{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T12:24:19Z","timestamp":1768739059343,"version":"3.49.0"},"reference-count":39,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,3,22]],"date-time":"2025-03-22T00:00:00Z","timestamp":1742601600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["62271176"],"award-info":[{"award-number":["62271176"]}]},{"name":"National Natural Science Foundation of China","award":["2022-JCJQ-JJ-0438"],"award-info":[{"award-number":["2022-JCJQ-JJ-0438"]}]},{"name":"China National Basic Enhancement Program","award":["62271176"],"award-info":[{"award-number":["62271176"]}]},{"name":"China National Basic Enhancement Program","award":["2022-JCJQ-JJ-0438"],"award-info":[{"award-number":["2022-JCJQ-JJ-0438"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper presents a ZnO-Pt\/Ru sensor prepared by a two-step hydrothermal method with in situ-grown ZnO nanorods and doped with Pt and Ru elements by immersion sintering. Characterization results showed that Pt and Ru were successfully modified on the surface of ZnO nanorods. ZnO-Pt\/Ru achieved a response of 25\u201350 ppm H2S at the optimum operating temperature of 198 \u00b0C. In addition, the lower limit of H2S detection of ZnO-Pt\/Ru reached 50 ppb with a response of about 10%, indicating a wide concentration detection range. Due to the good catalytic properties of Pt, the recovery characteristics of ZnO at high concentrations of H2S were significantly improved. The response time of ZnO-Pt\/Ru (30 s) was also significantly shorter than pristine ZnO (56 s), with excellent selectivity. As far as the gas-sensitive enhancement mechanism is concerned, at the macroscopic level, the ZnO surface was modified by Pt and Ru, and this special structure of ZnO-Pt\/Ru significantly increased the specific surface area. At the microscopic level, the PN junction formed between Pt\/Ru and ZnO provided abundant holes for electron migration.<\/jats:p>","DOI":"10.3390\/s25071995","type":"journal-article","created":{"date-parts":[[2025,3,24]],"date-time":"2025-03-24T06:21:38Z","timestamp":1742797298000},"page":"1995","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Pt\/Ru-Modified ZnO Sensor Grown In Situ for Detection of ppb H2S"],"prefix":"10.3390","volume":"25","author":[{"given":"Jianhua","family":"Zhang","sequence":"first","affiliation":[{"name":"Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4605-9721","authenticated-orcid":false,"given":"Yunbo","family":"Shi","sequence":"additional","affiliation":[{"name":"Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9607-4968","authenticated-orcid":false,"given":"Bolun","family":"Tang","sequence":"additional","affiliation":[{"name":"Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Canda","family":"Zheng","sequence":"additional","affiliation":[{"name":"Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,3,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2394","DOI":"10.1109\/JSEN.2018.2886131","article-title":"Hydrogen Sulfide (H2S) Gas Sensor: A Review","volume":"19","author":"Ali","year":"2019","journal-title":"IEEE Sens. 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