Jamil Huma, Faizan Muhammad
Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.
University of the Punjab, Lahore, Pakistan.
Heliyon. 2024 Aug 6;10(16):e35828. doi: 10.1016/j.heliyon.2024.e35828. eCollection 2024 Aug 30.
Zinc Oxide (ZnO) nanoparticles (NPs) were synthesized using an environmentally benign biogenic approach employing an extract of kernels of (kalonji). The presence of primary and secondary metabolites in extract acted as the capping and reducing agent. The as-synthesized ZnO NPs were characterized using various advanced techniques i.e., UV, SEM, XRD, EDS, TGA, DSC, and FTIR spectra. UV characterization of ZnO NPs revealed a peak within the 350-400 cm range, confirming their successful formation. XRD spectra revealed that the particles possess a nano-rods and platelets structure, with an average size of 65 nm. XRD analysis revealed that the particles possess a size of 65 nm with a nano-rods and platelets structure. FTIR spectra of the ZnO NPs exhibited a peak at a wavenumber range of 500-600 cm. The newly fabricated ZnO NPs were utilized in a pyrolysis reaction for the production of high-yield bio-oil, resulting in a maximum yield of 65.6 % at 350 °C. The spectra of the bio-oil display distinct peaks at 1340 cm, 2923.6 cm, and 1617 cm, which suggest the existence of phenolic and carbonyl chemicals. After incubating for 24 h under UV light, they also demonstrated significant catalytic degradation of methylene blue dye. The highest degradation was recorded to be an average of 71 % in 60 min of UV exposure. Taken together, ZnO NPs developed by eco-benign methods have the potential to be implemented as a novel catalytic system in the production of bio-oil as well as the remediation of dye-harboring industrial wastewater.
采用环境友好的生物合成方法，利用（黑种草）籽仁提取物合成了氧化锌（ZnO）纳米颗粒（NPs）。黑种草提取物中初级和次级代谢产物的存在起到了封端和还原剂的作用。采用各种先进技术对合成的ZnO NPs进行了表征，即紫外光谱、扫描电子显微镜、X射线衍射、能谱、热重分析、差示扫描量热法和傅里叶变换红外光谱。ZnO NPs的紫外表征显示在350 - 400 cm范围内有一个峰，证实了它们的成功形成。X射线衍射光谱表明，这些颗粒具有纳米棒和片状结构，平均尺寸为65 nm。X射线衍射分析表明，颗粒尺寸为65 nm，具有纳米棒和片状结构。ZnO NPs的傅里叶变换红外光谱在500 - 600 cm波数范围内出现一个峰。新制备的ZnO NPs用于热解反应以生产高产率的生物油，在350℃时最大产率为65.6%。生物油的光谱在1340 cm、2923.6 cm和1617 cm处显示出明显的峰，这表明存在酚类和羰基化合物。在紫外光下孵育24小时后，它们还表现出对亚甲基蓝染料的显著催化降解作用。在60分钟的紫外照射下，最高降解率平均为71%。综上所述，通过环境友好方法制备的ZnO NPs有潜力作为一种新型催化系统应用于生物油生产以及含染料工业废水的修复。
