Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, People's Republic of China.
Nanotechnology. 2019 Jun 21;30(25):255502. doi: 10.1088/1361-6528/ab076e. Epub 2019 Apr 8.
Novel sea cucumber-shaped polyaniline/ferric oxide (PANI/FeO) nanocomposites were synthesized using a simple and efficient one step hydrothermal process, and the nanocomposites were further assembled onto a polyethylene terephthalate (PET) flexible substrate. Through the monitoring of the resistance of the PANI/FeO nanocomposites thick films and PANI/FeO-PET flexible sensors, the responses of the sensors to various 100 ppm gases including methanol, triethylamine, aniline and another five gases were obtained. It was found that two kinds of sensors exhibit a high selectivity towards NH. The PANI/FeO nanocomposites-based sensor has a good response and a low detection limit (0.3 ppm) at room temperature (20 ± 5 °C). It also shows a good linearity relationship in a certain concentration of NH. After assembling into the PANI/FeO-PET flexible film sensor, the response of the sensor is significantly increased to 6.12 for 100 ppm NH, the detection limit is as low as 0.5 ppm, and the sensor shows good stability and linearity, which is more conducive to the application of such a material in wearable gas sensors.
采用简单高效的一步水热法合成了新颖的海参状聚苯胺/氧化铁（PANI/FeO）纳米复合材料，并进一步将纳米复合材料组装到聚对苯二甲酸乙二醇酯（PET）柔性基底上。通过监测 PANI/FeO 纳米复合材料厚膜和 PANI/FeO-PET 柔性传感器的电阻，获得了传感器对包括甲醇、三乙胺、苯胺和另外五种气体在内的各种 100ppm 气体的响应。结果表明，两种传感器对 NH 表现出较高的选择性。基于 PANI/FeO 纳米复合材料的传感器在室温（20±5°C）下具有良好的响应和低检测限（0.3ppm）。它在一定浓度的 NH 中也表现出良好的线性关系。将其组装成 PANI/FeO-PET 柔性薄膜传感器后，传感器的响应显著增加到 100ppmNH 时为 6.12，检测限低至 0.5ppm，传感器表现出良好的稳定性和线性度，这更有利于该材料在可穿戴气体传感器中的应用。
