Abstract：
Multifunctional nanoparticles (NPs) production from phytochemicals is a sustainable process and an eco-friendly method, and this technique has a variety of uses. To accomplish this, we developed zinc oxide nanoparticles (ZnONPs) using the medicinal plant Tinospora cordifolia (TC). Instruments such as UV-Vis, XRD, FTIR, FE-SEM with EDX, and high-resolution TEM were applied to characterize the biosynthesized TC-ZnONPs. According to the UV-vis spectra, the synthesized TC-ZnONPs absorb at a wavelength centered at 374 nm, which corresponds to a 3.2 eV band gap. HRTEM was used to observe the morphology of the particle surface and the actual size of the nanostructures. TC-ZnONPs mostly exhibit the shapes of rectangles and triangles with a median size of 21 nm. The XRD data of the synthesized ZnONPs exhibited a number of peaks in the 2θ range, implying their crystalline nature. TC-ZnONPs proved remarkable free radical scavenging capacity on DPPH (2,2-Diphenyl-1-picrylhydrazyl), ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid), and NO (Nitric Oxide). TC-ZnONPs exhibited dynamic anti-bacterial activity through the formation of inhibition zones against Pseudomonas aeruginosa (18 ± 1.5 mm), Escherichia coli (18 ± 1.0 mm), Bacillus cereus (19 ± 0.5 mm), and Staphylococcus aureus (13 ± 1.1 mm). Additionally, when exposed to sunlight, TC-ZnONPs show excellent photocatalytic ability towards the degradation of methylene blue (MB) dye. These findings suggest that TC-ZnONPs are potential antioxidant, antibacterial, and photocatalytic agents.
摘要：
从植物化学物质中生产多功能纳米颗粒（NPs）是一种可持续的过程和生态友好的方法，这种技术有多种用途。要做到这一点，我们使用药用植物Tinosporacordifolia（TC）开发了氧化锌纳米颗粒（ZnONPs）。仪器如UV-Vis,XRD,FTIR,FE-SEM与EDX，应用高分辨透射电镜对生物合成的TC-ZnONPs进行了表征。根据紫外可见光谱,合成的TC-ZnONPs在以374nm为中心的波长处吸收，这对应于3.2eV的带隙。使用HRTEM观察颗粒表面的形态和纳米结构的实际尺寸。TC-ZnONPs主要表现出矩形和三角形的形状，中值尺寸为21nm。合成的ZnONPs的XRD数据在2θ范围内显示出许多峰，暗示着它们的结晶本质。TC-ZnONPs证明了对DPPH（2,2-二苯基-1-吡啶酰肼）的显着自由基清除能力，ABTS(2,2-偶氮-双-3-乙基苯并噻唑啉-6-磺酸)，NO（一氧化氮）TC-ZnONPs通过形成针对铜绿假单胞菌的抑制区（18±1.5mm）表现出动态的抗菌活性，大肠杆菌(18±1.0mm),蜡样芽孢杆菌(19±0.5mm),金黄色葡萄球菌(13±1.1mm)。此外,当暴露在阳光下，TC-ZnONPs对亚甲基蓝(MB)染料的降解表现出优异的光催化能力。这些发现表明，TC-ZnONPs是潜在的抗氧化剂，抗菌，和光催化剂。
