Recent Advances in Two-Dimensional MXene-Based Electrochemical Biosensors for Sweat Analysis

Area of Science:

• Biomaterials Science
• Nanotechnology
• Analytical Chemistry

Background:

• Sweat analysis offers a non-invasive approach for disease diagnosis and health monitoring due to analyte correlations with blood.
• Low analyte concentrations in sweat necessitate highly sensitive and efficient sensing technologies.
• Electrochemical sensors are crucial for sweat analysis due to their sensitivity, cost-effectiveness, and potential for miniaturization.

Purpose of the Study:

• To review recent advancements in MXene-based bio-electrochemical sensors for sweat analysis.
• To highlight the applications of these sensors in disease diagnosis and point-of-care testing.
• To discuss the challenges and future prospects of MXenes in sweat-sensing technologies.

Main Methods:

• Review of current literature on MXene synthesis and characterization for electrochemical applications.
• Analysis of MXene-based sensor designs, including wearable, implantable, and microfluidic systems.
• Evaluation of MXene properties relevant to bio-electrochemical sensing, such as surface area, conductivity, and biocompatibility.

Main Results:

• MXenes exhibit favorable properties like large surface area, tunable electrical characteristics, and good dispersibility for enhanced sensor performance.
• MXene-based sensors have demonstrated significant potential in detecting various analytes in sweat for diagnostic purposes.
• Progress has been made in integrating MXene sensors into wearable, implantable, and microfluidic devices for real-time monitoring.

Conclusions:

• MXenes are a promising class of materials for developing next-generation bio-electrochemical sensors for sweat analysis.
• Further research is needed to address challenges related to MXene stability, long-term performance, and clinical validation.
• MXene-based sweat sensors hold great potential for non-invasive disease diagnosis and personalized health management.