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Few layer graphene/silver nanocomposite based flexible and resistive liquefied petroleum gas sensor
Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2021-09-09 , DOI: 10.1007/s10854-021-06835-0
Solleti Goutham 1 , Kalagadda Venkateswara Rao 1 , Jeevankumar P 2 , Naradala Jayarambabu 3
Affiliation  

The LPG gas sensing characteristics of hybrid few-layered graphene (FLG)/ silver nanoparticles (Ag NPs) nanoarchitecture have been investigated. FLG and silver nanoparticles (Ag NPs) enhance the LPG gas sensing characteristics by collectively involving in the electronic transportation and diffusion mechanisms. FLG, Ag and FLG/ Silver nanocomposites are developed by ultra-sonication assisted method, and the effect of flexibility on gas sensing performance was thoroughly examined. The sensing materials as thin films are developed via drop-casting technique on photo lithography patterned flexible interdigitated electrodes (IDEs). The gas sensing characteristics of the prepared sensor are studied for LPG and other analytes at room temperature. The maximum response is observed for FLG/Ag nanocomposite to 100 ppm LPG at room temperature. FLG/Ag nanocomposite sensor demonstrates rapid response, high selectivity, reproducibility and good stability over a period of 30 days. Further the durability and flexibility tests conducted for the FLG/Ag hybrid sensor at bending angles reveal 78% stability even after 15 days of sensing studies.



中文翻译:

基于少层石墨烯/银纳米复合材料的柔性电阻式液化石油气传感器

已经研究了混合少层石墨烯(FLG)/银纳米颗粒(Ag NPs)纳米结构的LPG气体传感特性。FLG 和银纳米粒子 (Ag NPs) 通过共同参与电子传输和扩散机制来增强 LPG 气体传感特性。FLG、Ag和FLG/银纳米复合材料是通过超声辅助方法开发的,并彻底检查了柔韧性对气敏性能的影响。作为薄膜的传感材料是通过在光刻图案化柔性叉指电极 (IDE) 上的滴铸技术开发的。研究了制备的传感器在室温下对液化石油气和其他分析物的气敏特性。在室温下观察到 FLG/Ag 纳米复合材料对 100 ppm LPG 的最大响应。FLG/Ag 纳米复合传感器在 30 天内表现出快速响应、高选择性、重现性和良好的稳定性。此外,在弯曲角度对 FLG/Ag 混合传感器进行的耐久性和柔韧性测试表明,即使经过 15 天的传感研究,其稳定性仍为 78%。

更新日期:2021-09-10
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