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In order to solve the transmission system problems of Flashover, Ni2+ doped TiO2 thin film and pure TiO2 thin film were prepared by sol-gel method. The crystalline phase and morphology were characterized by XRD and AFM, and static contact angle measurement was employed to estimate the wettability of prepared films. The results indicate that a small amount of Ni2+ doped TiO2 thin film makes hydrophilicity...
Iron films with different thickness were prepared on glass substrate by DC magnetron sputtering. Arrays of α-Fe2O3 nanowires and nanosheets were grown on iron films by thermal oxidation. The morphology and structure of the prepared α-Fe2O3 nanostructures were characterized by SEM, XRD, XPS, Raman and HRTEM. Field emission properties including I-V characteristics, emission uniformity and stability...
The flame-made (5/5) pure ZnO and WO3-doped ZnO nanoparticles containing 0.25, 0.50, and 0.75 mol% of WO3 were successfully synthesized by flame spray pyrolysis (FSP). These materials were studied for NO2, CO and H2 gas sensing at different gas concentrations and operating temperatures ranging from 300-400??C in dry air. The crystalline phase, morphology and size of the nanoparticles were characterized...
In this paper the response of printed thick-film of WO3 doped by Y2O3 to organic solvent was studied. Different ratio of doping was prepared and changes of film resistance at different temperature in present of vaporized types of alcohol were observed. The results showed a high sensitivity of the film of 80.1%WO3-18.8%Y2O3 to Toluene, Xylene, Methanol, and 2-Propanone (Acetone) at 250, 450, and 550degC,...
Development of organic and inorganic composites has grown in recent years due to a wide range of potential use of these materials. The aim of this research is to investigate the effect of Pani additions on the TiO2 based thin film as VOC gas sensing properties. TiO2 were prepared using sol gel technique. Up to 3 wt% of Pani were directly added to the TiO2 solution. 3 layers of TiO2/Pani solution mixture...
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