期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 6, 页码 5687-5697出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c00896
关键词
ammonia; nanofiber; MEMS; QCM; acid doping; gas sensor; chemical sensor
资金
- Ministry of Research, Technology, and Higher Education of the Republic of Indonesia (RISTEKDIKTI) through a research scheme of Penelitian Terapan (PT) 2020
- Lower Saxony Ministry for Science and Culture (N-MWK), Germany
- RISTEKDIKTI [337/RISET-Pro/FGS/VIII/2016, 345/RISETPro/FGS/VIII/2016, 342/RISET-Pro/FGS/VIII/2016]
We fabricated highly sensitive and selective ammonia gas sensors based on quartz crystal microbalance (QCM) platforms that were functionalized with electrospun polyvinyl acetate (PVAc) nanofibers and doped with various organic acids (i.e., oxalic, tartaric, and citric acids). The structural and chemical surface conditions of the nanofiber-based active layers on top of the QCMs were confirmed by scanning electron microscopy (SEM), atomic force microscopy (AFM), and Fourier-transform infrared (FTIR) spectroscopy. The sensitivity of the PVAc nanofiber-based QCM sensor doped with citric acid was found to be the highest (2.95 Hz/ppm) among others with a limit of detection (LOD) of down to the sub-ppm level (550 ppb). It also exhibited good selectivity, rapid response, short recovery time, and decent repeatability. This simple yet low-cost alternative solution based on chemical modification of nanofibers could improve the performance of QCM-based ammonia gas sensors in many areas including for smart electronic nose applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据