Metal Alkoxide-Modified MXene for Conductive Non-Polar Dispersions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing MXenes are challenging to disperse stably in both polar and non-polar organic solvents while maintaining high electrical conductivity, limiting their application in various industries.
Innovation Solution
Surface-modify MXene with a metal alkoxide, covalently bonding it to the MXene surface as a ligand, to enhance dispersibility in both polar and non-polar solvents and increase electrical conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MXene is dispersed in polar organic solvents, then electrical conductivity is high (several tens to several thousands of S/cm), but dispersibility in non-polar organic solvents is poor
Solution Approach 1:
The patent modifies the surface properties of MXene by changing the chemical parameters of the surface groups from hydrophilic (hydroxyl and oxidation groups) to hydrophobic (alkyl or aryl groups). This parameter change enables MXene to be dispersed in non-polar organic solvents while maintaining high electrical conductivity, resolving the contradiction between conductivity and dispersibility in non-polar solvents.
Solution Approach 2:
The patent creates a composite structure by covalently bonding hydrophobic groups to the MXene surface, forming a surface-modified MXene composite. This composite material combines the high conductivity of MXene with the hydrophobicity of the modified surface groups, enabling stable dispersion in non-polar solvents while preserving electrical conductivity.
2Adaptability or versatility
If MXene is surface-modified with hydrophobic groups, then dispersibility in non-polar solvents is improved, but electrical conductivity may be reduced
Solution Approach 1:
The patent applies local quality modification by introducing hydrophobic groups only at the surface of MXene while preserving the intrinsic conductive properties of the MXene bulk structure. The surface modification provides hydrophobicity for non-polar solvent dispersibility without affecting the electrical conductivity pathway within the MXene layers.
Solution Approach 2:
The patent uses covalent bonding as an intermediary mechanism to attach hydrophobic groups to the MXene surface. This strong covalent connection ensures that the hydrophobic modification is stable and does not interfere with the electrical conductivity of MXene, while effectively providing hydrophobicity for non-polar solvent compatibility.
3Shape
If strong acid etching is used to convert MAX phase to 2D MXene, then 2D structure is achieved, but hydrophilic functional groups remain on the surface
Solution Approach 1:
The patent extracts and removes the hydrophilic functional groups (hydroxyl and oxidation groups) from the MXene surface through chemical modification. By replacing these hydrophilic groups with hydrophobic alkyl or aryl groups, the surface chemistry is fundamentally changed to be compatible with non-polar solvents while maintaining the 2D structure.
Solution Approach 2:
Instead of trying to maintain the hydrophilic surface groups from the etching process, the patent inverts the approach by actively introducing hydrophobic groups to override the hydrophilicity. This inversion of surface chemistry enables dispersion in non-polar solvents despite the 2D structure created by acid etching.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The surface-modified MXene achieves stable dispersion and higher electrical conductivity in non-polar solvents, enabling broader industrial applications, including conductive films and polymer composites for electromagnetic wave shielding.
Implementation Method 1
the alkoxide is covalently bonded to the surface of the MXene and is present as a ligand
Implementation Method 2
surface-modified with a metal alkoxide, which is formed by surface-modifying a MXene
Implementation Method 3
the alkoxide is covalently bonded to the surface of the MXene and is present as a ligand
Data Source
AI summary
The present invention discloses a MXene surface-modified with a metal alkoxide, which is formed by surface-modifying a MXene represented by the following Chemical Formula 1 with a metal alkoxide, in which the metal alkoxide is covalently bonded to the surface of the MXene and is present as a ligand.Mn+1 Xn [Chemical Formula 1]Here, M is one or more transition metal elements selected from the group consisting of Sc, Ti, V, Cr, Mn, Y, Zr, Nb, Mo, Hf, and Ta, X is at least one of carbon and nitrogen, and n is an integer from 1 to 4.