Amperometric non-enzymatic bimetallic glucose sensor based on platinum tellurium microtubes modified electrode

A non-enzymatic amperometric sensor for glucose detection based on a Pt electrode modified with Te microtubes (Te-MTs), by direct drop casting of Te-MTs dispersed in ethanol, is proposed. The spectroscopic characterization of as synthesized Te-MTs and Pt/Te-MTs modified electrodes was performed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Moreover electrochemical characterization of Pt/Te-MTs modified electrodes was performed by Cyclic Voltammetry (CV) and Cronoamperometry (CA) in phosphate buffer (pH = 7 I = 0.2). Electrochemical results indicate that the proposed sensor exhibits very strong and sensitive amperometric responses to glucose and explains a good anti-interference ability.

► Development and characterization of a bimetallic non-enzymatic sensors for amperometric glucose detection a neutral pH. ► Tellurium microtubes is a new micro-structured promising material for amperometric sensor applications. ► Bimetallic glucose sensors may be a valid alternative among devices employed for glucose detection. ► SEM and XPS are valid techniques for spectroscopic characterization.