Abstract
Effect of sintering and annealing on the morphology of zinc oxide (ZnO) and cerium-doped ZnO nanomaterials and their biocidal response was investigated. The autocombustion method was employed to prepare Ce-doped ZnO with cerium (Ce) concentrations of 0, 2, 4, 6, and 8 wt%. Subsequently, all the compositions were sintered at 800 ᴼC in the air to develop desired crystalline phase. Half of the sintered material was further annealed at 900 ᴼC in the air for 2 h. A wurtzite crystal structure was confirmed by X-ray diffraction, and an optical redshift was noticed upon dopping in the sintered and annealed specimens. Fourier transform infrared (FTIR) and scanning electron microscopic (SEM) analyses were carried out to determine functional groups and surface morphology, respectively. The biocidal response of sintered and annealed ZnO and Ce-doped ZnO against Bacillus meurellus, Escherichia coli, Acinetobacter rhizospherensis, and Bacillus subtillis were measured by the disc diffusion method and compared with penicillin as a standard antibiotic. Maximum efficiency was observed in the case of annealed 2% concentration of Ce in ZnO against all the selected bacteria in the form of inhibition zones of 34, 27, 40, and 40 mm for B. meurellus, E. coli, A. rhizospherensis, and B. subtillis, respectively, in 24 h. The obtained results highlight the morphological significance of Ce-doped ZnO nanomaterial in the antibacterial activity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
