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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >High-performance room temperature NH3 gas sensors based on polyaniline-reduced graphene oxide nanocomposite sensitive membrane
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High-performance room temperature NH3 gas sensors based on polyaniline-reduced graphene oxide nanocomposite sensitive membrane

机译：基于聚酰氯还原氧化物纳米复合敏感膜的高性能室温NH3气体传感器

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摘要

In this study, polyaniline-reduced graphene oxide (PANI-rGO) nanocomposite films were used as sensitive membranes in NH3 gas sensors operated at room temperature (300 K). The responsivity and response speed of the PANI-rGO NH3 gas sensors were improved by homogeneously distributing PANI nanospheres on both surfaces of rGO nanosheets. The optimal weight ratio was 125 which was obtained by changing the weight ratio of PANI/rGO in the NH3 gas sensors. The NH3 gas sensors based on rGO and PANI sensitivity membranes had responsivities of 0.5% and 8.3%, whereas the recovery times were 8.0 and 48.0 min, respectively. The optimal responsivity and recovery time of these PANI-rGO NH3 gas sensors operated at room temperature under a 15-ppm NH3 gas environment were 13.0% and 22.1 min, respectively. However, because the responsivity of a rGO sensing membrane was considerably less than that of a PANI sensing membrane, the responsivity of the PANI-rGO NH3 gas sensors was reduced by incorporating more rGO content. The lowest detectable NH3 gas concentration of the PANI-rGO NH3 gas sensors was 0.3 ppm. (C) 2019 Elsevier B.V. All rights reserved.
机译：在该研究中，将聚酰氯还原的石墨烯（PANI-RGO）纳米复合膜用作在室温（300k）的NH 3气体传感器中的敏感膜。通过在RGO纳米片的两个表面上均匀分布Pani纳米球，改善了Pani-Rgo NH3气体传感器的响应性和响应速度。最佳重量比为125，通过改变NH 3气体传感器中PANI / RGO的重量比而获得。基于RGO和Pani敏感性膜的NH3气体传感器的响应性为0.5％和8.3％，而恢复时间分别为8.0和48.0分钟。在15ppm NH 3气体环境下在室温下操作的这些PANI-RGO NH3气体传感器的最佳响应性和恢复时间分别为13.0％和22.1分钟。然而，由于Rgo传感膜的响应性显着小于PANI传感膜的响应性，因此通过掺入更多RGO含量来降低PANI-RGO NH3气体传感器的响应度。 PANI-RGO NH3气体传感器的最低可检测NH3气体浓度为0.3ppm。 （c）2019 Elsevier B.v.保留所有权利。

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