Zinc sulfide quantum dot coated titanium dioxide air purification material and preparation method

An air purification material, titanium dioxide technology, applied in the field of air purification, can solve the problems of narrow light absorption frequency band, low luminous efficiency of quantum dots, affecting development and application, etc., and achieve the effect of uniform size, high luminous efficiency and photochemical stability

Inactive Publication Date: 2019-03-29
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the widely used titanium dioxide air purification material has a narrow light absorption band, and the existing technology of mechanic...

Method used

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  • Zinc sulfide quantum dot coated titanium dioxide air purification material and preparation method

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Experimental program
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Effect test

Embodiment 1

[0030] (1) Add nano-titanium dioxide, activated carbon, and diatomaceous earth into polyethylene glycol, disperse evenly, and then perform high-pressure homogeneous heating to obtain an electrospinning liquid; during high-pressure homogeneous heating, the pressure is 880MPa, and the temperature is 108 ℃, the time is 35min;

[0031] Wherein: 17 parts by weight of nano-titanium dioxide, 9 parts by weight of activated carbon, 9 parts by weight of diatomaceous earth, and 65 parts by weight of polyethylene glycol;

[0032] (2) The electrospinning solution prepared in step (1) is subjected to an electrospinning process to make a titanium dioxide composite fiber;

[0033] (3) Add the zinc salt into the aqueous solution containing carboxymethyl cellulose, stir evenly to form a mixed solution, then add the acidic solution containing sulfide, and continue to stir evenly to obtain a mixed solution; the zinc salt is zinc chloride; the sulfide It is thioacetamide; the acidic solution is a...

Embodiment 2

[0039] (1) Add nano-titanium dioxide, activated carbon, and diatomaceous earth to polyethylene glycol, disperse evenly, and then perform high-pressure homogeneous heating to obtain an electrospinning solution; during high-pressure homogeneous heating, the pressure is 80MPa and the temperature is 100 ℃, the time is 40min;

[0040] Wherein: 15 parts by weight of nano-titanium dioxide, 8 parts by weight of activated carbon, 7 parts by weight of diatomaceous earth, and 70 parts by weight of polyethylene glycol;

[0041] (2) The electrospinning solution prepared in step (1) is subjected to an electrospinning process to make a titanium dioxide composite fiber;

[0042] (3) Add the zinc salt into the aqueous solution containing carboxymethyl cellulose, stir evenly to form a mixed solution, then add the acidic solution containing sulfide, and continue to stir evenly to obtain a mixed solution; the zinc salt is zinc nitrate; the sulfide is Thiourea; acidic solution is hydrochloric aci...

Embodiment 3

[0048] (1) Add nano-titanium dioxide, activated carbon, and diatomaceous earth into polyethylene glycol, disperse evenly, and then perform high-pressure homogeneous heating to obtain an electrospinning solution; during high-pressure homogeneous heating, the pressure is 100 MPa, and the temperature is 120 ℃, the time is 30min;

[0049] Wherein: 20 parts by weight of nano-titanium dioxide, 12 parts by weight of activated carbon, 10 parts by weight of diatomaceous earth, and 58 parts by weight of polyethylene glycol;

[0050] (2) The electrospinning solution prepared in step (1) is subjected to an electrospinning process to make a titanium dioxide composite fiber;

[0051] (3) Add the zinc salt into the aqueous solution containing carboxymethyl cellulose, stir evenly to form a mixed solution, then add the acidic solution containing sulfide, and continue to stir evenly to obtain a mixed solution; the zinc salt is zinc acetate; the sulfide It is sodium sulfide; the acidic solution...

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Abstract

Relating to the air purification field, the invention discloses a zinc sulfide quantum dot coated titanium dioxide air purification material and a preparation method. The preparation process includes:(1) adding nano-titanium dioxide, activated carbon and diatomite into polyethylene glycol to prepare an electrospinning solution; (2) conducting electrospinning to prepare titanium dioxide compositefiber; (3) mixing a zinc salt, an aqueous solution containing carboxymethyl cellulose and an acidic solution containing sulfide to obtain a mixed solution; (4) adding the titanium oxide composite fiber into the mixed solution for reaction, thus obtaining the zinc sulfide quantum dot coated titanium dioxide air purification material. In the composite material prepared by the method provided by theinvention, the formed zinc sulfide quantum dot microspheres are uniform in size, and have high luminous efficiency, photochemical stability and other excellent performance, the stable luminous efficiency can improve the photocatalytic performance of titanium dioxide, and organic pollutants adsorbed on the fiber material can be effectively degraded.

Description

technical field [0001] The invention relates to the field of air purification, and discloses a zinc sulfide quantum dot-coated titanium dioxide air purification material and a preparation method. Background technique [0002] With the improvement of people's living standards and the use of a large number of chemical raw materials for interior decoration, a large number of organic pollutants also enter the room. In the prior art, in order to improve the indoor air environment, a large number of novel green environmental protection purification materials continue to appear. Among them, the photocatalyst exhibits a better air purification function. After being excited by visible light or ultraviolet light, the surface of the photocatalyst particle produces active substances, which can perform oxidation or reduction reactions on the target object. It has the functions of pollutant removal, air purification, antibacterial, dust removal, and anti-fog. and other environmental puri...

Claims

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Application Information

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IPC IPC(8): B01J27/04C09K11/02C09K11/56B01D53/86B01D53/72B01D53/44
CPCB01J27/04B01D53/007B01D53/8668B01D53/8687B01D2257/704B01D2258/06B01D2259/804B01J35/004C09K11/025C09K11/565
Inventor 陈庆高锋
Owner CHENDU NEW KELI CHEM SCI CO LTD
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