Environment-friendly efficient photocatalyst formaldehyde scavenger and preparation method thereof

Abstract

The invention relates to the technical field of formaldehyde removal, in particular to an environment-friendly efficient photocatalyst formaldehyde scavenger and a preparation method thereof. The formaldehyde catching agent is prepared by blending aminated gelatin, an amino-terminated hyperbranched polymer and chitosan, and the formaldehyde inducer is prepared by blending formaldehyde, ammonium chloride and sodium sulfite, so that the formaldehyde catching agent and the formaldehyde inducer are integrated, and the formaldehyde removing performance is good; the adopted nano anatase type titanium dioxide has good dispersity, light resistance and covering power, the overall preparation process is simple, the cost is low, the performance is stable, the formaldehyde removal rate is high, the application range is wide, all the components of the product are safe and nontoxic raw materials, secondary pollution cannot be generated in the using process, personal health cannot be endangered, and the product is economical and environmentally friendly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of formaldehyde removal, in particular to an environment-friendly high-efficiency photocatalyst formaldehyde scavenger and a preparation method thereof. BACKGROUND

[0002] Formaldehyde, a colorless gas, is not easy to be perceived at low concentration and can be easily covered by other odors such as air fresheners, etc. At high concentration, it has a strong irritating and suffocating odor and can irritate the eyes, nose, etc. of human beings. Formaldehyde is a toxic gas that seriously endangers human health and is often found in substandard furniture and decoration materials. Long-term exposure to an environment with high formaldehyde concentration.

[0003] However, in the prior art, photocatalysts are often used for formaldehyde removal, especially for indoor decoration pollution. However, due to the large indoor space, the dispersion of the photocatalyst formaldehyde scavenger is poor, and it is difficult to effectively remove formaldehyde and other odors. The indoor environment is not transparent and belongs to gas-phase photocatalysis. Directly spraying the photocatalyst material on the surface of the formaldehyde volatile material such as walls and floors, the degradation capacity of the photocatalyst material for formaldehyde is limited by light, and the photocatalyst material has poor light resistance and low hiding power, and thus cannot effectively remove formaldehyde. SUMMARY

[0004] In view of the deficiencies of the prior art, the technical scheme adopted by the present application to solve the technical problems is as follows:

[0005] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger and a preparation method thereof, comprising: nano-titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde capturing agent, formaldehyde inducing agent, auxiliary agent and ionized water, wherein the auxiliary agent comprises: penetrating agent, dispersing agent, adsorbent and bactericidal and mildew-proof agent, the penetrating agent is anhydrous ethanol, the dispersing agent is sodium dodecyl benzene sulfonate, the adsorbent is polyacrylamide, and the bactericidal and mildew-proof agent is phenol.

[0006] A preparation method of an environment-friendly high-efficiency photocatalyst formaldehyde scavenger, comprising the following steps:

[0007] Step one, determining raw materials: preparing nano-titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde capturing agent, formaldehyde inducing agent, penetrating agent, dispersing agent, adsorbent, bactericidal and mildew-proof agent and ionized water;

[0008] Step two, stirring the raw materials: mixing and stirring the nano-titanium dioxide, propylene glycol and ionized water to prepare a photocatalyst solution;

[0009] Step three, mixing the solution: adding the amino acid surfactant, formaldehyde capturing agent and formaldehyde inducing agent into the ionized water to prepare a mixed solution;

[0010] Step four, auxiliary treatment: the penetrating agent, dispersing agent, adsorbent, fungicide are mixed uniformly and put into the crusher for grinding;

[0011] Step five, adding auxiliary agent: the fine powder after crushing in step three is sieved by vibration screen, and the sieved powder is added into the mixed solution in step three and placed in the blender, and then low-speed stirring and mixing and high-speed stirring and mixing are carried out to prepare the preparation liquid;

[0012] Step six, stirring and shaping: the photocatalyst solution in step two is added into the preparation liquid in step five, and stirring and mixing are carried out to prepare the environment-friendly high-efficiency photocatalyst formaldehyde scavenger.

[0013] Preferably, in the step one, the weight of the nano-titanium dioxide is 10-15 parts, the weight of the propylene glycol is 5-100 parts, the weight of the amino acid surfactant is 15-20 parts, the weight of the formaldehyde capturing agent is 15-20 parts, the weight of the formaldehyde inducing agent is 10-15 parts, the weight of the penetrating agent is 5-10 parts, the weight of the dispersing agent is 5-10 parts, the weight of the adsorbent is 3-5 parts, the weight of the fungicide is 2-5 parts, and the weight of the ionized water is 30-40 parts. The dispersing agent can also be one or a mixture of two or more of sodium water glass, potassium water glass, lithium water glass, sodium tripolyphosphate, sodium hexametaphosphate and sodium pyrophosphate. The penetrating agent can be one or a mixture of two or more of anhydrous ethanol, ethylene glycol, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, sodium alkyl sulfate, sodium secondary alkyl sulfonate, sodium secondary alkyl sulfate and sodium alkyl naphthalene sulfonate.

[0014] Preferably, in the step two, the nano-titanium dioxide is nano-anatase titanium dioxide, and stirring and mixing are carried out at 50-60℃ for 1-2 hours. The nano-anatase titanium dioxide has better dispersibility and hiding power, and the particle size of the nano-anatase titanium dioxide is 5-10 nm.

[0015] Preferably, in the step three, the formaldehyde capturing agent is prepared by blending amino gelatin, amino-terminated hyperbranched polymer and chitosan at a mass ratio of 1:1:1, and the formaldehyde inducing agent is prepared by blending formaldehyde, ammonium chloride and sodium sulfite.

[0016] Preferably, in the step five, the low-speed stirring and mixing is carried out at 300-500 rpm for 20-30 min, and the high-speed stirring and mixing is carried out at 500-800 rpm for 20-30 min.

[0017] Preferably, in the step six, the stirring temperature is 60℃, the stirring and mixing time is 2h, and the environment-friendly high-efficiency photocatalyst formaldehyde scavenger is obtained after cooling to room temperature.

[0018] The beneficial effects of the present application are as follows:

[0019] The formaldehyde capturing agent and the formaldehyde inducer are prepared by blending amino gelatin, amino-terminated hyperbranched polymer and chitosan, and blending formaldehyde, ammonium chloride and sodium sulfite, two functions are integrated, good formaldehyde removal performance is achieved, the nano anatase titanium dioxide has good dispersity, light resistance and hiding power, the overall preparation process is simple, the cost is low, the performance is stable, the formaldehyde removal rate is high, the application range is wide, and the components of the product are safe and non-toxic raw materials, no secondary pollution is caused in the use process, and personal health is not endangered, the product is economic and environment-friendly. DETAILED DESCRIPTION

[0020] The application will be further described in detail below in combination with specific embodiments. The embodiments of the application are given for illustration and description only, and are not exhaustive or limit the application to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use.

[0021] Embodiment one:

[0022] The application provides a technical scheme: a preparation method of an environment-friendly high-efficiency photocatalyst formaldehyde scavenger, comprising the following steps:

[0023] Step one, raw material determination: prepare nano titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde capturing agent, formaldehyde inducer, penetrant, dispersant, adsorbent, bactericidal and mildew-proof agent and ionized water according to the weight ratio of 10:5:15:15:10:5:5:3:2:30;

[0024] Step two, raw material stirring: stir and mix the nano titanium dioxide, propylene glycol and ionized water at 50-60 DEG C for 1-2 hours to prepare a photocatalyst solution;

[0025] Step three, solution mixing: add the amino acid surfactant, formaldehyde capturing agent and formaldehyde inducer into the ionized water to prepare a mixed solution; the formaldehyde capturing agent is prepared by blending amino gelatin, amino-terminated hyperbranched polymer and chitosan at a mass ratio of 1:1:1, and the formaldehyde inducer is prepared by blending formaldehyde, ammonium chloride and sodium sulfite;

[0026] Step four, additive treatment: uniformly mix the penetrant, dispersant, adsorbent and bactericidal and mildew-proof agent, and put them into a crusher for crushing and grinding;

[0027] Step five, adding an aid: the fine powder after crushing in step three is sieved by a vibrating screen, the sieved powder is added to the mixed solution in step three and placed in a blender, and low-speed stirring and mixing are first carried out and then high-speed stirring and mixing are carried out to prepare a preparation liquid; the low-speed stirring and mixing is mixing for 20-30 min under the condition of 300-500 r / min, and the high-speed stirring and mixing is mixing for 20-30 min under the condition of 500-800 r / min;

[0028] Step six, stirring and shaping: the photocatalyst solution in step two is added to the preparation liquid in step five, and stirring and mixing are carried out, the stirring temperature is 60°C, the stirring and mixing time is 2 h, and the preparation liquid is cooled to room temperature to prepare the environment-friendly high-efficiency photocatalyst formaldehyde scavenger.

[0029] Example two:

[0030] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger preparation method, comprising the following steps:

[0031] Step one, raw material determination: prepare rutile nano titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde capturing agent, formaldehyde inducing agent, penetrant, dispersant, adsorbent, bactericidal and mildew-proof agent, and ionized water according to the weight ratio of 10:10:15:15:10:5:5:3:2:30;

[0032] Step two, raw material stirring: rutile nano titanium dioxide, propylene glycol, and ionized water are stirred and mixed at 50-60°C for 1-2 hours to prepare a photocatalyst solution;

[0033] Step three, solution mixing: the amino acid surfactant, the formaldehyde capturing agent, and the formaldehyde inducing agent are added to the ionized water to prepare a mixed solution; the formaldehyde capturing agent is prepared by blending amino gelatin, amino-terminated hyperbranched polymer, and chitosan at a mass ratio of 1:1:1, and the formaldehyde inducing agent is prepared by blending formaldehyde, ammonium chloride, and sodium sulfite;

[0034] Step four, aid treatment: the penetrant, the dispersant, the adsorbent, and the bactericidal and mildew-proof agent are uniformly mixed and placed in a crusher for crushing and grinding;

[0035] Step five, adding an aid: the fine powder after crushing in step three is sieved by a vibrating screen, the sieved powder is added to the mixed solution in step three and placed in a blender, and low-speed stirring and mixing are first carried out and then high-speed stirring and mixing are carried out to prepare a preparation liquid; the low-speed stirring and mixing is mixing for 20-30 min under the condition of 300-500 r / min, and the high-speed stirring and mixing is mixing for 20-30 min under the condition of 500-800 r / min;

[0036] Step six, stirring molding: the photocatalyst solution in step two is added to the preparation liquid in step five, stirring mixing, stirring temperature is 60℃, stirring mixing time is 2h, cooling to room temperature to prepare the environment-friendly high-efficiency photocatalyst formaldehyde scavenger.

[0037] Example three:

[0038] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger preparation method comprises the following steps:

[0039] Step one, raw material determination: prepare nano-titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde inducer, penetrant, dispersant, adsorbent, bactericidal and mildewproof agent and ionized water according to the weight ratio of 10:50:15:20:15:5:5:3:2:30;

[0040] Step two, raw material stirring: mix and stir nano-titanium dioxide, propylene glycol and ionized water to prepare a photocatalyst solution;

[0041] Step three, solution mixing: add amino acid surfactant and formaldehyde inducer to ionized water to prepare a mixed solution; the formaldehyde inducer is prepared by blending formaldehyde, ammonium chloride and sodium sulfite;

[0042] Step four, additive treatment: uniformly mix the penetrant, dispersant, adsorbent and bactericidal and mildewproof agent, and put them into a crusher for crushing and grinding;

[0043] Step five, adding additive: screen the fine powder after crushing in step three, add the screened powder into the mixed solution in step three and place it in a stirrer, first stir and mix at low speed for 20-30min and then stir and mix at high speed for 20-30min; the low-speed stirring and mixing is under the condition of 300-500r / min, and the high-speed stirring and mixing is under the condition of 500-800r / min;

[0044] Step six, stirring molding: the photocatalyst solution in step two is added to the preparation liquid in step five, stirring mixing, stirring temperature is 60℃, stirring mixing time is 2h, cooling to room temperature to prepare the environment-friendly high-efficiency photocatalyst formaldehyde scavenger.

[0045] In this embodiment, the nano-titanium dioxide is nano-anatase titanium dioxide, which is stirred and mixed at 50-60℃ for 1-2h.

[0046] Example four:

[0047] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger preparation method comprises the following steps:

[0048] Step one, raw material determination: the nano titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde capture agent, penetrant, dispersant, adsorbent, fungicide and ion water, according to the weight ratio of 15∶50∶20∶20∶15∶10∶10∶3∶2∶40 for preparation;

[0049] Step two, raw material stirring: the nano titanium dioxide, propylene glycol and ion water are mixed and stirred to prepare a photocatalyst solution;

[0050] Step three, solution mixing: the amino acid surfactant and the formaldehyde capture agent are added to the ion water to prepare a mixed solution; the formaldehyde capture agent is prepared by blending amino gelatin, amino-terminated hyperbranched polymer and chitosan in a mass ratio of 1∶1∶1;

[0051] Step four, additive treatment: the penetrant, dispersant, adsorbent and fungicide are uniformly mixed and put into a crusher for grinding;

[0052] Step five, adding additive: the fine powder after crushing in step three is sieved by a vibrating screen, and the sieved powder is added to the mixed solution in step three and placed in a stirrer for low-speed stirring and mixing and then high-speed stirring and mixing to prepare a preparation liquid; the low-speed stirring and mixing is mixing for 20-30 min under the condition of 300-500 r / min, and the high-speed stirring and mixing is mixing for 20-30 min under the condition of 500-800 r / min;

[0053] Step six, stirring and shaping: the photocatalyst solution in step two is added to the preparation liquid in step five for stirring and mixing, the stirring temperature is 60℃, the stirring and mixing time is 2 h, and the cooling to room temperature to prepare an environmentally friendly high-efficiency photocatalyst formaldehyde scavenger.

[0054] In this embodiment, the nano titanium dioxide is nano anatase titanium dioxide, which is stirred and mixed at 50-60℃ for 1-2 hours.

[0055] Performance detection:

[0056] According to the methods of example one, example two, example three and example four, first group, second group, third group and fourth group are prepared respectively, and environmentally friendly high-efficiency photocatalyst formaldehyde scavengers with different properties are obtained. Take 5g of each of the four groups of formaldehyde scavengers and put them into a 5L dryer with an initial concentration of 50mg / m 3 Formaldehyde, then measure the formaldehyde concentration in the gas in the dryer at any time.

[0057]

[0058] It can be seen from the experimental results that the formaldehyde scavenger has remarkable effect, especially in the first group, the amino gelatin is blended with the amino-terminated hyperbranched polymer and chitosan to prepare the formaldehyde capturing agent, and the formaldehyde inducer is prepared by blending formaldehyde, ammonium chloride and sodium sulfite, the effect is better than that of the third group and the fourth group using one of the two, and the dispersity, light resistance and hiding power of the first group, the third group and the fourth group using the nano anatase titanium dioxide are better than those of the second group using the nano rutile titanium dioxide, so that the photocatalyst formaldehyde scavenger has the advantages of simple preparation process, low cost, stable performance, remarkable formaldehyde concentration reduction effect within 24 hours after the treatment of the photocatalyst formaldehyde scavenger, high formaldehyde removal rate and wide application range.

[0059] The embodiments described are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative work shall belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, without special description and limitation.

Claims

1. An environmentally friendly and highly efficient photocatalytic formaldehyde remover, characterized in that, include: by weight 10-15 parts of nano titanium dioxide 5-100 parts of propylene glycol 15-20 parts of amino acid surfactant 15-20 parts of formaldehyde scavenger 10-15 parts of formaldehyde inducer 5-30 parts of auxiliary agent 30-40 parts of ionized water The additives include: a penetrant, a dispersant, an adsorbent, and a bactericide and fungicide. The penetrant is anhydrous ethanol, the dispersant is sodium dodecylbenzenesulfonate, the adsorbent is polyacrylamide, and the bactericide and fungicide is phenol.

2. The method for preparing an environmentally friendly, high-efficiency photocatalytic formaldehyde remover according to claim 1, characterized in that, Includes the following steps: Step 1: Raw material selection: Prepare nano-titanium dioxide, propylene glycol, amino acid surfactant, formaldehyde scavenger, formaldehyde inducer, penetrant, dispersant, adsorbent, bactericide and mildew inhibitor, and deionized water; Step 2, Raw material stirring: Mix and stir nano-titanium dioxide, propylene glycol and deionized water to prepare photocatalyst solution; Step 3, Solution Mixing: Add amino acid surfactant, formaldehyde scavenger and formaldehyde inducer to deionized water to prepare a mixed solution; Step 4, Additive Treatment: Mix the penetrant, dispersant, adsorbent, bactericide and mildew inhibitor evenly, and put them into a crusher for pulverization and grinding; Step 5: Adding additives: The fine powder pulverized in Step 3 is sieved through a vibrating screen. The sieved powder is added to the mixed solution in Step 3 and placed in a mixer. The mixture is first stirred at low speed and then stirred at high speed to obtain the preparation solution. Step 6, Stirring and Molding: Add the photocatalyst solution from Step 2 to the preparation solution from Step 5, and stir to mix to obtain an environmentally friendly and efficient photocatalyst formaldehyde remover.

3. The preparation method of an environmentally friendly and highly efficient photocatalytic formaldehyde remover according to claim 2, characterized in that: In step one, the weight parts of nano-titanium dioxide are 10-15 parts, the weight parts of propylene glycol are 5-100 parts, the weight parts of amino acid surfactant are 15-20 parts, the weight parts of formaldehyde scavenger are 15-20 parts, the weight parts of formaldehyde inducer are 10-15 parts, the weight parts of penetrant are 5-10 parts, the weight parts of dispersant are 5-10 parts, the weight parts of adsorbent are 3-5 parts, the weight parts of bactericide and mildew inhibitor are 2-5 parts, and the weight parts of ionized water are 35-40 parts.

4. The preparation method of an environmentally friendly and highly efficient photocatalytic formaldehyde remover according to claim 2, characterized in that: In step two, the nano-titanium dioxide is nano-anatase titanium dioxide, which is stirred and mixed at 50-60℃ for 1-2 hours.

5. The preparation method of an environmentally friendly and highly efficient photocatalytic formaldehyde remover according to claim 2, characterized in that: In step three, the formaldehyde scavenger is prepared by blending aminated gelatin, terminal amino hyperbranched polymer and chitosan in a mass ratio of 1:1:1, and the formaldehyde inducer is prepared by blending formaldehyde, ammonium chloride and sodium sulfite.

6. The preparation method of an environmentally friendly and highly efficient photocatalytic formaldehyde remover according to claim 2, characterized in that: In step five, low-speed mixing is performed at 300-500 rpm for 20-30 minutes, and high-speed mixing is performed at 500-800 rpm for 20-30 minutes.

7. The preparation method of an environmentally friendly and highly efficient photocatalytic formaldehyde remover according to claim 2, characterized in that: In step six, the stirring temperature is 60°C, the stirring time is 2 hours, and the mixture is cooled to room temperature to obtain an environmentally friendly and highly efficient photocatalytic formaldehyde remover.

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