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https://idr.l2.nitk.ac.in/jspui/handle/123456789/12155
Title: | Multi-wall carbon nanotube-NiO nanoparticle composite as enzyme-free electrochemical glucose sensor |
Authors: | Prasad, R. Bhat, B.R. |
Issue Date: | 2015 |
Citation: | Sensors and Actuators, B: Chemical, 2015, Vol.220, , pp.81-90 |
Abstract: | We report a simple, solvent-free method to decorate multi-walled carbon nanotubes (MWCNTs) with nickel oxide nanoparticles (NiO-NPs). The as prepared NiO-MWCNT composite were characterised by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. The enzyme-free modified carbon paste electrode (CPE) was fabricated using as-synthesised composite material and investigated for glucose sensing. The 10% NiO-MWCNTs composites sensor showed excellent electro-catalytic activity towards direct glucose oxidation. The sensitivity of this sensor is found to be 1696 ?A mM-1 cm-2 and 122.1 ?A mM-1 cm-2 and the limit of detection (LOD) was found to be 11.04 nM and 31 ?M for the linear response over glucose concentration ranging from 1-200 ?M to 0.5-9.0 mM, respectively. Furthermore, the 10% NiO-MWCNTs sensor also showed excellent anti-interference ability, high stability and good reproducibility. Hence, due to simple method of material preparation, easy sensor fabrication and excellent electro catalytic activity towards glucose oxidation, the 10% NiO-MWCNT/CPE is a potential material for the development of enzyme-free sensor for reliable glucose determination. 2015 Elsevier B.V. All rights reserved. |
URI: | http://idr.nitk.ac.in/jspui/handle/123456789/12155 |
Appears in Collections: | 1. Journal Articles |
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