UNESCO-UNISA Africa Chair in Nanosciences and Nanotechnology College of Graduates Studies University of South Africa, Muckleneuk Ridge, Pretoria, 392, South Africa.
Nanosciences African Network (NANOAFNET) iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West, Western Cape, 7129 PO Box 722, South Africa.
F1000Res. 2021 Oct 25;10:1077. doi: 10.12688/f1000research.73272.4. eCollection 2021.
Nanoparticles are globally synthesized for their antimicrobial, anti-inflammatory, wound healing, catalytic, magnetic, optical, and electronic properties that have put them at the forefront of a wide variety of studies. Among them, zinc oxide (ZnO) has received much consideration due to its technological and medicinal applications. In this study, we report on the synthesis process of ZnO nanoparticles using DC natural extract as a reducing agent. Liquid chromatography-mass spectrometry (LC-MS) was used to identify the compounds responsible for the synthesis of ZnO nanoparticles. Structural, morphological and optical properties of the synthesized nanoparticles have been characterized through X-ray diffraction (XRD), Ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). LC-MS results showed that different flavonoids and polyphenols, as well as Coumarin, an aromatic compound, reacted with the precursor to form ZnO nanoparticles. XRD and UV-Vis analysis confirmed the synthesis of ZnO nanoparticles, with a spherical shape showed in SEM images. The quasi-spherical ZnO crystals had an average crystallite size of 24 nm. EDS and FTIR analysis confirmed that the powders were pure with no other phase or impurity. This study successfully demonstrated that the natural plant extract of DC. can be used in the bio-reduction of zinc nitrate hexahydrate to prepare pure ZnO nanoparticles, thus, extending the use of this plant to an industrial level.
纳米粒子因其具有抗菌、抗炎、伤口愈合、催化、磁性、光学和电子特性而在全球范围内被合成，这些特性使它们成为各种研究的前沿。其中，氧化锌 (ZnO) 因其在技术和医学上的应用而受到广泛关注。在这项研究中，我们报告了使用 DC 天然提取物作为还原剂合成 ZnO 纳米粒子的过程。使用液相色谱-质谱联用 (LC-MS) 鉴定了负责合成 ZnO 纳米粒子的化合物。通过 X 射线衍射 (XRD)、紫外-可见光谱 (UV-Vis)、傅里叶变换红外光谱 (FTIR)、扫描电子显微镜 (SEM) 和能谱 (EDS) 对合成纳米粒子的结构、形貌和光学性质进行了表征。LC-MS 结果表明，不同的类黄酮和多酚，以及芳香族化合物香豆素，与前体反应形成 ZnO 纳米粒子。XRD 和 UV-Vis 分析证实了 ZnO 纳米粒子的合成，SEM 图像显示出球形。准球形 ZnO 晶体的平均晶粒尺寸为 24nm。EDS 和 FTIR 分析证实粉末是纯的，没有其他相或杂质。本研究成功地证明了 DC 的天然植物提取物可以用于硝酸锌六水合物的生物还原，以制备纯 ZnO 纳米粒子，从而将这种植物的用途扩展到工业水平。
