Specific detection of n-propanol gas via terahertz metasurface sensor modified by molecularly imprinted polymer

被引:13
|
作者
Lin, Shangjun [1 ]
Liu, Wentao [1 ]
Hou, Xuehe [1 ]
Peng, Zhenyun [1 ]
Chen, Zhencheng [1 ]
Hu, Fangrong [1 ]
机构
[1] Guilin Univ Elect Technol, Guangxi Key Lab Automat Detecting Technol & Instr, Guilin 541004, Peoples R China
关键词
Molecular imprinted polymer; N-propanol; Terahertz metasurface; Gas sensor; Spectroscopy; SPECTROSCOPY; BIOMARKERS;
D O I
10.1016/j.saa.2023.122413
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
As an organic substance, n-propanol gas has been paid attention to in environmental monitoring and exhalation of lung cancer patient. In this paper a rapid detection method for n-propanol gas is developed based on molecularly imprinted polymers (MIP) and terahertz (THz) metasurface sensors. We first prepared a MIP suitable for detecting the n-propanol gas. And then the n-propanol MIP was modified to the THz metasurface sensor for detecting the n-propanol gas. Since the MIP adsorbed with n-propanol changes the dielectric environment of the sensor, the resonance frequency of the sensor also change. So we based on the n-propanol concentration was analyzed according to the change in resonance frequency. The experimental results showed that the sensor can effectively detect the n-propanol concentration in the range of 50-500 ppm (parts per million). In addition, we also verified the specificity and repeatability of the sensor. This work provides a new idea and method for the sensitive and specific detection of n-propanol gas.
引用
收藏
页数:8
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