CN112604680A - Formaldehyde decomposition material and preparation method and application thereof - Google Patents
Formaldehyde decomposition material and preparation method and application thereof Download PDFInfo
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- CN112604680A CN112604680A CN202011467371.2A CN202011467371A CN112604680A CN 112604680 A CN112604680 A CN 112604680A CN 202011467371 A CN202011467371 A CN 202011467371A CN 112604680 A CN112604680 A CN 112604680A
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- formaldehyde
- solution
- manganese oxide
- formaldehyde decomposition
- permanganate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
A formaldehyde decomposition material and a preparation method and application thereof comprise a substrate and manganese oxide quantum dot-inlaid carbon nano tubes, wherein the manganese oxide quantum dot-inlaid carbon nano tubes are loaded on the substrate, the size of the manganese oxide quantum dots is 0.1-10nm, and the manganese oxide quantum dots are uniformly inlaid on the surfaces of the carbon nano tubes. The invention constructs manganese oxide quantum dots on a substrate to be inlaid with carbon nano tubes. Thereby effectively solving the problem of powder falling of the manganese oxide.
Description
Technical Field
The invention relates to the technical field of chemical catalytic decomposition, in particular to a formaldehyde decomposition material and a preparation method and application thereof.
Background
Formaldehyde is a major pollutant in indoor air, is irritant, has acute and chronic toxicity, and has a carcinogenic risk when inhaled for a long time. Common formaldehyde removal means include physical adsorption, low-temperature plasma decomposition technology, catalytic combustion, plant absorption, photocatalysis and the like. However, the above methods are limited by adsorption capacity, high energy consumption, high temperature, low efficiency and by-products, and formaldehyde management remains a challenging problem. The invention mainly aims at decomposing low-concentration formaldehyde in indoor air.
Manganese oxide has catalytic activity to completely convert formaldehyde into water and carbon dioxide. However, the manganese oxide still has the problems of low catalytic activity at room temperature, loose link with a matrix, easy powder falling and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a formaldehyde decomposition material, a preparation method and application thereof. Thereby effectively solving the problem of powder falling of the manganese oxide.
In order to achieve the purpose, the invention adopts the technical scheme that:
a formaldehyde decomposition material comprises a base material and manganese oxide quantum dot-inlaid carbon nanotubes, wherein the manganese oxide quantum dot-inlaid carbon nanotubes are loaded on the base material, the size of the manganese oxide quantum dots is 0.1-10nm, and the manganese oxide quantum dots are uniformly inlaid on the surface of the carbon nanotubes.
A preparation method of formaldehyde decomposition material comprises the following steps;
a. dissolving a certain amount of starch in deionized water, and uniformly stirring to obtain a solution A;
b. adding a certain amount of permanganate into the solution A, and uniformly stirring to obtain a solution B;
c. soaking the base material in the solution B for a certain time, and then taking out and drying;
d. and roasting the dried base material in an inert atmosphere to obtain the formaldehyde decomposition material.
The concentration of the starch solution in the step a is 1-10 g/L.
The concentration of the permanganate in the step b is 0.1-1 g/L.
The permanganate in the step b is any one of potassium permanganate, sodium permanganate, ammonium permanganate and the like.
And the base material in the step c is any one of a carbon felt and a carbon cloth.
The dipping time in the step c is 0.1-10 h.
The roasting temperature in the step d is 800-1000 ℃.
The roasting time of the step d is 0.5-5 h.
The formaldehyde decomposition material has a function of decomposing VOCs including formaldehyde and filtering PM particles.
The invention has the beneficial effects that:
the preparation process is simple, and the manganese oxide quantum dot embedded carbon nanotube is loaded on the base material without a binder. The preparation cost is low, and noble metals are not needed as active components.
The use is convenient, and the formaldehyde in the air can be efficiently decomposed at room temperature; the wind resistance is low, and the air purifier can be used as an active purification module.
The formaldehyde is safe to use, and is decomposed into carbon dioxide and water, so that secondary pollutants are not generated;
easy regeneration, when the formaldehyde decomposition activity is reduced, the regeneration can be fast and simple, and no toxic and harmful secondary pollutants are generated in the regeneration process.
The manganese oxide in the invention is a nano-scale quantum dot, has very high specific surface area and abundant catalytic active sites, and the carbon nano tube has very good electron transmission capability, can ensure that the manganese oxide has rapid electron transmission capability in the formaldehyde oxidative decomposition process, can effectively and rapidly decompose formaldehyde pollution in indoor air, and can continuously and rapidly remove formaldehyde pollutants in indoor air at room temperature.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
1g of starch was weighed and dissolved in 200ml of deionized water and stirred well to obtain solution A.
Potassium permanganate in an amount of 0.2g was weighed into the solution a and stirred uniformly to obtain a solution B.
And (3) soaking the carbon felt in the solution B, taking out after 1 hour, and drying.
And roasting the dried carbon felt in a nitrogen atmosphere at 800 ℃ for 1h to obtain the formaldehyde decomposition material.
Example 2
1g of starch was weighed and dissolved in 200ml of deionized water and stirred well to obtain solution A.
Potassium permanganate in an amount of 0.5g was weighed into solution a and stirred uniformly to obtain solution B.
And (3) soaking the carbon felt in the solution B, taking out after 1 hour, and drying.
And roasting the dried carbon felt in a nitrogen atmosphere at 800 ℃ for 1h to obtain the formaldehyde decomposition material.
Example 3
1g of starch was weighed and dissolved in 200ml of deionized water and stirred well to obtain solution A.
Potassium permanganate in an amount of 0.5g was weighed into solution a and stirred uniformly to obtain solution B.
And (3) soaking the carbon felt in the solution B, taking out after 1 hour, and drying.
And roasting the dried carbon felt in a nitrogen atmosphere at the roasting temperature of 1000 ℃ for 1h to obtain the formaldehyde decomposition material.
Example 4
1g of starch was weighed and dissolved in 200ml of deionized water and stirred well to obtain solution A.
Potassium permanganate in an amount of 0.5g was weighed into solution a and stirred uniformly to obtain solution B.
And (3) soaking the carbon felt in the solution B, taking out after 1 hour, and drying.
And roasting the dried carbon felt in a nitrogen atmosphere at the roasting temperature of 1000 ℃ for 5 hours to obtain the formaldehyde decomposition material.
Example 5
1g of starch was weighed and dissolved in 200ml of deionized water and stirred well to obtain solution A.
Potassium permanganate in an amount of 0.5g was weighed into solution a and stirred uniformly to obtain solution B.
And (3) soaking the carbon felt in the solution B, taking out after 0.5h, and drying.
And roasting the dried carbon felt in a nitrogen atmosphere at 800 ℃ for 0.5h to obtain the formaldehyde decomposition material.
Example 6
1g of starch was weighed and dissolved in 200ml of deionized water and stirred well to obtain solution A.
Potassium permanganate in an amount of 0.5g was weighed into solution a and stirred uniformly to obtain solution B.
And (3) soaking the carbon felt in the solution B, taking out after 10 hours, and drying.
And roasting the dried carbon felt in a nitrogen atmosphere at the roasting temperature of 1000 ℃ for 5 hours to obtain the formaldehyde decomposition material.
Claims (10)
1. The formaldehyde decomposition material is characterized by comprising a base material and manganese oxide quantum dot-inlaid carbon nanotubes, wherein the manganese oxide quantum dot-inlaid carbon nanotubes are loaded on the base material, the size of the manganese oxide quantum dots is 0.1-10nm, and the manganese oxide quantum dots are uniformly inlaid on the surface of the carbon nanotubes.
2. A preparation method of formaldehyde decomposition material is characterized by comprising the following steps;
a. dissolving a certain amount of starch in deionized water, and uniformly stirring to obtain a solution A;
b. adding a certain amount of permanganate into the solution A, and uniformly stirring to obtain a solution B;
c. soaking the base material in the solution B for a certain time, and then taking out and drying;
d. and roasting the dried base material in an inert atmosphere to obtain the formaldehyde decomposition material.
3. The method for preparing a formaldehyde decomposition material according to claim 2, wherein the concentration of the starch solution in the step a is 1-10 g/L.
4. The method according to claim 2, wherein the concentration of the permanganate in the step b is 0.1 to 1 g/L.
5. The method for preparing a formaldehyde decomposition material as claimed in claim 2, wherein the permanganate is any one of potassium permanganate, sodium permanganate, ammonium permanganate, etc. in step b.
6. The method for preparing a formaldehyde decomposition material as claimed in claim 2, wherein the substrate in step c is any one of a carbon felt and a carbon cloth.
7. The method of claim 2, wherein the dipping time in the step c is 0.1 to 10 hours.
8. The method as claimed in claim 2, wherein the calcination temperature in step d is 800-1000 ℃.
9. The method for preparing a formaldehyde decomposition material as claimed in claim 2, wherein the calcination time of step d is 0.5-5 h.
10. The formaldehyde decomposing material according to claims 1 to 9, characterized in that the formaldehyde decomposing material has a function of decomposing VOCs including formaldehyde and filtering PM particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011467371.2A CN112604680A (en) | 2020-12-14 | 2020-12-14 | Formaldehyde decomposition material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011467371.2A CN112604680A (en) | 2020-12-14 | 2020-12-14 | Formaldehyde decomposition material and preparation method and application thereof |
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| CN112604680A true CN112604680A (en) | 2021-04-06 |
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| CN202011467371.2A Pending CN112604680A (en) | 2020-12-14 | 2020-12-14 | Formaldehyde decomposition material and preparation method and application thereof |
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Citations (9)
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|---|---|---|---|---|
| CN1397490A (en) * | 2001-12-28 | 2003-02-19 | 南京师范大学 | Carbon atom wire and process for preparing carbon nanotube and carbon atom wire by pyrolyzing solid-state carbon source |
| JP2011194393A (en) * | 2010-02-25 | 2011-10-06 | Nisshinbo Holdings Inc | Harmful substance decomposition material |
| CN102333911A (en) * | 2009-02-27 | 2012-01-25 | 巴斯夫公司 | Process for producing carbon nanofibres and/or carbon nanotubes |
| CN104190251A (en) * | 2014-09-09 | 2014-12-10 | 清华大学 | Air purification material and preparation method and application thereof |
| US20150132669A1 (en) * | 2012-05-23 | 2015-05-14 | Basf Se | Process for producing a carbon-supported manganese oxide catalyst and its use in rechargeable lithium-air batteries |
| CN107032326A (en) * | 2017-04-19 | 2017-08-11 | 广东工业大学 | A kind of method that solid catalysis prepares spiral carbon nano pipe |
| CN107537473A (en) * | 2017-07-20 | 2018-01-05 | 中山大学 | A kind of nanometer Mn catalyst of room temperature catalytic oxidation formaldehyde and preparation method thereof |
| CN108554402A (en) * | 2018-04-04 | 2018-09-21 | 清华大学 | Manganese dioxide/carbon cloth composite material and preparation method and application and air cleaning unit |
| US20190193055A1 (en) * | 2017-12-22 | 2019-06-27 | Lumileds Holding B.V. | Catalyst for catalyzing formaldehyde oxidation and the preparation and use of the same |
-
2020
- 2020-12-14 CN CN202011467371.2A patent/CN112604680A/en active Pending
Patent Citations (9)
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| CN1397490A (en) * | 2001-12-28 | 2003-02-19 | 南京师范大学 | Carbon atom wire and process for preparing carbon nanotube and carbon atom wire by pyrolyzing solid-state carbon source |
| CN102333911A (en) * | 2009-02-27 | 2012-01-25 | 巴斯夫公司 | Process for producing carbon nanofibres and/or carbon nanotubes |
| JP2011194393A (en) * | 2010-02-25 | 2011-10-06 | Nisshinbo Holdings Inc | Harmful substance decomposition material |
| US20150132669A1 (en) * | 2012-05-23 | 2015-05-14 | Basf Se | Process for producing a carbon-supported manganese oxide catalyst and its use in rechargeable lithium-air batteries |
| CN104190251A (en) * | 2014-09-09 | 2014-12-10 | 清华大学 | Air purification material and preparation method and application thereof |
| CN107032326A (en) * | 2017-04-19 | 2017-08-11 | 广东工业大学 | A kind of method that solid catalysis prepares spiral carbon nano pipe |
| CN107537473A (en) * | 2017-07-20 | 2018-01-05 | 中山大学 | A kind of nanometer Mn catalyst of room temperature catalytic oxidation formaldehyde and preparation method thereof |
| US20190193055A1 (en) * | 2017-12-22 | 2019-06-27 | Lumileds Holding B.V. | Catalyst for catalyzing formaldehyde oxidation and the preparation and use of the same |
| CN108554402A (en) * | 2018-04-04 | 2018-09-21 | 清华大学 | Manganese dioxide/carbon cloth composite material and preparation method and application and air cleaning unit |
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