MXene Electrode Immobilized with Nitrous Oxide Reductase
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Solution Overview
Problem
There is a need for new applications of MXene and its derivatives, which have shown promise due to their electrical conductivity and strength similar to graphene, but require innovative uses to fully realize their potential.
Innovation Solution
The immobilization of nitrous oxide reductase (Nos) on MXene or its derivatives, specifically those with a formula of Mn+1XnTs, where M is a transition metal, X is carbon or nitrogen, and T is an oxide or other functional group, to create an electrode for reducing N2O to N2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If MAX phase is transformed into two-dimensional structure by selective removal of aluminum layers, then electrical conductivity and strength are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies the extraction principle by selectively removing aluminum layers from the MAX phase structure through chemical etching processes. This extraction of specific layers transforms the three-dimensional MAX phase into two-dimensional MXene sheets, achieving the desired structural transformation while maintaining the integrity of the remaining Ti-C layers. The selective removal process enables control over the final structure's properties.
Solution Approach 2:
The patent utilizes composite materials by creating MXene-based composite structures with controlled layer compositions. The resulting material combines metallic Ti layers with carbon layers in a two-dimensional configuration, producing a composite structure that exhibits enhanced electrical conductivity and mechanical strength compared to the original MAX phase or pure graphene.
2Use of energy by moving object
If MXene is used for its electrical conductivity and strength, then performance is improved, but application versatility is limited
Solution Approach 1:
The patent applies the universality principle by demonstrating multiple applications of MXene across different fields. The material is utilized not only for its electrical conductivity in electronic devices but also for mechanical reinforcement in composites, energy storage in batteries and supercapacitors, catalysis, and sensing applications. This multi-functionality expands the versatility of MXene beyond single-purpose uses.
Solution Approach 2:
The patent applies local quality by functionalizing specific regions of the MXene structure with different terminations and defects. By controlling the local chemical environment through surface termination with oxygen, hydroxyl, or fluoride groups, the material exhibits spatially varying properties that enable different functional regions within the same MXene structure, enhancing its adaptability to various applications.
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
This approach enables efficient reduction of N2O to N2 using the enzyme-immobilized MXene electrode, demonstrating a novel application of MXene derivatives that leverages their conductivity and strength for catalytic purposes.
Implementation Method 1
nitrous oxide reductase (Nos) is immobilized on the MXene
Implementation Method 2
efficient reduction of N2O to N2 using the enzyme-immobilized MXene electrode
Implementation Method 3
MXene having similar electrical conductivity and strength to those of graphene
Data Source
AI summary
An MXene or a derivative thereof, on which nitrous oxide reductase is immobilized, wherein the MXene has a formula of Mn+1XnTs, wherein M is a transition metal of Groups 3, 4, 5, 6, or a combination thereof, of the Periodic Table of the Elements, X is carbon, nitrogen, or a combination thereof, T is oxide, epoxide, hydroxide, C1-C5 alkoxide, fluoride, chloride, bromide, iodide, or a combination thereof, and n is 1, 2, or 3, and s is 0, 1, or 2.