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Synthesis and evaluation of gas sensing properties of PANI based graphene oxide nanocomposites

机译：聚苯胺基氧化石墨烯纳米复合材料的气敏性能合成与评价

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摘要

Polyaniline (PANI) nanofibers and Polyaniline/Graphene Oxide (PANI/GO), Polyaniline/Graphene Oxide/ Zinc Oxide (PANI/GO/ZnO) nanocomposites were successfully prepared by nanoemulsion method. The synthesized nanofibers and nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Field emission scanning electron microscope (FE-SEM), has showed the evidence of interaction between PANI nanofibers, GO nanosheets and ZnO nanoparticles, respectively. PANI nanofibers and nanocomposites were used for the sensing of NH_3, LPG, CO_2 and H_2S gases respectively at room temperature. It was observed that the PANI nanofibers and PANI/GO, PANI/ GO/ZnO nanocomposites with different weight ratios of ZnO and GO had better selectivity and sensitivity towards NH_3 at room temperature. Best performance was shown by PANI/GO/ZnO nanocomposite response of 5.706 (10.3 times better response than PANI sensor) for 1000 ppm NH_3 at 80 ± 1 °C with the recovery time of 1 min 30 s only.
机译：通过纳米乳液法成功地制备了聚苯胺（PANI）纳米纤维和聚苯胺/氧化石墨烯（PANI / GO），聚苯胺/氧化石墨烯/氧化锌（PANI / GO / ZnO）纳米复合材料。通过傅里叶变换红外光谱（FTIR），X射线衍射（XRD）和场发射扫描电子显微镜（FE-SEM）对合成的纳米纤维和纳米复合材料进行了表征，显示了PANI纳米纤维，GO纳米片和ZnO之间相互作用的证据。纳米颗粒。 PANI纳米纤维和纳米复合材料分别用于在室温下感测NH_3，LPG，CO_2和H_2S气体。观察到不同重量比的ZnO和GO的PANI纳米纤维和PANI / GO，PANI / GO / ZnO纳米复合材料在室温下对NH_3具有更好的选择性和敏感性。在80±1°C下，对1000 ppm NH_3的PANI / GO / ZnO纳米复合物响应为5.706（比PANI传感器的响应高10.3倍），显示了最佳性能，而恢复时间仅为1分钟30 s。

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