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Formaldehyde decomposition solution prepared by nano-pollen and nano-carbon as well as preparation method of formaldehyde decomposition solution

A technology of formaldehyde decomposition and carbon nanometers, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve the problems of reducing formaldehyde concentration, low absorption efficiency, low catalytic efficiency, etc., and achieve the effect of cleaning indoor environmental pollution

Inactive Publication Date: 2014-10-15
WUHAN YILANG YIPIN BIOLOGICAL ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Titanium dioxide is an ideal photocatalyst, which can remove formaldehyde and degrade organic matter, but it has the problem of easy agglomeration, resulting in low catalytic efficiency
Activated carbon is often used as a formaldehyde absorption material, mainly through physical adsorption to reduce the concentration of formaldehyde in the air, and the absorption efficiency is low

Method used

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  • Formaldehyde decomposition solution prepared by nano-pollen and nano-carbon as well as preparation method of formaldehyde decomposition solution
  • Formaldehyde decomposition solution prepared by nano-pollen and nano-carbon as well as preparation method of formaldehyde decomposition solution
  • Formaldehyde decomposition solution prepared by nano-pollen and nano-carbon as well as preparation method of formaldehyde decomposition solution

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preparation example Construction

[0023] The present invention also provides a kind of preparation method of the formaldehyde decomposition solution of pollen carbon nano, comprising the following steps:

[0024] (1) Add distilled water into the stirring tank, add titanium dioxide, activated carbon, and pollen in turn, and stir for 2-8 hours;

[0025] (2) Add the stirred solution into the reaction vessel, heat the reaction vessel, and add ethyl acetate when heated to 30-40° C. to dissolve titanium dioxide, activated carbon and pollen;

[0026] (3) Warm up the dissolved solution to 45-55°C, keep it warm for 30 minutes, and stop heating;

[0027] (4) Cool the solution after stopping the heating to room temperature, and filter it with a filter screen to obtain a formaldehyde decomposition solution without impurities.

[0028] In this embodiment: the filter screen is preferably an 80-mesh filter screen, which is convenient for filtering impurities.

[0029] Further, the following steps are also included:

[003...

Embodiment 1

[0036] A kind of preparation method of the formaldehyde decomposition solution of pollen carbon nanometer, comprises the following steps:

[0037] Soak 175μm powdered activated carbon in 20ml of a mixed solution of 15% nitric acid and 15% hydrogen peroxide, place it at room temperature for 8 hours, take it out and dry it at 130°C; place the pretreated activated carbon in manganese nitrate solution In the medium, soak at room temperature for 8 hours, take it out and dry it at 130°C for 2 hours, then roast the dried activated carbon at 200°C for 2 hours in a vacuum environment or under the protection of nitrogen to prepare modified activated carbon. Add distilled water into the stirred tank, add 30nm titanium dioxide, 175μm modified activated carbon, and 250μm pollen in sequence, and stir for 2 hours; add the stirred solution into the reaction vessel, heat the reaction vessel, and add acetic acid when heated to 30°C Ethyl ester to dissolve titanium dioxide, activated carbon, and...

Embodiment 2

[0040] A kind of preparation method of the formaldehyde decomposition solution of pollen carbon nanometer, comprises the following steps:

[0041] Soak 175μm powdered activated carbon in 20ml of a mixed solution of 15% nitric acid and 15% hydrogen peroxide, place it at room temperature for 8 hours, take it out and dry it at 130°C; place the pretreated activated carbon in manganese nitrate solution In the medium, soak at room temperature for 8 hours, take it out and dry it at 130°C for 2 hours, and then roast the dried activated carbon at 200°C for 2 hours in a vacuum environment or under the protection of nitrogen to obtain modified activated carbon. Add distilled water into the stirred tank, add 10nm titanium dioxide, 175 μm modified activated carbon, and 250 μm pollen in sequence, and stir for 2 hours; add the stirred solution into the reaction vessel, heat the reaction vessel, and add acetic acid when heated to 30°C Ethyl ester to dissolve titanium dioxide, activated carbon...

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Abstract

The invention provides a formaldehyde decomposition solution prepared by nano-pollen and nano-carbon. The formaldehyde decomposition solution comprises components in percentage by weight as follows: 10% of pollen, 1% of titanium dioxide, 5% of activated carbon, 0.1% of ethyl acetate and 83.9% of distilled water. According to the formaldehyde decomposition solution prepared by nano-pollen and nano-carbon, titanium dioxide is taken as a photocatalyst to decompose formaldehyde and other indoor pollutants into CO2 and H2O; activated carbon contains a large quantity of micro pores and has a huge specific surface area, so that a photo-catalytic reaction environment is provided for titanium dioxide, the influence of the poor catalytic effect caused by titanium dioxide agglomeration is reduced, the reaction speed of photocatalytic degradation of the indoor pollutants is increased, and meanwhile, activated carbon can effectively remove odor and can absorb other pollutants in a room. The invention further provides a preparation method of the formaldehyde decomposition solution.

Description

technical field [0001] The invention relates to a formaldehyde decomposition solution, in particular to a pollen carbon nano formaldehyde decomposition solution and a preparation method thereof. Background technique [0002] Due to the use of artificial boards, wallpapers, foam plastics and other materials in newly decorated rooms, the indoor formaldehyde concentration is mostly higher than the national standard. Formaldehyde has a strong stimulating effect on the skin, eyes and respiratory tract, and has an anesthetic effect on the central nervous system. Formaldehyde coagulates proteins, is genotoxic to humans, and is also a mutagen. Low concentrations of formaldehyde can cause damage to the respiratory tract, and long-term exposure may damage the health of the respiratory system. [0003] Titanium dioxide is an ideal photocatalyst, which can remove formaldehyde and degrade organic matter, but it has the problem of easy agglomeration, resulting in low catalytic efficienc...

Claims

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Application Information

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IPC IPC(8): B01D53/77B01D53/72
Inventor 阚斌程恒林
Owner WUHAN YILANG YIPIN BIOLOGICAL ENVIRONMENTAL PROTECTION TECH
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