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Vol. 29 No. 1 (2017): Vol 29 Issue 1

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Modification Strategy of Screen-Printed Carbon Electrode with Functionalized Multi-Walled Carbon Nanotube and Chitosan Matrix for Biosensor Development

https://doi.org/10.14233/ajchem.2017.20104
Farah Asilah Azri1
1Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 2Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 3Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Malaysia *Corresponding author: E-mail: rashidah@upm.edu.my
Rashidah Sukor1
1Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 2Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 3Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Malaysia *Corresponding author: E-mail: rashidah@upm.edu.my
Reza Hajian2
1Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 2Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 3Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Malaysia *Corresponding author: E-mail: rashidah@upm.edu.my
Nor Azah Yusof2
1Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 2Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 3Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Malaysia *Corresponding author: E-mail: rashidah@upm.edu.my
Fatimah Abu Bakar1
1Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 2Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 3Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Malaysia *Corresponding author: E-mail: rashidah@upm.edu.my
Jinap Selamat1
1Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 2Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia 3Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Malaysia *Corresponding author: E-mail: rashidah@upm.edu.my

Asian Journal of Chemistry, Vol. 29 No. 1 (2017): Vol 29 Issue 1

Abstract

Biosensor is a rapid technique to determine the analyte based on the incorporation of bioactive materials with physio-chemical transducing element. In this work, multi-walled carbon nanotube (MWCNT) was functionalized with carboxylic groups and mixed with chitosan (CS) prior to drop casting on screen-printed carbon electrode (SPCE). The acid treatment of multi-walled carbon nanotube by using mixture of H2SO4 and HNO3 in 3:2 ratio was better compared to treatment by piranha solution, in terms of carboxylic group attachment and capacitance effect on the current response. The functionalized carbon nanotubes were characterized by using fourier transform infrared spectroscopy, field emission scanning electron microscopy and cyclic voltammetry analysis. Few modification parameters have been optimized to maximize the performance of working electrode including ratio of MWCNT:CS, coating volume and drying method. The addition of MWCNT/CS matrix on the screen-printed carbon electrode greatly enhanced the electron transfer rate and increased the electrode active surface area for further immobilization of bioactive components.

Keywords

Screen-printed carbon electrode Multi-walled carbon nanotube Chitosan Biosensor.
Asilah Azri1, F., Sukor1, R., Hajian2, R., Azah Yusof2, N., Abu Bakar1, F., & Selamat1, J. (2016). Modification Strategy of Screen-Printed Carbon Electrode with Functionalized Multi-Walled Carbon Nanotube and Chitosan Matrix for Biosensor Development. Asian Journal of Chemistry, 29(1), 31–36. https://doi.org/10.14233/ajchem.2017.20104
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