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. 2016 Sep 12;6:33092. doi: 10.1038/srep33092

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Copyright © 2016, The Author(s)

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(a) band structure model in air and in ethanol (E_V: valence band; E_C: conduction band; E_F: Fermi level; qΦ: effective energy barrier of the heterojunction); (b) model of the TiO₂/Ag_0.35V₂O₅ branched nanoheterostructures based sensor exposed in air (step 1, step2, and step 3) and ethanol vapor (step 4 and step 5), respectively.