Resumo – Publicações

Ozone detection in the ppt-level with rGO-ZnO based sensor.
LIMA, Bruno Sanches de; KOMORIZONO, Amanda Akemy; SILVA, Weverton Alison dos Santos; NDIAYE, Amadou Latyr; BRUNET, Jerome; BERNARDI, Maria Inês Basso; MASTELARO, Valmor Roberto.
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.
Sensors and Actuators B
v. 338, p. 129779-1-129779-9 - Ano: 2021
Fator de Impacto: 7,100
    @article={003024211,author = {LIMA, Bruno Sanches de; KOMORIZONO, Amanda Akemy; SILVA, Weverton Alison dos Santos; NDIAYE, Amadou Latyr; BRUNET, Jerome; BERNARDI, Maria Inês Basso; MASTELARO, Valmor Roberto.},title={Ozone detection in the ppt-level with rGO-ZnO based sensor},journal={Sensors and Actuators B},note={v. 338, p. 129779-1-129779-9},year={2021}}