Abstract

Microwave-assisted methods are facile synthetic routes for the synthesis of nanoparticles. Cu₂O nanoaggregates (Cu₂O NA) were synthesized using Bauhinia purpurea (B. purpurea) leaf extract via microwave method. The incorporation of Cu₂O NA in β-cyclodextrin generated Cu₂O-β-CD nanocomposite (Cu₂O-β-CD NC). The structure and morphology of the Cu₂O-β-CD NC were investigated using characterization techniques like Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. The crystallines Cu₂O NA and Cu₂O-β-CD NC have size 30.65 and 19.73 nm, respectively. The Cu₂O-β-CD NC revealed excellent catalytic activities for the reduction of nitro aromatic compounds in the presence of NaBH₄. Gold electrode modified with Cu₂O-β-CD NC is effective for the sensing levofloxacin. The electrocatalytic performance of the modified electrode was optimized, and the limit of detection was found to be 6.93 nM. The synergistic effect between the semiconductor Cu₂O nanoaggregates and high adsorption capability of β-CD provided a better platform for the fast degradation of 4-nitrophenol and enhanced sensitivity for the determination of levofloxacin.

Graphic abstract

中文翻译：

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β-环糊精中绿色合成的Cu 2 O纳米聚集体，用于催化还原和电化学传感

摘要

微波辅助方法是合成纳米颗粒的简便合成途径。利用紫荆花（B. purpurea）叶提取物通过微波法合成了Cu ₂ O纳米聚集体（Cu ₂ O NA）。Cu的掺入₂ öNA在β环糊精生成的Cu ₂ O-β-CD纳米复合材料（铜₂ O-β-CD NC）。的Cu的结构和形态₂使用的表征技术像傅里叶变换红外光谱，X射线光电子能谱法，X射线衍射O-β-CD NC进行了调查，扫描电子显微镜，透射电子显微镜和原子力显微镜。晶体Cu ₂ÒNA和Cu ₂ O-β-CD NC分别具有大小30.65 19.73和纳米。在Cu ₂ O-β-CD NC揭示了硝基芳族化合物的硼氢化钠中的存在降低优异的催化活性₄。与铜修饰的金电极₂ O-β-CD NC是有效的所述感测的左氧氟沙星。优化了修饰电极的电催化性能，发现极限为6.93 nM。半导体Cu ₂ O纳米聚集体与β-CD的高吸附能力之间的协同效应为4-硝基苯酚的快速降解提供了更好的平台，并提高了左氧氟沙星的测定灵敏度。

图形摘要