期刊
NANOSCALE
卷 5, 期 12, 页码 5426-5434出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr00747b
关键词
-
类别
资金
- Nebraska Public Power District through the Nebraska Center for Energy Sciences Research [12-00-13]
- NSF through Nebraska MRSEC [DMR-0820521]
- EPSCoR [EPS-1004094]
- NSF [ECCS-0925837]
- Russian Ministry of Education and Science [14.B37.21.1076]
- EPSCoR [1004094] Funding Source: National Science Foundation
- Office Of The Director [1004094] Funding Source: National Science Foundation
The electrical properties of reduced graphene oxide (rGO) have been previously shown to be very sensitive to surface adsorbates, thus making rGO a very promising platform for highly sensitive gas sensors. However, poor selectivity of rGO-based gas sensors remains a major problem for their practical use. In this paper, we address the selectivity problem by employing an array of rGO-based integrated sensors instead of focusing on the performance of a single sensing element. Each rGO-based device in such an array has a unique sensor response due to the irregular structure of rGO films at different levels of organization, ranging from nanoscale to macroscale. The resulting rGO-based gas sensing system could reliably recognize analytes of nearly the same chemical nature. In our experiments rGO-based sensor arrays demonstrated a high selectivity that was sufficient to discriminate between different alcohols, such as methanol, ethanol and isopropanol, at a 100% success rate. We also discuss a possible sensing mechanism that provides the basis for analyte differentiation.
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