Monitoring of Alizarin Red S (an environmental toxic dye) Using Cu-Ni Bimetallic Hybrid Nanoparticles Synthesized with Various Rations

Abstract The development of novel nanomaterials opens the windows of research in several areas. However, its optimal synthesis and characterization is a challenging task for its performance in specific fields of use. Cu-Ni bimetallic hybrid alloy nanoparticles were manufactured by reinforcing Cu with Ni using ethylene glycol as a solvent as well as a reducing agent, and polyvinyl pyrrolidon as a fabrication material, for sensing application. UV-Vis spectroscopy, steady-state fluorescence, Scanning Electron Microscopy (SEM), X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) techniques were used for the confirmation and morphological studies of synthesized nanoparticles. Results display that Cu portrays enhanced characteristics. SEM shows outstanding topographic properties for Cu-Ni bimetallic hybrid nanoparticles. A composite electrode of Cu-Ni/PVP/GCE (Cu-Ni NPs based electrochemical sensor) is developed by coating Cu-Ni (3:1) hybrid nanoparticles embedded in polyvinyl pyrrolidone (PVP) at the surface of cleaned Glassy Carbon Electrode (GCE). The lowest possible concentration of Alzarin Red S (0.12 µM) was detected by using Cu-Ni bimetallic hybrid nanoparticles based electrochemical sensor.