Highly Sensitive Surface Plasmon Resonance Sensor Modified With 2D Ti2C MXene for Solution Detection
Highly Sensitive Surface Plasmon Resonance Sensor Modified With 2D Ti2C MXene for Solution Detection
复制标题
采用 2D TiâC MXene 改性的高灵敏度表面等离子共振传感器，用于溶液检测
DOI：
10.1109/jsen.2020.3015574
复制
发表时间：
2021-01-01
影响因子：
4.3
通讯作者：
Dai, Xiaoyu
中科院分区：
文献类型：
--
作者：
Gan, Shuaiwen;Ruan, Banxian;Dai, Xiaoyu
二维Ti 2C MXene由于其具有高活性的二维表面而在生物技术和生物传感领域有着巨大的应用前景，本文利用二维Ti 2C纳米片修饰MXene，制备了一种高灵敏度的表面等离子体共振（SPR）传感器。实验结果表明，SPR传感器的性能与二维Ti 2C纳米片的厚度密切相关，所设计的SPR传感器的波长灵敏度为3579.6 nm/RIU，比无Ti 2C覆盖层的SPR传感器提高了79%。此外，Ti_2C涂层SPR传感器对低浓度的重金属离子也有较好的检测能力，Pb ~（2+）、Cr ~（2+）和Hg ~（2+）的最大浓度灵敏度分别为3.788nm/μ g/L、5.308nm/μ g/L和3.233nm/μ g/L，相应的检测限分别为79.2ng/L、56.5ng/L和92.8ng/L，低于国际医疗标准。研究结果为实现高灵敏度生物传感器和环境污染检测奠定了基础。
Two-dimensional (2D) Ti2C MXene has great prospects in many fields of biotechnology and biosensing owning to their highly active 2D surfaces, in this work, we demonstrate a high sensitivity surface plasmon resonance (SPR) sensormodified by the 2D Ti2C nanosheetsoverlayer. Our experimental results showthat the performances of the SPR sensor are closely related to the thickness of 2D Ti2C nanosheets, and the proposed design gives the wavelength sensitivity of 3579.6 nm/RIU, which are 79% higher than the SPR sensor without Ti2C overlayer. In addition, the Ti2C covered SPR sensor is capable of detecting low concentrations of heavy metal ions, our results show that the maximum concentrate sensitivities are 3.788 nm/mu g/L, 5.308 nm/mu g/L and 3.233 nm/mu g/L for Pb2+, Cr2+ and Hg2+ ions, and the corresponding detection limits are 79.2 ng/L, 56.5 ng/L and 92.8 ng/L, which are lower than the international medical standards. Our results pave the way to realize high sensitivity biosensor and environmental pollution detection.