Preparation method of sulfonated two-dimensional titanium carbide nanosheet

A two-dimensional titanium carbide and nanosheet technology, which is applied in the fields of titanium carbide, chemical instruments and methods, carbon oxides/sulfur carbides, etc., to achieve the effects of low production cost, high dispersion, and simple and controllable preparation process

Inactive Publication Date: 2015-10-07
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation of two-dimensional sulfonated titanium carbide nanosheets has not been reported

Method used

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  • Preparation method of sulfonated two-dimensional titanium carbide nanosheet
  • Preparation method of sulfonated two-dimensional titanium carbide nanosheet
  • Preparation method of sulfonated two-dimensional titanium carbide nanosheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Preparation of sulfonated two-dimensional titanium carbide nanosheets.

[0023] (1) 0.1 g of Ti 3 AlC 2 Soak the powder in 20mL of 50wt% HF aqueous solution at 25°C, and react with magnetic stirring at a speed of 1500r / min for 8 hours to obtain a suspension; filter and wash the obtained suspension repeatedly until the pH value is neutral After centrifugation at 6000 rpm for 10 minutes, a two-dimensional titanium carbide precipitate was obtained;

[0024] (2) Redisperse the above precipitated product in 10ml of water and ultrasonic for 30 minutes, add 10ml of p-aminobenzenesulfonic acid diazonium salt solution dropwise under ice bath conditions, and react for 2h under magnetic stirring. This is the sulfonation process, and the sulfonation Two-dimensional titanium carbide solution;

[0025] (3) The above-mentioned sulfonated two-dimensional titanium carbide solution was separated and precipitated by centrifugation at 4000 rpm for 10 minutes, washed repeatedly...

Embodiment 2

[0026] Example 2 Preparation of sulfonated two-dimensional titanium carbide nanosheets.

[0027] (1) 0.3 g of Ti 3 AlC 2 Soak the powder in 40mL of 40wt% HF aqueous solution at 40°C, and react with magnetic stirring at a speed of 1500r / min for 4 hours to obtain a suspension; filter and wash the obtained suspension repeatedly until the pH value is neutral After centrifugation at 6000 rpm for 10 minutes, a two-dimensional titanium carbide precipitate was obtained;

[0028] (2) Redisperse the above-mentioned precipitated product in 30ml of water, ultrasonicate for 30 minutes, add 20ml of p-aminobenzenesulfonic acid diazonium salt solution dropwise under ice bath conditions, and react for 6h under magnetic stirring. This is the sulfonation process to obtain sulfonate two-dimensional titanium carbide solution;

[0029] (3) The above-mentioned sulfonated two-dimensional titanium carbide solution was separated and precipitated by centrifugation at 4000 rpm for 10 minutes, washed r...

Embodiment 3

[0030] Example 3 Preparation of sulfonated two-dimensional titanium carbide nanosheets.

[0031] (1) 0.2 grams of Ti 3 AlC 2 Soak the powder in 30mL of 40wt% HF aqueous solution at 50°C, and magnetically stir the reaction at a speed of 1500r / min for 2 hours to obtain a suspension; filter and wash the obtained suspension repeatedly until the pH value is neutral After centrifugation at 6000 rpm for 10 minutes, a two-dimensional titanium carbide precipitate was obtained;

[0032] (2) Redisperse the above-mentioned precipitated product in 20ml of water, ultrasonicate for 30 minutes, add dropwise 30ml of p-aminobenzenesulfonic acid diazonium salt solution under ice bath conditions, and react for 3h under magnetic stirring. This is the sulfonation process, and sulfonate two-dimensional titanium carbide solution;

[0033] (3) The above-mentioned sulfonated two-dimensional titanium carbide solution was separated and precipitated by centrifugation at 4000 rpm for 10 minutes, washed re...

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Abstract

The invention discloses a preparation method of a sulfonated two-dimensional titanium carbide nanosheet. The preparation method comprises the following steps of preparing two-dimensional titanium carbide by utilizing aluminum atomic layers in hydrofluoric acid chemical stripping layer-shaped titanium aluminum carbide; preparing aminobenzenesulfonic acid diazonium salt; performing sulfonation reaction of the two-dimensional titanium carbide and the aminobenzenesulfonic acid diazonium salt, so as to prepare the sulfonated two-dimensional titanium carbide nanosheet. The sulfonated two-dimensional titanium carbide nano material prepared by adopting the preparation method has good dispersibility in water and common organic solvents, and the single-layer or few-layer sulfonated two-dimensional titanium carbide nanosheet with large size and high quality can be obtained after ultrasonic treatment is performed on dispersion liquid. The preparation method has the characteristics of low production cost, easiness in obtaining raw materials, simplicity and controllability in a preparation process and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and relates to a method for functionalizing two-dimensional materials, in particular to a method for preparing sulfonated two-dimensional titanium carbide nanosheets. Background technique [0002] MXene is a new type of two-dimensional transition metal carbide or carbonitride with the chemical formula M n+1 x n , M represents an early transition metal, X represents carbon or nitrogen, n=1, 2, 3. This two-dimensional material is obtained by exfoliating the A atomic layer from a class of ternary layered compound MAX phase, and is named MXene because it has a two-dimensional structure similar to graphene (Granphene). Since 2011, Barsoum et al. of Drexel University in the United States first used hydrofluoric acid to form a typical ternary layered carbide Ti 3 AlC 2 Since the Al atomic layer was chemically stripped out to obtain a new type of two-dimensional sheet-like ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B32/907C01B32/921C01P2002/82C01P2004/03C01P2004/04C01P2004/24C01B32/90
Inventor 张建峰王红兵吴玉萍张欣
Owner HOHAI UNIV
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