Electrospun CNT embedded ZnO nanofiber based biosensor for electrochemical detection of Atrazine: a step closure to single molecule detection

Supraja, Patta and Vanjari, Siva Rama Krishna and Singh, Shiv Govind and et al, . (2020) Electrospun CNT embedded ZnO nanofiber based biosensor for electrochemical detection of Atrazine: a step closure to single molecule detection. Microsystems & Nanoengineering, 6 (1). ISSN 2055-7434

Full text not available from this repository. (Request a copy)

Abstract

In this study we have reported the design and development of a facile, sensitive, selective, and label-free electrochemical sensing platform for the detection of atrazine based on MWCNT-embedded ZnO nanofibers. Electrospun nanofibers were characterized using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), UV-Visible spectroscope (UV-VIS), and Fourier-transform infrared spectroscope (FTIR). Electrochemical properties of MWCNT-ZnO nanofiber-modified electrodes were assessed using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Binding event of atrazine to anti-atrazine antibody, which immobilized on nanofiber-modified electrode via EDC and NHS chemistry, was transduced with EIS. Due to high conductivity, surface area, and low bandgap of MWCNT-ZnO nanofibers, we have achieved the sensitivity and limit of detection (LoD) of sensor as 21.61 (KΩ μg−1 mL−1) cm−2 and 5.368 zM for a wide detection range of 10 zM–1 µM. The proposed immunosensing platform has good stability, selectivity, repeatability, and reproducibility, and are less prone to interference.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Vanjari, Siva Rama KrishnaUNSPECIFIED
Singh, Shiv Govindhttp://orcid.org/0000-0001-7319-879X
Item Type: Article
Uncontrolled Keywords: Indexed in Scopus
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 20 Jan 2020 04:31
Last Modified: 20 Jan 2020 04:31
URI: http://raiith.iith.ac.in/id/eprint/7350
Publisher URL: http://doi.org/10.1038/s41378-019-0115-9
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 7350 Statistics for this ePrint Item