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Tartarian buckwheat shell with formaldehyde-removing function and preparation method thereof

A technology of tartary buckwheat shell and function, applied in the field of tartary buckwheat shell with formaldehyde removal function and its preparation, can solve the problems of difficult carrier processing, unsuitable for wide use, and low catalytic efficiency, so as to improve photocatalytic efficiency and be suitable for industrialization The effect of simple production and process

Active Publication Date: 2016-01-06
苏州美纳福健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides tartary buckwheat shell with formaldehyde removal function and its preparation method, which is used to solve the problem of low catalytic efficiency of supported titanium dioxide formaldehyde removal products, difficulty in carrier processing, high cost, not environmental protection, and not suitable for widespread use in daily life The problem

Method used

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  • Tartarian buckwheat shell with formaldehyde-removing function and preparation method thereof
  • Tartarian buckwheat shell with formaldehyde-removing function and preparation method thereof
  • Tartarian buckwheat shell with formaldehyde-removing function and preparation method thereof

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Effect test

Embodiment 1

[0036] 1) Preparation of titanium dioxide gel by gel-sol method: drop 1 mL of phosphate-type gemini anionic surfactant into 100 mL of a 1% sericin solution, and adjust the pH to 1 with acetic acid to obtain solution A; add 10 mL of titanium dioxide Add tetrabutyl acid to 100 mL of absolute ethanol and mix to obtain solution B; under high-speed stirring, slowly drop solution B into solution A to form a dispersed colloid, and adjust the pH of the system to 6 with sodium carbonate aqueous solution , aged for 12h to obtain nano-titania gel;

[0037] 2) the metal pretreatment of tartary buckwheat hulls: 10g tartary buckwheat hulls are dipped in the palladium nitrate aqueous solution of 100ppm at 100mL concentration for 30min, then dehydrated and dried, so far palladium ions are attached to the tartary buckwheat hull surface;

[0038] 3) Dilute 10 mL of nano-titanium dioxide gel by 10 times, and immerse the tartary buckwheat husks pretreated in step 2) into it, the immersion tempera...

Embodiment 2

[0046]1) Preparation of titanium dioxide gel by gel-sol method: drop 1 mL of polysorbate surfactant into 100 mL of a 1% polyvinylpyrrolidone solution, and adjust the pH to 1.5 with citric acid to obtain solution A; Tetrabutyl acid was added to 100 mL of anhydrous ethanol and mixed to obtain solution B; in the state of high-speed stirring, slowly drop solution B into solution A to form a dispersed colloid, and adjust the pH of the system with aqueous sodium bicarbonate solution to 6. Ageing for 12h to obtain nano titanium dioxide gel;

[0047] 2) metal pretreatment of tartary buckwheat hulls: 10 g of tartary buckwheat hulls were dipped in 100 mL of a platinum nitrate aqueous solution with a concentration of 100 ppm for 30 min, and then dehydrated and dried, so that platinum ions were attached to the surface of tartary buckwheat hulls;

[0048] 3) Dilute 10 mL of nano-titanium dioxide gel by 10 times, and immerse the tartary buckwheat husks pretreated in step 2) in it, at a temp...

Embodiment 3

[0051] 1) Preparation of titanium dioxide gel by gel-sol method: drop 1 mL of fatty alcohol polyoxyethylene ether type surfactant into 100 mL of chitosan solution with a concentration of 1%, adjust the pH value to 1 with acetic acid, and obtain solution A; Add 10 mL of tetrabutyl titanate to 100 mL of absolute ethanol and mix to obtain solution B; under high-speed stirring, slowly drop solution B into solution A to form a dispersed colloid, and adjust the pH of the system with sodium carbonate aqueous solution To 6, aging for 12h to obtain nano titanium dioxide gel;

[0052] 2) metal pretreatment of tartary buckwheat hulls: 10g of tartary buckwheat hulls are immersed in 100mL concentration of silver nitrate aqueous solution of 100ppm for 30min, then dehydrated and dried, so far silver ions are attached to the surface of tartary buckwheat hulls;

[0053] 3) Dilute 10 mL of nano-titanium dioxide gel by 10 times, and immerse the tartary buckwheat husks pretreated in step 2) into ...

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Abstract

The invention specifically relates to a tartarian buckwheat shell with a formaldehyde-removing function and a preparation method thereof. The tartarian buckwheat shell with the formaldehyde-removing function comprises a tartarian buckwheat shell used as a carrier and a photocatalyst supported by the carrier, and the photocatalyst is nanometer titanium dioxide doped with metal ion. The preparation method comprises the following steps: preparing titanium dioxide gel by using a gel-sol method; performing metal pretreatment of the tartarian buckwheat shell: attaching the metal ion to the surface of the tartarian buckwheat shell; dipping the preprocessed tartarian buckwheat shell into the titanium dioxide gel to carry titanium dioxide, dehydrating, and drying to get the product. The preparation method uses the natural product tartarian buckwheat shell as the carrier of the photocatalyst, prepares nanometer titanium dioxide by using the gel-sol method skillfully, carries the nanometer titanium dioxide with the carrier successfully without any adhesive, and performs metal doping of titanium dioxide simultaneously. Moreover, the degradation rate of formaldehyde of the prepared product in 24 hours is more than 90%, so that the product has wide market prospect in the field of air cleaning.

Description

technical field [0001] The invention belongs to a purification product for removing formaldehyde in the air, and particularly relates to a tartary buckwheat husk with the function of removing formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is one of the typical indoor environmental pollutants with high toxicity, carcinogenic and teratogenic substances, and has become an important killer affecting human health. Greater than 0.08mg / m 3 High formaldehyde concentration can cause eye redness, itching, throat discomfort or pain, hoarseness, sneezing, chest tightness, asthma, dermatitis, etc. A variety of interior decoration materials are likely to release formaldehyde into the room, especially now artificial floors generally use urea-formaldehyde resins and other adhesives that can release formaldehyde, which can continue to release formaldehyde indoors for decades. Medical research has shown that if you are exposed to low concentrations...

Claims

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Application Information

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IPC IPC(8): B01D53/02B01D53/72B01J20/24B01J20/30
Inventor 王作山郑敏
Owner 苏州美纳福健康科技有限公司
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