Improvement in CO2 sensing characteristics using Pd nanoparticles decorated La2O3 thin films

다국어 초록 (Multilingual Abstract)

La2O3 thinfilms are synthesized by spray pyrolysis method and decorated with palladium nanoparticlesusing successive ionic layer adsorption and reaction method. The structural and morphologicalproperties of La2O3 and Pd-La2O3 are studied by X-ray diffraction, scanning electron microscopy, X-rayphoto-electron spectroscopy and energy dispersive X-ray spectroscopy techniques. CO2 gas sensingproperties of La2O3 and Pd-La2O3 are investigated at different operating temperatures and CO2concentrations. La2O3 exhibited maximum response of 13% at 523 K upon exposure of CO2 gas (500 ppm)which is improved up to 28% after Pd decoration. Pd-La2O3 film shows more selectivity towards CO2 gas.
Additionally, stability of Pd-La2O3 film has been studied.

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