Next Article in Journal
Improving the Power Conversion Efficiency of Carbon Quantum Dot-Sensitized Solar Cells by Growing the Dots on a TiO2 Photoanode In Situ
Previous Article in Journal
Heteromer Nanostars by Spontaneous Self-Assembly
Article

The Development of Non-Enzymatic Glucose Biosensors Based on Electrochemically Prepared Polypyrrole–Chitosan–Titanium Dioxide Nanocomposite Films

1
Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
2
Department of Chemistry, College of Science, Al-Mustansiriya University, Baghdad 10052, Iraq
3
Department of Chemistry, Faculty of Science, University Putra Malaysia, Serdang 43400, Malaysia
4
Institute of Tropical Forestry and Forest Products (INTROP), University Putra Malaysia, Serdang 43400, Malaysia
*
Authors to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Nanomaterials 2017, 7(6), 129; https://doi.org/10.3390/nano7060129
Received: 26 March 2017 / Revised: 21 May 2017 / Accepted: 22 May 2017 / Published: 31 May 2017
The performance of a modified electrode of nanocomposite films consisting of polypyrrole–chitosan–titanium dioxide (Ppy-CS-TiO2) has been explored for the developing a non-enzymatic glucose biosensors. The synergy effect of TiO2 nanoparticles (NPs) and conducting polymer on the current responses of the electrode resulted in greater sensitivity. The incorporation of TiO2 NPs in the nanocomposite films was confirmed by X-ray photoelectron spectroscopy (XPS) spectra. FE-SEM and HR-TEM provided more evidence for the presence of TiO2 in the Ppy-CS structure. Glucose biosensing properties were determined by amperommetry and cyclic voltammetry (CV). The interfacial properties of nanocomposite electrodes were studied by electrochemical impedance spectroscopy (EIS). The developed biosensors showed good sensitivity over a linear range of 1–14 mM with a detection limit of 614 μM for glucose. The modified electrode with Ppy-CS nanocomposite also exhibited good selectivity and long-term stability with no interference effect. The Ppy-CS-TiO2 nanocomposites films presented high electron transfer kinetics. This work shows the role of nanomaterials in electrochemical biosensors and describes the process of their homogeneous distribution in composite films by a one-step electrochemical process, where all components are taken in a single solution in the electrochemical cell. View Full-Text
Keywords: nanomaterials; non-enzymatic glucose biosensors; nanocomposites; electrodeposition; titanium dioxide nanocomposite; X-ray photoelectron spectroscopy (XPS); electrochemical impedance spectroscopy (EIS) nanomaterials; non-enzymatic glucose biosensors; nanocomposites; electrodeposition; titanium dioxide nanocomposite; X-ray photoelectron spectroscopy (XPS); electrochemical impedance spectroscopy (EIS)
Show Figures

Graphical abstract

MDPI and ACS Style

AL-Mokaram, A.M.A.A.A.; Yahya, R.; Abdi, M.M.; Mahmud, H.N.M.E. The Development of Non-Enzymatic Glucose Biosensors Based on Electrochemically Prepared Polypyrrole–Chitosan–Titanium Dioxide Nanocomposite Films. Nanomaterials 2017, 7, 129. https://doi.org/10.3390/nano7060129

AMA Style

AL-Mokaram AMAAA, Yahya R, Abdi MM, Mahmud HNME. The Development of Non-Enzymatic Glucose Biosensors Based on Electrochemically Prepared Polypyrrole–Chitosan–Titanium Dioxide Nanocomposite Films. Nanomaterials. 2017; 7(6):129. https://doi.org/10.3390/nano7060129

Chicago/Turabian Style

AL-Mokaram, Ali M.A.A.A., Rosiyah Yahya, Mahnaz M. Abdi, and Habibun N.M.E. Mahmud 2017. "The Development of Non-Enzymatic Glucose Biosensors Based on Electrochemically Prepared Polypyrrole–Chitosan–Titanium Dioxide Nanocomposite Films" Nanomaterials 7, no. 6: 129. https://doi.org/10.3390/nano7060129

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop