{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T07:15:46Z","timestamp":1793344546552,"version":"4.5.0"},"reference-count":73,"publisher":"American Chemical Society (ACS)","issue":"16","license":[{"start":{"date-parts":[[2019,10,3]],"date-time":"2019-10-03T00:00:00Z","timestamp":1570060800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/pubs.acs.org\/page\/policy\/authorchoice_termsofuse.html"}],"funder":[{"DOI":"10.13039\/501100004396","name":"Thailand Research Fund","doi-asserted-by":"publisher","award":["RSA6180062"],"award-info":[{"award-number":["RSA6180062"]}],"id":[{"id":"10.13039\/501100004396","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005621","name":"Kasetsart University Research and Development Institute","doi-asserted-by":"publisher","award":["RSA6180062"],"award-info":[{"award-number":["RSA6180062"]}],"id":[{"id":"10.13039\/501100005621","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,10,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Resistive-based gas sensors have been considered as the most favorable gas sensors for detection of toxic gases and volatile organic compounds (VOCs) because of their simple structure, low cost, high sensitivity, ease of use, and high stability. Unfortunately, wide application of resistive-based gas sensors is limited by their low selectivity. In this article, we present the fabrication of ultrahigh selective NH3 gas sensor based on tin\u2013titanium dioxide\/reduced graphene\/carbon nanotube (Sn\u2013TiO2@rGO\/CNT) nanocomposites. The Sn\u2013TiO2@rGO\/CNT nanocomposites with different molar ratios of Sn\/Ti (1:10, 3:10, and 5:10) were synthesized via the solvothermal method. Characterizations by scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy confirmed the decoration of Sn\u2013TiO2 nanoparticles on rGO\/CNT nanocomposite surfaces. The Sn\u2013TiO2@rGO\/CNT nanocomposite gas sensor exhibited high response and ultrahigh selectivity to NH3 against toluene, dimethylformamide, acetone, ethanol, methanol, isopropanol, formaldehyde, hydrogen, carbon dioxide, acetylene, and VOCs in paint thinners at room temperature. The Sn\u2013TiO2@rGO\/CNT nanocomposite gas sensor with molar ratio of Sn\/Ti = 1:10 showed the highest response to NH3 over other molar ratios of Sn\/Ti as well as pure rGO\/CNT and Sn\u2013TiO2 gas sensors. The ammonia-sensing mechanisms of the Sn\u2013TiO2@rGO\/CNT gas sensor were proposed based on the formation of p\u2013n heterojunctions of p-type rGO\/CNT and n-type Sn\u2013TiO2 nanoparticles via a low-temperature oxidizing reaction process.<\/jats:p>","DOI":"10.1021\/acsomega.9b02185","type":"journal-article","created":{"date-parts":[[2019,10,3]],"date-time":"2019-10-03T16:03:25Z","timestamp":1570118605000},"page":"16916-16924","source":"Crossref","is-referenced-by-count":163,"title":["Ultrahigh Selective Room-Temperature Ammonia Gas Sensor\nBased on Tin\u2013Titanium Dioxide\/reduced Graphene\/Carbon Nanotube\nNanocomposites by the Solvothermal Method"],"prefix":"10.1021","volume":"4","author":[{"given":"Yotsarayuth","family":"Seekaew","sequence":"first","affiliation":[{"name":"Kasetsart University , , Chatuchak , ,","place":["Bangkok, Thailand, 10900"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weeraphat","family":"Pon-On","sequence":"additional","affiliation":[{"name":"Kasetsart University , , Chatuchak , ,","place":["Bangkok, Thailand, 10900"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5613-6615","authenticated-orcid":true,"given":"Chatchawal","family":"Wongchoosuk","sequence":"additional","affiliation":[{"name":"Kasetsart University , , Chatuchak , ,","place":["Bangkok, Thailand, 10900"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2019,10,3]]},"reference":[{"key":"2026090207245339900_cit1","doi-asserted-by":"publisher","first-page":"666","DOI":"10.1016\/j.snb.2004.11.054","article-title":"Ammonia\nsensors and their applications-a\nreview","volume":"107","author":"Timmer","year":"2005","journal-title":"Sens. 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