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Journal Articles Sensors and Actuators B: Chemical Year : 2021

Ozone detection in the ppt-level with rGO-ZnO based sensor

Bruno Sanches de Lima
  • Function : Correspondent author
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Amanda Akemy Komorizono
  • Function : Author
Jerome Brunet
Amadou Ndiaye
Maria Bernardini
  • Function : Author
Valmor Roberto Mastelaro
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Abstract

Although several studies have explored the rGO-ZnO nanocomposites gas sensing properties towards many gases,only a few are devoted to ozone detection. This paper explores a novel synthesis procedure of rGO-ZnO nanocomposites based upon a two-step physical process. Namely, a reduction process of GO carried out using UV laser radiation followed by a deposition of ZnO nanoparticles on the rGO surface by RF-magnetron Sputtering. Our results demonstrate that the deposition of ZnO on the surface of the rGO film produces a stable and conductive material with a larger surface area. Consequently, this material is able to operate at high temperatures and exhibited a limit of detection (LOD) in the range of 100 ppt while pure ZnO exhibited LOD in the vicinity of 1 ppb.
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Dates and versions

hal-03261700 , version 1 (24-04-2023)

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Attribution - NonCommercial

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  • HAL Id : hal-03261700 , version 1

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Bruno Sanches de Lima, Amanda Akemy Komorizono, Weverton Alison dos Santos Silva, Jerome Brunet, Amadou Ndiaye, et al.. Ozone detection in the ppt-level with rGO-ZnO based sensor. Sensors and Actuators B: Chemical, 2021. ⟨hal-03261700⟩
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