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Preparation method of single-layer two-dimensional nano material MXene

A two-dimensional nanomaterial, single-layer technology, applied in the direction of nanotechnology, chemical instruments and methods, niobium compounds, etc., can solve the problems of low yield, complicated synthesis steps, no photocatalytic application, etc., and achieve simplified steps and good morphology , cost reduction effect

Pending Publication Date: 2020-12-29
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the two methods may introduce impurity ions (Cu 2+ 、Na + etc.) or complex synthesis steps, these materials have complex synthesis steps, relatively low yields, and do not involve applications in photocatalysis

Method used

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  • Preparation method of single-layer two-dimensional nano material MXene
  • Preparation method of single-layer two-dimensional nano material MXene
  • Preparation method of single-layer two-dimensional nano material MXene

Examples

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Effect test

Embodiment 1

[0027] Provide a single-layer two-dimensional material Ti 3 C 2 T x The preparation method, concrete steps are as follows:

[0028] (1) Under the argon gas atmosphere, 1gTi 3 AlC 2The powder was added to 40ml HF (49%) solution at a rate of 200mg / min, stirred at 45°C for 24h, centrifuged at 8000rpm for 3min, and centrifuged several times until it was washed to neutrality (pH≈7) to obtain multilayer Ti 3 C 2 T x The solution is dark green;

[0029] (2) the multilayer Ti obtained in step (1) 3 C 2 T x The solution was ultrasonically dispersed in an argon gas atmosphere for 5 hours, and then crushed in a cell crusher for 10 minutes under an argon gas atmosphere. The power of the cell crusher was 200W, and the operating frequency was 0.5Hz. The solution was centrifuged at 3500rpm for 3 minutes to obtain a concentration of 0.4mg / ml monolayer Ti 3 C 2 T x The supernatant was vacuum-dried at 60°C for 10 h to obtain a single layer of Ti 3 C 2 T x powder.

Embodiment 2

[0031] Provide a single-layer two-dimensional material Ti 3 C 2 T x The preparation method, concrete steps are basically the same as Example 1, the difference is that in step (1) Ti 3 AlC 2 The amount is replaced by 2g.

Embodiment 3

[0033] Provide a single-layer two-dimensional material Ti 3 C 2 T x The preparation method, the specific steps are basically the same as in Example 1, except that 60ml of HF (49%) solution is used in step (1).

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Abstract

The invention discloses a preparation method of a single-layer two-dimensional nano material, which comprises the following steps: carrying out ultrasonic dispersion on a multi-layer MXene solution for 5-12h, crushing in a cell crusher for 10-30min, centrifuging to obtain a single-layer MXene-containing supernatant, and carrying out vacuum drying to obtain the single-layer MXene, wherein the ultrasonic treatment and crushing processes are carried out in an inert gas atmosphere or vacuum conditions. According to the method, the multiple layers of MXene are firstly dispersed through ultrasound,then crushing treatment is conducted through a biological crusher, the single-layer MXene with the good morphology can be obtained, the steps are simplified, it can be avoided that a sample is polluted by impurities due to introduction of foreign matter, meanwhile, the cost is reduced, and a foundation is laid for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of MXene preparation, and in particular relates to a preparation method of a single-layer two-dimensional nanomaterial MXene. Background technique [0002] Since MXene was first reported by Yury Gogotsi in the United States in 2011, material research has been on the rise, and in 2019 it reached a new research climax. As a new type of two-dimensional material, MXene has a graphene-like structure. It is obtained by etching the ternary layered metal material MAX. The layer A with low bond energy and high reactivity is etched from the MAX material to obtain It has similar properties to Graphene, so it is named after MXene. Its chemical expression is M n+1 x n TX, M is a pre-transition metal element (such as Sc, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, etc.), X represents carbon or nitrogen, n=1,2.3, Tx is a surface functional group (-OH , -F and -O). More than 20 kinds of MXenes have been reported, including Ti 3 C ...

Claims

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Application Information

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IPC IPC(8): C01G23/00B82Y40/00C01G39/00C01G37/00C01G15/00C01G33/00C01G31/00C01G25/00C01G27/00C01F17/30
CPCC01G23/002C01G23/00C01G39/006C01G39/00B82Y40/00C01G37/006C01G37/00C01G15/006C01G15/00C01G33/006C01G33/00C01G31/006C01G31/00C01G25/006C01G25/00C01G27/006C01G27/00C01F17/30C01P2004/03C01P2004/04C01P2002/72C01P2002/85
Inventor 朱艳超李恩
Owner HUBEI UNIV
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