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TiO2/tourmaline composite photocatalyst and TiO2/ tourmaline gauze

A technology of tourmaline and composite light, which is applied in the field of materials, can solve the problems of formaldehyde pollution, etc., and achieve the effects of strengthening adsorption and mass transfer, facilitating light absorption, high economy and practicability

Active Publication Date: 2018-03-09
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to propose a TiO 2 / Tourmaline composite photocatalyst and TiO 2 / Tourmaline gauze to overcome the deficiencies of the existing technology and solve the problem of indoor formaldehyde pollution

Method used

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  • TiO2/tourmaline composite photocatalyst and TiO2/ tourmaline gauze
  • TiO2/tourmaline composite photocatalyst and TiO2/ tourmaline gauze
  • TiO2/tourmaline composite photocatalyst and TiO2/ tourmaline gauze

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preparation example Construction

[0040] 1) Preparation of photocatalyst powder

[0041] Using the sol-gel method, take 4ml of glacial acetic acid and add it to 30ml of absolute ethanol, stir magnetically for 10min to make the mixture uniform, then slowly add 10ml of tetrabutyl titanate and stir for 30min to obtain tetrabutyl titanate solution;

[0042] At the same time, take an appropriate amount of tourmaline powder and add it to 20ml of absolute ethanol and sonicate for 30 minutes to obtain a tourmaline powder solution; then slowly add the tetrabutyl titanate solution to the tourmaline powder solution, and stir vigorously for 1 hour to obtain a mixed solution;

[0043] Take 20ml of absolute ethanol, 10ml of deionized water and concentrated hydrochloric acid and mix them evenly so that the pH of the solution is about 1.7. Slowly add this solution dropwise to the mixed solution of tetrabutyl titanate and tourmaline obtained above under vigorous stirring , vigorously stirred for 2h to form a gray sol, and then...

Embodiment 1

[0047] Add TiO2 to 20ml absolute ethanol 2 0.5% tourmaline by mass, and then sonicate for 30 minutes to obtain a tourmaline powder solution.

Embodiment 2

[0049] Add TiO2 to 20ml absolute ethanol 2 1% tourmaline by mass, and then sonicate for 30 minutes to obtain a tourmaline powder solution.

[0050] TiO 2 , Tourmaline, TiO 2 SEM image of / 1% tourmaline, such as figure 1 , figure 2 , image 3 .

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Abstract

The invention provides a TiO2 / tourmaline composite photocatalyst and a TiO2 / tourmaline gauze. A preparation method for the photocatalyst comprises the following steps: adding glacial acetic acid in anhydrous ethanol, and stirring; slowly adding tetrabutyl titanate and stirring to obtain a tetrabutyl titanate solution; adding tourmaline powder in another anhydrous ethanol, and carrying out ultrasound treatment to obtain a tourmaline powder solution; dropwise adding the tetrabutyl titanate solution in the tourmaline solution, and stirring to obtain a mixed solution; uniformly mixing the anhydrous ethanol, deionized water and concentrated hydrochloric acid, then dropwise adding the mixture into the mixed solution, stirring to firm grey sol, and stirring the grey sol at a certain temperatureto form gel; and drying, grinding and calcining the gel to form TiO2 / tourmaline catalyst powder. The bottleneck problem in application of an active photocatalyst and a fixed photocatalyst is solved.The TiO2 / tourmaline composite photocatalyst has an environment additional function of releasing air negative ions, is long in service life, simple and convenient to operate and low in application cost; the quality of air can be improved effectively; and the practical application prospect is remarkable.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a TiO 2 / Tourmaline composite photocatalyst and TiO 2 / Tourmaline gauze. Background technique [0002] With the rapid development of the construction and decoration industry, the wide application of various new materials has greatly increased the content of volatile organic pollutants in the indoor air, leading to increasingly serious indoor air pollution problems. Among them, formaldehyde (HCHO) is determined by the World Health Organization as a carcinogenic and teratogenic substance, which is extremely harmful to human health and has become the focus of indoor air pollution control. The traditional methods of air formaldehyde treatment, physical adsorption, chemical oxidation and biological methods, generally have problems such as limited removal capacity, easy to produce secondary pollution, and high cost. The photocatalytic technology can completely oxidize and decompo...

Claims

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Application Information

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IPC IPC(8): B01J21/16B01J35/02B01D53/86B01D53/72
CPCB01D53/8668B01J21/16B01D2257/708B01J35/00B01J35/30B01J35/39
Inventor 王薇乔娅刘星宇
Owner NANKAI UNIV
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