Yttria-modified titania-CNTs composite as an electrochemical biosensor for lysine. | [Journal of Chemical Society of Pakistan • 2013]

Author(s):

1. Muneeb-Ur-Rehman: Kohat University of Science and Technology, Kohat, Pakistan

2. Massod Ahmad Khan Bangash: Kohat University of Science and Technology, Kohat, Pakistan

3. Nisar Ahmad: Nano Science and Catalysis Division, National Centre for Physics, Quaid-i-Azam University, Islamabad, Pakistan

4. Syed Mustansar Abbas: Nano Science and Catalysis Division, National Centre for Physics, Quaid-i-Azam University, Islamabad, Pakistan

5. Syed Tajammul Hussain: Nano Science and Catalysis Division, National Centre for Physics, Quaid-i-Azam University, Islamabad, Pakistan

Abstract:

A composite of carbon nanotubes with yttrium modified titania particles (Y/TiO2-CNT) is synthesized and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and Fourier transform infrared spectroscopy (FTIR). The electrochemical behavior of amino group (Lysine) is investigated by cyclic voltammetery (CV). The response mechanism of the synthesized biosensor is proposed to be the combination of electrostatic and electrical interactions of CNTs with amino group. Excellent sensitivity, repeatability, stability, selectivity and recovery for the potentiometric determination of Lysine in the range of 5mM to 25mM concentrations are obtained.

Page(s): 605-611

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 35, Issue: 3, Year: 2013

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