Acetone vapor sensing characteristics of Cr-doped ZnO nanofibers

Document Type

Article

Publication Title

Cogent Engineering

Abstract

Various amounts of chromium (Cr) were added to zinc oxide (ZnO) nanofibers (NFs) by electrospinning (ES), and pyrolysis was performed at 600 °C to form pure and Cr-doped ZnO NFs. The morphology, structure and optical properties of the NFs were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) and ultraviolet-visible spectroscopy (UV-Vis). It was found that the structure of the NFs became rougher, and the diameter decreased with the increase of the Cr content. The maximum diameter of 150 nm was observed for 4 w% Cr-doped ZnO NFs. The bandgap energy decreased as the doping concentration increased. The gas-sensing properties of the Cr-doped ZnO NFs were investigated by measuring their response to acetone vapor. The results indicate that among all the samples, the 4 w% Cr-doped ZnO NFs exhibited the best sensing response to acetone vapor, with a response of 88.65–50 ppm acetone vapor. The response and recovery times were approximately 80 s and 55 s, respectively. Further, the Cr-doped electrospun NFs showed exceptional selectivity and stability, indicating their potential for high-performance gas sensor fabrication. This work reports an intriguing cost-effective lab designed gas sensor to investigate the sensing properties of pure and Cr-doped ZnO NFs.

DOI

10.1080/23311916.2024.2311090

Publication Date

1-1-2024

This document is currently not available here.

Share

COinS