CN116212630B - Concentrated efficient deodorant and preparation method thereof - Google Patents

Abstract

The invention discloses a concentrated efficient deodorant in the field of deodorants and a preparation method thereof, wherein the concentrated efficient deodorant comprises the following components in parts by weight: 5-10 parts of functional deodorant, 1-3 parts of dispersing agent, 1-3 parts of surfactant, 8-15 parts of solvent and 15-30 parts of deionized water; the functional deodorant is a titanium dioxide porous material loaded with lithium triborate. The invention provides a concentrated efficient deodorant and a preparation method thereof, and aims to solve the problems of poor deodorizing effect and low recycling rate.

Description

A kind of concentrated high-efficiency deodorant and preparation method thereof

technical field

The invention belongs to the technical field of deodorants, in particular to a concentrated high-efficiency deodorant and a preparation method thereof.

Background technique

The organic waste in daily life is anaerobically degraded by microorganisms to produce odorous gas, the main components of which are hydrogen sulfide and ammonia. At present, the methods of chemical deodorization mainly include chemical washing, direct oxidation, catalytic combustion, etc., chemical washing method Mainly use a single acid-base gas to wash and remove the odor gas, the time cost is high, and the deodorization effect is poor. The direct oxidation method oxidizes the odor gas through strong oxides such as ozone and hydrogen peroxide, but a large amount of strong oxidants are used It is easy to cause secondary pollution to the environment. Catalytic combustion is to remove odor through catalytic oxidation reaction of catalyst under high temperature conditions. There are many limiting factors in the reaction. Titanium dioxide is commonly used as a catalyst in catalytic technology. The surface of titanium dioxide has a large number of electrons, which can reduce the recombination of electrons and holes and improve the activity of catalytic reactions. In the process of photocatalytic ammonia, the degradation products HNO ₃ and HNO ₂ accumulate on the surface of the catalyst , resulting in the reduction of titanium dioxide active sites, thereby reducing the decomposition effect on ammonia.

At present, the existing deodorant technology mainly has the following problems: the first, the titanium dioxide in the deodorant has a low decomposition effect on ammonia and hydrogen sulfide gas; the second, the titanium dioxide in the deodorant is susceptible to _HNO3 and _HNO2 Passivation, resulting in deodorant failure, reduced recycling rate.

Contents of the invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a concentrated high-efficiency deodorant and its preparation method. The method of loading lithium triborate on the material realizes the decomposition of nitrate on the surface of the titanium dioxide catalyst, and the decomposition products do not affect the deodorization effect, thereby achieving the technical effect of improving the deodorization effect and increasing the recycling rate.

In order to achieve the above object, the technical scheme adopted by the present invention is as follows: the present invention proposes a concentrated type high-efficiency deodorant, which includes the following components by weight: 5-10 parts of functional deodorant, dispersant 1-3 parts, 1-3 parts of surfactant, 8-15 parts of solvent and 15-30 parts of deionized water.

Preferably, the functional deodorant is a titanium dioxide porous material loaded with lithium triborate.

Preferably, the titanium dioxide porous material is a composite material with metal-organic framework MIL-125 as the shell and titanium dioxide as the core.

Preferably, the preparation method of the functional deodorant specifically comprises the following steps:

S1. Add the titanium source into absolute ethanol and stir to carry out a reflux reaction. After the reaction is completed, cool to room temperature to obtain a titanium dioxide colloidal particle solution;

S2. Add the titanium source into absolute ethanol, add the titanium dioxide colloidal particle solution prepared in step S1, add N,N-dimethylformamide for stirring, add terephthalic acid and mix evenly, then move into the reaction kettle, and react Finally, the product is centrifuged, washed, and dried to obtain MIL-125@TiO ₂ nanoparticles;

S3, the MIL-125@TiO ₂ nanoparticles produced in step S2 are packed in a quartz boat, and calcined in an inert atmosphere until the MIL-125 is carbonized to obtain a titanium dioxide porous material;

S4. Perform high-speed ball milling of lithium carbonate and boron oxide by ball milling, roast the powder obtained by ball milling in an air atmosphere, and perform high-speed ball milling on the roasted product again to obtain lithium triborate powder;

S5. Place the titanium dioxide porous material prepared in S3 and the lithium triborate powder prepared in step S4 in deionized water respectively, and disperse with 400W ultrasonic to obtain two kinds of suspensions, mix and stir the two suspensions, and put them in the reaction kettle The hydrothermal reaction is carried out, and the product is freeze-dried to obtain a titanium dioxide porous material loaded with lithium triborate.

Preferably, in S1, the titanium source is butyl titanate; the stirring speed is 350-450rpm/min, and the stirring time is 5-12h; the reaction temperature is 50-80°C, and the reaction time is 2-5h; The molar volume ratio of water to ethanol is 5-10mmol:100mL.

Preferably, in S2, the titanium source is butyl titanate; the molar volume ratio of the titanium source to absolute ethanol is 1-5 mmol: 100 mL; the volume ratio of N,N-dimethylformamide to absolute ethanol is 1 -2:1; the molar ratio of terephthalic acid to titanium source is 3-5:1.

Preferably, in S2, the reaction temperature in the reactor is 140-160°C, and the reaction time is 18-24h.

Preferably, in S3, the inert gas is at least one of nitrogen and argon; the calcination condition is to raise the temperature from 1-5° C. to 400-600° C. and keep the temperature for 3-8 hours.

Preferably, in S4, the mass ratio between lithium carbonate and boron oxide is 1:2-5; the speed of high-speed ball milling is 400-800rpm/min; the temperature of roasting in air atmosphere is 600-800°C, and the roasting time is 5-7h.

Preferably, in S5, the mass fraction of the lithium triborate powder is 2-5%; the temperature of the hydrothermal reaction is 150-180°C, and the hydrothermal reaction time is 18-24h.

Preferably, the dispersant is sodium polyacrylate.

Preferably, the solvent is at least one of methanol, ethanol, ethylene glycol, and propylene glycol.

Preferably, the surfactant is at least one selected from lauryl amidopropyl amine oxide, lauryl betaine and cocamidopropyl betaine.

The present invention also provides a preparation method of a concentrated high-efficiency deodorant, the specific steps comprising: weighing a functional deodorant, a dispersant and a surfactant in parts by weight and stirring them evenly in a solvent, adding deionized substances and mixing them evenly, and then using Filter through a 200-mesh filter to obtain a concentrated high-efficiency deodorant.

The beneficial effects that the present invention obtains are as follows:

The present invention can enhance the deodorizing effect of ammonia and hydrogen sulfide by loading lithium triborate on the surface of the titanium dioxide porous material, and can be used for multiple cycles, increasing the stability of the deodorizing effect of the deodorant; the present invention Among them, MIL-125 is used to modify the surface of titanium dioxide. By in-situ growth on the surface of titanium dioxide nanoparticles, the central ion Ti of MIL-125 can be effectively associated with Ti in titanium dioxide, forming a porous loose structure on the surface of titanium dioxide. The specific surface area of titanium dioxide nanoparticles is increased, which can fully contact with ammonia and hydrogen sulfide in the environment, thereby removing ammonia and hydrogen sulfide; in addition, lithium triborate is a nonlinear optical material, and its surface can A large number of electrons are generated, which can promote the photocatalytic process. The electrons on the conduction band can directly interact with the accumulated nitrate and nitrite on the surface of titanium dioxide, decompose them into nitrogen, and activate the active sites of titanium dioxide porous materials. role, thereby avoiding the decomposition of ammonia into nitrate and nitrite to passivate the active sites on the surface of titanium dioxide.

Description of drawings

Fig. 1 is the deodorant described in the embodiment of the present invention 1-5 to the removal rate result figure of ammonia;

Fig. 2 is the deodorant described in embodiment 1-5 of the present invention to the result figure of the removal rate of hydrogen sulfide gas;

Fig. 3 is the deodorant described in the embodiment of the present invention 1 to the removal rate of ammonia in six cycles;

4 is an SEM image of the titanium dioxide porous material loaded with lithium triborate described in Example 1 of the present invention.

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them; based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Unless otherwise defined, all professional and scientific terms used herein have the same meanings as are familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described can also be applied in the present invention. The preferred implementation methods and materials described in this article are only for demonstration purposes, but cannot limit the content of this application.

The experimental methods in the following examples, unless otherwise specified, are conventional methods; the test materials and test strains used in the following examples, unless otherwise specified, were purchased from commercial channels.

Example 1

A concentrated type high-efficiency deodorant, which comprises the following components by weight: 5 parts of functional deodorant, 1 part of sodium polyacrylate, 3 parts of lauramide propylamine oxide, 15 parts of ethanol and deionized 15 parts of water.

The preparation method of described functional deodorant specifically comprises the following steps:

S1. Add 5 mmol of butyl titanate into 100 mL of absolute ethanol and stir for 5 h at a speed of 350 rpm/min, and perform a reflux reaction at a reaction temperature of 50° C., and finish the reaction after 2 h. Cool to room temperature to obtain a titanium dioxide colloidal particle solution;

S2. Add 1 mmol of butyl titanate to 100 mL of absolute ethanol, add the titanium dioxide colloidal particle solution prepared in step S1, add 100 mL of N, N-dimethylformamide for stirring, add 3 mmol of terephthalic acid and mix evenly, then transfer to In the reaction kettle, after reacting at 160°C for 18 hours, the product was centrifuged, washed and dried to obtain MIL-125@TiO ₂ nanoparticles;

S3. Put the MIL-125@TiO ₂ nanoparticles prepared in step S2 in a quartz boat, raise the temperature to 600°C at 1°C/min in a nitrogen atmosphere, keep it warm for 3h, and calcinate until MIL-125 is carbonized to obtain a titanium dioxide porous material ;

S4. Perform high-speed ball milling of lithium carbonate and boron oxide with a mass ratio of 1:2 at a speed of 400rpm/min by ball milling method for 48h, and roast the powder obtained by ball milling in an air atmosphere at a roasting temperature of 800°C for 5 hours. , the product was again subjected to high-speed ball milling at a speed of 400 rpm/min for 24 hours to obtain lithium triborate powder;

S5. Place the titanium dioxide porous material prepared in S3 and the lithium triborate powder prepared in step S4 in deionized water respectively, and disperse with 400W ultrasonic to obtain two kinds of suspensions, mix and stir the two suspensions, and put them in the reaction kettle A hydrothermal reaction was carried out at a reaction temperature of 150°C and a reaction time of 24 hours. The product was freeze-dried to obtain a titanium dioxide porous material loaded with lithium triborate; the mass fraction of lithium triborate powder in the material was 2%.

The present invention also provides a preparation method of concentrated high-efficiency deodorant. The specific steps include: weighing the functional deodorant, dispersant and surfactant in the solvent at 100rpm/min for 0.5h, adding deionized Then continue to stir for 3 hours, after mixing evenly, filter with a 200-mesh filter screen to obtain a concentrated high-efficiency deodorant.

Example 2

A concentrated type high-efficiency deodorant, which comprises the following components by weight: 5 parts of functional deodorant, 2 parts of sodium polyacrylate, 2 parts of lauryl betaine, 15 parts of propylene glycol and deionized 20 parts of water.

The preparation method of described functional deodorant specifically comprises the following steps:

S1. Add 10 mmol of butyl titanate into 100 mL of absolute ethanol and stir at a speed of 400 rpm/min for 10 h to perform a reflux reaction at a reaction temperature of 60° C. After 3 h of reaction, cool to room temperature to obtain a titanium dioxide colloidal particle solution;

S2. Add 3 mmol of butyl titanate to 100 mL of absolute ethanol, add the titanium dioxide colloidal particle solution prepared in step S1, add 200 mL of N, N-dimethylformamide for stirring, add 12 mmol of terephthalic acid and mix well, then transfer to In the reaction kettle, after reacting at 150°C for 20 hours, the product was centrifuged, washed and dried to obtain MIL-125@TiO ₂ nanoparticles;

S3. Put the MIL-125@TiO ₂ nanoparticles prepared in step S2 in a quartz boat, raise the temperature to 600°C at 5°C/min in a nitrogen atmosphere, keep it warm for 3h, and calcinate until the MIL-125 is carbonized to obtain a titanium dioxide porous material ;

S4. Perform high-speed ball milling of lithium carbonate and boron oxide with a mass ratio of 1:3 at a speed of 600rpm/min by ball milling for 48 hours, and roast the powder obtained by ball milling in an air atmosphere at a roasting temperature of 600°C for 7 hours. , the product was again subjected to high-speed ball milling at a speed of 600 rpm/min for 24 hours to obtain lithium triborate powder;

S5. Place the titanium dioxide porous material prepared in S3 and the lithium triborate powder prepared in step S4 in deionized water respectively, and disperse with 400W ultrasonic to obtain two kinds of suspensions, mix and stir the two suspensions, and put them in the reaction kettle A hydrothermal reaction was carried out at a reaction temperature of 180°C and a reaction time of 20 h. The product was freeze-dried to obtain a titanium dioxide porous material loaded with lithium triborate; the mass fraction of lithium triborate powder in the material was 4%.

The preparation method of a kind of concentrated type high-efficiency deodorant that this embodiment provides is identical with embodiment 1.

Example 3

A concentrated type high-efficiency deodorant, the deodorant comprises the following components by weight: 7 parts of functional deodorant, 3 parts of sodium polyacrylate, 3 parts of cocamidopropyl betaine, 8 parts of ethanol and deodorant 25 parts of ionized water.

The preparation method of described functional deodorant specifically comprises the following steps:

S1. Add 7 mmol of butyl titanate into 100 mL of absolute ethanol and stir for 12 hours at a speed of 450 rpm/min, and carry out a reflux reaction at a reaction temperature of 70° C. After 4 hours of reaction, cool to room temperature to obtain a titanium dioxide colloidal particle solution;

S2. Add 5 mmol of butyl titanate to 100 mL of absolute ethanol, add the titanium dioxide colloidal particle solution prepared in step S1, add 200 mL of N, N-dimethylformamide for stirring, add 10 mmol of terephthalic acid and mix well, then transfer to In the reaction kettle, after reacting at 140°C for 22 hours, the product was centrifuged, washed and dried to obtain MIL-125@TiO ₂ nanoparticles;

S3. Put the MIL-125@TiO ₂ nanoparticles prepared in step S2 in a quartz boat, raise the temperature to 500°C at 2°C/min in a nitrogen atmosphere, keep it warm for 5h, and calcinate until the MIL-125 is carbonized to obtain a titanium dioxide porous material ;

S4. Perform high-speed ball milling of lithium carbonate and boron oxide with a mass ratio of 1:5 at a speed of 800rpm/min by ball milling method for 48h, and roast the powder obtained by ball milling in an air atmosphere at a roasting temperature of 800°C for 5 hours. , the product was again subjected to high-speed ball milling at a speed of 800 rpm/min for 24 hours to obtain lithium triborate powder;

S5. Place the titanium dioxide porous material prepared in S3 and the lithium triborate powder prepared in step S4 in deionized water respectively, and disperse with 400W ultrasonic to obtain two kinds of suspensions, mix and stir the two suspensions, and put them in the reaction kettle A hydrothermal reaction was carried out at a reaction temperature of 170°C and a reaction time of 22 hours. The product was freeze-dried to obtain a titanium dioxide porous material loaded with lithium triborate; the mass fraction of lithium triborate powder in the material was 5%.

The preparation method of a kind of concentrated type high-efficiency deodorant that this embodiment provides is identical with embodiment 1.

Example 4

A concentrated type high-efficiency deodorant, which comprises the following components by weight: 10 parts of functional deodorant, 3 parts of sodium polyacrylate, 3 parts of lauramide propylamine oxide, 10 parts of methanol and deionized 30 parts of water.

The preparation method of described functional deodorant specifically comprises the following steps:

S1. Add 5 mmol of butyl titanate into 100 mL of absolute ethanol and stir at a speed of 400 rpm/min for 8 h to carry out a reflux reaction at a reaction temperature of 50 ° C. After 5 h of reaction, cool to room temperature to obtain a titanium dioxide colloidal particle solution;

S2. Add 5 mmol of butyl titanate to 100 mL of absolute ethanol, add the titanium dioxide colloidal particle solution prepared in step S1, add 100 mL of N, N-dimethylformamide for stirring, add 5 mmol of terephthalic acid and mix evenly, then transfer to In the reaction kettle, after reacting at 160°C for 24 hours, the product was centrifuged, washed and dried to obtain MIL-125@TiO ₂ nanoparticles;

S3. Put the MIL-125@TiO ₂ nanoparticles prepared in step S2 in a quartz boat, raise the temperature to 400°C at 3°C/min in a nitrogen atmosphere, keep it warm for 8h, and calcinate until MIL-125 is carbonized to obtain a titanium dioxide porous material ;

S4. Perform high-speed ball milling of lithium carbonate and boron oxide with a mass ratio of 1:4 at a speed of 500rpm/min by ball milling method for 48h, and roast the powder obtained by ball milling in an air atmosphere at a roasting temperature of 700°C. After roasting for 6h , the product was again subjected to high-speed ball milling at a speed of 500 rpm/min for 24 hours to obtain lithium triborate powder;

S5. Place the titanium dioxide porous material prepared in S3 and the lithium triborate powder prepared in step S4 in deionized water respectively, and disperse with 400W ultrasonic to obtain two kinds of suspensions, mix and stir the two suspensions, and put them in the reaction kettle A hydrothermal reaction was carried out at a reaction temperature of 180°C and a reaction time of 18 hours. The product was freeze-dried to obtain a titanium dioxide porous material loaded with lithium triborate; the mass fraction of lithium triborate powder in the material was 3%.

The preparation method of a kind of concentrated type high-efficiency deodorant that this embodiment provides is identical with embodiment 1.

Example 5

A concentrated type high-efficiency deodorant, which comprises the following components by weight: 10 parts of functional deodorant, 3 parts of sodium polyacrylate, 3 parts of lauramide propylamine oxide, 15 parts of ethanol and deionized 30 parts of water.

The preparation method of described functional deodorant specifically comprises the following steps:

S1. Add 10 mmol of butyl titanate into 100 mL of absolute ethanol and stir at a speed of 350 rpm/min for 5 h to carry out a reflux reaction at a reaction temperature of 50° C. After 2 h of reaction, cool to room temperature to obtain a titanium dioxide colloidal particle solution;

S2. Add 3 mmol of butyl titanate to 100 mL of absolute ethanol, add the titanium dioxide colloidal particle solution prepared in step S1, add 100 mL of N, N-dimethylformamide for stirring, add 15 mmol of terephthalic acid and mix well, then transfer to In the reaction kettle, after reacting at 160°C for 24 hours, the product was centrifuged, washed and dried to obtain MIL-125@TiO ₂ nanoparticles;

S3. Put the MIL-125@TiO2 nanoparticles prepared in step S2 in a quartz boat, raise the temperature to 400° C. at 3° C./min in a nitrogen atmosphere, keep the temperature for 8 hours, and calcinate until the MIL-125 is carbonized to obtain a titanium dioxide porous material;

S4. Perform high-speed ball milling of lithium carbonate and boron oxide with a mass ratio of 1:4 at a speed of 500rpm/min by ball milling method for 48h, and roast the powder obtained by ball milling in an air atmosphere at a roasting temperature of 700°C. After roasting for 6h , the product was again subjected to high-speed ball milling at a speed of 500 rpm/min for 24 hours to obtain lithium triborate powder;

S5. Place the titanium dioxide porous material prepared in S3 and the lithium triborate powder prepared in step S4 in deionized water respectively, and disperse with 400W ultrasonic to obtain two kinds of suspensions, mix and stir the two suspensions, and put them in the reaction kettle A hydrothermal reaction was carried out at a reaction temperature of 160°C and a reaction time of 20 h. The product was freeze-dried to obtain a titanium dioxide porous material loaded with lithium triborate; the mass fraction of lithium triborate powder in the material was 5%.

The preparation method of a kind of concentrated type high-efficiency deodorant that this embodiment provides is identical with embodiment 1.

Experimental example

1. The deodorant prepared in Examples 1-5 of the present invention has the following steps for removing amino groups: first dilute the deodorant with deionized water at a ratio of 1:1, and then spread the diluted deodorant evenly On the experimental board, place it in a sealed cabin, and set the control group as an experimental board not coated with deodorant; pass ammonia gas into the sealed cabin until the ammonia concentration is 100mg/m ³ , turn on the ultraviolet lamp, The power of the ultraviolet lamp is 60W, measure the ammonia concentration in the sealed cabin every 0.5h, calculate the ammonia concentration by absorbance photometry, and calculate the ammonia removal rate according to the following formula.

。 The formula is:

.

2. The deodorant prepared in Examples 1-5 of the present invention has the following test steps for removing hydrogen sulfide: first dilute the deodorant with deionized water at a ratio of 1:1, and then uniformly dilute the deodorant Spread it on the experimental board, put it in the sealed cabin, and set the control group as the experimental board without deodorant; pass hydrogen sulfide into the sealed cabin until the concentration of hydrogen sulfide is 50mg/m ³ , turn on the ultraviolet lamp , the power of the ultraviolet lamp is 60W, measure the concentration of hydrogen sulfide in the sealed cabin every 0.5h, calculate the concentration of hydrogen sulfide by absorbance photometry, and calculate the removal rate of hydrogen sulfide according to the above formula.

3. The cycle test of the deodorant prepared in Examples 1-5 of the present invention is as follows: the initial concentration of ammonia in the sealed cabin is set to 50 mg/m ³ , and the test plate coated with the deodorant is placed in the sealed chamber. In the cabin, measure the ammonia concentration in the airtight chamber every 10 minutes. After 1.5 hours, take out the test board and test the ammonia concentration in the airtight chamber; restore the ammonia concentration in the airtight chamber to 50mg/m ³ , without any The processed experimental boards were continued to be put into the airtight cabin; the cycle test was carried out 5 times, and the environmental conditions were kept constant.

4. The morphology of titanium dioxide porous material loaded with lithium triborate was analyzed and characterized by scanning electron microscope (SEM).

Result analysis

Fig. 1 is the deodorant described in the embodiment of the present invention 1-5 to the result figure of the removal rate of ammonia, as shown in the figure, the concentration of ammonia in the sealed cabin of the control group hardly declines, indicating that ammonia is under ultraviolet light. Gas can not undergo photolysis reaction, and the removal rate (after 4.5 hours) of the deodorant described in Examples 1-5 to ammonia is 90.88%, 91.22%, 88.77%, 89.66%, 87.26%, the present invention The deodorant has a removal effect on ammonia, and the removal of ammonia can almost reach a saturated state after 2 hours.

Fig. 2 is the deodorant described in the embodiment of the present invention 1-5 to the result figure of the removal rate of hydrogen sulfide gas, as figure, the hydrogen sulfide gas in the sealed cabin of control group does not decline, illustrates that hydrogen sulfide gas can not be in the ultraviolet ray Under light, carry out photolysis, and the deodorant described in embodiment 1-5 is to the removal rate of hydrogen sulfide gas in 4.5h 91.98%, 90.13, 93.02%, 90.32%, 87.13%, and the removal rate of ammonia gas The difference in the removal effect is that the removal of hydrogen sulfide gas can only reach a saturated state after 3-3.5 hours.

Fig. 3 is the removal rate of the deodorant described in Example 1 of the present invention to ammonia in six cycles of use, as shown in the figure, the deodorant described in Example 1 of the present invention is in the first to sixth times The removal effect of ammonia gas is similar, there is no obvious difference; the passivation of ammonia gas deodorant is mainly that ammonia gas is decomposed into nitrate and nitrite on the surface of titanium dioxide, causing the active site of titanium dioxide to be covered. The present invention uses lithium triborate Loaded on the surface of titanium dioxide porous material, lithium triborate has optical properties, and the rewinding electrons can directly convert nitrate and nitrite into N2 with nitrate.

Fig. 4 is the SEM image of the titanium dioxide porous material loaded with lithium triborate described in Example 1 of the present invention. As shown in the figure, MIL-125 has a lattice structure, which can form a porous structure on the surface of titanium dioxide, increase the surface roughness, and improve the catalytic performance. Specific surface area; in the enlarged view, it is obvious that lithium triborate loading and the surface of the titanium dioxide porous material can be added, which proves that the titanium dioxide porous material loaded with lithium triborate described in the present invention is successfully prepared.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

The present invention and its implementations have been described above, and this description is not limiting. What is shown in the drawings is only one of the implementations of the present invention, and the actual application is not limited thereto. All in all, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a method and embodiment similar to the technical solution, it shall fall within the scope of protection of the present invention.

Claims (9)

1. A concentrated efficient deodorant is characterized in that: the deodorant comprises the following components in parts by weight: 5-10 parts of functional deodorant, 1-3 parts of dispersing agent, 1-3 parts of surfactant, 8-15 parts of solvent and 15-30 parts of deionized water; the functional deodorant is a titanium dioxide porous material loaded with lithium triborate;

the preparation method of the functional deodorant specifically comprises the following steps:

s1, adding a titanium source into absolute ethyl alcohol, stirring, carrying out reflux reaction, and cooling to room temperature after the reaction is finished to obtain a titanium dioxide colloidal particle solution;

s2, adding a titanium source into absolute ethyl alcohol, adding the titanium dioxide colloid particle solution prepared in the step S1, adding N, N-dimethylformamide, stirring, adding terephthalic acid, uniformly mixing, transferring into a reaction kettle, reacting, centrifuging, washing and drying the product to obtain MIL-125@TiO ₂ A nanoparticle;

s3, mixing MIL-125@TiO prepared in the step S2 ₂ The nano particles are arranged in a quartz boat and calcined to MIL-125 carbonization under inert atmosphere, so as to obtain the titanium dioxide porous material;

s4, performing high-speed ball milling on lithium carbonate and boron oxide by adopting a ball milling method, roasting powder obtained by ball milling in an air atmosphere, and performing high-speed ball milling on the roasted product again to obtain lithium triborate powder;

and S5, respectively placing the titanium dioxide porous material prepared in the step S3 and the lithium triborate powder prepared in the step S4 into deionized water, performing 400W ultrasonic dispersion to obtain two kinds of suspensions, mixing and stirring the two kinds of suspensions, performing hydrothermal reaction in a reaction kettle, and performing freeze drying on the product to obtain the lithium triborate-loaded titanium dioxide porous material.

2. The concentrated high-efficiency deodorant according to claim 1, wherein: in S1, the titanium source is butyl titanate; the stirring speed is 350-450r/min, and the stirring time is 5-12h; the reaction temperature is 50-80 ℃ and the reaction time is 2-5h; the molar volume ratio of the titanium source to the absolute ethyl alcohol is 5-10mmol:100mL.

3. The concentrated high-efficiency deodorant according to claim 2, wherein: in S2, the titanium source is butyl titanate; the molar volume ratio of the titanium source to the absolute ethyl alcohol is 1-5mmol:100mL; the volume ratio of the N, N-dimethylformamide to the absolute ethyl alcohol is 1-2:1; the mole ratio of terephthalic acid to titanium source is 3-5:1.

4. a concentrated high efficiency deodorant according to claim 3, wherein: in S2, the reaction temperature in the reaction kettle is 140-160 ℃ and the reaction time is 18-24h.

5. The concentrated high-efficiency deodorant according to claim 4, wherein: in S3, the inert gas is at least one of nitrogen and argon; the calcination condition is that the temperature is raised to 400-600 ℃ at 1-5 ℃ and the temperature is kept for 3-8h.

6. The concentrated high-efficiency deodorant according to claim 5, wherein: in S4, the mass ratio between the lithium carbonate and the boron oxide is 1:2-5; the rotating speed of high-speed ball milling is 400-800r/min; the roasting temperature is 600-800 ℃ and the roasting time is 5-7h under the air atmosphere.

7. The concentrated high-efficiency deodorant according to claim 6, wherein: in S5, the mass fraction of the lithium triborate powder in the titanium dioxide porous material loaded with lithium triborate is 2-5%; the temperature of the hydrothermal reaction is 150-180 ℃, and the hydrothermal reaction time is 18-24h.

8. The concentrated high-efficiency deodorant according to claim 7, wherein: the dispersing agent is sodium polyacrylate; the surfactant is at least one of lauramidopropyl amine oxide, dodecyl betaine and cocamidopropyl betaine; the solvent is at least one of methanol, ethanol, ethylene glycol and propylene glycol.

9. The method for preparing the concentrated efficient deodorant according to any one of claims 1 to 8, characterized in that: the method comprises the following specific steps: weighing the functional deodorant, the dispersing agent and the surfactant according to parts by weight, uniformly stirring in a solvent, adding deionized water, uniformly mixing, and filtering by a 200-mesh filter screen to obtain the concentrated efficient deodorant.

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