Effect of MWCNT dispersion parameters on the performance of electrochemical sensors. (December 2021)

• Record Type: Journal Article
• Authors: Anurag, Adiraju; Niu, Shuo; Kanoun, Olfa
• Is Part Of: Measurement. Volume 18(2021)
• Publication Date: 2021-12
• Subjects: MWCNTs -- Redox couple -- Sonication time -- Solvent -- Concentrations; Detectors -- Periodicals; Measurement -- Periodicals; 530.7
• DOI: 10.1016/j.measen.2021.100335
• Languages: English
• ISSNs: 2665-9174

Abstract

Abstract: The use of Multiwalled carbon nanotubes (MWCNTs) as surface modification material for electrochemical sensors is gaining importance. Thereby, the performance of the MWCNT modified sensors is dependent on the preparation parameters of the MWCNT dispersion, which should ensure a good homogeneity, an increased surface area and an enhancement of electrocatalytic activity. In this study, we investigate the performance of commercial screen-printed electrodes modified with MWCNTS by varying the sonication time, solvent type and concentrations. The performance of the modified electrodes is investigated by using a standard redox couple and the best parameters are determined. The results show that using isopropanol as solvent with a MWCNT concentration of 0.05% treated for 90 minutes by sonication leads to the best performance.