Composite nanostructure based on three-dimensional porous transition metal carbide Ti3C2MXene and general preparation method thereof

A composite nanostructure and three-dimensional porous technology, applied in the field of nanomaterials, can solve problems such as limiting the efficient application of surfaces and interfaces, limiting the uniform growth and compounding of inorganic nanometers, and achieving excellent structural stability, easy large-scale production, and uniform dispersion.

Inactive Publication Date: 2019-12-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a two-dimensional nanomaterial, MXene itself is irreversibly stacked due to van der Waals force, which greatly limits the uniform growth and recombination of inorganic nanoparticles on its surface interface, and limits the efficient application of its surface interface.

Method used

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  • Composite nanostructure based on three-dimensional porous transition metal carbide Ti3C2MXene and general preparation method thereof
  • Composite nanostructure based on three-dimensional porous transition metal carbide Ti3C2MXene and general preparation method thereof
  • Composite nanostructure based on three-dimensional porous transition metal carbide Ti3C2MXene and general preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Three-dimensional porous Ti loaded with cobalt sulfide nanoparticles 3 C 2 The preparation method of MXene (Scheme 1)

[0033] 1) Mix 5mL20mgmL -1 Ti 3 C 2 MXene and 50 mg of cobalt-containing metal-organic framework compound ZIF-67 were dispersed in 100 mL of ethanol, and ultrasonically dispersed for 10 min to prepare a precursor solution.

[0034] 2) Using an ultrasonic atomizer to atomize the precursor solution obtained in step 1) into aerosol droplets with a size of about several microns. With Ar gas as the carrier gas, the aerosol micro-droplets were blown into a tube furnace with a preset temperature of 300 °C to make them dry quickly, and three-dimensional Ti 3 C 2 MXene coated ZIF-67 nanoparticles. The product particles obtained had an average size of about 3.5 μm.

[0035] 3) Under hydrogen sulfide gas and argon atmosphere, the three-dimensional Ti obtained in step 2) 3 C 2 MXene-coated ZIF-67 nanoparticles were calcined in a high-temperat...

Embodiment 2

[0036] Example 2 Three-dimensional porous Ti loaded with cobalt phosphide nanoparticles 3 C 2 The preparation method of MXene (Scheme 1)

[0037] 1) Dilute 5mL10mgmL -1 Ti 3 C 2 MXene and 500 mg cobalt-containing metal-organic framework compound ZIF-67 were dispersed in 50 mL ethanol, and ultrasonically dispersed for 60 min to prepare a precursor solution.

[0038] 2) Using an ultrasonic atomizer to atomize the precursor solution described in step 1) into aerosol micro-droplets with a size of several microns. With Ar gas as the carrier gas, the aerosol micro-droplets were blown into a tube furnace with a preset temperature of 400 °C to make them dry quickly, and three-dimensional Ti 3 C 2 MXene coated ZIF-67 nanoparticles. The product particles obtained had an average size of about 3.5 μm.

[0039] 3) Under the protection of phosphine gas and nitrogen gas, the three-dimensional Ti obtained in step 2) 3 C 2 MXene-coated ZIF-67 nanoparticles were calcined in a high-...

Embodiment 3

[0040] The preparation method of the three-dimensional porous MXene of embodiment 3 load cobalt hydroxide nanosheets (scheme two)

[0041] 1) Dilute 100mL0.5mgmL -1 Ti 3 C 2 MXene and 5000 mg cobalt-containing metal-organic framework compound ZIF-67 were dispersed in 50 mL ethanol, and ultrasonically dispersed for 60 min to prepare a precursor solution.

[0042] 2) Using an ultrasonic atomizer to atomize the precursor solution described in 1) into aerosol micro-droplets with a size of several microns. With Ar gas as the carrier gas, the aerosol micro-droplets were blown into a tube furnace with a preset temperature of 300 °C to make them dry quickly, and three-dimensional Ti 3 C 2 MXene coated ZIF-67 nanoparticles. The product particles obtained had an average size of about 3.5 μm.

[0043] 3) the three-dimensional Ti obtained in step 2) 3 C 2 MXene-coated ZIF-67 nanoparticles were placed in the corresponding ethanol solution of cobalt chloride (20 mg mL -1 , 20mL)...

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Abstract

The invention discloses a composite nanostructure based on a three-dimensional porous transition metal carbide Ti3C2MXene and a general preparation method thereof, and belongs to the field of nanomaterials. The three-dimensional composite structure is composed of a three-dimensional porous Mxene-supported inorganic nanostructure, and has a honeycomb hierarchical porous structure. A precursor of atwo-dimensional transition metal carbide and a metal-organic framework compound is subjected to high-temperature pyrolysis or a chemical reaction in an inert or reactive atmosphere to prepare the composite nanostructure with a controllable size. According to the composite nanostructure, stacking of MXene itself is inhibited, an active surface area, porosity, and ion permeability of MXene are increased, and thereby a surface interface of MXene is efficiently used. At the same time, introduction of the metal-organic framework compound realizes uniform and stable compounding of the three-dimensional porous MXene and an inorganic nanomaterial, the fundamental difficult problem that plagues exerting and application of inorganic nanomaterial performance is solved, and the composite nanostructurehas wide application prospects in the fields such as catalysis, energy, photo-electricity, space technology, and military industry.

Description

technical field [0001] The invention belongs to the field of nanomaterials, and relates to a three-dimensional porous transition metal carbide Ti 3 C 2 MXene composite nanostructures and their general preparation methods. Background technique [0002] Due to the unique size effect, nanomaterials have far superior physical and chemical properties than macroscopic materials, making them attract extensive attention in many fields. The excellent physical and chemical properties of functional nanomaterials are mainly derived from their nanocomposition, crystal phase structure, and size effect. Fine regulation of their microstructure to achieve controllable design of composition structures at the nanoscale has become a hot spot in the scientific research of nanomaterials in recent years. [0003] On the one hand, nanomaterials bring excellent physical and chemical properties due to the size effect. On the other hand, after nanomaterials are nanosized, due to the extremely high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08C01B32/921C01G53/04C01G53/11
CPCC01B25/08C01G53/04C01G53/11C01P2004/03C01P2004/04C01P2004/61C01P2004/80C01B32/921
Inventor 王治宇修陆洋邱介山
Owner DALIAN UNIV OF TECH
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