A novel electrochemical synthesis of TiO2 nanoparticles and its application as bisphenol-B sensor

TiO2 nanoparticles synthesized by the electrochemical method for the modification of carbon paste electrode (CPE) to construct the bisphenol-B (BPB) electrochemical sensor have been successfully investigated. The synthesized TiO2 nanoparticles were identified by X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Spectroscopy UV-Vis, and Scanning Electron Microscope (SEM). The electrocatalytic of the TiO2 modified CPE (TiO2NPs/CPE) was determined by Cyclic Voltammetry (CV). The result showed that the presence of TiO2 nanoparticles on the surface CPE could improve the sensitivity electrode for BPB detection. The developed sensor has excellent stability, repeatability, reproducibility, low limit of detection at 0.001 µM (3σ), and wide linear ranges between 0.1-200 µM. In addition, the TiO2NPs/CPE sensor was also employed for determination of BPB in plastics as real samples. The recovery value was found at 98-103.67% which indicated the developed sensor has the potential to directly apply as a standard method for BPB detection.