Low-Cost Hydrogen Sulfide Gas Sensor on Paper Substrates: Fabrication and Demonstration

Sarfraz J.

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Low-Cost Hydrogen Sulfide Gas Sensor on Paper Substrates: Fabrication and Demonstration

机译：纸质基材上的低成本硫化氢气体传感器：制造和演示

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Drop-cast deprotonated emeraldine base (poly)aniline (PANI)-copper chloride films on paper substrates containing ink-jet printed silver electrodes have been prepared and are shown to be promising low-cost gas-sensors for H₂S at room temperature. These films showed large changes in the conductivity (three to four orders of magnitude) upon exposure to low concentrations of H₂S (10 ppm) due to the formation of CuS and concurrent protonation of PANI. This large response of the sensor can be explained by the relatively large roughness and porosity of this paper substrate. Furthermore, the minimum resistances are low enough to allow light emitting diode lamps to be switched on using a low-voltage battery, thus serving as a proof-of-concept for mass-produced H₂S-sensors for, for example, the food packaging industry.

机译：在包含喷墨印刷银电极的纸质基材上制备了滴铸去质子化的翡翠碱（聚）苯胺（PANI）-氯化铜膜，这些膜显示出可用于H _{2的低成本气体传感器 S在室温下。由于形成了CuS和同时发生了PANI的质子化反应，这些薄膜在暴露于低浓度的H _{2 S（10 ppm）时显示出较大的电导率变化（三至四个数量级）。传感器的这种大响应可以通过该纸基材的相对较大的粗糙度和孔隙率来解释。此外，最小电阻足够低，以允许使用低压电池来打开发光二极管灯，从而用作批量生产的H _{2 S传感器的概念验证。例如，用于食品包装行业。}}}

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《Sensors Journal, IEEE》 |2012年第6期|p.1973-1978|共6页
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Low-Cost Hydrogen Sulfide Gas Sensor on Paper Substrates: Fabrication and Demonstration

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