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Nanocube In2O3@RGO heterostructure based gas sensor for acetone and formaldehyde detection

机译：基于纳米立方In 2 O 3 @RGO异质结构的气体传感器，用于丙酮和甲醛检测

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Here, we studied the gas sensing response properties for acetone and formaldehyde by a chemiresistive nanocube In2O3@RGO heterostructure sensor. The nanocube In2O3@RGO heterostructure based sensor demonstrates a high response to acetone (～85%) and formaldehyde (～88%) at 25 ppm concentration and optimum working temperatures of 175 °C and 225 °C, respectively. Additionally, we examined the influence of potential barrier heights in the response/recovery time of the nanocube In2O3@RGO heterostructure based acetone and formaldehyde gas sensor. The real-time response/recovery analysis reveal that the sensor response depends on the potential barrier height as well as adsorbed active sites (O2? & O?) on the sensor surface. Furthermore, the nanocube In2O3@RGO heterostructure based gas sensor shows good selectivity to acetone and formaldehyde at optimum working temperature of 175 °C and 225 °C, respectively, compared to the other interfering gases such as ethanol, methanol, chloroform, toluene, benzene, ammonia, formic acid and acetic acid. The life-time analysis has been performed for 30 days, which showes the stability of nanocube In2O3@RGO heterostructure based acetone and formaldehyde sensor.
机译：在这里，我们研究了化学阻性纳米立方体In 2 O 3 @对丙酮和甲醛的气敏响应特性RGO异质结构传感器。基于纳米立方体的In 2 O 3 @RGO异质结构传感器对丙酮的响应较高（〜85％）浓度为25 ppm时，甲醛和甲醛（〜88％）的最佳工作温度分别为175°C和225°C。此外，我们研究了势垒高度对In 2 O 3 @RGO基于异质结构的丙酮和甲醛气体传感器。实时响应/恢复分析表明，传感器响应取决于势垒高度以及所吸附的活性部位（O 2 ？< / sup> 和O ？ ）。此外，基于异质结构的In 2 O 3 @RGO纳米立方气体传感器对丙酮和甲醛的选择性很高。与其他干扰气体（例如乙醇，甲醇，氯仿，甲苯，苯，氨，甲酸和乙酸）相比，最佳工作温度分别为175°C和225°C。生命周期分析已经进行了30天，显示了纳米立方体In 2 O 3 的稳定性基于RGO异质结构的丙酮和甲醛传感器。

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