Biosynthesis of Ag@CuO core–shell nanostructures for non-enzymatic glucose sensing using screen-printed electrode
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Ag@CuO core shell nanostructures (ACCS NSs) was successfully synthesized using Ocimum tenuiflorum leaf extract when applied for non-enzymatic glucose sensor. SEM, HR-TEM, XRD, UV–vis, and FTIR were used to estimate the structural, optical and morphological properties of ACCS NSs. Cyclic voltammetry and ampherometry were used to determine the electrochemical and electrocatalytic characteristics of 0.2 wt% ACCS NSs with screen-printed electrodes (SPEs) to sense glucose in 0.1 M NaOH solution. Optimum potential was obtained at + 0.4 V of current response with a linear range of 1 to 9.2 mM. In addition, 0.2 wt% ACCS NSs with SPEs had a low detection limit of 0.006 μM and sensitivity of 3763.44 μA mM−1 cm−2. Modified ACCS/SPE electrodes were highly selective for glucose in the presence of chlorine ions, sugars and non-sugar compounds. It could be inferred from the evidence that the ACCS NSs performs effectively in the aspect of non-enzymatic glucose sensing.
Dayakar Thatikayala acknowledge the fund support of Rajiv Gandhi National Fellowship (RGNF) (F1-17.1/2013-14/RGNF-2013-14-SC-AND-41054), University grant commission (UGC), Government of India and acknowledge the center for nanoscience and technology, IST, JNTUH, Hyderabad, Telangana, India for providing lab and instrument facility.
- 11.S. Marini, C. Espro, A. Bonavita, S. Galvagno, G. Ne, In-situ grown flower-like nanostructured CuO on screen printed carbon electrodes for non-enzymatic amperometric sensing of glucose. Microchim. Acta 184, 7 (2017)Google Scholar
- 12.D.V.H. Thien, H.T. Toan, T.T.B. Quyen, N.M. Tri, Electrospun CuO/Ag nanofibers for nonenzymatic glucose sensors. Can Tho Univ. J. Sci. 6(2017), 63–68 (2017)Google Scholar
- 27.H.B. Premkumar, B.S. Ravikumar, D.V. Sunith, H. Nagabushana, S.C. Sharma, S.M. Bhat, B.M. Nagabhushana, R.P.S. Chakradhar, M.B. Savitha, Investigation of structural and luminescence properties of Ho3+ doped YAlO3 nanophosphors synthesized through solution combustion route. Spectrochim. Acta Part A 115, 234–243 (2013)CrossRefGoogle Scholar
- 30.A. Asha Radhakrishnan, B. Baskaran Beena, Effect of synthesis time on structural, optical and electrical properties of CuO nanoparticles synthesized by reflux condensation method. Indian J. Adv. Chem. Sci 2, 158–161 (2014)Google Scholar
- 36.Z. Jin, P. Li, B. Zheng, H. Yuan, D. Xiao, CuO–Ag2O nanoparticles grown on a AgCuZn alloy substrate in situ for use as a highly sensitive non-enzymatic glucose sensor. Talanta 80, 1371–1377 (2014)Google Scholar
- 46.C.Q. Dong, H. Zhong, T.Y. Kou, J. Frenzel, G. Eggeler, Z.H. Zhang, Three-dimensional Cu foam-supported single crystalline mesoporous Cu2O nanothorn arrays for ultra-highly sensitive and efficient nonenzymatic detection of glucose. ACS Appl. Mater. Interfaces 7, 20215–20223 (2015)CrossRefGoogle Scholar