Substrate types and applications of MXene for surface-enhanced Raman spectroscopy

Abstract

Surface-enhanced Raman spectroscopy (SERS) has been widely used in the analysis of analytes because of its unique fingerprint characteristics, high sensitivity, and fast detection response. MXene is widely used in SERS studies among the various substrates due to its ultra-high chemical stability, excellent conductivity, hydrophilicity, and low fabrication cost. This mini-review summarizes MXene’s research in the SERS field from two aspects. We reviewed MXene materials used as SERS substrates alone and combined with noble metal particles primarily. Subsequently, we outlined representative applications of MXene-based SERS in biomedicine, food safety, and environmental monitoring. Moreover, we discussed the technical bottleneck and the prospect of future development in this field.

MXene-Based Skin-Like Hydrogel Sensor and Machine Learning-Assisted Handwriting Recognition

“…As a two-dimensional inorganic material composed of transition metal carbides and nitrides, MXene has a unique structure and compelling properties such as excellent conductivity, high surface area, tunable surface functional groups, and outstanding hydrophilicity. , Furthermore, MXene has chemical stability, − which makes it an ideal conductive material, and is widely used by researchers in flexible sensors, , supercapacitors, catalysts, , and electromagnetic interference. , However, MXene hydrogel exhibits a low elongation at break, which leads to easy damage during stretching. Additionally, its elastic modulus is not compatible with human tissues, limiting its practical applications in flexible sensors.…”