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In fact, IoT is bringing sensor usage to a new level, where gas and ultraviolet (UV) sensors are largely integrated, guaranteeing the well-being and safety of people, with the immediate detection and response to changes in an environment. Gas and UV sensors based on titanium dioxide (TiO<jats:sub>2<\/jats:sub>) have been largely reported, where numerous efforts have been devoted to improving its sensing performance, especially when employing TiO<jats:sub>2<\/jats:sub> at the nanoscale. TiO<jats:sub>2<\/jats:sub> has the advantage of being chemical stable, non-toxic, inexpensive, and compatible with low-cost wet-chemical synthesis routes. This review outlines the current state of flexible gas and UV sensor technologies having TiO<jats:sub>2<\/jats:sub> as the sensing layer and the impact of this nanostructured material on the field.<\/jats:p>","DOI":"10.1007\/s43939-022-00023-5","type":"journal-article","created":{"date-parts":[[2022,3,31]],"date-time":"2022-03-31T09:03:56Z","timestamp":1648717436000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":45,"title":["Flexible nanostructured TiO2-based gas and UV sensors: a review"],"prefix":"10.1007","volume":"2","author":[{"given":"Daniela","family":"Nunes","sequence":"first","affiliation":[]},{"given":"Elvira","family":"Fortunato","sequence":"additional","affiliation":[]},{"given":"Rodrigo","family":"Martins","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2022,3,31]]},"reference":[{"key":"23_CR1","volume-title":"AI, Edge and IoT-based Smart Agriculture","author":"A Abraham","year":"2021","unstructured":"Abraham A, Dash S, Rodrigues JJ, Acharya B, Pani SK. 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