crushing for 16min in a nano crusher to obtain nano powder;
the adsorbent is prepared by mixing white mud, activated carbon, bentonite and diatom mud;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and centrifugally spin-drying in a centrifugal spin-drying machine to obtain the finished product of the aldehyde-removing odor-removing composition.
The aldehyde-removing odor-removing composition is applied to furniture, and specifically comprises the following components: adding water into the formaldehyde-removing odor-removing composition to prepare an impregnation liquid with the mass concentration of 5%, soaking the melamine impregnated bond paper in the impregnation liquid for 5h, taking out the melamine impregnated bond paper, drying the melamine impregnated bond paper, covering the melamine impregnated bond paper on the surface of the furniture base material, and pressing the melamine impregnated bond paper at 180 ℃ for 28s to remove formaldehyde and remove odor of the furniture.
Example 5
An aldehyde-removing odor-removing composition prepared by the following steps:
adding 18g of photocatalyst, 16g of biological decomposition enzyme, 8g of chitosan, 6g of polymethacrylhydrazide and 6g of surfactant into 450g of deionized water, and uniformly mixing to obtain a mixed solution;
the photocatalyst is formed by mixing nano manganese dioxide, nano titanium dioxide and nano titanium phosphate;
the biological decomposition enzyme is formed by mixing formaldehyde dehydrogenase and formate dehydrogenase;
the surfactant is a mixture of dodecyl dimethyl amine oxide, dodecyl sodium sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether;
adding 25g of magnesium aluminum silicate and 22g of adsorbent into 320g of deionized water under the condition of stirring, uniformly mixing, standing for 16h, placing in a dryer, drying for 2.5h at 150 ℃, and then crushing for 16min in a nano crusher to obtain nano powder;
the adsorbent is prepared by mixing activated carbon, silica, kaolin and diatom ooze;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and centrifugally spin-drying in a centrifugal spin-drying machine to obtain the finished product of the aldehyde-removing odor-removing composition.
The aldehyde-removing odor-removing composition is applied to furniture, and specifically comprises the following components: adding water into the formaldehyde-removing odor-removing composition to prepare an impregnation liquid with the mass concentration of 5%, soaking the melamine impregnated bond paper in the impregnation liquid for 5h, taking out the melamine impregnated bond paper, drying the melamine impregnated bond paper, covering the melamine impregnated bond paper on the surface of the furniture base material, and pressing the melamine impregnated bond paper at 190 ℃ for 28s to remove formaldehyde and remove odor of the furniture.
Example 6
An aldehyde-removing odor-removing composition prepared by the following steps:
adding 27g of photocatalyst, 27g of biological decomposition enzyme, 11g of chitosan, 3g of chitosan, 5g of polymethacrylhydrazide and 3g of surfactant into deionized water, and uniformly mixing to obtain a mixed solution;
the photocatalyst is formed by mixing nano manganese dioxide, nano titanium dioxide and nano titanium phosphate;
the biological decomposition enzyme is formed by mixing formaldehyde dehydrogenase and formate dehydrogenase;
the surfactant is a mixture of sodium dodecyl sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether;
adding 35g of magnesium aluminum silicate and 35g of adsorbent into deionized water under the condition of stirring, uniformly mixing, standing for 18h, placing in a dryer, drying for 4h at 145 ℃, and then crushing for 15min in a nano crusher to obtain nano powder;
the adsorbent is prepared by mixing activated carbon, silica, bentonite and diatom ooze;
and (3) adding the nanoscale powder into the mixed solution, uniformly mixing, and then placing the mixture into a centrifugal drier for centrifugal drying to obtain the finished product of the aldehyde-removing odor-removing composition.
The aldehyde-removing odor-removing composition is applied to furniture, and specifically comprises the following components: adding water into the formaldehyde-removing odor-removing composition to prepare an impregnation liquid with the mass concentration of 5%, soaking the melamine impregnated bond paper in the impregnation liquid for 5h, taking out the melamine impregnated bond paper, drying the melamine impregnated bond paper, covering the melamine impregnated bond paper on the surface of a furniture base material, and pressing the melamine impregnated bond paper on the surface of the furniture base material for 32s at 190 ℃ to remove formaldehyde and remove odor of furniture.
Examples of the experiments
The formaldehyde-removing odor-removing composition prepared in the examples of the present application was measured for its effect of removing formaldehyde from the room according to "method for measuring purification effect of QBT 2761-2006-indoor air purification product", and the measurement results are shown in table 1 below.
TABLE 1
As can be seen from Table 1, the formaldehyde removing odor eliminating composition prepared in the examples of the present application can achieve a formaldehyde removal rate of 90% or more within 30min, which indicates that the formaldehyde removing odor eliminating composition has the characteristic of removing formaldehyde harmful gas efficiently and rapidly.
In summary, the present application provides an aldehyde-removing odor-eliminating composition, which is a semiconductor particle having a hollow-pore structure and photocatalytic activity, using a photocatalyst, a biological decomposition enzyme, magnesium aluminum silicate, chitosan, polymethacrylhydrazide, an adsorbent and a surfactant as raw materials, wherein when light (ultraviolet rays or the like) is irradiated to the semiconductor particle, electrons are released from the surface of the semiconductor particle to generate holes, and the generated holes are derived from the surrounding hydroxide ions (OH) ions - ) And H 2 O molecules and the like take electrons and oxidize the electrons into hydroxyl radicals and the like, the hydroxyl radicals have extremely strong oxidizing ability, and the organic matters are decomposed by taking electrons from the organic matters such as formaldehyde and the like and are finally degraded into H 2 O、CO 2 The harmful micromolecule substances such as the biological decomposition enzyme and the free formaldehyde in the air are fully contacted, the atomic structure of the biological decomposition enzyme can be damaged, the effect of quickly removing the formaldehyde is achieved, but the biological decomposition enzyme has short aging, so the biological decomposition enzyme is used for assisting the photocatalyst, the dispersion degree of the photocatalyst and the biological decomposition enzyme is improved by the surfactant, the formaldehyde content in the air is quickly reduced, the chitosan and the chitosan can play a role in forming a film and removing the formaldehyde, the formaldehyde-removing odor-purifying composition can be quickly formed into the film on the surface of furniture, the formaldehyde and odor molecules are conveniently enriched, the polymethacrylhydrazide can be used as a formaldehyde digesting agent and reacts with the formaldehyde to form an acylhydrazone structure, the formaldehyde is digested and removed, the aluminum magnesium silicate can be used as a carrier, the specific surface area is very large, the micropore system is developed, the contact area of the adsorbent and the formaldehyde can be increased, and the adsorption efficiency of the adsorbent on the formaldehyde is improved.
In addition, the formaldehyde-removing odor-purifying composition firstly uses magnesium aluminum silicate as a carrier, increases the surface area of an adsorbent, enriches formaldehyde in an indoor environment, then uses photocatalyst and biological decomposition enzyme for catalytic oxidation under the illumination condition to quickly remove the adsorbed formaldehyde, and uses polymethacrylhydrazide for digesting the adsorbed formaldehyde under the condition of no illumination, and jointly eliminates the formaldehyde and odor molecules through various ways, thereby finally achieving a better formaldehyde-removing effect.
The application also provides a preparation method of the aldehyde-removing odor-cleaning composition, the preparation method is simple and convenient in process, firstly, mixed liquor with stable property and high dispersity is prepared, then, the aluminum magnesium silicate and the adsorbent are uniformly mixed to prepare nano-scale powder, the aluminum magnesium silicate and the adsorbent are fully reacted, the surface area of the adsorbent is increased, then, the nano-scale powder is added into the mixed liquor, and the aldehyde-removing odor-cleaning composition which can be stored for a long time and has stable performance is obtained by centrifugal drying.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (10)
1. The aldehyde-removing odor-removing composition is characterized by comprising the following raw materials in parts by weight: 10-30 parts of photocatalyst, 10-30 parts of biological decomposition enzyme, 20-40 parts of magnesium aluminum silicate, 5-15 parts of chitosan, 2-8 parts of chitosan, 3-9 parts of polymethacrylhydrazide, 20-50 parts of adsorbent and 3-9 parts of surfactant.
2. The composition of claim 1, wherein the photocatalyst is a mixture of nano manganese dioxide, nano titanium dioxide and nano titanium phosphate.
3. The composition of claim 1, wherein the enzyme is a mixture of formaldehyde dehydrogenase and formate dehydrogenase.
4. The composition as claimed in claim 1, wherein the adsorbent is one or more selected from white mud, activated carbon, silica, kaolin, bentonite, and diatom ooze.
5. The aldehyde-removing odor-removing composition as defined in claim 1 wherein said surfactant is one or more of dodecyl dimethyl amine oxide, sodium dodecyl sulfate, dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate and fatty alcohol polyoxyethylene ether.
6. A method for preparing the aldehyde-removing odor-removing composition as defined in any one of claims 1 to 5, comprising the steps of:
adding a photocatalyst, a biological decomposition enzyme, chitosan, polymethacrylhydrazide and a surfactant into deionized water, and uniformly mixing to obtain a mixed solution;
adding aluminum magnesium silicate and an adsorbent into deionized water, uniformly mixing, standing, drying, and crushing to obtain nanoscale powder;
and adding the nanoscale powder into the mixed solution, uniformly mixing, and performing centrifugal drying to obtain the finished product of the aldehyde-removing odor-removing composition.
7. The method for preparing the aldehyde-removing odor-removing composition as claimed in claim 6, wherein the magnesium aluminum silicate and the adsorbent are added to the deionized water under stirring and left for 12-20 hours.
8. The method for preparing the aldehyde-removing odor-removing composition according to claim 6, wherein in the drying step, the drying time is 2 to 4 hours and the drying temperature is 140 to 180 ℃.
9. The method for preparing the aldehyde-removing odor-removing composition according to claim 6, wherein the pulverization is carried out in a nano-pulverizer for 10-20min.
10. Use of the aldehyde-removing odor-removing composition as defined in any one of claims 1 to 5 in an aldehyde-removing agent for furniture.
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