Shrestha Sabina, Tiwari Laxmi, Dhungana Sujan, Maharjan Jasana, Khadka Devendra, Kim Allison A, Pokhrel Megh Raj, Baral Janaki, Park Mira, Poudel Bhoj Raj
Department of Chemistry, Tri Chandra Multiple Campus, Tribhuvan University, Kathmandu 44600, Nepal.
Department of Chemistry, Padma Kanya Multiple Campus, Tribhuvan University, Kathmandu 44600, Nepal.
Nanomaterials (Basel). 2025 Jun 3;15(11):858. doi: 10.3390/nano15110858.
is effectively utilized to synthesize zinc oxide nanoparticles (Av-ZnO NPs), providing an alternative to traditional chemical and physical methods. This sustainable approach minimizes the environmental impacts and enhances their compatibility with herbal ecosystems. We comprehensively analyzed the optical, structural, morphological, and catalytic properties of Av-ZnO NPs using various analytical methods. The results indicated that the nanoparticles primarily exhibited a spherical shape. X-ray diffraction (XRD) revealed the successful formation of a highly crystalline hexagonal wurtzite structure, with an average size estimated at 12.2 nm. The antimicrobial properties of the Av-ZnO NPs indicated moderate antibacterial effectiveness. Using the DPPH free radical scavenging method, we evaluated the antioxidant properties, where the Av-ZnO NPs exhibited improved the radical scavenging efficiency, reflected by a lower IC value compared to the plant extract. Additionally, we assessed the photocatalytic functionality through the degradation of methylene blue (MB) dye, finding that the Av-ZnO NPs achieved approximately 82.43% degradation in 210 min, demonstrating their potential for environmental remediation. These findings suggest that green-synthesized ZnO NPs could play a noteworthy role in various nanotechnology applications and biomedical fields, while also promoting environmental sustainability.
被有效地用于合成氧化锌纳米颗粒（Av-ZnO NPs），为传统化学和物理方法提供了一种替代方案。这种可持续的方法将环境影响降至最低，并增强了它们与草本生态系统的兼容性。我们使用各种分析方法全面分析了Av-ZnO NPs的光学、结构、形态和催化性能。结果表明，纳米颗粒主要呈现球形。X射线衍射（XRD）显示成功形成了高度结晶的六方纤锌矿结构，平均尺寸估计为12.2纳米。Av-ZnO NPs的抗菌性能表明其具有中等抗菌效果。使用DPPH自由基清除法，我们评估了抗氧化性能，其中Av-ZnO NPs表现出提高的自由基清除效率，与植物提取物相比，IC值更低反映了这一点。此外，我们通过亚甲基蓝（MB）染料的降解评估了光催化功能，发现Av-ZnO NPs在210分钟内实现了约82.43%的降解，证明了它们在环境修复方面的潜力。这些发现表明，绿色合成的ZnO NPs在各种纳米技术应用和生物医学领域中可以发挥重要作用，同时也促进了环境可持续性。
