Fabrication of Tb doped ZnO nanoparticle via co-precipitation technique for multifunctional applications

Abstract

Chemical co-precipitation method was adopted for the synthesize of ZnO and 3 wt% Tb doped ZnO (Tb-ZnO) nanoparticles (NPs) using ascorbic acid as a capping agent and its Optical, photoluminescence, electrochemical-sensing and antibacterial properties were investigated. Formation of hexagonal wurtzite structure was confirmed by XRD studies.FTIR shows strong absorption and stretching vibration between the molecules. The samples morphology was identified by SEM and TEM micrographs. Elemental composition was done by EDXA spectroscopy.Specific surface area and porosity of Tb-ZnO NPs have been examined by BET method. The influence of Tb content on bandgap was analyzed by UV–Vis spectra; the band gap was originating to be 3.2 and 3.56 eV for undoped ZnO and Tb-ZnO NPs, respectively. PL study confirmed the existence of various types of defects as well as band edges.Electrochemical routines in the direction of moxifloxacin drug were ominously examined via dopant and supplementary results stood established through Tb-ZnO as electrode was made of modified carbon paste (Tb-ZnO/MCPE) by cyclic Voltammetric technique. The antibacterial activities of ZnO and Tb-ZnO NPs were studied by agar well diffusion technique as opposed to pathogenic bacterial strains.