فهرست نشریات علمی دسترسی آزاد ایران

Pure and zinc-doped zirconium oxide nanoparticles were synthesized using a co-precipitation process, and the effect of zinc doping on their photocatalytic and antimicrobial activities was investigated. The analyte contains Zn²⁺ incorporated into the ZrO₂ matrix at a concentration of x mol%.  Zr1-xZnxO2 nanoparticles with nominal composition of x = 0.04, 0.08, 0.12 wt. % were synthesized. The co-precipitation technique is based on the simultaneous precipitation of metal ions from an aqueous solution when a precipitating agent increases the pH above the solubility limit of the metal hydroxides. The prepared samples are pure tetragonal phase, as shown by the X-ray diffraction pattern, and the crystallite size increases with an increase in dopant concentration. A machine learning algorithm is introduced for the analysis of SEM images. This algorithm automates SEM image analysis using YOLOv8 and ConvNeXt to quantify nanoparticle morphology, agglomeration, and surface topography, enabling high-throughput, reproducible materials characterization for advanced research applications. The shape of high-dopant Zn demonstrates that it is composed of nanocubes.  All samples have magnetic hysteresis loops with diamagnetic background effects, according to VSM tests. When exposed to visible light, increasing the Zn2+ doping causes a drop in luminescence intensity. Photocatalytic activity steadily reduced with increasing zinc levels. This might be because excess zinc acts as a recombination center and covers the active sites on the zirconium oxide surface, lowering the effectiveness of charge separation. Zn-doped ZrO2 has better anti-bacterial and anti-fungal activities.