Green synthesis of silver decorated ZnO–CeO nanostructure (Ag@ZnO–CeO NS) mediated LE and its photocatalytic potential against ciprofloxacin antibiotic and Methylene orange dye under sunlight. The synthesized ZnO–CeO and Ag@ZnO–CeO NS were characterized using X-ray diffraction (XRD) analysis. The crystallite size and crystallinity were calculated to 74 nm and 89% respectively using XRD analysis. X-ray photoelectron spectroscopy (XPS) analysis confirmed the presence of Ag, Zn, Ce and oxygen vacancies in green synthesized Ag@ZnO–CeO NS. Also, PL spectroscopy analysis showed the oxygen vacancies due to defects in nanostructure. The bandgap of prepared nanostructure was calculated to 2.0 eV by UV–visible spectroscopy analysis. Ag@ZnO–CeO NS average particles size was evaluated to 40 nm by scanning electron microscopy (SEM) analysis and energy-dispersive X-ray (EDX) analysis confirmed the presence of Ag, Zn and Ce in nanostructure. The Ag@ZnO–CeO NS showed an excellent Brunauer-Emmett-Teller (BET) surface area of 165 mg and 15 nm of pore diameter. Moreover, Fourier transform infrared (FTIR) spectroscopy was used to analyze chemical bonding and interaction and RAMAN spectroscopy confirmed the presence of oxygen vacancies. The thermal decomposition and heat flow was accessed by thermogravimetric analysis (TGA) and Differential scanning calorimetry (DSC) The Ag@ZnO–CeO NS demonstrated great potential for environmental remediation which offered effective approach for the removal of Ciprofloxacin antibiotic and Methylene orange dye from wastewater with 74% and 85% photocatalytic activity respectively. The stability of catalyst after 5 cycles of reusability was evaluated by XRD analysis which showed the crystalline structure. This research contributes to the development of advanced nanomaterials with improved photocatalytic properties and the removal of emerging contaminants.

中文翻译：

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使用辣木 LE 合成银修饰的 ZnO-CeO2 纳米结构的绿色方法及其作为光催化剂降解环丙沙星和亚甲基橙的研究

银装饰的ZnO-CeO纳米结构（Ag@ZnO-CeO NS）介导的LE的绿色合成及其在阳光下对抗环丙沙星抗生素和亚甲橙染料的光催化潜力。使用 X 射线衍射 (XRD) 分析对合成的 ZnO-CeO 和 Ag@ZnO-CeO NS 进行表征。使用 XRD 分析计算微晶尺寸和结晶度分别为 74 nm 和 89%。 X射线光电子能谱（XPS）分析证实绿色合成的Ag@ZnO-CeO NS中存在Ag、Zn、Ce和氧空位。此外，PL 光谱分析显示了由于纳米结构缺陷而产生的氧空位。通过紫外可见光谱分析计算出所制备的纳米结构的带隙为2.0 eV。通过扫描电子显微镜（SEM）分析和能量色散X射线（EDX）分析将Ag@ZnO-CeO NS平均粒径评估为40 nm，证实纳米结构中存在Ag、Zn和Ce。 Ag@ZnO-CeO NS 显示出优异的 Brunauer-Emmett-Teller (BET) 表面积（165 mg）和 15 nm 孔径。此外，傅里叶变换红外（FTIR）光谱用于分析化学键合和相互作用，拉曼光谱证实了氧空位的存在。通过热重分析（TGA）和差示扫描量热法（DSC）评估热分解和热流 Ag@ZnO-CeO NS 表现出巨大的环境修复潜力，为去除废水中的环丙沙星抗生素和亚甲基橙染料提供了有效的方法光催化活性分别为74%和85%。通过 XRD 分析评价催化剂重复使用 5 次循环后的稳定性，显示晶体结构。这项研究有助于开发具有改进的光催化性能和去除新兴污染物的先进纳米材料。