CN114289008A - Deodorizing and odor-removing liquid suitable for photocatalytic sustained release type and preparation method thereof - Google Patents

Deodorizing and odor-removing liquid suitable for photocatalytic sustained release type and preparation method thereof Download PDF

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CN114289008A
CN114289008A CN202210027161.4A CN202210027161A CN114289008A CN 114289008 A CN114289008 A CN 114289008A CN 202210027161 A CN202210027161 A CN 202210027161A CN 114289008 A CN114289008 A CN 114289008A
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photocatalytic
essential oil
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molecule
odor
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CN114289008B (en
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曾和平
冯光
胡梦云
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Chongqing Huapu Environmental Protection Technology Co ltd
Chongqing Huapu Quantum Technology Co ltd
Chongqing Menghe Biotechnology Co ltd
East China Normal University
Chongqing Institute of East China Normal University
Shanghai Langyan Optoelectronics Technology Co Ltd
Yunnan Huapu Quantum Material Co Ltd
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East China Normal University
Chongqing Institute of East China Normal University
Shanghai Langyan Optoelectronics Technology Co Ltd
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Abstract

The invention discloses a photocatalytic sustained-release type odor removing and purifying liquid which comprises the following raw materials in parts by weight: 98-100 parts of deionized water; 0.3-1 of graphene mesoporous quantum photocatalytic material; 0.5-1 part of sodium polyacrylate; 9-10 parts of fumed silica; acetic acid solution (1%) 0.6-0.8; 0.6 to 0.8 of silane coupling agent; 0.2-0.25 of aroma polar molecules; diluting the original liquid by 8-10 times to obtain the deodorizing and odor-removing liquid. The invention also discloses a preparation method of the deodorizing and odor-removing liquid suitable for photocatalytic sustained release. The fragrance polar molecule not only promotes the separation and diffusion of the photocatalytic photon-generated carriers, but also can adsorb a large amount of organic molecules and release fragrance. The method provided by the invention is simple to operate, high in photocatalytic activity, durable in effect, green and safe, and capable of efficiently adsorbing and continuously decomposing formaldehyde and purifying air.

Description

Deodorizing and odor-removing liquid suitable for photocatalytic sustained release type and preparation method thereof
Technical Field
The invention relates to a novel photocatalytic material, in particular to a deodorizing and odor-removing liquid suitable for a photocatalytic sustained release type and a preparation method thereof.
Background
With the progress of society and the improvement of living standard of people, the pursuit of the public for the quality of life is correspondingly improved. In the application of indoor air purification, the photocatalytic air purification product is widely used for indoor air purification due to the advantages of green, environmental protection and high efficiency. However, people hope that the photocatalytic product can generate fragrance while decomposing harmful indoor waste gas, however, the photocatalytic air purification products on the market only can realize the decomposition function of harmful gas, and fish and bear paw cannot be obtained at the same time. Therefore, the photocatalytic air purification product which can not only rapidly decompose indoor harmful gas, but also continuously generate fragrance is realized, and the photocatalytic air purification product has important significance for expanding the application of photocatalytic materials and improving the living standard of people. The essence is artificial concentrated aromatic oil simulating the smell of fruits and natural perfume and is an artificial perfume. The edible essence is prepared by carefully blending natural and natural equivalent spices and synthetic spices according to the fragrance of natural food.
Disclosure of Invention
The invention provides an odor removing and purifying liquid suitable for a photocatalytic sustained release type and a preparation method thereof, aiming at combining essential oil molecules with a photocatalytic material, not only exerting the function of sustained release of fragrance of the essential oil molecules, but also exerting the decomposition function of the photocatalytic material formaldehyde and volatile organic compounds.
The invention adopts the following technical scheme:
a deodorizing and odor-removing liquid suitable for a photocatalytic sustained release type comprises a raw liquid composed of the following raw materials in parts by weight:
98-100 parts of deionized water;
0.3-1 of graphene mesoporous quantum photocatalytic material;
0.5-1 part of sodium polyacrylate;
9-10 parts of fumed silica;
acetic acid solution (1%) 0.6-0.8;
0.6 to 0.8 of silane coupling agent;
0.2-0.25 of aroma polar molecules;
diluting the original liquid by 8-10 times to obtain the deodorizing and odor-removing liquid.
As a preferable scheme of the invention, the deodorizing and odor-removing liquid suitable for the photocatalytic sustained release type comprises the following raw liquid in parts by weight:
deionized water 99;
0.7 of graphene mesoporous quantum photocatalytic material;
0.75 parts of sodium polyacrylate;
9.5 of fumed silica;
0.7 of acetic acid solution (1%);
0.7 parts of silane coupling agent;
0.23 of fragrant polar molecule;
diluting the original liquid by 8-10 times to obtain the deodorizing and odor-removing liquid.
A preparation method of an odor removing and purifying liquid suitable for a photocatalytic sustained release type comprises the following steps:
1) preparation of solution A
The solution A comprises the following raw materials in parts by weight: 96-98 parts of deionized water and 0.3-1 part of graphene mesoporous quantum photocatalytic material, stirring at a high speed for 30-60 minutes, and uniformly stirring and mixing;
2) preparation of solution B
The solution B comprises the following raw materials in parts by weight: 2-4 parts of deionized water and 0.5-1 part of sodium polyacrylate, stirring at a high speed for 30-60 minutes, and uniformly stirring and mixing;
3) pouring the solution B into the solution A, adding 9-10 parts by weight of fumed silica, stirring at a high speed for 30-35 minutes, and after stirring uniformly, performing ultrasonic treatment and sanding for 50-60 minutes;
4) adding silane coupling agent 0.6-0.8, acetic acid solution (1%) 0.6-0.8, and fragrant polar molecule 0.2-0.25, stirring for 60-120 min;
5) finally, 8-10 times of dilution is carried out.
As a preferred aspect of the invention, the sanding apparatus parameters are: the medium filling rate: 70-80%; feeding amount: 20-25L/min.
As a preferable aspect of the present invention, the ultrasound parameters are: amplitude 70-80 and power 1800-2000W.
As a preferable scheme of the present invention, the aroma polar molecule is a plant-extracted essential oil molecule, and the aroma polar molecule includes one or a mixture of at least two of a crystal sugar orange essential oil molecule, a mint essential oil molecule, a lavender essential oil molecule, a rose essential oil molecule, a grape seed essential oil molecule, an osmanthus fragrans essential oil molecule, a cedar essential oil molecule, a sandalwood essential oil molecule, a clove essential oil molecule, a chamomile essential oil molecule, a vetiver essential oil molecule, a lemon grass essential oil molecule, a spearmint essential oil molecule, and a honeysuckle essential oil molecule; preferably, the crystal sugar orange essential oil molecules.
As a preferable scheme of the invention, the aroma polar molecule is adhered to the surface of the photocatalytic material, and plays a role as a photogenerated electron-hole pair recombination center in the photocatalytic reaction process, so that the directional transfer and separation efficiency of the photogenerated electron-hole pair are promoted, and the probability that a photogenerated carrier is transferred to the surface of the photocatalytic material and contacts with organic pollution molecules is increased, thereby improving the decomposition activity of the photocatalytic material.
As a preferred scheme of the invention, the aroma polar molecules have polar bonds, so that the surface adsorption energy of the photocatalytic material is promoted to be effectively improved, a large number of organic molecules can be quickly adsorbed, and the decomposition reaction of photocatalytic organic matters is promoted; polar bonds include surface hydroxyl, carboxyl, and carbonyl groups.
As a preferable scheme of the invention, the graphene mesoporous quantum photocatalytic material has visible light absorption, a photoresponse interval of 200-1200nm and a large specific surfaceProduct: 200-500m2(ii)/g, size is 0.2-2 um; the graphene mesoporous quantum photocatalytic material is specifically a graphene-titanium dioxide photocatalytic material.
In a preferred embodiment of the present invention, the aromatic polar molecules are adhered to the surface of the graphene mesoporous quantum photocatalytic material nanoparticles by an impregnation method to form an organic-inorganic heterojunction, i.e., a core-shell structure photocatalytic material of aromatic polar molecules-graphene titanium dioxide, and the thickness of the shell formed by the aromatic polar molecules is 1-10 nm.
Compared with the prior art, the invention has the following technical effects:
1) the invention discloses an odor removing and purifying liquid suitable for a photocatalytic sustained release type, which is doped with a fragrance polar molecule, wherein the fragrance polar molecule is adhered to the surface of a photocatalytic nano material, and the fragrance polar molecule plays a role in a photo-generated electron-hole pair recombination center in a photocatalytic reaction process, so that the directional transfer and separation efficiency of the photo-generated electron-hole pair are promoted, and the probability that a photo-generated carrier is transferred to the surface of a photocatalytic material and contacts with an organic pollutant molecule is increased, so that the decomposition activity of the photocatalytic material is improved. In addition, the fragrance polar molecules promote the surface adsorption of the photocatalytic material to be effectively improved due to polar bonds, so that a large number of organic molecules can be quickly adsorbed, and the decomposition reaction of photocatalytic organic matters is promoted.
2) Compared with the traditional photocatalytic air purification product, the invention also discloses a preparation method of the odor removing and purifying liquid suitable for the photocatalytic sustained release type, and the fragrance polar molecule not only promotes the separation and the diffusion of the photocatalytic photon-generated carriers, but also can adsorb a large amount of organic molecules and release fragrance. The method provided by the invention is simple to operate, high in photocatalytic activity, durable in effect, green and safe, and capable of efficiently adsorbing and continuously decomposing formaldehyde and purifying air.
Drawings
FIG. 1 is a flow chart of a method for preparing an odor elimination and purification liquid suitable for photocatalytic sustained release type;
FIG. 2 is a photocatalytic schematic diagram of a fragrance polar molecule shell-graphene titanium dioxide core heterojunction;
FIG. 3 is a scanning electron microscope image of graphene titanium oxide;
FIG. 4 is a scanning electron microscope image of a crystal sugar orange molecule-graphene titanium oxide shell-core structure;
fig. 5 is a comparison graph of dye concentration of a crystal sugar orange molecule-graphene titanium oxide shell-core structure photocatalytic material as a function of time.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
A deodorizing and odor-removing liquid suitable for a photocatalytic sustained release type comprises a raw liquid composed of the following raw materials in parts by weight:
98-100 parts of deionized water;
0.3-1 of graphene mesoporous quantum photocatalytic material;
0.5-1 part of sodium polyacrylate;
9-10 parts of fumed silica;
acetic acid solution (1%) 0.6-0.8;
0.6 to 0.8 of silane coupling agent;
0.2-0.25 of aroma polar molecules;
diluting the original liquid by 8-10 times to obtain the deodorizing and odor-removing liquid.
The following describes in detail a preparation method of a photocatalytic sustained release type deodorizing and deodorizing liquid, taking different fragrance polar molecules as examples, and the preparation process flow is shown in fig. 1, and fig. 2 is a photocatalytic principle diagram of a fragrance polar molecule shell-graphene titanium dioxide core heterojunction.
Example 1
A method for preparing an odour-removing and odour-removing liquid (crystal sugar orange flavour) suitable for photocatalytic sustained release type, the method comprising the steps of:
1) preparation of solution A
The solution A comprises the following raw materials in parts by weight: and (3) stirring the deionized water 96 and the graphene mesoporous quantum photocatalytic material at a high speed for 30 minutes, and uniformly stirring and mixing.
2) Preparation of solution B
The solution B comprises the following raw materials in parts by weight: deionized water 2 and sodium polyacrylate 0.5, stirring at high speed for 30 minutes, and stirring and mixing uniformly.
3) Pouring the solution B into the solution A, adding fumed silica 9 according to the weight part, stirring at a high speed for 30 minutes, and after stirring uniformly, performing ultrasonic treatment and sanding for 50 minutes; sanding equipment parameters: the medium filling rate: 70 percent; feeding amount: 20L/min; ultrasonic parameters: amplitude 70, power 1800W.
4) Adding 0.6 part by weight of silane coupling agent, 0.6 part by weight of acetic acid solution (1%) and 0.2 part by weight of crystal sugar orange essential oil, and stirring for 60 minutes;
5) finally 8-fold dilution was performed.
By comparing fig. 3 with fig. 4, it is found that after the essential oil of crystal sugar orange is adhered to the surface of the graphene titanium oxide nano-particles by the dipping method, a layer of thin film, i.e. a core-shell structure of crystal sugar orange-graphene titanium oxide, is formed. Through the graph of fig. 5, the photocatalytic activity of the crystal sugar orange molecular-graphene titanium oxide shell-core structure photocatalytic material is found to be superior to that of graphene titanium oxide.
Example 2
A method for preparing an odour-removing and odour-eliminating liquid (rosette type) suitable for photocatalytic sustained release type, comprising the steps of:
1) preparation of solution A
The solution A comprises the following raw materials in parts by weight: deionized water 97 and graphene mesoporous quantum photocatalytic material 0.7, stirring at high speed for 40 minutes, and stirring and mixing uniformly.
2) Preparation of solution B
The solution B comprises the following raw materials in parts by weight: deionized water 2 and sodium polyacrylate 0.75, stirring at high speed for 40 minutes, and stirring and mixing uniformly.
3) Pouring the solution B into the solution A, adding 9.5 parts by weight of fumed silica, stirring at a high speed for 32 minutes, and after stirring uniformly, performing ultrasonic treatment and sanding for 55 minutes; sanding equipment parameters: the medium filling rate: 75 percent; feeding amount: 23L/min; ultrasonic parameters: amplitude 75, power 1900W.
4) Adding silane coupling agent 0.7, acetic acid solution (1%) 0.7, and rose essential oil 0.23 by weight, and stirring for 80 min.
5) Finally, 9-fold dilution was performed.
Example 3
A method for preparing an odor-removing and deodorizing liquid (sandalwood type) suitable for a photocatalytic sustained release type, comprising the steps of:
1) preparation of solution A
The solution A comprises the following raw materials in parts by weight: deionized water 98 and the graphene mesoporous quantum photocatalytic material 1 are stirred at a high speed for 60 minutes and are stirred and mixed uniformly.
2) Preparation of solution B
The solution B comprises the following raw materials in parts by weight: deionized water 2 and sodium polyacrylate 1, stirring at high speed for 60 minutes, and stirring and mixing uniformly.
3) Pouring the solution B into the solution A, adding fumed silica 10 according to parts by weight, stirring at a high speed for 35 minutes, and after uniformly stirring, performing ultrasonic treatment and sanding for 60 minutes; sanding equipment parameters: the medium filling rate: 80 percent; feeding amount: 25L/min; ultrasonic parameters: amplitude 80, power 2000W.
4) Adding 0.8 part by weight of silane coupling agent, 0.8 part by weight of acetic acid solution (1%) and 0.25 part by weight of sandalwood essential oil, and stirring for 120 minutes;
5) finally, 10-fold dilution was performed.
Example 4
A preparation method (sweet osmanthus essential oil) of an odor removing and purifying liquid suitable for a photocatalytic sustained release type comprises the following steps:
1) preparation of solution A
The solution A comprises the following raw materials in parts by weight: and (3) stirring 96 parts of deionized water and 0.9 part of graphene mesoporous quantum photocatalytic material at a high speed for 50 minutes, and uniformly stirring and mixing.
2) Preparation of solution B
The solution B comprises the following raw materials in parts by weight: deionized water 4 and sodium polyacrylate 0.8, stirring at high speed for 50 minutes, and stirring and mixing uniformly.
3) Pouring the solution B into the solution A, adding 9.7 parts by weight of fumed silica, stirring at a high speed for 34 minutes, and after stirring uniformly, performing ultrasonic treatment and sanding for 58 minutes; sanding equipment parameters: the medium filling rate: 78 percent; feeding amount: 24L/min; ultrasonic parameters: amplitude 77, power 1950W.
4) Adding 0.75 parts of silane coupling agent, 0.75 parts of acetic acid solution (1%) and 0.24 parts of osmanthus essential oil according to the parts by weight, and stirring for 110 minutes;
5) finally, 9.5-fold dilution was performed.
Example 5 comparison of the decomposition Properties of photocatalytic sustained Release type odor removing and deodorizing liquid dye
Figure BDA0003464524510000071
Figure BDA0003464524510000081
Note: the photocatalytic dye decomposition activity means: testing the visible light catalytic activity of the photocatalytic material, specifically
1) Preparing 50ml of 20ppm rhodamine B solution, weighing 50mg of the essential oil molecule-doped graphene core-titanium oxide shell photocatalytic material, placing the two in a beaker, fully stirring, and performing adsorption balance treatment for 60 min.
2) Then, a 300W xenon lamp is turned on and placed 15cm above the beaker, the xenon lamp is provided with a 420nm filter and can serve as a visible light source, and the decomposition degradation rate of the dye is calculated within 60 min.
The photocatalytic formaldehyde decomposition efficiency is as follows:
1) preparing 20ml of 10ppm formaldehyde solution, weighing 50mg of essential oil molecule-doped graphene core-titanium oxide shell photocatalytic material, placing the two in a beaker, fully stirring, and placing the beaker in a volume of 1m3Then, the adsorption equilibrium treatment was carried out for 60 min.
2) Then, a 300W xenon lamp is turned on and placed 15cm above the beaker, the xenon lamp is provided with a 420nm filter and can serve as a visible light source, and the degradation rate of the dye formaldehyde is calculated within 60 min.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. A deodorizing and odor-removing liquid suitable for a photocatalytic sustained release type is characterized by comprising raw liquid prepared from the following raw materials in parts by weight:
98-100 parts of deionized water;
0.3-1 of graphene mesoporous quantum photocatalytic material;
0.5-1 part of sodium polyacrylate;
9-10 parts of fumed silica;
acetic acid solution (1%) 0.6-0.8;
0.6 to 0.8 of silane coupling agent;
0.2-0.25 of aroma polar molecules;
diluting the original liquid by 8-10 times to obtain the deodorizing and odor-removing liquid.
2. An odour-combating odour-cleaning liquid suitable for photocatalytic sustained release type according to claim 1, which comprises a raw liquid composed of the following raw materials in parts by weight:
deionized water 99;
0.7 of graphene mesoporous quantum photocatalytic material;
0.75 parts of sodium polyacrylate;
9.5 of fumed silica;
0.7 of acetic acid solution (1%);
0.7 parts of silane coupling agent;
0.23 of fragrant polar molecule;
diluting the original liquid by 8-10 times to obtain the deodorizing and odor-removing liquid.
3. A preparation method of an odor removing and purifying liquid suitable for a photocatalytic sustained release type is characterized by comprising the following steps:
1) preparation of solution A
The solution A comprises the following raw materials in parts by weight: 96-98 parts of deionized water and 0.3-1 part of graphene mesoporous quantum photocatalytic material, stirring at a high speed for 30-60 minutes, and uniformly stirring and mixing;
2) preparation of solution B
The solution B comprises the following raw materials in parts by weight: 2-4 parts of deionized water and 0.5-1 part of sodium polyacrylate, stirring at a high speed for 30-60 minutes, and uniformly stirring and mixing;
3) pouring the solution B into the solution A, adding 9-10 parts by weight of fumed silica, stirring at a high speed for 30-35 minutes, and after stirring uniformly, performing ultrasonic treatment and sanding for 50-60 minutes;
4) adding silane coupling agent 0.6-0.8, acetic acid solution (1%) 0.6-0.8, and fragrant polar molecule 0.2-0.25, stirring for 60-120 min;
5) finally, 8-10 times of dilution is carried out.
4. A method of preparing an odour-combating odour-cleaning liquid suitable for use in a photocatalytic sustained release formulation, according to claim 3, wherein the sanding equipment parameters are: the medium filling rate: 70-80%; feeding amount: 20-25L/min.
5. A method of preparing an odour-combating odour-cleaning liquid suitable for photocatalytic sustained release type according to claim 3, wherein the ultrasonic parameters: amplitude 70-80 and power 1800-2000W.
6. The method for preparing an odor-removing and deodorizing liquid suitable for photocatalytic sustained release type according to claim 3, wherein the fragrance polar molecule is a plant-extracted essential oil molecule, and the fragrance polar molecule comprises one or a mixture of at least two of a crystal sugar orange essential oil molecule, a mint essential oil molecule, a lavender essential oil molecule, a rose essential oil molecule, a grape seed essential oil molecule, an osmanthus essential oil molecule, a cedar essential oil molecule, a sandalwood essential oil molecule, a clove essential oil molecule, a chamomile essential oil molecule, a vetiver essential oil molecule, a lemon grass essential oil molecule, a spearmint essential oil molecule, and a honeysuckle essential oil molecule; preferably, the crystal sugar orange essential oil molecules.
7. The method for preparing an odor removing and purifying liquid suitable for photocatalytic sustained release type according to claim 3, wherein the fragrance polar molecule is adhered to the surface of the photocatalytic material, and acts as a recombination center of photo-generated electron-hole pairs during the photocatalytic reaction, thereby promoting the directional transfer and separation efficiency of the photo-generated electron-hole pairs, increasing the probability of photo-generated carriers moving to the surface of the photocatalytic material and contacting with organic pollutant molecules, and thus improving the decomposition activity of the photocatalytic material.
8. The method for preparing the odor removing and purifying liquid suitable for the photocatalytic sustained release type according to claim 3, wherein the fragrance polar molecules have polar bonds, so that the surface adsorption energy of the photocatalytic material is effectively improved, a large number of organic molecules can be rapidly adsorbed, and the decomposition reaction of photocatalytic organic matters is promoted; polar bonds include surface hydroxyl, carboxyl, and carbonyl groups.
9. The method for preparing an odor removing and deodorizing liquid suitable for photocatalytic sustained release type according to claim 3, wherein the graphene mesoporous quantum photocatalytic material has visible light absorption, a photoresponse interval of 200-1200nm, a large specific surface area: 200-500m2(ii)/g, size is 0.2-2 um; the graphene mesoporous quantum photocatalytic material is specifically a graphene-titanium dioxide photocatalytic material.
10. The method for preparing an odor-removing and deodorizing liquid suitable for photocatalytic sustained release type according to claim 3, wherein the fragrance polar molecule is adhered to the surface of the graphene mesoporous quantum photocatalytic material nanoparticle by an impregnation method to form an organic-inorganic heterojunction, i.e. a core-shell structure photocatalytic material of the fragrance polar molecule graphene titanium dioxide, and the thickness of the shell formed by the fragrance polar molecule is 1-10 nm; the aromatic polar molecule-graphene titanium dioxide shell-core structure photocatalytic material can effectively utilize visible light, namely light with the wavelength of 420-800 nm.
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