Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis
This work presented 0–1 wt% Pt-PtO functionalized WO3 nanostructures synthesized by flame spray pyrolysis (FSP) for methyl mercaptan (CH3SH)-sensing applications. According to electron microscopic and X-ray spectroscopic analysis, 1–3 nm Pt-PtO core-shell nanoparticles were decorated on 5–20 nm prim...
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Elsevier
2025-08-01
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| Series: | Talanta Open |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666831925000669 |
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| author | Kanittha Inyawilert Matawee Punginsang Chonlada Dechakiatkrai Theerakarunwong Anurat Wisitsoraat Chaikarn Liewhiran |
| author_facet | Kanittha Inyawilert Matawee Punginsang Chonlada Dechakiatkrai Theerakarunwong Anurat Wisitsoraat Chaikarn Liewhiran |
| author_sort | Kanittha Inyawilert |
| collection | DOAJ |
| description | This work presented 0–1 wt% Pt-PtO functionalized WO3 nanostructures synthesized by flame spray pyrolysis (FSP) for methyl mercaptan (CH3SH)-sensing applications. According to electron microscopic and X-ray spectroscopic analysis, 1–3 nm Pt-PtO core-shell nanoparticles were decorated on 5–20 nm primary monoclinic WO3 nanoparticles. The gas-sensing data revealed that Pt-PtO loading with an optimum Pt content of 0.5 wt% provided a remarkably enhanced CH3SH response of 204 to 500 ppb CH3SH at the best sensing temperature of 250°C with a low detection limit of 26 ppb and high CH3SH selectivity relative to (CH3)2S, H2S, CH3OH, C2H5OH, C3H6O, NH3, NO2, H2, CH4, C2H2 and short-chain fatty acids (SCFAs) including CH3COOH, C2H5COOH, C3H7COOH. Therefore, the flame-synthesized Pt-PtO functionalized WO3 nanosensors could be potential for CH3SH detection at ppb levels in the medical applications particularly noninvasive breath diagnosis of halitosis and serious infection of periodontitis. |
| format | Article |
| id | doaj-art-deb6909b7aec49e1abd7ec3e9114e372 |
| institution | DOAJ |
| issn | 2666-8319 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Talanta Open |
| spelling | doaj-art-deb6909b7aec49e1abd7ec3e9114e3722025-08-20T03:09:34ZengElsevierTalanta Open2666-83192025-08-011110046410.1016/j.talo.2025.100464Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysisKanittha Inyawilert0Matawee Punginsang1Chonlada Dechakiatkrai Theerakarunwong2Anurat Wisitsoraat3Chaikarn Liewhiran4Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Office of Research Administration, Chiang Mai University, Chiang Mai, 50200, ThailandDepartment of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Office of Research Administration, Chiang Mai University, Chiang Mai, 50200, ThailandChemistry Program, Faculty of Science and Technology, Nakhon Sawan Rajabhat University, Nakhon Sawan 60000, ThailandNational Nanotechnology Center, National Science and Technology Development Agency, Klong Luang, Phathum Thani 12120, ThailandDepartment of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Corresponding author.This work presented 0–1 wt% Pt-PtO functionalized WO3 nanostructures synthesized by flame spray pyrolysis (FSP) for methyl mercaptan (CH3SH)-sensing applications. According to electron microscopic and X-ray spectroscopic analysis, 1–3 nm Pt-PtO core-shell nanoparticles were decorated on 5–20 nm primary monoclinic WO3 nanoparticles. The gas-sensing data revealed that Pt-PtO loading with an optimum Pt content of 0.5 wt% provided a remarkably enhanced CH3SH response of 204 to 500 ppb CH3SH at the best sensing temperature of 250°C with a low detection limit of 26 ppb and high CH3SH selectivity relative to (CH3)2S, H2S, CH3OH, C2H5OH, C3H6O, NH3, NO2, H2, CH4, C2H2 and short-chain fatty acids (SCFAs) including CH3COOH, C2H5COOH, C3H7COOH. Therefore, the flame-synthesized Pt-PtO functionalized WO3 nanosensors could be potential for CH3SH detection at ppb levels in the medical applications particularly noninvasive breath diagnosis of halitosis and serious infection of periodontitis.http://www.sciencedirect.com/science/article/pii/S2666831925000669Pt-PtO functionalized WO3Methyl mercaptan (CH3SH)Gas sensorFlame spray pyrolysis (FSP)HalitosisPeriodontal diagnosis |
| spellingShingle | Kanittha Inyawilert Matawee Punginsang Chonlada Dechakiatkrai Theerakarunwong Anurat Wisitsoraat Chaikarn Liewhiran Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis Talanta Open Pt-PtO functionalized WO3 Methyl mercaptan (CH3SH) Gas sensor Flame spray pyrolysis (FSP) Halitosis Periodontal diagnosis |
| title | Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis |
| title_full | Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis |
| title_fullStr | Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis |
| title_full_unstemmed | Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis |
| title_short | Selectivity towards methyl mercaptan of Pt-PtO functionalized WO3 nanostructures made by flame spray pyrolysis |
| title_sort | selectivity towards methyl mercaptan of pt pto functionalized wo3 nanostructures made by flame spray pyrolysis |
| topic | Pt-PtO functionalized WO3 Methyl mercaptan (CH3SH) Gas sensor Flame spray pyrolysis (FSP) Halitosis Periodontal diagnosis |
| url | http://www.sciencedirect.com/science/article/pii/S2666831925000669 |
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