Yang Zhi, Guo Shuang, Park Eungyeong, Sun Yantao, Liu Yucun, Chen Lei, Jung Young Mee
College of Chemistry, Jilin Normal University, Siping, Jilin 136000, China.
Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, South Korea.
Spectrochim Acta A Mol Biomol Spectrosc. 2024 Aug 5;316:124382. doi: 10.1016/j.saa.2024.124382. Epub 2024 Apr 29.
MXene sheets with the unique electrical and optical properties show the excellent potential for surface-enhanced Raman spectroscopy (SERS) applications. In this study, we chose TiCT, a type of MXene, to decorate silver nanoparticles (Ag NPs) on the ultrathin two-dimensional (2D) MXene sheets. The designed Ag-MXene substrates with SERS activity showed high sensitivity, high stability, and reproducibility. The SERS signal was enhanced by the synergistic contribution of both charge-transfer (CT) and surface plasmon resonance (SPR) involving the Ag NPs and the MXene sheets. Due to the strong interaction between the probe molecules and Ag NPs which provided the nanoscale gap, the substrate exhibited remarkable SERS performance. A novel experimental strategy was developed to facilitate the controlled synthesis of noble metal NPs and MXene sheets and provide insights for further improving the practical applications of these materials in SERS detection.
具有独特电学和光学性质的MXene薄片在表面增强拉曼光谱（SERS）应用中显示出优异的潜力。在本研究中，我们选择了一种MXene——TiCT，用于在超薄二维（2D）MXene薄片上修饰银纳米颗粒（Ag NPs）。设计的具有SERS活性的Ag-MXene基底表现出高灵敏度、高稳定性和可重复性。SERS信号通过涉及Ag NPs和MXene薄片的电荷转移（CT）和表面等离子体共振（SPR）的协同作用而增强。由于探针分子与提供纳米级间隙的Ag NPs之间的强相互作用，该基底表现出卓越的SERS性能。开发了一种新颖的实验策略，以促进贵金属NPs和MXene薄片的可控合成，并为进一步改善这些材料在SERS检测中的实际应用提供见解。
