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Preparation method of Ti3C2 MXene nano sheet material

A nanosheet and intercalation technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of harsh and complex operating conditions, uneconomical, increasing the thickness of the sheet, and achieve the operating conditions. Simple, large specific surface area, high-quality specific capacity effect

Active Publication Date: 2020-05-15
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite a nearly 4-fold increase in capacity, DMSO still occupies the multilayer Ti after extensive water rinsing 3 C 2 MXene surface, which sticks the sheets together and increases the sheet thickness
In addition, Hongbing Wang et al. in "Surface modified MXene Ti 3 C 2 multilayers by aryl diazonium salts leading tolarge-scale delamination” uses aryl diazonium salt surface modification method to layer multilayer MXene, the method first needs to carry out Na + Intercalation, followed by surface modification with sulfamate diazonium salt, resulting in large-scale delamination after ultrasonication, but the experimental operating conditions are harsh and complex, uneconomical

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0026] The invention provides a Ti 3 C 2 The preparation method of MXene nano sheet material, comprises the following steps:

[0027] Step 1. Add titanium-aluminum carbon powder, hydrofluoric acid solution and hexadecyltrimethylammonium bromide into the corrosion-resistant container according to the mass ratio of 1.0-2.0:7.0-9.0:1. Stir for 6-60 hours to obtain CTAB intercalated Ti 3 C 2 mixed solution;

[0028] Step 2. Intercalation of CTAB into Ti 3 C 2 The mixed solution was centrifuged, washed with water until the supernatant was neutral, and the precipitate was collected by filtration to obtain CTAB intercalated Ti 3 C 2 multilayer material;

[0029] Step 3: Intercalation of Ti into CTAB 3 C 2 Add water to the multi-layer material, sonicate for 30-120 minutes, and freeze-dry to obtain CTAB intercalated Ti 3 C 2 Nanosheet powder material.

[0030] Ti in the titanium-aluminum carbon powder described in step 1 3 AlC 2 >95wt.%, the particle size is 200-400 mes...

Embodiment 1

[0038] Ti 3 C 2 The preparation method of MXene nano sheet material, comprises the following steps:

[0039] Step 1. Add titanium-aluminum carbon powder, hydrofluoric acid solution, and cetyltrimethylammonium bromide into a corrosion-resistant container at a mass ratio of 1:7:1, and stir at 20°C for 60 hours to obtain CTAB Intercalated Ti 3 C 2 mixed solution;

[0040] Step 2. Intercalation of CTAB into Ti 3 C 2 The mixed solution was centrifuged, washed with water until the supernatant was neutral, and the precipitate was collected by filtration to obtain CTAB intercalated Ti 3 C 2 multilayer material;

[0041] Step 3: Intercalation of Ti into CTAB 3 C 2 Add water to the multilayer material, sonicate for 30 minutes, freeze-dry at -30°C for 12 hours, and obtain CTAB intercalated Ti 3 C 2 Nanosheet powder material.

[0042] The Ti prepared in this embodiment 3 C 2 The MXene nanosheet material has been tested: the layer spacing is 1.00nm; the specific surface ar...

Embodiment 2

[0044] Ti 3 C 2 The preparation method of MXene nano sheet material, comprises the following steps:

[0045] Step 1. Add titanium-aluminum carbon powder, hydrofluoric acid solution, and cetyltrimethylammonium bromide into a corrosion-resistant container at a mass ratio of 1.5:8:1, and stir at 40°C for 35 hours to obtain CTAB Intercalated Ti 3 C 2 mixed solution;

[0046] Step 2. Intercalation of CTAB into Ti 3 C 2 The mixed solution was centrifuged, washed with water until the supernatant was neutral, and the precipitate was collected by filtration to obtain CTAB intercalated Ti 3 C 2 multilayer material;

[0047] Step 3: Intercalation of Ti into CTAB 3 C 2 Add water to the multilayer material, sonicate for 60 minutes, and freeze-dry at -50°C for 28 hours to obtain CTAB intercalated Ti 3 C 2 Nanosheet powder material.

[0048] The Ti prepared in this embodiment 3 C 2 The MXene nanosheet material has been tested: the layer spacing is 1.30nm; the specific surfac...

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Abstract

The invention discloses a preparation method of a Ti3C2MXene nano sheet material. The preparation method comprises the following steps: step one, adding titanium-aluminum-carbon powder, a hydrofluoricacid solution and hexadecyl trimethyl ammonium bromide into a corrosion-resistant container, and stirring at 20-60 DEG C for 6-60 hours to obtain a CTAB (cetyl trimethyl ammonium bromide) intercalated Ti3C2 mixed solution; step two, carrying out a centrifugal treatment on the CTAB intercalation Ti3C2 mixed solution, washing with water until the supernate is neutral, filtering, and saving the precipitate namely a CTAB intercalation Ti3C2 multilayer material; and step three, adding water into the CTAB intercalated Ti3C2 multilayer material, carrying out an ultrasonic treatment for 30-120 minutes, and carrying out freeze-drying to obtain a CTAB intercalated Ti3C2 nano sheet powder material. The invention further discloses a Ti3C2MXene nano sheet material. The method has the beneficial effects of simple operation conditions, economy and high efficiency.

Description

technical field [0001] The invention relates to the field of nanomaterials. More specifically, the present invention relates to a Ti 3 C 2 Preparation method of MXene nano sheet material. Background technique [0002] Two-dimensional materials have attracted much attention due to their unique structures and excellent properties. Transition metal carbides and / or carbonitrides, first prepared by Naguib et al. in 2011, expanded the range of 2D materials. Because of its graphene-like 2D structure, it is called MXene, and its chemical formula is M n+1 x n T x (n=1,2,3), where M is an early transition metal element, X is carbon or nitrogen, and T is an active functional group linked to the surface such as -F, -OH. The first-principle calculation of the structure and performance of MXene shows that it has a unique two-dimensional layered structure, large specific surface area, good electrical conductivity, and excellent mechanical properties. It is used in composite materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921H01M4/587H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01P2004/20C01P2004/64C01P2006/12C01P2006/40C01B32/921H01M4/587H01M10/0525Y02E60/10
Inventor 余俊胡爱玲赵惠忠张寒
Owner WUHAN UNIV OF SCI & TECH
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