Method for intercalating and stripping two-dimensional crystal titanium carbide nano material by using ammonia water

A technology of two-dimensional crystals and nanomaterials, applied in nanotechnology and other directions, can solve the problems of high harm of organic matter and low intercalation efficiency, and achieve the effects of low cost, high intercalation efficiency and increased specific surface area.

Inactive Publication Date: 2016-12-07
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organic matter used in this method is more harmful to humans, and the intercalation efficiency is low, and the intercalation time often needs more than 18h

Method used

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  • Method for intercalating and stripping two-dimensional crystal titanium carbide nano material by using ammonia water
  • Method for intercalating and stripping two-dimensional crystal titanium carbide nano material by using ammonia water
  • Method for intercalating and stripping two-dimensional crystal titanium carbide nano material by using ammonia water

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Experimental program
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Effect test

Embodiment 1

[0033] TiH 2 , TiC, and Al powders were weighed at a molar ratio of 1:2:1.1, and ball milled for 12 hours to make them evenly mixed. Using a vacuum tube furnace, using high-purity argon as a protective gas, sintering at 1400 ° C for 2 hours to prepare high-purity Ti 3 AlC 2 The bulk material is finally ground into a 325 mesh powder. Ti obtained by grinding 8g 3 AlC 2 For powder, add 320ml of HF with a concentration of 49%, react at 60°C for 24h, wash the reaction product with deionized water and absolute ethanol until the pH of the supernatant is nearly neutral, and dry it in vacuum at 80°C to obtain the original two-dimensional crystal Titanium carbide nanomaterial Ti 3 C 2 T x .

[0034] Weigh 5g of prepared Ti 3 C 2 T x Add 100ml of ammonia water with a mass fraction of 25% to 28%, and use a high-speed shearing machine at a speed of 6000 revolutions per minute to treat Ti 3 C 2 Tx was intercalated and exfoliated for 2 hours to obtain a two-dimensional crystal t...

Embodiment 2

[0036] TiH 2 , TiC, and Al powders were weighed at a molar ratio of 1:2:1.1, and ball milled for 12 hours to make them evenly mixed. Using a vacuum tube furnace, using high-purity argon as a protective gas, sintering at 1400 ° C for 2 hours to prepare high-purity Ti 3 AlC 2 The bulk material is finally ground into a 325 mesh powder. Ti obtained by grinding 8g 3 AlC 2 Powder, add 320ml of HF with a concentration of 49%, react at 60°C for 24h, wash the reaction product with deionized water and absolute ethanol until the pH of the supernatant is nearly neutral, and dry it in vacuum at 80°C to obtain the original two-dimensional Crystalline Titanium Carbide Nanomaterial Ti 3 C 2 T x .

[0037] Weigh 5g of prepared Ti 3 C 2 T x Add 100ml of ammonia water with a mass fraction of 25% to 28%, and use a high-speed shearing machine at a speed of 6000 revolutions per minute to treat Ti 3 C 2 Tx was intercalated and exfoliated for 10 hours to obtain a two-dimensional crystal ...

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Abstract

The invention relates to a method for intercalating and stripping a two-dimensional crystal titanium carbide nano material by using ammonia water. The method comprises the following steps: putting a two-dimensional crystal titanium carbide material into ammonia water, performing intercalation and stripping by using a high-speed shearing machine, and performing washing and vacuum drying, thereby obtaining the two-dimensional crystal titanium carbide nano material of which the interlayer spacing is increased. The two-dimensional crystal titanium carbide nano material provided by the invention is relatively large in interlayer spacing, the aggregation effect of titanium carbide can be overcome to a certain extent, the specific surface area of the two-dimensional crystal titanium carbide nano material can be increased, and the properties of the material in fields of supercapacitors, lithium ion batteries, adsorption and the like can be improved.

Description

technical field [0001] The invention belongs to the field of preparation of two-dimensional crystal MXene nanomaterials, and in particular relates to a preparation method for preparing two-dimensional crystal titanium carbide nanomaterials with large layer spacing by using ammonia water intercalation and exfoliation. Background technique [0002] MXene material is a new type of two-dimensional transition metal carbide or carbonitride, which has a graphene-like structure. Currently, it is mainly obtained by etching ternary layered compound MAX phase ceramics with HF acid. Its chemical formula is M n+1 x n T x , wherein M represents a transition metal element, X represents carbon or nitrogen, Tx is -OH / =O, -F, n=1, 2, 3. MXene has good conductivity, hydrophilicity, light transmission, and magnetism, and can be used in supercapacitors, lithium-ion batteries, hydrogen storage, sensors and other fields. [0003] However, due to the inevitable agglomeration effect between MXene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/30B82Y40/00
CPCC01P2002/72C01P2002/78C01P2004/03
Inventor 于云冯爱虎王勇江峰史智慧于洋米乐曹韫真宋力昕
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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