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Toward a Highly Functional Hybrid ZnO Nanofiber–rGO Gas Sensor
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-06-02 , DOI: 10.1002/adem.202000005 Talieh Salehi 1 , Aboozar Taherizadeh 1 , Abbas Bahrami 1 , Alireza Allafchian 2 , Vahid Ghafarinia 3
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-06-02 , DOI: 10.1002/adem.202000005 Talieh Salehi 1 , Aboozar Taherizadeh 1 , Abbas Bahrami 1 , Alireza Allafchian 2 , Vahid Ghafarinia 3
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Herein, a hybrid ZnO nanofiber/reduced graphene oxide (rGO) gas sensor is fabricated to detect acetone gas. Metal oxides, including ZnO, SnO2, and TiO2, have been widely used as gas sensors. This article investigates the implications of incorporating rGO into the network of ZnO nanofibers for the sensing characteristics of ZnO. Electrospinning, followed by a calcination treatment at 600 °C, is used to synthesize ZnO nanofibers. The synthesis is carried out with different ratios of zinc acetate (ZnAc) and GO. Scanning electron microscopy (SEM) is used to study the morphology of the nanofibers before and after calcination. Results show that the diameter of nanofibers before and after calcination is in the range of 400–650 and 190–480 nm, respectively. Results also confirm that rGO sheets are very well intermingled with ZnO nanofibers. It appear that the higher the weight fraction of ZnAc, the higher sensitivity to acetone can be attained. The addition of graphene to the ZnO‐based sensor is associated with an increase in the sensitivity of the fabricated sensor from 2.3 to 4 and a significant decrease in the operating temperature of the sensor from 400 to 200 °C.
中文翻译：
迈向功能强大的混合ZnO纳米纤维-rGO气体传感器
本文中，制造了混合的ZnO纳米纤维/氧化石墨烯（rGO）气体传感器来检测丙酮气体。ZnO，SnO 2和TiO 2等金属氧化物，已被广泛用作气体传感器。本文研究了将rGO并入ZnO纳米纤维网络对ZnO感测特性的影响。电纺丝，然后在600°C下进行煅烧处理，用于合成ZnO纳米纤维。用不同比例的乙酸锌（ZnAc）和GO进行合成。扫描电子显微镜（SEM）用于研究煅烧前后纳米纤维的形态。结果表明，煅烧前后纳米纤维的直径分别在400–650和190–480 nm范围内。结果还证实，rGO片与ZnO纳米纤维混合得很好。似乎ZnAc的重量分数越高，可以获得对丙酮的更高的敏感性。
更新日期：2020-06-02
中文翻译：
迈向功能强大的混合ZnO纳米纤维-rGO气体传感器
本文中，制造了混合的ZnO纳米纤维/氧化石墨烯（rGO）气体传感器来检测丙酮气体。ZnO，SnO 2和TiO 2等金属氧化物，已被广泛用作气体传感器。本文研究了将rGO并入ZnO纳米纤维网络对ZnO感测特性的影响。电纺丝，然后在600°C下进行煅烧处理，用于合成ZnO纳米纤维。用不同比例的乙酸锌（ZnAc）和GO进行合成。扫描电子显微镜（SEM）用于研究煅烧前后纳米纤维的形态。结果表明，煅烧前后纳米纤维的直径分别在400–650和190–480 nm范围内。结果还证实，rGO片与ZnO纳米纤维混合得很好。似乎ZnAc的重量分数越高，可以获得对丙酮的更高的敏感性。
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