پديدآورندگان :
Musevi Seyid Javad Department of Chemistry, Shahid Beheshti Technical Faculty, Technical and Vocational University, Urmia, Islamic Republic of Iran ; , Farhadi Saeid a.aslani110@yahoo.com Department of Chemistry, University of Lorestan, Lorestan-Khoramabad 68135-465, Iran; E-mail: , Zebardastib Abedin Department of Chemistry, University of Lorestan, Lorestan-Khoramabad 68135-465, Iran; , Aslani Alireza Department of Chemistry, University of Lorestan, Lorestan-Khoramabad 68135-465, Iran
كليدواژه :
ZnO , Nanoparticles , CO2 , Gas Sensing
چكيده فارسي :
ZnO nanostructures of different methods and sizes were grown in a controlled manner using a simple hydrothermal and sonochemical technique. Controlling the content of concentration and temperature of the reaction mixture, spherical nanoparticles ZnO structures could be synthesized at temperatures 100-150 °C with excellent reproducibility in solvothermal and at different power and time in sonochemical methods. These ZnO nanostructures have been tested for CO2 gas monitoring by depositing them as thick films on an interdigitated alumina substrate and evaluating the surface resistance of the deposited layer as a function of operating temperature and CO2 concentrations. The gas sensitivity tests have demonstrated that the ZnO nanostructures, spherical morphology, exhibit high sensitivity to CO2 proving their applicability in gas sensors. The role of the nanostructure on the sensing properties of ZnO is also discussed.
