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Dayakar, T.,Venkateswara Rao, K.,Park, Jinsub,Sadasivuni, Kishor Kumar,Ramachandra Rao, K.,Jaya rambabu, N. Elsevier 2018 Materials chemistry and physics Vol.216 No.-
<P><B>Abstract</B></P> <P>An enzyme-free glucose sensor developed based on silver nanoparticles (Ag NPs) via bio-mediated route using <I>Ocimum tenuiflorum</I> leaves extract. The Ag NPs were characterized by X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Particle size analyzer (PSA), Scanning electron microscopy (SEM), Energy-dispersive X-ray (EDAX) spectroscopy, and Transmission electron microscopy (TEM), to study structural, optical and morphological properties. The electrocatalytic activity of Ag NPs towards the oxidation of glucose in the 0.1 M NaOH electrolyte solution was analyzed. The Ag NPs was coated on Glassy carbon electrode (GCE) and reports indicating the outstanding capability such as high sensitivity (895.8 μAmM<SUP>−1</SUP>cm<SUP>−2</SUP>), linear range (1–8.9 mM), response time (<4s), low detection limit (0.0048 μM, S/N = 3), long-term stability, reproducibility, repeatability, and selectivity of the sensor. Therefore, the bio-synthesized Ag NPs can markedly helpful to fabricate non-enzymatic, sustainable, simple, low cost, and eco-friendly glucose monitoring devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ocimum tenuiflorum leaf extract and silver nitrate were used to prepare Ag NPs. </LI> <LI> Structural, optical and morphological properties of Ag NPs were studied. </LI> <LI> The GCE modified with Ag NPs showed a sensitivity of 895.8 μAmM<SUP>−1</SUP>cm<SUP>−2</SUP>. </LI> <LI> Bio-mediated synthesized NPs showed sustainable glucose sensing properties. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>