Growth of ZnO NanoFlakes on Flexible Carbon Based Transducer Surface for Electrochemical Sensing of Acetone

Abstract

The present study was concentrated to develop a rapid, electrochemical, selective, cheap and easy to use carbon cloth (CC) based assay for the quantitative and qualitative detection. CC was fabricated with a ZnO nanoparticles first and then with diazonium salt. This modified CC was then applied for the detection of acetone. FTIR, AFM and SEM was used to explore the chemical and physical characteristics of CC of before and after each modification. These results manifested that ZnO-nanoflakes and diazonium salt functionalization could increase the roughness of the CC surface that was advantageous to promote the interaction between CC and analyte to be detected. Linear sweep voltammetry and cyclic voltamogram were used for electrochemical analysis. The proposed electrochemical sensor was analyzed for various concentration of acetone. To validate the concept, the proposed sensor was assessed for higher concentrations of acetone in different ways. Among them, ZnO nanoflakes/ CC which was modified with diazonium salt showed better response (in acetone solution alone) than ZnO nanoflakes /modified CC (in the solution of diazonium salt and variable concentrations of acetone)