Hydrothermal Synthesis of In2O3 :Ag Nanostructures for NO2 Gas Sensor
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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
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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