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BackgroundThe combination of Au-metallic-NPs and CNTs are a new class of hybrid nanomaterials for the development of electrochemical biosensor. Concentration of Au (nanoparticles [NPs]) in the electrochemical biosensor is crucial for the efficient charge transfer between the Au-NPs-MWCNTs modified electrode and electrolytic solution.MethodsIn this work, the charge transfer kinetics in the glassy carbon electrode (GCE) modified with Au (NPs)–multiwalled carbon nanotube (MWCNT) nanohybrid with varied concentrations of Au (NPs) in the range 40–100 nM was studied using electrochemical impedance spectroscopy (EIS). Field emission scanning electron microscopy and transmission electron microscopy confirmed the attachment of Au (NPs) on the surface of MWCNTs.ResultsThe cyclic voltammetry and EIS results showed that the charge transfer mechanism was diffusion controlled and the rate of charge …
Dove Press
Publication date: 
1 Jan 2018

Shahid Mehmood, Regina Ciancio, Elvio Carlino, Arshad S Bhatti

Biblio References: 
Volume: 13 Pages: 2093
International journal of nanomedicine