协同集成SERS和QCM传感器,用于无标签的多元组件气体检测
Liwei Hou1, Xinyue Xu2, Fengchun Tian3
1Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044, China; School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing, 400044, China; Chongqing Institute for Food and Drug Control, Chongqing, 401120, China; NMPA Key Laboratory of Quality Monitoring of Anaesthetic and Psychotropic Substances, Chongqing, 401121, China.
本研究介绍了一种结合石英晶微平衡 (QCM) 和表面增强拉曼散射 (SERS) 的新型传感器,用于检测混合挥发性有机化合物 (VOC). 新方法有效地识别和量化具有类似结构的气体,如和甲.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 检测具有相似结构的混合挥发性有机化合物 (VOC) 是化学分析中的一个重大挑战.
- 现有的方法往往在选择性和对复杂气体混合物的敏感性方面扎.
研究的目的:
- 开发一种新的传感器平台,用于同时对多组分气体混合物的定性和定量分析.
- 解决纳米材料在传感器件中的整合挑战,同时保持其高表面积.
主要方法:
- 在石英晶微平衡 (QCM) 上通过电和热水合成制造MIL-100(Fe) /PAN复合纤维.
- 复合材料与表面增强的拉曼散射 (SERS) 检测平台的整合.
- 开发一种新的算法,将QCM频率,SERS强度和气体度相关联起来.
主要成果:
- 开发的MIL-100(Fe) /PAN@QCM传感器实现了同时检测QCM和SERS.
- 对烯和甲的线性反应在0-100ppm之间观察到,检测极限分别为0.57ppm和0.86ppm.
- 该算法成功测量了混合的多和甲气体,相对标准偏差为3-8%.
结论:
- 新型QCM-SERS传感器提供了一种高效快速的方法来检测具有相似结构的气体分子.
- 这种方法为分析复杂的多元组合气体混合物提供了一个有希望的途径.
- 综合材料制造方法克服了以前的整合问题,保持了高性能.
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