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Teflon superfine fiber supported titanium dioxide photocatalytic membrane and preparation method thereof

A technology of ultrafine fiber and titanium dioxide, applied in the field of photocatalysis, can solve the problems of incomplete removal, secondary pollution, long treatment cycle, etc., and achieve the effects of excellent temperature resistance, stable structure, and good mechanical properties

Inactive Publication Date: 2017-08-18
成都博美实润科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional printing and dyeing wastewater treatment methods usually include adsorption method, chemical coagulation method, electrochemical method, etc. Although these methods are low in cost and simple in operation, they have disadvantages such as long treatment period, incomplete removal, and easy to cause secondary pollution[1]

Method used

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  • Teflon superfine fiber supported titanium dioxide photocatalytic membrane and preparation method thereof
  • Teflon superfine fiber supported titanium dioxide photocatalytic membrane and preparation method thereof
  • Teflon superfine fiber supported titanium dioxide photocatalytic membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Prepare 10% PVA (polymerization degree 1700, alcoholysis degree 88%) aqueous solution; prepare a solution with 60% PTFE emulsion and PVA aqueous solution at a mass ratio of 15:1, and the total solubility of the spinning solution is 45%. Set the spinning parameters: the voltage is 30 kV, the receiving distance is 15 cm, the extrusion rate is 2 mL / h, and the rotating speed of the receiving disc is 200 r / min. Finally, PTFE ultrafine fibers are obtained. Prepare an impregnation solution with tetrabutyl titanate, anhydrous acetic acid, and absolute ethanol at a ratio of 1:2:4, immerse PTFE microfibers in the impregnation solution for 5 hours, dry at 100°C, and place in a muffle furnace Calcined at 450℃ for 10min to prepare TiO 2 / PTFE microfiber catalytic membrane.

[0020] With methylene blue as the degradation target, 100 mL of methylene blue solution with an initial concentration of 5 mg / L was placed in a 250 mL beaker, and 0.5 g of photocatalyst was added. Under the ir...

Embodiment 2

[0026] Prepare a 10% PVA (polymerization degree 1800, alcoholysis degree 88%) aqueous solution; prepare a solution with 60% PTFE emulsion and PVA aqueous solution at a mass ratio of 15:1, and the total solubility of the spinning solution is 40%. Set the spinning parameters: the voltage is 30 kV, the receiving distance is 15 cm, the extrusion rate is 2 mL / h, and the rotating speed of the receiving disc is 200 r / min. Finally, PTFE ultrafine fibers are obtained. Tetrabutyl titanate, anhydrous acetic acid, anhydrous ethanol according to the ratio

[0027] Prepare an impregnating solution with a quality of 1:2:4, place PTFE ultrafine fibers in the impregnating solution for 5 hours, dry at 100°C, and calcinate in a muffle furnace at 450°C for 15 minutes to obtain TiO 2 / PTFE microfiber catalytic membrane.

[0028] With methylene blue as the degradation target, 100 mL of methylene blue solution with an initial concentration of 5 mg / L was placed in a 250 mL beaker, and 0.5 g of photo...

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Abstract

The invention discloses a teflon superfine fiber supported titanium dioxide photocatalytic membrane and a preparation method thereof. The preparation method is characterized by including: using an electrostatic spinning method to prepare PTFE superfine fibers, impregnating the PTFE superfine fibers into a titanium precursor solution, and performing high-temperature sintering to prepare the fiber catalytic membrane containing titanium dioxide. By the preparation method, the PTFE superfine fiber supported titanium dioxide photocatalytic membrane with high photocatalytic efficiency and high recovery utilization rate can be prepared.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a dye wastewater photocatalytic degradation film and a preparation method thereof. Background technique [0002] With the development of industry, environmental problems are becoming more and more serious, especially the pollution of dye wastewater is increasing. Traditional printing and dyeing wastewater treatment methods usually include adsorption method, chemical coagulation method, electrochemical method, etc. Although these methods are low in cost and simple in operation, they have disadvantages such as long treatment period, incomplete removal, and easy to cause secondary pollution[1] . [0003] Titanium dioxide is a semiconductor material. When ultraviolet light is irradiated on the surface, electron-hole pairs are formed on the surface of the semiconductor particle. Anatase titanium dioxide has high catalytic activity and can effectively photocatalytically degrade organic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38C02F1/32C02F101/30
CPCC02F1/32B01J31/38B01J37/08C02F2305/10C02F2101/308B01J35/59B01J35/39
Inventor 邱鸿浩
Owner 成都博美实润科技有限公司
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