Assfour Bassem, Abadllah Bassam, Daoud Nada, Kakhia Mahmoud, Zetoun Walaa
Atomic Energy Commission, Department of Chemistry, P. O. Box 6091, Damascus, Syria.
Atomic Energy Commission, Department of Physics, P. O. Box 6091, Damascus, Syria.
Heliyon. 2024 Aug 29;10(17):e36784. doi: 10.1016/j.heliyon.2024.e36784. eCollection 2024 Sep 15.
ZnS is an appealing material with wide potential applications in optoelectronics, sensors, and photocatalysis due to its fascinating properties, low cost, and eco-friendly. In this paper, we report the synthesis of ZnS nanowires and nanorods via a simple thermal-evaporation method using different concentrations of PbS as a dopant. The prepared nanostrutures were investigated in detalis using a scanning electron microscopy (SEM), X-ray diffraction (XRD), and high resolution transmission electron microscopy (HRTEM). The results show that the fabricated ZnS nanowire/nanorod has a wurtzite (hcp) structure. In addition, based on the experimental results, the growth mechanism of the prepared nanostructures is reported. X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray (EDX) mapping analyses confirmed that the ZnS nanorods were stoichiometric without impurities or defects, whereas PbS quantum dots were formed inside the high-quality nanowires. The formation mechanism of ZnS nanowires is discussed based on the vapor-liquid-solid (VLS) growth model. Results demonstrated that thermal evaporation is a simple and effective techniques for producing high-quality heterostructured ZnS nanowires with potential applications in different fields.
硫化锌是一种具有吸引力的材料，因其迷人的特性、低成本和环境友好性，在光电子学、传感器和光催化领域具有广泛的潜在应用。在本文中，我们报告了通过一种简单的热蒸发方法，使用不同浓度的硫化铅作为掺杂剂来合成硫化锌纳米线和纳米棒。使用扫描电子显微镜（SEM）、X射线衍射（XRD）和高分辨率透射电子显微镜（HRTEM）对制备的纳米结构进行了详细研究。结果表明，制备的硫化锌纳米线/纳米棒具有纤锌矿（六方密堆积）结构。此外，基于实验结果，报告了制备的纳米结构的生长机制。X射线光电子能谱（XPS）和能量色散X射线（EDX）映射分析证实，硫化锌纳米棒是化学计量的，没有杂质或缺陷，而高质量纳米线内部形成了硫化铅量子点。基于气-液-固（VLS）生长模型讨论了硫化锌纳米线的形成机制。结果表明，热蒸发是一种简单有效的技术，可用于生产具有不同领域潜在应用的高质量异质结构硫化锌纳米线。
