{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T22:56:47Z","timestamp":1767913007385,"version":"3.49.0"},"reference-count":40,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2011,1,25]],"date-time":"2011-01-25T00:00:00Z","timestamp":1295913600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Mesoporous and\/or macroporous SnO2-based powders have been prepared and their gas-sensing properties as thick film sensors towards H2 and NO2 have been investigated. The mesopores and macropores of various SnO2-based powders were controlled by self-assembly of sodium bis(2-ethylhexyl)sulfosuccinate and polymethyl-methacrylate (PMMA) microspheres (ca. 800 nm in diameter), respectively. The introduction of mesopores and macropores into SnO2-based sensors increased their sensor resistance in air significantly. The additions of SiO2 and Sb2O5 into mesoporous and\/or macroporous SnO2 were found to improve the sensing properties of the sensors. The addition of SiO2 into mesoporous and\/or macroporous SnO2 was found to increase the sensor resistance in air, whereas doping of Sb2O5 into mesoporous and\/or macroporous SnO2 was found to markedly reduce the sensor resistance in air, and to increase the response to 1,000 ppm H2 as well as 1 ppm NO2 in air. Among all the sensors tested, meso-macroporous SnO2 added with 1 wt% SiO2 and 5 wt% Sb2O5, which were prepared with the above two templates simultaneously, exhibited the largest H2 and NO2 responses.<\/jats:p>","DOI":"10.3390\/s110201261","type":"journal-article","created":{"date-parts":[[2011,1,25]],"date-time":"2011-01-25T11:57:50Z","timestamp":1295956670000},"page":"1261-1276","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Preparation of Mesoporous and\/or Macroporous SnO2-Based Powders and Their Gas-Sensing Properties as Thick Film Sensors"],"prefix":"10.3390","volume":"11","author":[{"given":"Luyang","family":"Yuan","sequence":"first","affiliation":[{"name":"Graduate School of Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1605-5623","authenticated-orcid":false,"given":"Takeo","family":"Hyodo","sequence":"additional","affiliation":[{"name":"Faculty of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuhiro","family":"Shimizu","sequence":"additional","affiliation":[{"name":"Faculty of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Makoto","family":"Egashira","sequence":"additional","affiliation":[{"name":"Faculty of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2011,1,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4093","DOI":"10.1021\/cr0200062","article-title":"Chemical strategies to design textured materials: From microporous and mesoporous oxides to nano networks and hierarchical structures","volume":"102","author":"Sanchez","year":"2002","journal-title":"Chem. 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