Two-dimensional MXene modified AgNRs as a surface-enhanced Raman scattering substrate for sensitive determination of polychlorinated biphenyls

Abstract

The ultrathin two-dimensional MXene nanosheets were decorated on the surface of silver nanorods (AgNRs) through a facile modification strategy to prepare highly sensitive and reproducible SERS substrates (AgNR/MXene substrate). The...

Plasmon Coupling and Efficient Charge Transfer in Rough-Surfaced Au Nanotriangles/MXene Hybrids as an Ultrasensitive Surface-Enhanced Raman Scattering Platform

“…At the concentration of 10 –12 M, the AEF is calculated to be 3.6 × 10 9 (at 1174 cm –1 ). Noticeably, the MXene/Au NT (100) hybrids show a lower detection limit than other MXene/metal SERS platforms reported in previous works. − Figure d displays a good linear relationship between the peak intensity and logarithm of the concentration with a linear correlation coefficient ( R 2 ) of 0.94596. These results reveal that the MXene/Au NT (100) hybrids are promising SERS substrates.…”

“…Due to the strong plasmon coupling between the in-plane resonance of Au NTs and transversal plasmon resonance of Ti 3 C 2 T x MXene around 785 nm, the SERS performances of MXene/modified Au NTs were largely improved. At 785 nm excitation, the limitation of detection is down to 10 –12 M, which is much lower than the previously reported MXene/metal hybrids. − Subsequently, the enhanced mechanism behind the improved SERS is discussed by the simulation and experimental results.…”

A wearable screen-printed SERS array sensor on fire-retardant fibre gloves for on-site environmental emergency monitoring

“…Additionally, the ideal SERS properties. 33 The long-term stability of the wearable sensor was investigated during 9 weeks at room temperature. The SERS spectra of R6G and the intensity distribution of the characteristic peak were recorded every week (Fig.…”

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti3C2 Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

“…The rich chemical properties, unique morphology of MXene, and good electronic conductivity make it an ideal choice for many applications, − including catalysts . Most recently, although MXene materials are of high cost and unstable under ambient conditions, their potential as an SERS substrate has also attracted much attention due to the chemical enhancement and adsorption ability. − …”