Izvorni znanstveni članak
https://doi.org/10.24138/jcomss.v14i1.449
The Sensing Characteristics of ZnO Tetrapods Synthesized by Microwave Evaporation
Ahmed S. Afify
orcid.org/0000-0002-4565-5129
; Department of Applied Science and Technology, Politecnico di Torino, Italy
Ahmad Elsayed
orcid.org/0000-0001-9787-8191
; Department of Applied Science and Technology, Politecnico di Torino, Italy
Ahmed S. Abu Khadra
; Department of Basic Sciences, Faculty of Engineering Science, Sinai University, North Sinai, Egypt
Mohamed Hassan
; High Institute of Engineering and Technology, Egypt
Mohamed Ataalla
; Faculty of Engineering and Technology, Badr University in Cairo (BUC), Egypt
Amr Mohamed
; Department of Chemistry, Faculty of Science, Taibah University, Saudi Arabia
Jean Marc Tulliani
; Department of Applied Science and Technology, Politecnico di Torino, Italy
Sažetak
ZnO tetrapods have been grown by an environmental microwave evaporation approach in air atmosphere without any use of organic solvents or precursors. The synthesized powder was characterized using X-ray diffractometry (XRD) and Field emission Scanning Electron Microscopy (FE-SEM). The grown ZnO tetrapods exhibited a noteworthy microstructure and phase formation of crystalline and pure structure. ZnO tetrapods were deposited on Pt electrode to be employed as ZnO tetrapods structure-based sensors, then, they were investigated at room temperature in the relative humidity ranging from 0.0 to 96.0%. The sensors have shown a significant response towards relative humidity starting from 30%. Cross-sensitivity was investigated with respect to N2O (150 ppm in helium) and methane (1000 ppm in helium). The ZnO tetrapods-based sensors were insensitive towards the interfering gases, indicating a potential applicability for humidity sensing purposes.
Ključne riječi
Chemical sensor; Electron microscopy; Humidity measurement; Zinc oxide
Hrčak ID:
199003
URI
Datum izdavanja:
15.3.2018.
Posjeta: 890 *