{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T01:53:01Z","timestamp":1778723581114,"version":"3.51.4"},"reference-count":35,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2025,1,21]],"date-time":"2025-01-21T00:00:00Z","timestamp":1737417600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Yunnan Province Science and Technology Major Project for Materials Genetic Engineering of Rare and Precious Metal","award":["202002AB080001"],"award-info":[{"award-number":["202002AB080001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>Poor selectivity is one of the main bottlenecks restricting the development of metal oxide semiconductor (MOS) sensors. In this paper, using hydrogen cyanide (HCN) as the target gas, CeMnOx as the catalytic layer material and Pt@SnO2 as the gas-sensitive layer material, we have proposed a scheme to improve the selectivity of a catalytic layer\/gas-sensitive layer-laminated MOS sensor under dynamic temperature modulation. We tested HCN and 12 kinds of battlefield environment simulation gases, and the results showed that the CeMnOx\/Pt@SnO2 sensor, under the condition of temperature dynamic modulation (a constant temperature of 400 \u00b0C for the gas-sensitive layer and a variable temperature of room temperature to 400 \u00b0C for the catalytic layer; the heating and cooling rates were 200 \u00b0C\/s, the highest temperature was maintained for 2 s, and the lowest temperature was maintained for 2 s), distinct characteristic peaks appeared on the G-T curves of the resistance response to HCN only. The quantification of the characteristic peaks was performed by peak heights, and the peak height of 5 mg\/m3 HCN was obtained up to 0.104, while the peak heights of the other gases at the same concentration were up to 0.034. The peak height of HCN was significantly higher than that of other gases, which verified the high selectivity of the sensor for HCN. Meanwhile, the sensor also showed good sensitivity, response\/recovery time, stability and anti-interference for HCN under the above temperature dynamic modulation. This work provides an important reference for the selectivity improvement of MOS sensors for HCN.<\/jats:p>","DOI":"10.3390\/nano15030155","type":"journal-article","created":{"date-parts":[[2025,1,21]],"date-time":"2025-01-21T08:46:26Z","timestamp":1737449186000},"page":"155","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Improved Selectivity of CeMnOx\/Pt@SnO2 Laminated MOS Sensor for Hydrogen Cyanide Under Temperature Dynamic Modulation"],"prefix":"10.3390","volume":"15","author":[{"given":"Yadong","family":"Liu","sequence":"first","affiliation":[{"name":"Institute of NBC Defence, Beijing 102205, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yelin","family":"Qi","sequence":"additional","affiliation":[{"name":"Institute of NBC Defence, Beijing 102205, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wen","family":"Yang","sequence":"additional","affiliation":[{"name":"Institute of NBC Defence, Beijing 102205, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tengbo","family":"Ma","sequence":"additional","affiliation":[{"name":"Institute of NBC Defence, Beijing 102205, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shunping","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ting","family":"Liang","sequence":"additional","affiliation":[{"name":"Institute of NBC Defence, Beijing 102205, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1496","DOI":"10.1080\/10807039.2019.1587288","article-title":"Physiologically based pharmacokinetic modeling of hydrogen cyanide in humans following the oral administration of potassium cyanide and cyanogenic glycosides from food","volume":"26","author":"Tran","year":"2020","journal-title":"Hum. 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