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<p>Pure and Ce doped ZnO nanoparticles were synthesized by means of co-precipitation method. X-ray diffraction (XRD) analysis confirms that all synthesized nanoparticles exhibit a well-crystallized hexagonal wurtzite structure, with no detectable impurity phases within the instrument detection limit. The average crystallite size decreases from ~ 42&#xa0;nm to ~ 27&#xa0;nm with increasing Ce concentration, indicating Ce-induced lattice strain and defect formation. FESEM images delineated hexagonal shaped in ZnO nanoparticles. EDX affirms the synthesis of undoped and Ce doped ZnO nanoparticles. Photoluminescence results demonstrate that Ce doping significantly enhances defect-related visible emissions while suppressing near-band-edge ultraviolet emission. Ce-doped ZnO nanoparticles exhibit improved antibacterial activity against both <i>Staphylococcus aureus</i> and <i>Escherichia coli</i>, attributed to increased oxygen-vacancy-mediated surface reactivity.</p>

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Tuning photoluminescence through Ce doping: structure and morphology of co-precipitated ZnO nanoparticles

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • S P Ramachandran,
  • A Sakthivelu

摘要

Pure and Ce doped ZnO nanoparticles were synthesized by means of co-precipitation method. X-ray diffraction (XRD) analysis confirms that all synthesized nanoparticles exhibit a well-crystallized hexagonal wurtzite structure, with no detectable impurity phases within the instrument detection limit. The average crystallite size decreases from ~ 42 nm to ~ 27 nm with increasing Ce concentration, indicating Ce-induced lattice strain and defect formation. FESEM images delineated hexagonal shaped in ZnO nanoparticles. EDX affirms the synthesis of undoped and Ce doped ZnO nanoparticles. Photoluminescence results demonstrate that Ce doping significantly enhances defect-related visible emissions while suppressing near-band-edge ultraviolet emission. Ce-doped ZnO nanoparticles exhibit improved antibacterial activity against both Staphylococcus aureus and Escherichia coli, attributed to increased oxygen-vacancy-mediated surface reactivity.