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High-efficiency formaldehyde removing spray preparation method

A formaldehyde and spray technology, applied in the field of preparation of high-efficiency formaldehyde-removing sprays, can solve the problems of high efficiency and low formaldehyde removal efficiency, and achieve the effects of high formaldehyde efficiency, high formaldehyde removal efficiency, and high formaldehyde removal efficiency.

Inactive Publication Date: 2018-08-24
常州德维勒新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of existing photocatalysts with high efficiency under ultraviolet light and low formaldehyde removal efficiency under visible light, and provide a sequential alcoholysis method to uniformly dope tin into nano-titanium dioxide to change the bandgap width of titanium dioxide To improve its formaldehyde removal efficiency under visible light, and use the powder as a basis to coordinate negative ion powder to prepare a preparation method for high-efficiency formaldehyde removal spray

Method used

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Effect test

Embodiment 1

[0016] Take tin chloride, titanium tetrachloride and ethanol (the mol ratio of titanium tetrachloride and tin chloride is 1:0.1; The mol ratio of titanium tetrachloride and ethanol is 1:40), at first titanium tetrachloride Add it into ethanol, adjust the pH=2~3 by dropwise adding acetic acid, stir to make it fully dissolved; then add tin chloride to the solution, stir to make it fully dissolved. Next, raise the temperature of the solution to a certain temperature (70°C) and keep it for a period of time (1 hour), and then adjust the pH ≈ 7 by adding ammonia water dropwise to obtain a solid powder, which is centrifugally washed, dried and dried at a high temperature (800°C) ) after calcining for a certain period of time (1 hour) to obtain tin-doped nano-titanium dioxide powder. Mix the above powder, negative ion powder with a certain amount of dispersant and deionized water (the mass ratio of tin-doped nano-titanium dioxide powder, negative ion powder, dispersant and deionized w...

Embodiment 2

[0018] Take tin chloride, titanium tetrachloride and ethanol (the mol ratio of titanium tetrachloride and tin chloride is 1:0.2; The mol ratio of titanium tetrachloride and ethanol is 1:50), at first titanium tetrachloride Add it into ethanol, adjust the pH=2~3 by dropwise adding acetic acid, stir to make it fully dissolved; then add tin chloride to the solution, stir to make it fully dissolved. Next, raise the temperature of the solution to a certain temperature (80°C) and keep it for a period of time (2 hours), and then adjust the pH ≈ 7 by adding ammonia water to obtain a solid powder, which is centrifugally washed, dried and dried at a high temperature (700°C) ) after calcining for a certain period of time (3 hours) to obtain tin-doped nano-titanium dioxide powder. Mix the above powder, negative ion powder with a certain amount of dispersant and deionized water (the mass ratio of tin-doped nano-titanium dioxide powder, negative ion powder, dispersant and deionized water is...

Embodiment 3

[0020] Take tin chloride, titanium tetrachloride and ethanol (the mol ratio of titanium tetrachloride and tin chloride is 1:0.01; The mol ratio of titanium tetrachloride and ethanol is 1:60), at first titanium tetrachloride Add it into ethanol, adjust the pH=2~3 by dropwise adding acetic acid, stir to make it fully dissolved; then add tin chloride to the solution, stir to make it fully dissolved. Next, raise the temperature of the solution to a certain temperature (60°C) and maintain it for a period of time (0.5 hours), then adjust the pH ≈ 7 by adding ammonia water dropwise to obtain a solid powder, which is centrifugally washed, dried and dried at high temperature (900°C) ) after calcining for a certain period of time (0.5 hours) to obtain tin-doped nano-titanium dioxide powder. Mix the above powder, negative ion powder with a certain amount of dispersant and deionized water (the mass ratio of tin-doped nano-titanium dioxide powder, negative ion powder, dispersant and deioni...

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Abstract

The invention relates to a high-efficiency formaldehyde removing spray preparation method. The method comprises the following specific operation steps: 1) weighing stannic chloride, titanium tetrachloride and ethyl alcohol and adding the titanium tetrachloride into the ethyl alcohol to perform alcoholysis; dropwise adding acetic acid to adjust a pH to be equal to 2 to 3 and stirring to make the acetic acid fully react; then adding the stannic chloride into a solution to perform secondary alcoholysis and stirring to make the stannic chloride fully react; 2) warming the solution and keeping fora period, then dropwise adding ammonium hydroxide to adjust a pH to be about 7, precipitating to obtain solid powder, centrifuging and washing the solid powder and drying and roasting under high temperature to obtain tin doped nano titanium dioxide powder; 3) mixing the powder, negative ion powder, a dispersant and deionized water, adding into a nano grinding machine, controlling an appropriate grinding condition and finally preparing dispersion liquid, namely the high-efficiency for formaldehyde removing spray disclosed by the invention. The high-efficiency formaldehyde removing spray prepared by the method disclosed by the invention has a high formaldehyde removing efficiency, not only has a high formaldehyde removing efficiency under ultraviolet irradiation, but also has a higher formaldehyde removing efficiency under visible light irradiation; furthermore, formaldehyde removal is effective for a long time, a formaldehyde removing process achieves greenness and environmental friendliness, and no toxic and harmful matter is generated.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a preparation method of a high-efficiency formaldehyde-removing spray. Background technique [0002] Formaldehyde is a colorless, irritating, water-soluble gas. It is a highly toxic substance, and formaldehyde ranks second on the list of priority control of toxic chemicals in my country. [0003] There is always a pungent smell in the renovated room, and if you stay there for a long time, people will have adverse reactions such as dizziness, glare, sore throat, and chest tightness, which are mostly intuitive manifestations of the hazards of formaldehyde. According to the analysis of indoor air testing data from all over the country, there are different degrees of air pollution in the indoor air after decoration, among which formaldehyde pollution is the most serious. The main sources of indoor formaldehyde are interior decoration materials and furniture, espe...

Claims

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Application Information

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IPC IPC(8): B01D53/90B01D53/72
CPCB01D53/007B01D53/8668B01D53/90B01D2255/20707B01D2255/2094B01D2259/804B01D2259/802B01D2258/06B01D2255/802
Inventor 张春明钟伟张鑫
Owner 常州德维勒新材料科技有限公司
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