2026-04-22T20:22:53Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/57362024-07-25T07:25:13Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477

Rassu, Pietro dc51d06c-4456-41d6-a7be-889d4fb0cd96 500 Malfatti, Luca e4d4d217-84be-4523-9bce-d08d3fc49f3d 500 Carboni, Davide 66c6b370-8c8a-423b-b4c9-798b27e91bd0 500 Casula, Maria F. 3ee9cd41-0f45-4b1a-a1ab-763355589ae6 500 Garroni, Sebastiano 227 500 0000-0001-7686-6589 Zampetti, Emiliano 0fd74dcf-224d-4862-bc45-5c464451a451 500 Macagnano, Antonella c9121c3b-f2cf-4711-a7cb-f52e9765c95b 500 Bearzotti, Andrea d4cdcbe8-f1da-4aad-9e25-46e6a83b6062 500 Innocenzi, Plinio 0477e664-a37b-477f-bb40-8b0bafad62e7 500 2021-04-27T09:41:21Z 2021-04-27T09:41:21Z 2017-12 2050-7526 http://hdl.handle.net/10259/5736 10.1039/C7TC03397D 2050-7534 The application of titania materials to gas sensing devices based on thin films are of limited utility because they only operate at a high working temperature and exhibit in general a low sensitivity. To overcome these constraints, a new type of oxygen sensor based on mesoporous titania thin films working at room temperature under UV irradiation has been developed. The increased density of charge carriers induced by the photoconductive effect, has been used to enhance the sensitivity of the thin oxide layers. Mesostructured titania films have been prepared via self-assembly and thermal processing to remove the organic template obtaining anatase nanocrystals. The mesoporous films show a striking decrease of the current in the presence of oxygen that acts as an electron scavenger. Mesoporous samples exhibit a much higher response with respect to dense titania, due to the higher surface area and the larger number of surface defects. RAS is acknowledged for funding this project through CRP 30 L.R. 7/2007 ‘‘Bando Capitale Umano ad Alta Qualificazione annualita` 2015’’. This work was partially supported by the project ‘‘Mi ADATTI E L’ABBATTI’’- INSTM-Regione Lombardia project INSTMRL6. application/pdf eng Royal Society of Chemistry Journal of Materials Chemistry C. 2017, V. 5, n. 45, p. 11815-11823 https://doi.org/10.1039/C7TC03397D info:eu-repo/grantAgreement/Regione Lombardia/INSTMRL6 Materiales Ensayos (Tecnología) Materials Testing Mesoscale organization of titania thin films enables oxygen sensing at room temperature info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess Journal of Materials Chemistry C 5 45 11815 11823 THUMBNAIL Rassu-jmcc_2018.pdf.jpg Rassu-jmcc_2018.pdf.jpg IM Thumbnail image/jpeg 2602 https://riubu.ubu.es/bitstream/10259/5736/3/Rassu-jmcc_2018.pdf.jpg 481bd11e1b09cc510e2159c75b4c60dc MD5 3 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/5736/2/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 2 ORIGINAL Rassu-jmcc_2018.pdf Rassu-jmcc_2018.pdf application/pdf 2382839 https://riubu.ubu.es/bitstream/10259/5736/1/Rassu-jmcc_2018.pdf 7978af4d7dcca891a1fd18ac658e220d MD5 1 10259/5736 oai:riubu.ubu.es:10259/5736 2024-07-25 09:25:13.296 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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