Plant Mediated Green Synthesis of CuO Nanoparticles: Comparison of Toxicity of Engineered and Plant Mediated CuO Nanoparticles towards Daphnia magna.
Plant Mediated Green Synthesis of CuO Nanoparticles: Comparison of Toxicity of Engineered and Plant Mediated CuO Nanoparticles towards Daphnia magna.
复制标题
植物介导的 CuO 纳米颗粒的绿色合成：工程化和植物介导的 CuO 纳米颗粒对大型溞的毒性比较。
DOI：
10.3390/nano6110205
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发表时间：
2016-11-09
期刊：
影响因子：
--
通讯作者：
Chen Y
中科院分区：
文献类型：
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作者：
Saif S;Tahir A;Asim T;Chen Y
对金属氧化物纳米颗粒（NPs）的绿色生产方法的研究正在增长，目的是克服这些化学品的潜在危害，以实现更安全的环境。在这项研究中，简单，生态友好的氧化铜（CuO）纳米粒子的合成成功地实现了使用Pterospermum acerifolium叶的水提取物。采用紫外-可见光谱、场发射扫描电子显微镜（FE-SEM）、能量色散X射线（EDX）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）和动态光散射（DLS）等手段对所制备的CuO纳米粒子进行了表征。植物介导的CuO纳米粒子被发现是椭圆形的，并在悬浮液中分散良好。XPS证实了由P. acerifolium介导的铜纳米颗粒的元素组成纯粹由铜和氧组成。DLS测量和离子释放曲线表明，P. acerifolium介导的铜纳米颗粒比工程化的CuO纳米颗粒更稳定。氧化铜纳米颗粒在许多应用中使用;因此，其潜在的毒性不容忽视。比较研究了植物合成和工程化CuO纳米颗粒对水蚤的生物毒性影响。进行实验以研究工程化CuO纳米颗粒和植物合成的纳米颗粒的48小时急性毒性。对于工程化CuO NP观察到较低的EC 50值0.102 ± 0.019 mg/L，而对于植物合成的CuO NP观察到0.69 ± 0.226 mg/L。此外，还计算了CuO纳米颗粒的离子释放和这些纳米CuO在水蚤中的48小时积累。因此，我们的研究结果表明，从纳米颗粒和颗粒/离子的积聚在水蚤释放的离子的贡献需要小心解释。
Research on green production methods for metal oxide nanoparticles (NPs) is growing, with the objective to overcome the potential hazards of these chemicals for a safer environment. In this study, facile, ecofriendly synthesis of copper oxide (CuO) nanoparticles was successfully achieved using aqueous extract of Pterospermum acerifolium leaves. P. acerifolium-fabricated CuO nanoparticles were further characterized by UV-Visible spectroscopy, field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS). Plant-mediated CuO nanoparticles were found to be oval shaped and well dispersed in suspension. XPS confirmed the elemental composition of P. acerifolium-mediated copper nanoparticles as comprised purely of copper and oxygen. DLS measurements and ion release profile showed that P. acerifolium-mediated copper nanoparticles were more stable than the engineered CuO NPs. Copper oxide nanoparticles are used in many applications; therefore, their potential toxicity cannot be ignored. A comparative study was performed to investigate the bio-toxic impacts of plant-synthesized and engineered CuO nanoparticles on water flea Daphnia. Experiments were conducted to investigate the 48-h acute toxicity of engineered CuO NPs and plant-synthesized nanoparticles. Lower EC50 value 0.102 ± 0.019 mg/L was observed for engineered CuO NPs, while 0.69 ± 0.226 mg/L was observed for plant-synthesized CuO NPs. Additionally, ion release from CuO nanoparticles and 48-h accumulation of these nano CuOs in daphnids were also calculated. Our findings thus suggest that the contribution of released ions from nanoparticles and particles/ions accumulation in Daphnia needs to be interpreted with care.