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Indoor cleaning photocatalyst and preparation method thereof

A catalyst, clean technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., to achieve the effect of prolonging the service life, inhibiting release, and realizing in-situ regeneration

Active Publication Date: 2015-07-15
河北纳诺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the activated carbon used in the common carbon packs currently on the market is granular or powdery. Only when the pore structure of the activated carbon is slightly larger than the diameter of harmful gas molecules can allow harmful gas molecules to completely enter (too large or too small will not No), in order to achieve the best adsorption effect, so the use is limited

Method used

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  • Indoor cleaning photocatalyst and preparation method thereof
  • Indoor cleaning photocatalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The inventor cited 5 groups of implementations for the composition of the photocatalyst, see Table 1, unit: part.

[0030] Table 1

[0031] components

Embodiment 2

[0033] The inventor tested the performance of the photocatalyst obtained in Example 1, as follows.

[0034] (1) Test of adsorption capacity

[0035] The prepared photocatalyst was placed in a sealed box with a volume of 125 L, the simulated pollutants were quantitatively injected into the cubic box, and then the fan and ultraviolet lamp were turned on, and samples were taken for analysis at regular intervals. (Two 6W ultraviolet lamps with a characteristic wavelength of 254nm, a cuboid of 400mm×350mm×100mm).

[0036] The test results are attached figure 1 shown.

[0037] attached by figure 1 It can be seen that the loading of nano-titanium dioxide has no obvious effect on the adsorption capacity of activated carbon fibers, and not only does not cause a decrease in the adsorption capacity, but a slight increase.

[0038] (2) Test of purification performance

[0039] In a 20-square-meter airtight room, irradiate with an ultraviolet germicidal lamp with a power of 6W and a w...

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Abstract

The invention discloses an indoor cleaning photocatalyst and a preparation method thereof. The photocatalyst is prepared from active carbon fiber, mesoporous silica and nano titanium dioxide, wherein the active carbon fiber and the mesoporous silica are used as a composite double carrier and the nano titanium dioxide is loaded on the composite double carrier, so that ultraviolet can directly act on the TiO2 photocatalyst. The light utilization rate is increased, the speed of photocatalytic degradation reaction is expedited and the speed of full oxidation of pollutants is increased.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, and in particular relates to a nano-titanium dioxide composite photocatalyst that can be used for indoor air purification and a preparation method thereof. Background technique [0002] TiO 2 It is the most widely used photocatalyst so far, but pure TiO 2 Nano-catalysts have the problems of easy aggregation, low utilization rate of sunlight, and difficulty in recycling due to small particles, while TiO 2 The adsorption on the surface of blocks or spheres is poor, the photocatalytic efficiency is low, and it takes a long time to achieve the complete degradation of organic matter. Therefore, inert adsorption materials with large specific surface area and pores (zeolite, SiO 2 , activated carbon, etc.) as a carrier to quickly adsorb and purify pollutants and enrich them on the surface is an effective way to improve photocatalytic activity. [0003] Among the common adsorbent materials, act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J20/20B01J20/30B01D53/86
Inventor 张川张千张建平
Owner 河北纳诺新材料科技有限公司
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