MXenes@MOFs Hybrid Heterointerfaces for Electrochemical Sensing: Interface Engineering, Progress, Challenges and...

Area of Science:

• Materials Science
• Nanotechnology
• Electrochemistry

Background:

• MXenes offer high conductivity and surface chemistry for sensing.
• Metal-Organic Frameworks (MOFs) provide large surface areas and tunable pores but lack conductivity.
• Integrating MXenes and MOFs creates hybrid materials addressing conductivity-porosity trade-offs.

Purpose of the Study:

• To review engineering methods for MXene@MOF hybrids.
• To highlight interface engineering for enhanced sensing properties.
• To summarize applications in environmental and health monitoring.

Main Methods:

• In-situ, ex-situ, and derivative synthesis strategies for MXene@MOFs.
• Focus on interface bonding, MOF distribution in MXene interlayers, and heterojunction formation.
• Analysis of heterointerface sensing mechanisms.

Main Results:

• MXene@MOFs exhibit synergized properties, resolving conductivity-porosity limitations.
• Demonstrated applications in detecting antibiotics, heavy metals, pesticides, and health biomarkers (cancer, glucose, CVD).
• Hybrid materials show superior stability and lower impedance compared to commercial electrodes.

Conclusions:

• MXene@MOF hybrids represent a promising platform for electrochemical sensing.
• Interface engineering is crucial for optimizing sensing performance.
• Further research is needed for commercialization and addressing challenges.