Impedimetric detection of 2,4,6-trinitrotoluene using surface-functionalized halloysite nanotubes.

ABSTRACT: Herein, we report the application of amine-surface-functionalized halloysite nanotubes (HAs) as active materials for the quantitative detection of 2,4,6-trinitrotoluene (TNT). The findings indicated that HA could selectively capture TNT via a strong reaction between the amine groups on its surface and the TNT molecules. Plate electrodes were fabricated from HA to evaluate its TNT-sensing capacity by electrochemical impedance spectroscopy. Upon binding with TNT, the proton conductivity on the HA plate electrodes increased linearly with the TNT concentration from 1.0 × 10^-11 M to 1.0 × 10^-4 M. The HA plate electrodes exhibited good sensitivity with a detection limit of 1.05 × 10^-12 M. Subsequently, the cycling measurements of the TNT binding/removal we

SUBMITTER: Pattaweepaiboon S 

PROVIDER: S-EPMC9201510 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature