In this paper, the effect of iron (Fe) doping concentration on the morphology, optical and electronic properties, and photocatalytic activity of ZnO nanostructures is comprehensively studied. The results show a nonlinear relationship between Fe concentration and photocatalytic efficiency, with the highest efficiency observed at a Fe concentration of 1%. X-ray diffractometry (XRD) analysis showed that when the Fe concentration exceeds 5%, the secondary phase ZnFe₂O₄ separates. The crystallite size decreases from 50.8 nm to 21.4 nm, and the microdeformation increases with increasing Fe concentration. UV-Vis spectroscopy results showed a narrowing of the band gap and an increase in absorption in the visible region due to Fe doping. DFT calculations confirm the formation of shallow donor levels originating from the Fe 3d state. Photoluminescence (PL) spectra showed characteristic emission peaks around 384 nm and 570 nm, indicating recombination of free excitons and oxygen interstitial defects in the pure and Fe-doped ZnO nanostructures, respectively. The results of photocatalytic activity tests showed that 1% Fe-doped ZnO nanostructures exhibited the highest efficiency compared to ZnO nanostructures with higher concentration.
| Mualliflar | Kh. Arzimurodova, N. Mukhamadiyev, H. Usmonova, J. Uzokov |
|---|---|
| Jurnal | Samarqand davlat universiteti ilmiy tadqiqotlar axborotnomasi |
| Nashr sanasi | 2026-07-01 |
| Jild | 2 |
| Son | 3 |
| Betlar | 114-121 |
| DOI | 10.59251/2181-3973.2025.v1.138.1.3964 |
DOI: 10.59251/2181-3973.2025.v1.138.1.3964 · Maqolaning asl sahifasi
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