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Electrochemical Behaviour of Silver Nanoparticle-MWCNTs Hybrid Nanostructures Synthesized via a Simple Method

2016; Elsevier BV; Volume: 11; Issue: 1 Linguagem: Inglês

10.1016/s1452-3981(23)15880-9

1452-3981

Sneha Mohan, Fredrick Okumu, Oluwatobi S. Oluwafemi, Mangaka C. Matoetoe, Omotayo A. Arotiba,

Conducting polymers and applications

As the synthesis via completely green method is emerging, determination of the electrochemistry properties of the as-synthesized nanomaterials has become an important aspect of research. We herein investigate for the first time the inherent electrochemistry of silver nanoparticle modified multiwall carbon nanotubes (Ag NPs-MWCNTs) hybrid nanocomposites that was synthesized via a simple method using cyclic voltammetry (CV) as a diagnostic technique. The result obtained was compared with multiwall carbon nanotubes (MWCNTs), acid functionalized MWCNTs (MWCNT-COOH) and as-synthesized silver nanoparticle (Ag NPs) modified on the glassy carbon electrode (GCE). A detailed analysis of the cyclic voltammograms gave fundamental electrochemical parameters including the transfer coefficient (α) and the diffusion coefficient (D). The transfer coefficient for the Ag NPs- MWCNTs/GCE was found to be greater than that of MWCNTs/GCE while the diffusion coefficient of Ag-NPs-MWCNTs/GCE was calculated to be 5.11 ×10-5 cm2 s-1 which is higher than both pristine MWCNTs/GCE and MWCNT-COOH/GCE.