Highly Sensitive and Selective Gas Sensors Based on NiO/MnO2@NiO Nanosheets to Detect Allyl Mercaptan Gas Released by Humans under Psychological Stress

• DOI: 10.1002/advs.202202442
• Publication Date: 2022-07-15T20:56:52Z
• Authors: Chunyan Li; Pil Gyu Choi; Yoshitake Masuda
• Keywords: Non-blocking I/O

NiO nanosheets are synthesized in situ on gas sensor chips using a facile solvothermal method. These then used as sensors to analyze allyl mercaptan (AM) gas, an exhaled biomarker of psychological stress. Additionally, MnO2 onto the surfaces enhance gas-sensing performance. The response nanosheet is higher than that @NiO sensor. value can reach 56.69, when detects 40 ppm AM gas. Interestingly, faster time (115 s) obtained exposed Moreover, selectivity toward about 17-37 times greater those confounders. mechanism sensing and factors contributing discussed. products oxidized by identified chromatography-mass spectrometry (GC/MS). detection unprecedented application for semiconductor metal oxides. From broader perspective, developed represent new platform identification monitoring gases released humans under stress, which increasing modern life.