Issue 51, 2015

Graphene oxide/polystyrene composite nanofibers on quartz crystal microbalance electrode for the ammonia detection

Abstract

A nanostructured complex, graphene oxide (G-COOH)/polystyrene (PS) nanofiber, was fabricated as a novel sensing material coated on a quartz crystal microbalance (QCM) to realize ammonia detection in this study. Nanoporous G-COOH/PS nanofibers with an average diameter of 569 nm were fabricated via electrospinning; the fibers were composed of ultrathin nanowires with a primary diameter of 37 nm. This unique structure presented a large surface active region, making the fibers an optimal candidate for gas-sensing applications. The physical and chemical properties of the G-COOH/PS nanofibers were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), N2 physical adsorption, Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The results indicated that the G-COOH/PS composite nanofibers had a mesoporous structure and that G-COOH sheets were randomly dispersed in the nanofibers. A gas-sensing test showed that the G-COOH/PS nanofibers, when incorporated into a QCM sensor system, exhibited good and desirable sensing behavior, including high sensitivity, fast response and good reversibility, making them a promising candidate as an ammonia detector.

Graphical abstract: Graphene oxide/polystyrene composite nanofibers on quartz crystal microbalance electrode for the ammonia detection

Article information

Article type
Paper
Submitted
19 Mar 2015
Accepted
29 Apr 2015
First published
29 Apr 2015

RSC Adv., 2015,5, 40620-40627

Graphene oxide/polystyrene composite nanofibers on quartz crystal microbalance electrode for the ammonia detection

Y. Jia, L. Chen, H. Yu, Y. Zhang and F. Dong, RSC Adv., 2015, 5, 40620 DOI: 10.1039/C5RA04890G

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