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Nano CuO: Electrochemical sensor for the determination of paracetamol and d-glucose.

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Title: Nano CuO: Electrochemical sensor for the determination of paracetamol and d-glucose.
Authors: Avinash, B.1 (AUTHOR), Ravikumar, C.R.1 (AUTHOR) ravicr128@gmail.com, Kumar, M.R. Anil1 (AUTHOR), Nagaswarupa, H.P.1 (AUTHOR), Santosh, M.S.1,2 (AUTHOR) santoshgulwadi@gmail.com, Bhatt, Aarti S.3 (AUTHOR), Kuznetsov, Denis4 (AUTHOR)
Source: Journal of Physics & Chemistry of Solids. Nov2019, Vol. 134, p193-200. 8p.
Subjects: Electrochemical sensors, Glucose, Glucose analysis, Reduction potential, X-ray powder diffraction, Carbon electrodes, Cyclic voltammetry
Abstract: A green combustion method using Aloe vera latex as a fuel was employed to synthesize nanocrystalline cupric oxide (CuO). The nanocrystalline nature and phase of CuO was confirmed by powder X-ray diffraction. Applying the Kubelka–Monk function to diffuse reflectance spectra showed the band gap of CuO to be 1.632 eV. Paracetamol and d -glucose in 1 M KOH solution were sensed using a carbon paste electrode modified using CuO nanoparticles (NPs). The cyclic voltammetry results suggest that CuO NPs possess superior electrochemical properties due to a lower value of the difference between oxidation and reduction potential (E O -E R). The proton diffusion coefficient for CuO electrode material was1.5047 × 10−5cm2s−1. Electrochemical impedance and Bode studies confirmed that the charge-transfer resistance value of CuO NPs was on the lower side due to the phase angle (55°) being near to ф = ᴨ/2. The electrochemical behavior indicates that CuO is a promising electrode material for sensing molecules such as paracetamol and glucose. • Nano CuO sample issynthesizedbya novel green combustion method. • Cyclic voltammetry is used to sense paracetamol and d -glucose. • CuO nanoparticles possess superior electrochemical properties. • The proposed sensor reveals a high sensitivity for paracetamol and d -glucose. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:A green combustion method using Aloe vera latex as a fuel was employed to synthesize nanocrystalline cupric oxide (CuO). The nanocrystalline nature and phase of CuO was confirmed by powder X-ray diffraction. Applying the Kubelka–Monk function to diffuse reflectance spectra showed the band gap of CuO to be 1.632 eV. Paracetamol and d -glucose in 1 M KOH solution were sensed using a carbon paste electrode modified using CuO nanoparticles (NPs). The cyclic voltammetry results suggest that CuO NPs possess superior electrochemical properties due to a lower value of the difference between oxidation and reduction potential (E O -E R). The proton diffusion coefficient for CuO electrode material was1.5047 × 10−5cm2s−1. Electrochemical impedance and Bode studies confirmed that the charge-transfer resistance value of CuO NPs was on the lower side due to the phase angle (55°) being near to ф = ᴨ/2. The electrochemical behavior indicates that CuO is a promising electrode material for sensing molecules such as paracetamol and glucose. • Nano CuO sample issynthesizedbya novel green combustion method. • Cyclic voltammetry is used to sense paracetamol and d -glucose. • CuO nanoparticles possess superior electrochemical properties. • The proposed sensor reveals a high sensitivity for paracetamol and d -glucose. [ABSTRACT FROM AUTHOR]
ISSN:00223697
DOI:10.1016/j.jpcs.2019.06.012