Prakruthi Raju, Deepakumari Hemavathi Nagaraju
Department of Chemistry, Bharathi College Bharathinagara Mandya 571 422 Karnataka India.
Department of Chemistry, Regional Institute of Education (NCERT) Bhubaneswar 751 022 Odisha India
RSC Adv. 2024 Sep 10;14(39):28703-28715. doi: 10.1039/d4ra04622f. eCollection 2024 Sep 4.
The use of metal oxide nanoparticles for heterogeneous photodegradation is a prominent method for the removal of organic dyes from water resources. Compared to conventional approaches to treat polluted water, it is a more preferable method because of its environmental friendliness, low cost, and no requirement of extreme temperature and pressure. Among all the nanoparticles, CuO is a prominent material. Therefore, this study reports on the biogenic preparation of CuO nanoparticles by adopting a combustion method and pod extract as fuel. The synthesized nanoparticles were characterized through X-ray diffraction spectroscopy to confirm the crystallinity of CuO; the surface morphology of the material was studied using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) and the purity of the material was confirmed by energy dispersive X-ray spectroscopy. The degradation efficiency of CuO nanoparticles towards methylene blue dye, a model pollutant present in water resources, was assessed and found to be 97% after 90 minutes of light exposure. The synthesized CuO nanoparticles were also examined for antioxidant and electrochemical sensing studies using cyclic voltammetry. Results showed that CuO nanoparticles function as a strong antioxidant and are a very effective electrochemical sensor.
使用金属氧化物纳米颗粒进行多相光降解是一种从水资源中去除有机染料的重要方法。与处理污染水的传统方法相比，它是一种更可取的方法，因为它环境友好、成本低，且不需要极端的温度和压力。在所有纳米颗粒中，氧化铜是一种重要的材料。因此，本研究报告了采用燃烧法并以豆荚提取物作为燃料生物制备氧化铜纳米颗粒的过程。通过X射线衍射光谱对合成的纳米颗粒进行表征，以确认氧化铜的结晶度；使用扫描电子显微镜（SEM）和X射线光电子能谱（XPS）研究材料的表面形态，并通过能量色散X射线光谱确认材料的纯度。评估了氧化铜纳米颗粒对水资源中存在的模型污染物亚甲基蓝染料的降解效率，发现光照90分钟后降解效率为97%。还使用循环伏安法对合成的氧化铜纳米颗粒进行了抗氧化和电化学传感研究。结果表明，氧化铜纳米颗粒具有强抗氧化功能，是一种非常有效的电化学传感器。
