Hydrothermal Synthesis of In2O3 :Ag Nanostructures for NO2 Gas Sensor
- 7 Downloads
In this work, Ag doped In2O3 nanostructure materials were successfully synthesis using a simple hydrothermal process with different Ag concentration (3,6,9)%. The structural properties and morphology of the obtained nanostructure film are characterized by X-ray diffraction and field emission scanning electron microscopy (FE-SEM). The structural analysis shows a highly crystalline of indium oxide with a cubic phase and the crystallite size decreased with the increasing of doping concentration. The current–voltage results from devices indicate that In2O3 film with 9% Ag concentration has better conduction film. Gas sensing performance was studied for NO2 gas with different concentration (50,100,150) ppm at operating temperature 100 °C. The maximum sensitivity (S = 79 %) was found at doping concentration 9% Ag.
KeywordsNanostructured In2O3 Hydrothermal Gas sensing
Unable to display preview. Download preview PDF.
The authors would like to acknowledge the support from the staff of material Laboratory in physics department al Mustansiriyah University.
- 3.Liu X, Zhou L, Yi R, Zhang N, Shi R, Li Y, Gao G, Qiu G (2008) Single-crystalline indium hydroxide and indium oxide microcubes: synthesis and characterization. J Phys Chem 15:134Google Scholar
- 5.John Bosco Balaguru R (2009) Mimic of a gas sensor, metal oxide gas sensing mechanism, factors influencing the sensor performance and role of nanomaterials based gas sensors. School of Electrical & Electronics Engineering SASTRA UniversityGoogle Scholar
- 11.Mehta BR, Singh VN (2005) Structural, electrical and gas-sensing properties of In2 O 3:Ag composite nanoparticle layers PRAMANA. Journal of Physics Indian Academy of Sciences 65(5):949–958Google Scholar