Mohammed Raghad Y, Ahmed Furman Kasseem, Abdulrahman Ahmed Fattah, Hamad Samir Mustafa, Ahmed Sabah M, Barzinjy Azeez Abdullah, Almessiere Munirah Abdullah
Department of Physics, College of Science, University of Duhok, 42001 Duhok, Kurdistan Region, Iraq.
Physiotherapy Department, Hawler Medical University/College of Health Science, 44001 Erbil, Kurdistan Region, Iraq.
ACS Omega. 2023 Jun 8;8(24):22230-22237. doi: 10.1021/acsomega.3c02910. eCollection 2023 Jun 20.
Chemical bath deposition (CBD) technique is utilized to grow lead-oxide (PbO) nanostructures (NSs) over PbO seed fabricated by physical vapor deposition (PVD) method on glass substrates. The effect of growth temperatures 50 and 70 °C on the surface topography, optical properties, and crystal structure of lead-oxide NSs has been studied. The investigated results suggested that the growth temperature has a huge and very considerable influence on the PbO NS, and the fabricated PbO NS has been indexed as the PbO polycrystalline tetragonal phase. The crystal size for PbO thin films grown at 50 °C was 85.688 nm and increased to 96.61 nm once the growth temperature reached 70 °C. The fabricated PbO nanofilms show a high rate of transmittance, which are ∼70 and 75% in the visible spectrum for the films deposited at 50 and 70 °C, respectively. The obtained was in the range of 2.099-2.288 eV. Also, the linear attenuation coefficient values of gamma-rays for shielding the Cs-137 radioactive source increased at 50 °C. The transmission factor, mean free path, and half-value layer are reduced at a higher attenuation coefficient of PbO grown at 50 °C. This study evaluates the relationship between synthesized lead-oxide NSs and the radiation energy attenuation of gamma-rays. This study provided a suitable, novel, and flexible protective shield of clothes or an apron made of lead or lead oxide to protect against ionizing radiation that meets safety rules and protects medical workers from ionizing radiation.
采用化学浴沉积（CBD）技术在玻璃基板上通过物理气相沉积（PVD）法制备的氧化铅（PbO）种子上生长氧化铅纳米结构（NSs）。研究了50℃和70℃的生长温度对氧化铅纳米结构的表面形貌、光学性质和晶体结构的影响。研究结果表明，生长温度对氧化铅纳米结构有巨大且非常显著的影响，制备的氧化铅纳米结构被确定为多晶四方相的氧化铅。50℃下生长的氧化铅薄膜的晶体尺寸为85.688nm，当生长温度达到70℃时增加到96.61nm。制备的氧化铅纳米薄膜显示出高透射率，在可见光光谱中，50℃和70℃下沉积的薄膜的透射率分别约为70%和75%。得到的禁带宽度在2.099 - 2.288eV范围内。此外，屏蔽Cs - 137放射性源的γ射线的线性衰减系数值在50℃时增加。在50℃下生长的氧化铅具有较高的衰减系数，其透射因子、平均自由程和半值层降低。本研究评估了合成的氧化铅纳米结构与γ射线辐射能量衰减之间的关系。本研究提供了一种合适、新颖且灵活的由铅或氧化铅制成的衣服或围裙防护屏蔽物，以防止电离辐射，符合安全规则并保护医护人员免受电离辐射。
