{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T06:57:00Z","timestamp":1781161020322,"version":"3.54.1"},"reference-count":18,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2026,6,9]],"date-time":"2026-06-09T00:00:00Z","timestamp":1780963200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"project supporting young doctors in the universities of Gansu province of China","award":["2023QB-119"],"award-info":[{"award-number":["2023QB-119"]}]},{"name":"Lanzhou University of Arts and Sciences of China","award":["202208"],"award-info":[{"award-number":["202208"]}]},{"name":"Key Talent Project of Gansu Province of China","award":["2025RCXM034"],"award-info":[{"award-number":["2025RCXM034"]}]},{"name":"Natural Science Foundation Project of Gansu Province","award":["26JRRA694"],"award-info":[{"award-number":["26JRRA694"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Micromachines"],"abstract":"<jats:p>Addressing the critical limitation of high operating temperatures plaguing conventional resistive gas sensors, this work reports the synthesis of Zn-doped SnS gas-sensing materials with doping concentrations of 0%, 2%, and 4% via a one-step hydrothermal route\u2014an approach that enables precise regulation of dopant distribution and material microstructure. Systematic gas-sensing tests demonstrate that all as-prepared sensors exhibit remarkable responsiveness to methanol at a reduced optimal operating temperature of 240 \u00b0C, with the response values increasing significantly with Zn doping content: 22.1% for pristine SnS, 48.9% for 2% Zn-doped SnS, and 65.2% for 4% Zn-doped SnS when exposed to 50 ppm methanol. Beyond enhanced response, the Zn-doped SnS sensors maintain excellent methanol selectivity against interfering gases (e.g., ethanol, formaldehyde, acetone) and achieve a low detection limit of 5 ppm, which meets the practical requirements for trace methanol monitoring. The superior performance of 4% Zn-doped SnS\u2014exhibiting a 195% response enhancement compared to pristine SnS\u2014originates from the synergistic effects of Zn-induced defect engineering and improved charge carrier mobility, as supported by structural and electrical characterizations. This study not only provides a facile strategy for developing low-temperature-operating methanol sensors but also highlights the potential of Zn-doped SnS as a promising candidate for high-performance gas-sensing applications in environmental monitoring, industrial safety, and biomedical detection.<\/jats:p>","DOI":"10.3390\/mi17060707","type":"journal-article","created":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T05:50:58Z","timestamp":1781157058000},"page":"707","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Studying the Performance of SnS-Based Zn (0%, 2% and 4%)-Doped Methanol Sensors Under the Optimal Temperature of 240 \u00b0C"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8138-0935","authenticated-orcid":false,"given":"Yaotong","family":"Ma","sequence":"first","affiliation":[{"name":"School of Electronics and Communication Engineering, Lanzhou University of Arts and Sciences, Lanzhou 730000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaofeng","family":"Yuan","sequence":"additional","affiliation":[{"name":"School of Electronics and Communication Engineering, Lanzhou University of Arts and Sciences, Lanzhou 730000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fanting","family":"Kong","sequence":"additional","affiliation":[{"name":"School of Electronics and Communication Engineering, Lanzhou University of Arts and Sciences, Lanzhou 730000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"134630","DOI":"10.1016\/j.snb.2023.134630","article-title":"Mixed potential type methanol gas sensor based on Gd2Zr2O7 solid state electrolyte and ZnSb2O6 sensing electrode","volume":"397","author":"Li","year":"2023","journal-title":"Sens. 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