石墨烯
纳米花
材料科学
氨
氨气
制作
导电体
纳米结构
化学工程
热液循环
基质(水族馆)
纳米技术
光电子学
复合材料
化学
病理
有机化学
工程类
地质学
海洋学
替代医学
医学
作者
J. Mohanraj,D. Durgalakshmi,R. Ajay Rakkesh,Balakumar Subramaniam
标识
DOI:10.1016/j.snb.2021.130833
摘要
In this work, we have grown ZnO/CuO nanoflowers on graphene printed paper substrates by the hydrothermal method. The hypothesis of the present work is the role of ZnO and CuO composited graphene structures as affordable substrates for room temperature ammonia gas sensor. To fabricate the conductive substrate, the biomass derived graphene has been formulated as conductive ink and printed (20 µm) on the paper substrate. The optical, structural, and morphological studies confirm the formation of hierarchical nanoflower like ZnO/[email protected] substrate. The chemiresistive gas sensor studies evident that, the ZnO/[email protected] substrates have higher sensing performance in the presence of ammonia (4.9%) for the concentration as low as 5 ppm at room temperature. It also shows a quick response and recovery time of 4.1 s and 2 s, respectively. Our present method will be an effective methodology for the fabrication of cost-effective and rapid detection of ammonia gas in the ambient environment and can be also further suitable for non-invasive earlier diagnosis of diseases from exhaled breath.
科研通智能强力驱动
Strongly Powered by AbleSci AI