In this work, for the first time, lead oxide nanoparticles (PbO-NPs) were synthesized using Trigonella feonumgraecum plant seeds as a stabilizer and Pb(NO3)2 salt as a lead precursor. The results of the XRD pattern displayed the synthesized NPs have an orthorhombic crystalline structure. According to FESEM images, the NPs had a mean size of about 18.62 nm with a spherical morphology. Also, the cytotoxicity of NPs was evaluated on the Hep G2 cancer cell line, and the IC50 value was reported as 267.07 μg/mL. Next, the photocatalytic performance of the synthesized PbO-NPs was investigated for removing methylene orange (MO) pigment under UVA light, which led to the destruction of about 94% after 120 min. Finally, to investigate the protective properties of PbO-NPs against X-ray, a polymer nanocomposite of epoxy resin/PbO-NPs was prepared with different weight percentages. In the same way, other samples were also prepared, and then their ability to attenuate X-ray was studied with an X-ray tube with a voltage of 52 kV for the palm and 80 kV for the thigh of an average person, respectively. The measurement results show that with the increasing weight percentage of the fillers, the samples' linear and mass attenuation coefficient increases, which means an increase in the efficiency of the samples in X-ray attenuation. Generally, epoxy resin/PbO-NPs samples show a better effect than other samples. Therefore, these types of shields can attract more attention due to their lightness, cost-effectiveness, and far fewer environmental hazards than common lead shields.

中文翻译：

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由 PbO 纳米颗粒和 PbO micro 增强的新型环氧树脂的屏蔽特性，用于防止 X 射线，并研究它们的细胞毒性效应和光催化活性


在这项工作中，首次以 Trigonella feonumgraecum 植物种子为稳定剂，Pb（NO3）2 盐为铅前驱体合成了氧化铅纳米颗粒 （PbO-NPs）。XRD 图谱结果表明，合成的 NPs 具有正交晶体结构。根据 FESEM 图像，NP 的平均大小约为 18.62 nm，具有球形形态。此外，在 Hep G2 癌细胞系上评估了 NPs 的细胞毒性，IC50 值为 267.07 μg/mL。接下来，研究了合成的 PbO-NPs 在 UVA 光下去除亚甲基橙 （MO） 色素的光催化性能，导致 120 min 后破坏率约为 94%。最后，为了研究 PbO-NPs 对 X 射线的保护性能，制备了不同重量百分比的环氧树脂/PbO-NPs 聚合物纳米复合材料。以同样的方式，还制备了其他样品，然后用普通人手掌电压分别为 52 kV 和大腿电压为 80 kV 的 X 射线管研究它们衰减 X 射线的能力。测量结果表明，随着填料重量百分比的增加，样品的线性衰减系数和质量衰减系数增加，这意味着样品在 X 射线衰减中的效率增加。通常，环氧树脂/PbO-NPs 样品比其他样品表现出更好的效果。因此，这些类型的屏蔽层因其轻便、成本效益高且比普通铅屏蔽层少得多的环境危害而吸引更多关注。