Preparation method of two-dimensional titanium carbide adsorbing material

A two-dimensional titanium carbide and adsorption material technology, applied in chemical instruments and methods, adsorption water/sewage treatment, inorganic chemistry, etc., can solve the problem of low graphene production efficiency and recycling rate, inability to provide adsorption sites, and limit the adsorption industry. application and other issues, to achieve the effect of good photocatalysis, low cost and good adsorption performance

Inactive Publication Date: 2017-01-04
SOUTHEAST UNIV
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Problems solved by technology

[0003] Two-dimensional materials such as graphene have attracted extensive attention in the field of adsorption due to their excellent specific surface area, high removal rate, and high adsorption capacity. However, graphene is a single-atom structure material, and the bonding force between atoms is relatively weak. Functional groups cannot provide more effective adsorption sites. At the same time, the production efficiency and recovery rate of graphene are low, and the price is expensive, which seriously limits its application in the adsorption industry.

Method used

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  • Preparation method of two-dimensional titanium carbide adsorbing material
  • Preparation method of two-dimensional titanium carbide adsorbing material

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Experimental program
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Effect test

Embodiment 1

[0021] The etching time is 20 hours, the concentration of hydrofluoric acid is 40wt%, the rotating speed of the stirring rotor is 120 rpm, the solution temperature is 20°C, and the two-dimensional titanium carbide adsorption material obtained by treating with 1mol / L sodium hydroxide solution:

[0022] 1. Etching - 10 grams of 625 mesh Ti 3 AlC 2 The powder was immersed in 240 ml of 40 wt% hydrofluoric acid solution. During the etching process, electromagnetic stirring is always carried out, the rotation speed of the stirring rotor is 120 rpm, and the temperature of the whole stirring process is kept constant at 20°C;

[0023] 2. Washing with clean water and centrifugation—after etching for 20 hours, wash the sample with distilled water until the pH of the centrifuged supernatant is between 5 and 6. The centrifuge speed is 3500 rpm, and the centrifugation time is 5 minutes to obtain a clay-type product;

[0024] 3. Drying—dry the product obtained in step 2 in an oven or oven...

Embodiment 2

[0027] The etching time is 50 hours, the concentration of hydrofluoric acid is 50wt%, the rotating speed of the stirring rotor is 100 rpm, the solution temperature is 20°C, and the two-dimensional titanium carbide adsorption material obtained by treating with 1mol / L potassium hydroxide solution:

[0028] 1. Etching - 3 grams of 625 mesh Ti 3 AlC 2 The powder was immersed in 60 ml of 50 wt% hydrofluoric acid solution. During the etching process, electromagnetic stirring is always carried out, the rotation speed of the stirring rotor is 100 rpm, and the temperature of the whole stirring process is kept constant at 20°C;

[0029] 2. Cleaning with clean water and centrifugation—after etching for 50 hours, wash the samples with distilled water until the pH of the centrifuged supernatant is between 5 and 6. The speed of the centrifuge is 3500 rpm, and the centrifugation time is 5 minutes, and finally a clay-type product is obtained;

[0030] 3. Drying—dry the product obtained in ...

Embodiment 3

[0033]The etching time is 24 hours, the concentration of hydrofluoric acid is 40wt%, the rotating speed of the stirring rotor is 200 rpm, the solution temperature is 30°C, and the two-dimensional titanium carbide adsorption material obtained by treating with 2mol / L lithium hydroxide solution:

[0034] 1. Etching - 3 grams of 300 mesh Ti 3 AlC 2 The powder was immersed in 60 ml of 40 wt% hydrofluoric acid solution. During the etching process, the electromagnetic stirring is always carried out, the rotation speed of the stirring rotor is 200 rpm, and the temperature of the whole stirring process is kept constant at 30°C;

[0035] 2. Washing with clean water and centrifugation—after etching for 24 hours, wash the samples with distilled water until the pH of the centrifuged supernatant is between 5 and 6. The speed of the centrifuge is 3500 rpm, and the centrifugation time is 5 minutes, and finally a clay-type product is obtained;

[0036] 3. Drying—dry the product obtained in ...

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Abstract

The invention relates to a preparation method of a two-dimensional titanium carbide (Ti3AlC2) adsorbing material and belongs to the field of material preparation. Ternary lamellar compound Ti3AlC2 ceramic powder is soaked with a hydrofluoric acid solution to react for a period of time, and therefore a two-dimensional titanium carbide material is prepared; then the material is soaked with an alkaline solution, the materials are heated and stirred, the materials are cleaned, centrifuged and dried, and the alkalized two-dimensional titanium carbide adsorbing material is prepared. The preparation method is easy and convenient to use, and the target material can be rapidly prepared. The prepared two-dimensional titanium carbide adsorbing material is mainly used for removing dye molecules, heavy metal ions and other pollutants in sewage.

Description

technical field [0001] The invention relates to a preparation method of a two-dimensional titanium carbide adsorption material, belonging to the field of material preparation. Background technique [0002] Industrial wastewater contains a variety of toxic organic molecules and carcinogenic heavy metal ions, and its excessive discharge seriously threatens the health of humans and the environment. Due to its low cost and simple operation process, adsorption technology has become an ideal method for removing harmful molecules or ions in sewage. Adsorption is to place materials with large specific surface area and high surface energy in wastewater, so as to adsorb various pollutants to achieve the effect of decolorization and separation of pollutants from wastewater. At present, the main adsorbent abroad is mostly activated carbon, which has a good adsorption and removal effect on various soluble dyes and heavy metal ions in wastewater, but it is difficult to clean after the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30C02F1/28C02F1/30B01J27/22
CPCB01J20/0211C02F1/281C02F1/30B01J20/28014B01J27/22C02F2305/10
Inventor 孙正明郑伟张培根田无边张亚梅王英
Owner SOUTHEAST UNIV
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