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Graphene/titanium carbide water body purifying composite membrane material

A water purification and titanium carbide technology, which is used in adsorption water/sewage treatment, water/sludge/sewage treatment, permeation/dialysis water/sewage treatment, etc., to improve performance, improve hydrophilic performance, and remove heavy metal ions. performance effect

Inactive Publication Date: 2018-01-09
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of no pressure difference, it is still a great challenge to directly apply two-dimensional material-based membrane materials to remove heavy metal ions in water.

Method used

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  • Graphene/titanium carbide water body purifying composite membrane material
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  • Graphene/titanium carbide water body purifying composite membrane material

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Effect test

Embodiment 1

[0033] 1 g Ti 3 AlC 2 The raw material was added to 10 mL of hydrochloric acid solution (9 mol / L) dissolved with 1 g LiF, and the temperature of the solution was kept at 35 ° C. After 24 hours of reaction, it was washed with deionized water by centrifugation until the pH of the supernatant was 5-6, and the product was redispersed In 200 mL of deionized water, ultrasonically in a water bath for 1 hour, then centrifuge at 3500 rpm for 1 hour, and take the upper liquid to obtain titanium carbide nanosheet colloids. Dendritic polyethylenimine solution (86 mg / mL, 2 mL) was added dropwise to graphene oxide aqueous solution (0.5 mg / mL, 34.5 mL), refluxed at 90 °C for 2 hours and washed by centrifugation, and the obtained graphene was re- Disperse in deionized water to obtain a graphene dispersion. The prepared graphene dispersion (0.5 mg / mL, 1.2 mL) was added dropwise into titanium carbide nanosheet colloid (0.5 mg / mL, 22.8 mL), stirred at room temperature for 1 hour, and filtered ...

Embodiment 2

[0035] 1 g Ti 3 AlC 2The raw material was added to 10 mL of hydrochloric acid solution (9 mol / L) dissolved with 1 g LiF, and the temperature of the solution was kept at 35 ° C. After 24 hours of reaction, it was washed with deionized water by centrifugation until the pH of the supernatant was 5-6, and the product was redispersed In 200 mL of deionized water, ultrasonically in a water bath for 1 hour, then centrifuge at 3500 rpm for 1 hour, and take the upper liquid to obtain titanium carbide nanosheet colloids. Dendritic polyethylenimine solution (86 mg / mL, 2 mL) was added dropwise to graphene oxide aqueous solution (0.5 mg / mL, 34.5 mL), refluxed at 90 °C for 2 hours and washed by centrifugation, and the obtained graphene was re- Disperse in deionized water to obtain a graphene dispersion. The prepared graphene dispersion (0.5 mg / mL, 2.4 mL) was added dropwise into the titanium carbide nanosheet colloid (0.5 mg / mL, 21.6 mL), stirred at room temperature for 1 hour, and filter...

Embodiment 3

[0037] 1 g Ti 3 AlC 2 The raw material was added to 10 mL of hydrochloric acid solution (9 mol / L) dissolved with 1 g LiF, and the temperature of the solution was kept at 35 ° C. After 24 hours of reaction, it was washed with deionized water by centrifugation until the pH of the supernatant was 5-6, and the product was redispersed In 200 mL of deionized water, ultrasonically in a water bath for 1 hour, then centrifuge at 3500 rpm for 1 hour, and take the upper liquid to obtain titanium carbide nanosheet colloids. Dendritic polyethylenimine solution (86 mg / mL, 2 mL) was added dropwise to graphene oxide aqueous solution (0.5 mg / mL, 34.5 mL), refluxed at 90 °C for 2 hours and washed by centrifugation, and the obtained graphene was re- Disperse in deionized water to obtain a graphene dispersion. The prepared graphene dispersion (0.5 mg / mL, 4.8 mL) was added dropwise to the titanium carbide nanosheet colloid (0.5 mg / mL, 19.2 mL), stirred at room temperature for 1 hour, and filtere...

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Abstract

The invention discloses a graphene / titanium carbide water body purifying composite membrane material. According to the graphene / titanium carbide water body purifying composite membrane material, a titanium carbide nano-sheet colloid is firstly prepared by adopting Ti3AlC2 as a raw material; afterwards, a graphene nano sheet is prepared through a method for reducing graphene oxide by (dendritic) polyethyleneimine; the prepared graphene dispersion liquid is dropwise added into a titanium carbide nano-sheet colloid solution, the vacuum suction filtration is carried out, and then an obtained composite membrane material is soaked in a hydrochloric acid solution, so as to prepare for obtaining the graphene / titanium carbide water body purifying composite membrane material. The graphene / titanium carbide water body purifying composite membrane material prepared by the invention, compared with a graphene membrane, a titanium carbide membrane and a composite membrane which is not subjected to thetreatment with hydrochloric acid, has the higher performance of removing a heavy metal ion in a water body. A method is simple in preparation process and mild in reaction condition and the membrane material can be realized in effective recovery and separation and has the important practical application value to the removal of the heavy metal ion in the water body.

Description

technical field [0001] The invention belongs to the field of composite membrane material preparation and water treatment, in particular to a graphene / titanium carbide composite membrane material for water purification. Background technique [0002] Human beings are facing a global crisis of drinking water shortage. Heavy metal ion pollution aggravates this problem and directly threatens human health. The application of adsorption technology to remove heavy metal ion pollution in water is of great significance to the realization of water purification. Two-dimensional materials have a large specific surface area and can effectively adsorb heavy metal ions in water, which is a class of adsorption materials with great application prospects. However, most two-dimensional adsorption materials usually remove heavy metal ions in water through electrostatic attraction, and it is difficult to simultaneously remove cationic (Ag + ) and anionic heavy metal ions (HCrO 4 - , AuCl 4 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/12B01D69/02B01D67/00B01J20/20B01J20/30C02F1/28C02F1/44C02F101/20C02F101/22
Inventor 徐艺军解修强
Owner FUZHOU UNIV
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