Photocatalytic air purification sticker preparation method

A technology for purifying gas and sticky notes, applied in the field of air purification, can solve problems such as easy peeling off of catalyst coating, and achieve the effect of improving atmospheric safety and comfort, no operating costs, and no secondary pollution

Active Publication Date: 2017-09-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, especially when the catalyst coating is placed vertically, due to the influence of gravity and humidity, the catalyst coating is easy to peel off
So far, there is no technical report on the use of plasma technology to treat the substrate material to enhance the adhesion between the photocatalyst coating and the surface of the substrate film material

Method used

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  • Photocatalytic air purification sticker preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1 (impregnation), using improved impregnation method to prepare 1wt% Au / TiO 2 catalyst of light. (1) Take an appropriate amount of 2.4×10 - 2 The mol / L chloroauric acid solution was poured into the TiO 2 (P25, Deggusa) powder in a beaker, using a glass rod to stir for 5 minutes; (2) immersion in the dark for 12 hours; (3) washing the catalyst with ammonia water and deionized water respectively, and separating the solid-liquid phase by a centrifuge, in order to further Thoroughly remove chloride ions, and repeat this step again; (4) put the washed catalyst into an oven at 80° C. to dry for 8 hours, and store it in a refrigerator away from light.

[0024] In step 2 (substrate treatment), the 2.5cmx2.5cm ordinary glass sheet is treated by oxygen plasma method.

[0025] Step 3 (coating and activation), take 1.8g deionized water and add to 0.135g Au / TiO 2 In the powder, stir on a magnetic stirrer for 15 minutes; take 0.215 mg of the turbid liquid and drop it evenly...

Embodiment 2

[0028] Adopt the catalyst preparation method in the step one of embodiment 1, prepare fresh 3%Au / TiO 2 catalyst of light. Using the base treatment method in step 2 of Example 1, the polyimide base film was treated with oxygen plasma. Adopt the catalyst coating method in the step 3 of embodiment 1, prepare Au / TiO 2 coating. Activate the catalyst coating with oxygen plasma, apply non-stick adhesive on the other side, and finally get a post-it note for photocatalytic purification of gas. Stick it on the wall of the living room, choose to start the fan at noon when the incident light intensity of the sun is the highest, and start the humidifier at the same time when the humidity is low, so as to purify the indoor air with photocatalysis.

Embodiment 3

[0030] Adopt the catalyst preparation method in the step one of embodiment 1, prepare fresh Au / SiO 2 catalyst of light. Argon plasma treatment was performed on the substrate polyethylene film. Adopt the catalyst coating method in the step 3 of embodiment 1, prepare Au / SiO 2 coating. Activate the catalyst coating with oxygen plasma, apply non-stick adhesive on the other side, and finally get a post-it note for photocatalytic purification of gas. Stick it on the wall of the bathroom, turn on the fluorescent lamp, start the ventilation fan, and purify the indoor air with photocatalysis.

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Abstract

The invention belongs to the technical field of air purification and provides a photocatalytic air purification sticker preparation method. A photocatalyst is prepared according to a solution impregnation method and applied to the surface of a single side of a substrate film subjected to plasma treatment, and after activation of a photocatalyst coating, the other side of the substrate film with the photocatalyst coating is provided with a sticker adhesive function, so that a photocatalytic air purification sticker is obtained. The photocatalytic air purification sticker is put in an air atmosphere to realize photocatalytic oxidation for removing volatile organic compounds in air under certain temperature, humidity and illumination conditions. The method can be carried out under normal-temperature normal-pressure conditions without secondary pollution and operating cost and is suitable for indoor and outdoor places. The photocatalytic air purification sticker has advantages of convenience in replacement and removal due to catalyst inactivation and durability improvement due to a reinforcement interface of the substrate film and the catalyst coating after surface treatment.

Description

technical field [0001] The invention belongs to the technical field of air purification, and in particular relates to a preparation method and an application of a post-it note for photocatalytic purification of gas. Background technique [0002] Volatile organic compounds (VOCs) are one of the main indoor air pollutants. Volatile organic compounds are toxic and carcinogenic, causing great harm to human health and even threatening human life. Therefore, it is urgent to remove volatile organic compounds in indoor air in time and purify indoor air. [0003] At present, the removal methods of VOCs in indoor air mainly include adsorption, plasma, thermocatalysis and photocatalysis. The adsorption method is to use the strong adsorption capacity of the adsorbent to the adsorbate to remove VOCs. However, due to the limited adsorption capacity of the adsorbent, after reaching the adsorption-desorption equilibrium with the adsorbate, regeneration treatment is required, and the foll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44B01J23/52
CPCB01D53/8687B01D2257/708B01D2258/06B01D2259/802B01D2259/804B01J23/52Y02A50/20
Inventor 朱晓兵金灿李小松刘景林
Owner DALIAN UNIV OF TECH
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