Enhanced acetone gas sensing performance of the multiplenetworked Fe2O3-functionalized In2O3 nanowire sensor

다국어 초록 (Multilingual Abstract)

In2O3 nanowires functionalized with Fe2O3 nanoparticles were synthesized by the thermal evaporation of In2S3 powders in an oxidizing atmosphere followed by the solvothermal deposition of Fe2O3 and their acetone gas sensing properties were examined. The pristine and Fe2O3-functionalized In2O3 nanowires exhibited responses of 141e390% and 298e960%, respectively, to 10e500 ppm acetone at 200 ℃. The Fe2O3-functionalized In2O3 nanowire sensor showed stronger electrical response to acetone gas at 200 ℃ than the pristine In2O3 nanowire counterpart. The former showed more rapid response but slower recovery than the latter. Both the pristine and Fe2O3-functionalized In2O3 nanowire sensors showed the strongest response to acetone gas at 200 ℃. The underlying mechanism for the enhanced sensing performance of the Fe2O3-functionalized In2O3 nanowire sensor towards acetone gas is discussed.

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