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Updated: Dec 5, 2025

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2D titanium carbide MXenes as emerging optical biosensing platforms.

Xiaohua Zhu1, Youyu Zhang1, Meiling Liu1

  • 1Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China.

Biosensors & Bioelectronics
|October 20, 2020
PubMed
Summary

Titanium carbide (Ti3C2) MXenes, a 2D material, show promise for optical biosensors. This review covers their synthesis, functionalization, and applications in advanced diagnostic tools.

Keywords:
MXenesNanosheetsOptical sensorsQuantum dotsTitanium carbide (Ti(3)C(2))

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Two-dimensional (2D) materials like MXenes are emerging for biosensing.
  • Titanium carbide (Ti3C2) MXenes are particularly promising for diagnostic and biological research.
  • Optical biosensing applications of MXenes are less developed than electrochemical ones.

Purpose of the Study:

  • To review the synthesis and functionalization of Ti3C2 MXenes (nanosheets and quantum dots).
  • To highlight the properties and applications of Ti3C2 MXenes in various optical biosensing platforms.
  • To outline challenges and future trends for Ti3C2 MXenes in optical biosensing.

Main Methods:

  • Review of synthesis and functionalization techniques for Ti3C2 MXenes.
  • Analysis of optical properties including photoluminescence, ECL, SPR, SERS, PEC, colorimetric, and photothermal effects.
  • Literature survey on current applications in optical biosensing.

Main Results:

  • Ti3C2 MXenes, in nanosheet and quantum dot forms, can be synthesized and functionalized.
  • These MXenes exhibit unique optical properties suitable for diverse biosensing modalities.
  • Various optical biosensing platforms utilizing Ti3C2 MXenes have been developed.

Conclusions:

  • Ti3C2 MXenes offer significant potential for advancing optical biosensing technologies.
  • Further research is needed to overcome current challenges in their application.
  • Future trends point towards enhanced sensitivity, specificity, and integration into point-of-care devices.