Photoinduced Charge Transfer Empowers TaC and NbC MXenes with High SERS Performance.

Langmuir

Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing 211189, China.

Published: October 2024


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Article Abstract

This study introduces two-dimensional (2D) TaC and NbC MXenes as outstanding materials for surface-enhanced Raman scattering (SERS) sensing, marking a significant departure from traditional noble-metal substrates. These MXenes exhibit exceptional SERS capabilities, achieving enhancement factors around 10 and detection limits as low as 10 M for various analytes, including environmental pollutants and drugs. The core of their SERS functionality is attributed to the robust interfacial photoinduced charge-transfer interactions between the MXenes and the adsorbed molecules. This deep insight not only advances our understanding of MXene materials in SERS applications but also opens new avenues for developing highly sensitive and selective SERS sensors. The potential of TaC and NbC MXenes to revolutionize SERS technology underscores their importance in environmental monitoring, food safety, and beyond.

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http://dx.doi.org/10.1021/acs.langmuir.4c02165DOI Listing

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