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. 2017 Aug 27;17(9):1971. doi: 10.3390/s17091971

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

The proposed sensing mechanism diagram of TiO₂/Ag_0.35V₂O₅ nanoheterostructures. (a) Schematic band structure of TiO₂/Ag_0.35V₂O₅ heterojunction exposed in air and ethanol gases (qΦ: energy barrier); (b) Sensing model of the TiO₂/Ag_0.35V₂O₅ nanoheterostructured sensor in air (Steps 1–3) and in ethanol (Steps 4–5) [95]. Copyright 2016 Nature.