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Comparative Analysis of Single-Walled and Multi-Walled Carbon Nanotubes for Electrochemical Sensing of Glucose on Gold Printed Circuit Boards

Comparative Analysis of Single-Walled and Multi-Walled Carbon Nanotubes for Electrochemical Sensing of Glucose on Gold Printed Circuit Boards

Ruby Alhans, Anukriti Singh, Chaitali Singhal, Jagriti Narang, Shikha Wadhwa, Ashish Mathur

Mater Sci Eng C Mater Biol Appl. 2018 Sep 1;90:273-279.

PMID: 29853092

Abstract:

In the present work, a comparative study was performed between single-walled carbon nanotubes and multi-walled carbon nanotubes coated gold printed circuit board electrodes for glucose detection. Various characterization techniques were demonstrated in order to compare the modified electrodes viz. cyclic voltammetry, electrochemical impedance spectroscopy and chrono-amperometry. Results revealed that single-walled carbon nanotubes outperformed multi-walled carbon nanotubes and proved to be a better sensing interface for glucose detection. The single-walled carbon nanotubes coated gold printed circuit board electrodes showed a wide linear sensing range (1 mM to 100 mM) with detection limit of 0.1 mM with response time of 5 s while multi-walled carbon nanotubes coated printed circuit board gold electrodes showed linear sensing range (1 mM to 100 mM) with detection limit of 0.1 mM with response time of 5 s. This work provided low cost sensors with enhanced sensitivity, fast response time and reliable results for glucose detection which increased the affordability of such tests in remote areas. In addition, the comparative results confirmed that single-walled carbon nanotubes modified electrodes can be exploited for better amplification signal as compared to multi-walled carbon nanotubes.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP308068566-A	Carbon nanotube, multi-walled		308068-56-6	Price

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