CN111921375A - Ag-MnO2/AC composite aldehyde-removing material, preparation method thereof, aldehyde-removing module and air purification equipment - Google Patents

Ag-MnO2/AC composite aldehyde-removing material, preparation method thereof, aldehyde-removing module and air purification equipment Download PDF

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CN111921375A
CN111921375A CN202010918017.0A CN202010918017A CN111921375A CN 111921375 A CN111921375 A CN 111921375A CN 202010918017 A CN202010918017 A CN 202010918017A CN 111921375 A CN111921375 A CN 111921375A
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aldehyde
composite
mixing
mno
composite system
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CN111921375B (en
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金星
王贤波
刘江
王天龙
胡康泽
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Gree Electric Appliances Inc of Zhuhai
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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Abstract

The invention provides Ag-MnO2the/AC composite aldehyde-removing material, the preparation method thereof, the aldehyde-removing module and the air purification equipment. The preparation method comprises the following steps: step S1, mixing the potassium permanganate solution with the porous carbon for a first preset time to obtain a first composite system; step S2, mixing the first composite system with Ag+Mixing the solutions for a second preset time to obtain a second composite system; step S3, will beCarrying out solid-liquid separation on the two composite systems to obtain a solid separated matter and a separation liquid; step S4, drying the solid isolate at 60-100 ℃ to obtain Ag-MnO2the/AC composite aldehyde-removing material. The method of loading manganese oxide on porous carbon and then loading silver is adopted, so that the three aldehyde-removing materials form effective composition. The formed aldehyde removing material utilizes activated carbon to adsorb formaldehyde, and manganese oxide and nano silver catalyze and oxidize formaldehyde to form carbon dioxide and water, so that the service life is prolonged, and the problem of toxic substances is avoided.

Description

Ag-MnO2/AC composite aldehyde-removing material, preparation method thereof, aldehyde-removing module and air purification equipment
Technical Field
The invention relates to the technical field of aldehyde removing materials, in particular to Ag-MnO2the/AC composite aldehyde-removing material, the preparation method thereof, the aldehyde-removing module and the air purification equipment.
Background
Formaldehyde (HCHO) is a common volatile organic compound in indoor air and seriously harms human health, so that the method has very important research significance on the removal and treatment of formaldehyde pollutants in the indoor air. The main component of the filter screen for the air purifier is activated carbon, the pure activated carbon filter material is mainly used for removing formaldehyde by virtue of adsorption, the service life of the filter screen is limited by adsorption saturation, and once the activated carbon reaches the adsorption saturation, toxic substances can be generated to harm human health. Research shows that the formaldehyde can be completely converted into nontoxic and harmless CO by catalytic oxidation technology2And H2And O, the process can be realized at normal temperature without additional energy input, and has important significance for prolonging the service life of the filter screen, so that the formaldehyde catalytic oxidation technology is widely concerned by various social circles.
The data show that silver and manganese are catalyst elements commonly used in formaldehyde catalytic oxidation, simple substance silver also has good bacteriostatic action, and active carbon material is good adsorption material, if the three are combined to prepare Ag-MnO2the/AC filter material has good application prospect when being applied to the filter screen of the air purifier.
In the conventional catalyst preparation process, high-temperature treatment means such as calcination and the like are generally needed, but the catalyst using the activated carbon as a carrier is not suitable because the activated carbon carrier cannot resist high temperature under the air condition and can become white powder to lose the original porous structure after calcination in an aerobic environment at the temperature of more than 200 ℃. For Mn series formaldehyde catalysts, manganese has higher formaldehyde catalytic oxidation activity when being in an oxide form, but manganese salt is generally required to be used for obtaining manganese oxide through high-temperature treatment means such as calcination and the like; for the Ag catalyst, when the Ag is in a silver-white metallic luster, the Ag is simple substance, the catalyst has formaldehyde catalytic oxidation activity and antibacterial effect, and reducing agents such as sodium borohydride and the like are needed for obtaining the simple substance silver, so that certain danger exists.
Therefore, in the prior art, the preparation of the manganese-carbon formaldehyde catalyst and the silver formaldehyde catalyst is complex, and no technology capable of compounding silver, manganese and active carbon to form the formaldehyde purifying catalyst exists in the prior art.
Disclosure of Invention
The invention mainly aims to provide Ag-MnO2the/AC composite aldehyde-removing material, the preparation method thereof, the aldehyde-removing module and the air purification equipment solve the problem that silver, manganese and active carbon cannot be compounded to form the aldehyde-removing material in the prior art.
To achieve the above object, according to one aspect of the present invention, there is provided an Ag-MnO2The preparation method of the/AC composite aldehyde-removing material comprises the following steps: step S1, mixing the potassium permanganate solution with the porous carbon for a first preset time to obtain a first composite system; step S2, mixing the first composite system with Ag+Mixing the solutions for a second preset time to obtain a second composite system; step S3, performing solid-liquid separation on the second composite system to obtain a solid separated matter and a separation liquid; step S4, drying the solid isolate at 60-100 ℃ to obtain Ag-MnO2the/AC composite aldehyde-removing material.
Further, the step S1 includes: carrying out first stirring and mixing on a potassium permanganate solution and porous carbon for first preset time to obtain a first composite system; preferably, the stirring speed of the first stirring and mixing is 300-800 r/min, and the first predetermined time is 10-60 min.
Further, the concentration of potassium permanganate in the potassium permanganate solution is 0.05-0.5 mol/L.
Further, the step S2 includes: mixing the first composite system with Ag+The solution is stirred for the second time to obtain a second compoundAnd (3) mixing the system, preferably, the stirring speed of the second stirring and mixing is 300-800 r/min, and the second preset time is 10-60 min.
Further, the above-mentioned Ag-containing compound+Ag in solution+The concentration of (b) is 0.01-0.1 mol/L.
Further, the above-mentioned Ag-containing compound+The solution is silver nitrate and/or silver acetate.
Further, the step S3 includes: filtering the second composite system to obtain a filter cake and a filtrate; and washing the filter cake with water to obtain a solid isolate.
Further, the porous carbon is selected from any one of activated carbon, mesoporous carbon and carbon fiber, and the particle size of the porous carbon is preferably 0.2-0.6 mm.
According to another aspect of the present invention, there is provided an Ag-MnO2a/AC composite aldehyde-removing material, the Ag-MnO2the/AC composite aldehyde-removing material comprises porous carbon, manganese dioxide and nano silver, wherein the manganese dioxide and the nano silver are loaded on the porous carbon, and the nano silver is exposed in Ag-MnO2The inner surface and the outer surface of the/AC composite aldehyde-removing material; preferably, the molar ratio of the nano silver to the manganese dioxide is 0.01-0.1: 1, and the total loading amount of the manganese dioxide and the nano silver on the porous carbon is 5-30%, preferably 5-15%, and further preferably, the porous carbon is selected from any one of activated carbon, mesoporous carbon and carbon fiber.
According to another aspect of the present invention, there is provided Ag-MnO prepared by any one of the above-mentioned preparation methods2the/AC composite aldehyde-removing material.
According to another aspect of the present invention, there is provided an aldehyde removing module comprising a breather container and an aldehyde removing material of Ag-MnO of any one of the above2the/AC composite aldehyde-removing material.
According to another aspect of the present invention, there is provided an air cleaning apparatus comprising a filter screen on which an aldehyde removing material is disposed, the aldehyde removing material being any one of Ag — MnO as described above2the/AC composite aldehyde-removing material.
By applying the technical scheme of the invention, the method that manganese oxide is loaded on porous carbon and then silver is loaded is adopted, so thatThe aldehyde-removing material forms an effective composite. Firstly, manganese oxide is loaded on porous carbon by using a potassium permanganate solution. In the step, the porous carbon is not calcined, but is contacted with a potassium permanganate solution, so that the potassium permanganate and the activated carbon are subjected to oxidation-reduction reaction, manganese oxide is loaded on the porous carbon, and meanwhile, the potassium permanganate plays an etching role in the activated carbon, so that the pore structure of the porous carbon is further enriched. In addition, the manganese oxide is loaded before the Ag is loaded, so that the Ag cannot be wrapped in MnO2The Ag cannot function because of the inside. Secondly, by Ag+The solution contacts with the porous carbon, the aim of loading the nano Ag elementary substance on the porous carbon is achieved by utilizing the reducibility of the porous carbon, dangerous medicaments such as sodium borohydride and the like are not needed to be used as reducing agents in the process, and the operation danger is reduced. Finally, carrying out solid-liquid separation and drying to obtain Ag-MnO2the/AC composite aldehyde-removing material does not form shielding on the manganese dioxide because the particle size of the loaded nano silver is small and the upper limit of the loading amount of the nano silver is much lower than that of the manganese dioxide. This application is through removing the aldehyde material with three kinds and combining, the aldehyde material that removes that forms is removing the aldehyde in-process, utilize the adsorption of active carbon to adsorb formaldehyde, formaldehyde after the absorption (even not adsorbed also can) is formed carbon dioxide and water by catalytic oxidation under the effect of manganese oxide and nanometer silver, thereby overcome the short problem of life-span that the physical absorption of active carbon is limited to lead to, and the problem of toxic substance has also been avoided producing, it is thus visible, the aldehyde material that removes of this application effectively exerts three kinds of materials removes aldehyde effect and Ag's bacteriostatic action, the aldehyde efficiency that removes of aldehyde material of unit volume has greatly been promoted. Meanwhile, the method is simple, low in risk and low in cost, and is suitable for industrial large-scale production.
Detailed Description
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 invention will be described in detail with reference to examples.
According to the description in the background art, the preparation of the manganese-carbon series formaldehyde catalyst and the silver series formaldehyde catalyst is complicated, and the prior art hasThere is no technology for compounding silver, manganese and activated carbon to form a catalyst for purifying formaldehyde. The application tries to compound silver, manganese oxide and active carbon, and in the test process, when the silver, the manganese oxide and the active carbon are compounded, the feeding sequence of the three has a critical influence on the aldehyde removal performance of the compounded product, if the silver is loaded before the manganese oxide is loaded, the loaded manganese oxide can shield the silver, and the catalytic action of the silver is difficult to realize. Based on the research, the application provides Ag-MnO2the/AC composite aldehyde-removing material, the preparation method thereof, the aldehyde-removing module and the air purification equipment.
In an exemplary embodiment of the present application, there is provided an Ag-MnO2The preparation method of the/AC composite aldehyde-removing material comprises the following steps: step S1, mixing the potassium permanganate solution with the porous carbon for a first preset time to obtain a first composite system; step S2, mixing the first composite system with Ag+Mixing the solutions for a second preset time to obtain a second composite system; step S3, performing solid-liquid separation on the second composite system to obtain a solid separated matter and a separation liquid; step S4, drying the solid isolate at 60-100 ℃ to obtain Ag-MnO2the/AC composite aldehyde-removing material.
The method of loading manganese oxide on porous carbon and then loading silver is adopted, so that the three aldehyde-removing materials form effective compounding. Firstly, manganese oxide is loaded on porous carbon by using a potassium permanganate solution. In the step, the porous carbon is not calcined, but is contacted with a potassium permanganate solution, so that the potassium permanganate and the activated carbon are subjected to oxidation-reduction reaction, manganese oxide is loaded on the porous carbon, and meanwhile, the potassium permanganate plays an etching role in the activated carbon, so that the pore structure of the porous carbon is further enriched. In addition, the manganese oxide is loaded before the Ag is loaded, so that the Ag cannot be wrapped in MnO2The Ag cannot function because of the inside. Secondly, by Ag+The solution contacts with the porous carbon, the aim of loading the nano Ag elementary substance on the porous carbon is achieved by utilizing the reducibility of the porous carbon, dangerous medicaments such as sodium borohydride and the like are not needed to be used as reducing agents in the process, and the operation danger is reduced.Finally, carrying out solid-liquid separation and drying to obtain Ag-MnO2the/AC composite aldehyde-removing material does not form shielding on the manganese dioxide because the particle size of the loaded nano silver is small and the upper limit of the loading amount of the nano silver is much lower than that of the manganese dioxide. This application is through removing the aldehyde material with three kinds and combining, the aldehyde material that removes that forms is removing the aldehyde in-process, utilize the adsorption of active carbon to adsorb formaldehyde, formaldehyde after the absorption (even not adsorbed also can) is formed carbon dioxide and water by catalytic oxidation under the effect of manganese oxide and nanometer silver, thereby overcome the short problem of life-span that the physical absorption of active carbon is limited to lead to, and the problem of toxic substance has also been avoided producing, it is thus visible, the aldehyde material that removes of this application effectively exerts three kinds of materials removes aldehyde effect and Ag's bacteriostatic action, the aldehyde efficiency that removes of aldehyde material of unit volume has greatly been promoted. Meanwhile, the method is simple, low in risk and low in cost, and is suitable for industrial large-scale production.
In a preferred embodiment of the present application, the step S1 preferably includes: carrying out first stirring and mixing on a potassium permanganate solution and porous carbon for first preset time to obtain a first composite system; preferably, the stirring speed of the first stirring and mixing is 300-800 r/min, and the first predetermined time is 10-60 min. Due to the uneven void structure of the porous carbon, the reaction degree of each part of the porous carbon is greatly different in the process that the porous carbon is immersed in a potassium permanganate solution to react with the potassium permanganate solution. Through rapid stirring, the potassium permanganate solution rapidly flows in the gaps of the porous carbon, so that each part of the porous carbon can rapidly and effectively react with potassium permanganate, manganese oxide is uniformly distributed on the surface of the porous carbon, a large amount of manganese oxide is uniformly loaded on the surface of the porous carbon in a short time, the preparation time is shortened, the preparation method is more suitable for large-scale industrial production, and the aldehyde removal stability and effect of the aldehyde removal material are improved.
In order to prepare the aldehyde-removing material with better aldehyde-removing effect and improve the aldehyde-removing effect, the concentration of potassium permanganate in the potassium permanganate solution is preferably 0.05-0.5 mol/L. Typically, the potassium permanganate solution and the porous carbon are mixed in equal volumes, which is not an absolute equal volume, and which can be within a range of ± 20%.
In a preferred embodiment of the present application, the step S2 preferably includes: mixing the first composite system with Ag+And carrying out second stirring and mixing on the solution for second preset time to obtain a second composite system, wherein preferably, the stirring speed of the second stirring and mixing is 300-800 r/min, and the second preset time is 10-60 min. Through rapid stirring, Ag is made+Has higher probability of contacting with the porous carbon in unit time, and increases the reaction speed. At the same time, Ag+The rapid flowing of the solution in the gaps of the porous carbon is also beneficial to the uniform reaction on the surface of the porous carbon, so that the Ag simple substance is uniformly distributed on the surface of the porous carbon. Thus, use is made of p-Ag+The solution is rapidly stirred, so that the aldehyde removing material with more Ag elementary substances distributed on the surface can be obtained in a short time, and the aldehyde removing effect is effectively improved.
In order to improve the reaction effect and prepare the aldehyde removing material with better aldehyde removing effect, the material preferably contains Ag+Ag in solution+The concentration of (b) is 0.01-0.1 mol/L. The above Ag+Control of solution concentration, benefiting Ag+The solution is highly dispersed on the porous carbon and reduced in situ to form the nano silver. Usually, Ag+The solution and porous carbon were mixed in equal volumes, which were not absolute equal volumes, but within a range of ± 20%.
In the preparation process, Ag+The solution has various choices, preferably containing Ag+The solution is silver nitrate and/or silver acetate. The above Ag+The solution is common chemical reactant, so that the preparation method can be applied in a larger range, and particularly, silver nitrate has better solubility, so that the silver nitrate is most preferable.
In one embodiment, the step S3 preferably includes: filtering the second composite system to obtain a filter cake and a filtrate; and washing the filter cake with water to obtain a solid isolate. And carrying out solid-liquid separation by filtering, and removing impurities on the surface of a filter cake by washing to obtain the semi-finished product aldehyde-removing material. The above-mentioned filtering operation and water washing are common operation means, and are not described herein again.
The porous carbon which can be used in the preparation method has various choices, preferably the porous carbon is selected from any one of activated carbon, mesoporous carbon and carbon fiber, and the porous carbon is common substances, so that the preparation method can be applied in a larger range. The particle size of the porous carbon is preferably 0.2-0.6 mm, so that the aldehyde removing effect of the aldehyde removing material is improved.
In an exemplary embodiment of the present application, there is provided an Ag-MnO2a/AC composite aldehyde-removing material, the Ag-MnO2the/AC composite aldehyde-removing material comprises porous carbon, manganese dioxide and nano silver, wherein the manganese dioxide and the nano silver are loaded on the porous carbon, and the nano silver is exposed in Ag-MnO2the/AC composite removes the internal surface and external surface of aldehyde material. Manganese dioxide and nano silver are loaded on porous carbon, so that the aldehyde removing effect of the aldehyde removing material is effectively improved. On one hand, the nano silver and the manganese dioxide cannot be mutually covered to generate negative influence due to the fact that the size of the nano silver is very small; on the other hand, the porous carbon has short service life, and the original adsorption formaldehyde removal is changed into oxidation formaldehyde removal through the formaldehyde removal catalyst with excellent loading effects of manganese dioxide and nano silver, so that the service life of the formaldehyde removal material can be prolonged, and the use effect is improved.
Preferably, the molar ratio of the nano silver to the manganese dioxide is 0.01-0.1: 1, and the total loading amount of the manganese dioxide and the nano silver on the porous carbon is 5-30%, preferably 5-15%. Through the quality proportion between each material of control for the adsorption of porous carbon, the catalytic action of manganese dioxide, the catalytic action and the bactericidal action of silver obtain mutual synergism, consequently make the aldehyde effect that removes of the compound aldehyde material of this application obtain further promotion. Further preferably, the porous carbon is selected from any one of activated carbon, mesoporous carbon, and carbon fiber. The selection of various raw materials enables the aldehyde-removing material to be suitable for a wider application range.
In one exemplary embodiment of the present application, there is provided an Ag-MnO prepared by the above-mentioned preparation method2the/AC composite aldehyde-removing material. The method of loading manganese oxide on porous carbon and then loading silver is adopted, so that the three aldehyde-removing materials form effective combination and are effectively usedThe aldehyde removing effect of the three materials and the antibacterial effect of Ag are exerted, and the aldehyde removing efficiency of the aldehyde removing material in unit volume is greatly improved.
In an exemplary embodiment of the present application, there is provided an aldehyde removal module comprising a breather vessel and an aldehyde removal material, the aldehyde removal material being any one of the Ag-MnO materials mentioned above2the/AC composite aldehyde-removing material. Using the above Ag-MnO2the/AC composite aldehyde-removing material can achieve better aldehyde-removing effect under the condition of adding the same amount of aldehyde-removing material, and the service life of the aldehyde-removing module is longer.
In an exemplary embodiment of the present application, there is provided an air cleaning apparatus including a filter screen, the filter screen being provided with an aldehyde removing material, the aldehyde removing material being any one of Ag — MnO mentioned above2the/AC composite aldehyde-removing material. Using the above Ag-MnO2the/AC composite aldehyde-removing material can achieve a better aldehyde-removing effect under the condition that the same amount of aldehyde-removing material is added, the service life of the air purifying equipment is longer, and the use stability is higher.
The advantageous effects of the present application will be further described below with reference to examples and comparative examples.
Preparation before preparation
1) Preparing Ag+Silver salt mother solution with concentration of 0.1mol/L
Preparing Ag+Ag with concentration of 0.1mol/L+Weighing a proper amount of silver salt (one of silver nitrate, silver acetate and silver sulfate) according to calculation, dissolving in deionized water, adding volumetric flask to constant volume, mixing, and keeping in shade
2) Preparing 0.5mol/L potassium permanganate mother solution for later use
Preparing a potassium permanganate mother solution with the concentration of 0.5mol/L, weighing proper potassium permanganate according to calculation, metering the volume by using a volumetric flask, and storing for later use after uniform mixing.
Example 1
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 2
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 300r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 3
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 800r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 4
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 10min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 5
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+1mL of the mother solution and1mL of deionized water was mixed to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 300r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 6
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 800r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 7
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+Solution, added to the first composite systemAnd continuously stirring at the stirring speed of 500r/min for 10min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 8
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 60min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 9
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 800r/min for 90min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 10
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 800r/min for 90min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 11
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 50mL of the prepared 0.5mol/L potassium permanganate mother solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in an oven at 80 DEG CThe drying time is 6h to obtain the final Ag-MnO2a/AC filter material.
Example 12
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+The mother solution 0.2mL and 1.8mL deionized water were mixed to form Ag+The concentration of Ag is 0.01mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 13
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) 2mL of the prepared Ag+The concentration of Ag is 0.1mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 14
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at 60 ℃ for 6h to obtain the final Ag-MnO2a/AC filter material.
Example 15
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and fully stirring at the stirring speed of 500r/min for 60min to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and continuously stirring at the stirring speed of 500r/min for 30min to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at 100 ℃ for 6h to obtain the final Ag-MnO2a/AC filter material.
Example 16
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and soaking and retaining for 5 hours to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and soaking and retaining for 5 hours to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Example 17
1) Selecting active carbon with the particle size of 0.2-0.6 mm as a carrier, mixing 5mL of the prepared potassium permanganate mother solution with 45mL of deionized water to form a potassium permanganate solution with the concentration of 0.05mol/L, mixing the potassium permanganate solution with 1g of the active carbon, and soaking and retaining for 24 hours to obtain a first composite system.
2) Taking the prepared Ag+Mixing the mother solution 1mL and deionized water 1mL to form Ag+The concentration of Ag is 0.05mol/L+And adding the solution into the first composite system, and soaking and retaining for 24 hours to obtain a second composite system.
3) Carrying out suction filtration and water washing on the obtained second composite system to obtain a solid isolate, and then drying the obtained solid isolate in a drying oven at the temperature of 80 ℃ for 6 hours to obtain the final Ag-MnO2a/AC filter material.
Comparative example 1
One-step method for synthesizing Ag-MnO2/AC filter material
Taking 5mL of the prepared potassium permanganate mother solution and Ag+Dissolving 1mL of mother solution in 46mL of deionized water to prepare a mixed solution, adding 1g of activated carbon, stirring at 500500r/min for 60min, carrying out suction filtration and washing on the suspension, and drying at 80 ℃ to obtain the Ag-MnO prepared by the one-step method2a/AC filter material.
The contents of manganese dioxide and silver in each filter material were measured by ICP and reported in table 1.
And (3) aldehyde removal performance test:
and (4) evaluating the formaldehyde removal efficiency by adopting an online dynamic detection system.
The formaldehyde removal rate (eta) calculation formula: eta (%) ═ 1-Ct/C0) X 100%, wherein C0And CtRespectively representing the initial concentration (ppm) of HCHO and the concentration of HCHO at the outlet after a certain time of reaction.
The aldehyde removal efficiency at 60min for the filter materials of examples 1 to 17 and comparative example 1 and the activated carbon used in example 1 is reported in table 1.
TABLE 1
MnO2Content (wt%) Ag content (wt%) Efficiency (%) for removing aldehyde at 60min
Example 1 14.21％ 0.475％ 92.5％
Example 2 13.20％ 0.457％ 87.1％
Example 3 13.71％ 0.462％ 85.1％
Example 4 13.13％ 0.455％ 84.6％
Example 5 14.20％ 0.460％ 86.3％
Example 6 14.18％ 0.464％ 90.2％
Example 7 14.21％ 0.446％ 83.3％
Example 8 14.23％ 0.478％ 92.8％
Example 9 12.92％ 0.464％ 84.7％
Example 10 14.10％ 0.437％ 87.5％
Example 11 29.77％ 0.431％ 90.1％
Example 12 14.22％ 0.255％ 89.5％
Example 13 14.21％ 0.782％ 93.1％
Example 14 14.18％ 0.473％％ 92.1％
Example 15 14.22％ 0.474％ 91.9％
Example 16 8.40％ 0.022％％ 55.2％
Example 17 9.17％ 0.025％ 60.1％
Comparative example 1 14.18％ 0.469％ 49.2％
Activated carbon 0 0 10.7％
In example 11, the loading amount of manganese dioxide was large, but the aldehyde removal efficiency was not significantly improved because excessive etching of the activated carbon during the formation of manganese dioxide resulted in a decrease in the adsorbability of the activated carbon.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the method of loading manganese oxide on porous carbon and then loading silver is adopted, so that the three aldehyde-removing materials form effective compounding. Firstly, manganese oxide is loaded on porous carbon by using a potassium permanganate solution. In the step, the porous carbon is not calcined, but is contacted with a potassium permanganate solution, so that the potassium permanganate and the activated carbon are subjected to oxidation-reduction reaction, manganese oxide is loaded on the porous carbon, and meanwhile, the potassium permanganate plays an etching role in the activated carbon, so that the pore structure of the porous carbon is further enriched. In addition, the manganese oxide is loaded before the Ag is loaded, so that the Ag cannot be wrapped in MnO2The Ag cannot function because of the inside. Secondly, by Ag+The solution contacts with the porous carbon, the purpose of loading the Ag elementary substance on the porous carbon is realized by utilizing the reducibility of the porous carbon, and dangerous medicaments such as sodium borohydride and the like are not needed to be used as reducing agents in the process, so that the operation danger is reduced. Finally, carrying out solid-liquid separation and drying to obtain Ag-MnO2/AC composite formaldehyde-removing materialAnd (5) feeding. This application is through removing the aldehyde material with three kinds and combining, the aldehyde material that removes that forms is removing the aldehyde in-process, utilize the adsorption of active carbon to adsorb formaldehyde, formaldehyde after the absorption (even not adsorbed also can) is formed carbon dioxide and water by catalytic oxidation under the effect of manganese oxide and nanometer silver, thereby overcome the short problem of life-span that the physical absorption of active carbon is limited to lead to, and the problem of toxic substance has also been avoided producing, it is thus visible, the aldehyde material that removes of this application effectively exerts three kinds of materials removes aldehyde effect and Ag's bacteriostatic action, the aldehyde efficiency that removes of aldehyde material of unit volume has greatly been promoted. Meanwhile, the method is simple, low in risk and low in cost, and is suitable for industrial large-scale production.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. Ag-MnO2The preparation method of the/AC composite aldehyde-removing material is characterized by comprising the following steps:
step S1, mixing the potassium permanganate solution with the porous carbon for a first preset time to obtain a first composite system;
step S2, mixing the first composite system with Ag+Mixing the solutions for a second preset time to obtain a second composite system;
step S3, performing solid-liquid separation on the second composite system to obtain a solid separated matter and a separation liquid;
step S4, drying the solid isolate at 60-100 ℃ to obtain Ag-MnO2the/AC composite aldehyde-removing material.
2. The method for preparing a composite material according to claim 1, wherein the step S1 includes: carrying out first stirring and mixing on the potassium permanganate solution and the porous carbon for the first preset time to obtain a first composite system; preferably, the stirring speed of the first stirring and mixing is 300-800 r/min, and the first preset time is 10-60 min.
3. The preparation method according to claim 1 or 2, wherein the concentration of potassium permanganate in the potassium permanganate solution is 0.05-0.5 mol/L.
4. The method for preparing a composite material according to claim 1, wherein the step S2 includes: mixing the first composite system with Ag+And carrying out second stirring and mixing on the solution for the second preset time to obtain the second composite system, wherein preferably, the stirring speed of the second stirring and mixing is 300-800 r/min, and the second preset time is 10-60 min.
5. The method according to claim 1 or 4, wherein the Ag-containing material is Ag+In solution of the Ag+The concentration of (b) is 0.01-0.1 mol/L.
6. The method according to claim 1, wherein the Ag-containing material is Ag+The solution is silver nitrate and/or silver acetate.
7. The method for preparing a composite material according to claim 1, wherein the step S3 includes:
filtering the second composite system to obtain a filter cake and a filtrate;
and washing the filter cake with water to obtain the solid isolate.
8. The method according to claim 1, wherein the porous carbon is selected from any one of activated carbon, mesoporous carbon and carbon fiber, and preferably the particle size of the porous carbon is 0.2-0.6 mm.
9. Ag-MnO2the/AC composite aldehyde-removing material is characterized in that the Ag-MnO is2/AC compoundingThe aldehyde-removing material comprises porous carbon, manganese dioxide and nano silver, wherein the manganese dioxide and the nano silver are loaded on the porous carbon, and the nano silver is exposed in the Ag-MnO2The inner surface and the outer surface of the/AC composite aldehyde-removing material; preferably, the molar ratio of the nano silver to the manganese dioxide is 0.01-0.1: 1, the total loading amount of the manganese dioxide and the nano silver on the porous carbon is 5-30%, preferably 5-15%, and further preferably, the porous carbon is selected from any one of activated carbon, mesoporous carbon and carbon fiber.
10. Ag-MnO prepared by the method of any one of claims 1 to 82the/AC composite aldehyde-removing material.
11. An aldehyde removal module comprising a breather container and an aldehyde removal material, wherein the aldehyde removal material is Ag-MnO of claim 9 or 102the/AC composite aldehyde-removing material.
12. An air cleaning device comprising a filter screen on which an aldehyde removing material is disposed, wherein the aldehyde removing material is Ag-MnO according to claim 9 or 102the/AC composite aldehyde-removing material.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112371123A (en) * 2020-11-27 2021-02-19 嘉兴学院 Supported silver-doped manganese dioxide catalyst and preparation method and application thereof
CN112604686A (en) * 2020-11-20 2021-04-06 珠海格力电器股份有限公司 Normal-temperature formaldehyde removal catalyst, and preparation method and application thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03288545A (en) * 1990-04-06 1991-12-18 Unitika Ltd Adsorbent for aldehydes in gas phase
CN105289593A (en) * 2014-06-05 2016-02-03 居怡乐环保科技（上海）有限公司 Preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for long term under room temperature condition
CN106582266A (en) * 2016-11-16 2017-04-26 中山大学 Device and method for purifying combined air pollutants
WO2017114687A1 (en) * 2015-12-30 2017-07-06 Koninklijke Philips N.V. A component for an air filter
CN107243343A (en) * 2016-08-12 2017-10-13 宁波钛安新材料科技有限公司 A kind of air cleaning catalytic composite material and preparation method thereof
CN107649094A (en) * 2017-11-07 2018-02-02 上海纳米技术及应用国家工程研究中心有限公司 Preparation method of purifying formaldehyde composite and products thereof and application
CN110394052A (en) * 2019-08-07 2019-11-01 山东卓高新材料有限公司 A kind of purifying formaldehyde function nano material and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03288545A (en) * 1990-04-06 1991-12-18 Unitika Ltd Adsorbent for aldehydes in gas phase
CN105289593A (en) * 2014-06-05 2016-02-03 居怡乐环保科技（上海）有限公司 Preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for long term under room temperature condition
WO2017114687A1 (en) * 2015-12-30 2017-07-06 Koninklijke Philips N.V. A component for an air filter
CN107243343A (en) * 2016-08-12 2017-10-13 宁波钛安新材料科技有限公司 A kind of air cleaning catalytic composite material and preparation method thereof
CN106582266A (en) * 2016-11-16 2017-04-26 中山大学 Device and method for purifying combined air pollutants
CN107649094A (en) * 2017-11-07 2018-02-02 上海纳米技术及应用国家工程研究中心有限公司 Preparation method of purifying formaldehyde composite and products thereof and application
CN110394052A (en) * 2019-08-07 2019-11-01 山东卓高新材料有限公司 A kind of purifying formaldehyde function nano material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112604686A (en) * 2020-11-20 2021-04-06 珠海格力电器股份有限公司 Normal-temperature formaldehyde removal catalyst, and preparation method and application thereof
CN112371123A (en) * 2020-11-27 2021-02-19 嘉兴学院 Supported silver-doped manganese dioxide catalyst and preparation method and application thereof

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