The global society widely utilises pesticides to enhance agricultural productivity. These pesticides adversely affect the environment by leaching into groundwater and contaminating it. To tackle this issue, we have synthesized the Ag/Ag₂O/CuO nanocomposite (NC) using a one pot hydrothermal process at a low temperature as a potential material for the removal of isoproturon from wastewater. Comprehensive characterization of the NC was performed using various analytical techniques. The PXRD analysis confirms the synthesis of Ag/Ag₂O/CuO NC. XPS validates a peak at 367.5 eV of Ag (O), which was deconvoluted by a Gaussian profile, giving 16.75% and 11.64% concentration of Ag and Ag⁺ ions, respectively. DRS analysis observed a significant shift in the band gap from 1.51 to 1.65 eV in the NC. This blue shift is attributed to the Moss–Burstein effect, due to the addition of high concentration of silver. The photodegradation of isoproturon has been performed under light irradiation using Ag/Ag₂O/CuO NC, which exhibits photocatalytic degradation efficiency of 98%, higher than pure CuO NPs and Ag₂O NPs. The improved photocatalytic performance of the NC can be attributed to the existence of oxygen vacancies, as confirmed by the XPS investigation and EPR spectrum. The photocatalyst was also explored for its effectiveness in regeneration and repurposing of isoproturon. The antibacterial activity against both gram-negative (E. coli) and gram-positive (Streptomyces toxytricini) strains is observed and results in effective inhibition of the growth of bacteria using the produced NC.

中文翻译：

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形状工程 Ag/Ag2O/CuO 纳米结构用于协同农用化学品修复和微生物抑制


全球社会广泛使用杀虫剂来提高农业生产力。这些杀虫剂会渗入地下水并污染地下水，从而对环境产生不利影响。为了解决这个问题，我们在低温下使用单锅水热工艺合成了 Ag/Ag₂O/CuO 纳米复合材料 （NC），作为从废水中去除异丙隆的潜在材料。使用各种分析技术对 NC 进行全面表征。PXRD 分析证实了 Ag/Ag₂O/CuO NC 的合成。XPS 验证了 Ag （O） 在 367.5 eV 处的峰，该峰通过高斯曲线进行去卷积，分别得到 16.75% 和 11.64% 的 Ag ^{和 Ag+} 离子浓度。DRS 分析观察到 NC 中的带隙从 1.51 eV 显着变化到 1.65 eV。这种蓝移归因于莫斯-伯斯坦效应，这是由于添加了高浓度的银。异丙隆的光降解是使用 Ag/Ag₂O/CuO NC 在光照射下进行的，其光催化降解效率为 98%，高于纯 CuO NPs 和 Ag₂O NPs。正如 XPS 研究和 EPR 光谱所证实的那样，NC 的光催化性能的改善可归因于氧空位的存在。还探讨了光催化剂在异丙隆再生和再利用中的有效性。观察到对革兰氏阴性菌 （大肠杆菌） 和革兰氏阳性菌 （Streptomyces toxytricini） 菌株的抗菌活性，并使用产生的 NC 有效抑制细菌的生长。