Pure and iron (Fe)-doped ZnO nanoparticles were synthesized using polyethylene glycol in the absence of reducing agents such as NaOH and ammonia. From XRD patterns, particle sizes pure (33.38 ± 2 nm) and Fe-doped ZnO (27.99 ± 2 nm) were calculated, which were found to be in nanoscale range. XRD patterns of the synthesized samples were refined by the Rietveld method using hexagonal unit cell, and the refinement results for the single-phase samples revealed that the unit cell volume slightly increases by iron doping of ZnO. Antifungal activity of pure and Fe-doped ZnO nanoparticles was observed against three postharvest pathogenic fungi such as Aspergillus niger, Aspergillus flavus and Rhizopus. Iron doping enhances the inhibition zone for all fungal pathogens compared to the pure ZnO nanoparticles. Antifungal activity of the Fe-doped ZnO nanoparticles is comparable with the standard antibiotic mycostatin whose inhibition zone is 18 mm against A. Niger.

中文翻译：

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在没有还原剂的情况下制备的纯铁掺杂ZnO纳米颗粒的增强的抗真菌活性

在不存在还原剂（例如NaOH和氨）的情况下，使用聚乙二醇合成了纯铁（Fe）和铁（Fe）掺杂的纳米粒子。根据XRD图谱，可以计算出纯的粒径（33.38±2 nm）和掺铁的ZnO（27.99±2 nm），均在纳米范围内。使用六方晶胞通过Rietveld方法精制合成样品的XRD图谱，单相样品的精修结果表明，ZnO的铁掺杂使晶胞体积略有增加。观察到纯铁掺杂的ZnO纳米颗粒对三种收获后病原真菌如黑曲霉，黄曲霉和根霉的抗真菌活性。。与纯ZnO纳米颗粒相比，铁掺杂增强了对所有真菌病原体的抑制区。Fe掺杂的ZnO纳米颗粒的抗真菌活性与标准抗生素mycostatin相当，其对A. Niger的抑制区为18 mm 。