Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers
Abstract Mitigating ethanol inhibition in chemiresistors is essential for accurately detecting target gases in various fields. Conventional approaches to reducing ethanol interference frequently result in a significant deterioration of sensing capabilities, including decreased target gas response, a...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-06-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-60500-2 |
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| author | Ki Beom Kim Myung Sung Sohn In-Sung Hwang Do Joon Yoo Seong-Yong Jeong Yun Chan Kang Young Kook Moon |
| author_facet | Ki Beom Kim Myung Sung Sohn In-Sung Hwang Do Joon Yoo Seong-Yong Jeong Yun Chan Kang Young Kook Moon |
| author_sort | Ki Beom Kim |
| collection | DOAJ |
| description | Abstract Mitigating ethanol inhibition in chemiresistors is essential for accurately detecting target gases in various fields. Conventional approaches to reducing ethanol interference frequently result in a significant deterioration of sensing capabilities, including decreased target gas response, altered selectivity, and sluggish response kinetics. In this study, a coating of acidic proton form ZSM-5 (HZSM-5) overlayer is proposed as a facile and universal strategy for eliminating ethanol inhibition without compromising intrinsic sensing properties. An HZSM-5 overlayer deposited on the oxide sensors exhibits exceptional formaldehyde (HCHO), which poses harmful health impacts to humans even at trace levels, detection properties by effectively eliminating ethanol interference without altering the HCHO response or response time. The exceptional performance of the bilayer sensor is systematically explained by the dehydration of ethanol to less reactive ethylene by the acidic HZSM-5 overlayer. Analysis using NH3 temperature-programmed desorption (NH3–TPD), proton transfer reaction quadrupole mass spectrometry (PTR–QMS) as well as in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) are performed to verify the above proposals. Additionally, sensor arrays are employed to enable pattern recognition capable of shielding HCHO, benzene, toluene, and p-xylene from ethanol interferents, thereby facilitating the electronic noses for monitoring indoor air pollutants. |
| format | Article |
| id | doaj-art-a1e2b4923071417595780aa5a0ae33c6 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-a1e2b4923071417595780aa5a0ae33c62025-08-20T03:10:34ZengNature PortfolioNature Communications2041-17232025-06-0116111210.1038/s41467-025-60500-2Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayersKi Beom Kim0Myung Sung Sohn1In-Sung Hwang2Do Joon Yoo3Seong-Yong Jeong4Yun Chan Kang5Young Kook Moon6Department of Materials Science and Engineering, Korea UniversityDepartment of Materials Science and Engineering, Korea UniversitySentech GMI Co. LtdSentech GMI Co. LtdDivision of Advanced Materials engineering, Kongju National UniversityDepartment of Materials Science and Engineering, Korea UniversityNanomaterials Research Division, Korea Institute of Materials Science (KIMS)Abstract Mitigating ethanol inhibition in chemiresistors is essential for accurately detecting target gases in various fields. Conventional approaches to reducing ethanol interference frequently result in a significant deterioration of sensing capabilities, including decreased target gas response, altered selectivity, and sluggish response kinetics. In this study, a coating of acidic proton form ZSM-5 (HZSM-5) overlayer is proposed as a facile and universal strategy for eliminating ethanol inhibition without compromising intrinsic sensing properties. An HZSM-5 overlayer deposited on the oxide sensors exhibits exceptional formaldehyde (HCHO), which poses harmful health impacts to humans even at trace levels, detection properties by effectively eliminating ethanol interference without altering the HCHO response or response time. The exceptional performance of the bilayer sensor is systematically explained by the dehydration of ethanol to less reactive ethylene by the acidic HZSM-5 overlayer. Analysis using NH3 temperature-programmed desorption (NH3–TPD), proton transfer reaction quadrupole mass spectrometry (PTR–QMS) as well as in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) are performed to verify the above proposals. Additionally, sensor arrays are employed to enable pattern recognition capable of shielding HCHO, benzene, toluene, and p-xylene from ethanol interferents, thereby facilitating the electronic noses for monitoring indoor air pollutants.https://doi.org/10.1038/s41467-025-60500-2 |
| spellingShingle | Ki Beom Kim Myung Sung Sohn In-Sung Hwang Do Joon Yoo Seong-Yong Jeong Yun Chan Kang Young Kook Moon Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers Nature Communications |
| title | Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers |
| title_full | Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers |
| title_fullStr | Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers |
| title_full_unstemmed | Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers |
| title_short | Mitigating alcohol inhibition of oxide chemiresistors: bilayer sensors with HZSM-5 zeolite overlayers |
| title_sort | mitigating alcohol inhibition of oxide chemiresistors bilayer sensors with hzsm 5 zeolite overlayers |
| url | https://doi.org/10.1038/s41467-025-60500-2 |
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