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Porous Micro-/Nano-Structures of ZnO-/In2O3 Composite with Enhanced Gas Sensing Properties

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Pristine In2O3, ZnO and ZnO–In2O3 composite having porous micro-/nano structures were synthesized by hydrothermal method. The as-prepared samples were characterized by various techniques including scanning electron microscopy (SEM) and X-ray diffraction (XRD). Compared with pristine In2O3 and ZnO, ZnO–In2O3 composite showed the improved response for ethanol and acetone. The ZnO–In2O3 composite based sensor's response (S = R a/R g) to 200 ppm ethanol at 370 °C was recorded as 65, about 3 times more than that of the pristine In2O3. The response and recovery time of ZnO-/In2O3 composite to 50 ppm ethanol were observed as 1 s and 33 s, respectively.
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Document Type: Short Communication

Publication date: September 1, 2017

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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