Study Of Structural, Optical And Electrochemical Properties Of Go/Tio2 Nanostructures Prepared By Microwave-Assisted Technique For Its Application As A Glucose Sensor

The present work proposes a microwave-assisted technique for the synthesis of graphene oxide and titanium dioxide (GO/TiO2) nanocomposite. XRD, FESEM, EDS, UV, FTIR, Raman, and XPS spectroscopy were employed to study the elemental composition and surface morphology of the nanocomposite. FESEM revealed the spherical morphology of GO/TiO2 nanocomposite. It was observed that nanosized densely packed spherical TiO2 particles were attached to graphene sheets. A modified electrode was prepared using fluorine-doped tin oxide (FTO) substrate for electrochemical detection of the non-enzymatic glucose sensor. Linear sweep voltammetry (LSV) and cyclic voltammetry (CV) were adopted for the electrochemical measurements of GO/TiO2/FTO electrode. The high sensitivity of 426.5 mu A mM(-1).cm(2), the linear detection range of 0.1 mM to 11 mM, the low detection threshold of 0.1 mu M along with quick response time of 6 s towards glucose sensing are some highlights of the prepared electrode. Moreover, the microwave technique used for the preparation of GO/TiO2 composite is rapid and cost-effective.