Room Temperature Based SnO2/MoS2 Chemiresistive Sensor for Highly Selective Detection of Acetone for Disease Management through Simulated Gas Mixture Analysis

被引:0
|
作者
Siraj, Sohel [1 ]
Rybicki, Frank J. [3 ,4 ]
Sonkusale, Sameer [2 ,3 ,4 ]
Sahatiya, Parikshit [1 ]
机构
[1] Birla Inst Technol & Sci BITS Pilani, Dept Elect & Elect Engn, Hyderabad Campus, Pilani 500078, India
[2] Tufts Univ, Dept Elect & Comp Engn, Medford, MA 02155 USA
[3] Tufts Univ, Nano Lab, Medford, MA 02155 USA
[4] Tufts Univ, Dept Chem & Biol Engn, Medford, MA 02155 USA
关键词
Selectivity; MOS2; SnO2; Chemiresistive Sensor; Volatile OrganicCompound; Interference; Simulated Gas Mixture; SENSING PROPERTIES; EXHALED BREATH; CO3O4; POLYPYRROLE; NANOFIBERS; BIOMARKERS; DIAGNOSIS;
D O I
10.1021/acsaelm.4c01402
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Monitoring volatile organic compounds (VOCs), especially acetone, in human exhaled breath is essential for various disease diagnoses such as diabetes, lung cancer, and heart failure. However, the selective detection of acetone in complex gas mixtures under large humidity variations remains a major challenge. This report demonstrates a highly selective SnO2/MoS2 chemiresistive sensor for the detection of acetone in such complex mixtures with relative humidities ranging from 10% to 90% at room temperature. The fabricated acetone sensor exhibited an excellent response similar to 13.56% at lower concentrations (100 ppb) of acetone with minimal interference from other tested VOCs (ethanol, methanol, toluene, benzene, and formaldehyde gas). Further, a simulated gas mixture at 90% RH (Relative Humidity) was used to generate a calibration curve for acetone monitoring showing a linear range from 100 to 1000 ppb with a LOD (limit of detection) of similar to 26 ppb. Finally, a proof of concept for the detection of acetone in a simulated gas mixture was successfully demonstrated, which paves the way for the noninvasive detection of diseases through human breath analysis.
引用
收藏
页码:8031 / 8038
页数:8
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