Journal
BIOSENSORS & BIOELECTRONICS
Volume 111, Issue -, Pages 166-173Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2018.03.063
Keywords
Ocimum tenuiflorum; Core shell nanostructure; Electro catalytic activity and Non-enzymatic glucose sensor
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Funding
- University Grant Commission (UGC), Government of India [F1- 17.1/2013-14/RGNF-2013-14-SC -AND-41054]
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We fabricated a fourth generation glucose biosensor using CeO2@CuO core shell nano structure (CeCCS NSs). A simple leave extract of Ocimum tenuiflorum was used to prepare different wt% of 0.2, 04, 0.6, and 0.8 CuO (shell), above 1 wt% of CeO2 (core). The successful formation was confirmed by various characterization techniques like XRD, UvVis, FTIR, SEM and HR-TEM. In the biosensor, 0.4 wt% of CeCCS NSs has shown efficient properties due to its high surface area. The good conductivity and high catalytic activity towards glucose sensing properties were estimated by screen-printed electrode (SPE). The ampherometric studies of CeCCS/SPE modified electrode have been optimized at potential + 0.4 V, showed a sensitivity of 3319.83 mu Am M-1 cm(-2) within detection limit of 0.019 mu M. More significantly, modified electrodes performed excellently against anti-interference and anti-poisoned activity in glucose sample and exhibited promising results for the sustainable improvement for non-enzymatic sensing applications.
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