期刊
MATERIALS TODAY COMMUNICATIONS
卷 28, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtcomm.2021.102739
关键词
Nanosensors; Carbon nanotubes; Heteronanotubes; Thermoelectric; Nanoelectronics; Boron nitride
资金
- UKRI [MR/S015329/2]
- Iraqi Ministry of Higher Education and Scientific Research
- University of Sumer
Covalently bonded carbon and boron nitride heteronanotubes can selectively sense trinitrotoluene and triacetone triperoxide. By creating and tuning energy band gaps in the heteronanotubes, new resonances are formed for detection purposes. The presence of different compounds leads to specific Seebeck coefficients, enabling the selective sensing of these species.
The detection of reactive compounds represents a significant challenge. Here we demonstrate that heteronanotubes formed by covalently bonded carbon (CNT) and boron nitride (BN) nanotubes can be used to selectively sense trinitrotoluene (TNT) and triacetone triperoxide (TATP). We show that the energy band gap can be created and tuned in carbon/boron nitride (C/BN) heteronanotubes. Once TNT or TATP is physisorbed on C/BN heteronanotubes, new resonances are formed within the energy gap of heteronanotubes. Crucially, transport resonances associated with TNT are formed above the Fermi level and are due to nitro group whereas TATP resonances happen to be below the Fermi level. Consequently, a negative Seebeck coefficient is expected for C/ BN heteronanotubes devices in the presence of TNT in contrast to a positive Seebeck coefficient in the presence of TATP. This can be used for selective sensing of these species.
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