高质量硫化钽纳米片表面等离子体共振生物传感器提高了灵敏度及汞检测的实验演示
High Quality TaS Nanosheet SPR Biosensors Improved Sensitivity and the Experimental Demonstration for the Detection of Hg.
作者信息
Jia Yue, Liao Yunlong, Cai Houzhi
机构信息
International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology of Ministry of Education, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
出版信息
Nanomaterials (Basel). 2022 Jun 16;12(12):2075. doi: 10.3390/nano12122075.
TaS as transition metal dichalcogenide (TMD) two-dimensional (2D) material has sufficient unstructured bonds and large inter-layer spacing, which highly supports transporting and absorbing mercury ions. The structural characterizations and simulation data show that an SPR sensor with high sensitivity can be obtained with a TaS material-modified sensitive layer. In this paper, the role of TaS nanoparticles in an SPR sensor was explored by simulation and experiment, and the TaS layer in an SPR sensor was characterized by SEM, elemental mapping, XPS, and other methods. The application range of structured TaS nanoparticles is explored, these TaS based sensors were applied to detect Hg ions at a detection limit approaching 1 pM, and an innovative idea for designing highly sensitive detection techniques is provided.
TaS作为过渡金属二硫化物（TMD）二维（2D）材料，具有足够的非结构化键和较大的层间距，这极大地有利于汞离子的传输和吸收。结构表征和模拟数据表明，用TaS材料修饰敏感层可获得高灵敏度的表面等离子体共振（SPR）传感器。本文通过模拟和实验探究了TaS纳米颗粒在SPR传感器中的作用，并用扫描电子显微镜（SEM）、元素映射、X射线光电子能谱（XPS）等方法对SPR传感器中的TaS层进行了表征。探索了结构化TaS纳米颗粒的应用范围，这些基于TaS的传感器被用于检测汞离子，检测限接近1皮摩尔（pM），并提供了一种设计高灵敏度检测技术的创新思路。
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