应用AgI/ ag2o纳米复合材料光催化去除水介质中的环丙沙星抗生素:活性测试、反应动力学和催化剂可重用性

IF 1.3 Q4 ENVIRONMENTAL SCIENCES Environmental Health Engineering and Management Journal Pub Date : 2022-09-10 DOI:10.34172/ehem.2022.32
Mehdi Ahmadmoazzam, A. Takdastan, A. Neisi, Mehdi Ahmadi, A. Babaei, S. Jorfi
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引用次数: 1

摘要

背景:本研究通过在可见光辐射下应用AgI/Ag2O光催化剂从水性介质中去除环丙沙星(CIP),这是一种应用非常广泛的抗生素。方法:采用两段沉淀法,方便地合成了AgI/Ag2O。用X射线粉末衍射(XRD)、有限元场发射扫描电子显微镜(FE-SEM)、能谱仪(EDX)和紫外-可见分光光度法对合成的化合物进行了表征。研究了不同的参数,包括溶液的初始pH、初始CIP浓度、反应动力学和催化剂的可重复使用性。结果:AgI和Ag2O的同时使用提高了在紫外光存在下的光催化性能。CIP的pH值和初始浓度影响工艺效率;在pH9的条件下,在100分钟内达到95%的效率。此外,在连续四个循环之后,工艺效率仍然保持在90%以上。结论:AgI/Ag2O纳米复合材料在可见光照射下的光催化降解工艺是一种去除水介质中CIP的合适方法,具有高效、稳定的特点。
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Photocatalytic removal of ciprofloxacin antibiotic from aqueous medium by applying AgI/Ag2 O nanocomposite: Activity test, reaction kinetics, and catalyst reusability
Background: This study examined the removal of ciprofloxacin (CIP), which is a very widely used antibiotic, from an aqueous medium by applying AgI/Ag2 O photocatalyst under visible light radiation. Methods: AgI/Ag2 O was synthesized conveniently by applying a two-stage precipitation method. The synthesized compound was characterized by X-ray powder diffraction (XRD), FE- field emission scanning electron microscopy (FE-SEM), energy dispersive x-ray (EDX), and UV-Vis spectrophotometry. Different parameters including initial pH of the solution, initial CIP concentration, reaction kinetics, and catalyst reusability were investigated. Results: Concurrent use of AgI and Ag2 O caused improved photocatalytic properties in the presence of UV light. The pH and initial concentration of CIP affected the process efficiency; 95% efficiency was achieved within 100 min at pH 9. Furthermore, the process efficiency was still maintained over 90% after four consecutive cycles. Conclusion: The photocatalytic degradation process using AgI/Ag2 O nanocomposite under visible light radiation is a suitable method for removing CIP from aqueous media due to its high efficiency and stability.
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来源期刊
CiteScore
2.40
自引率
37.50%
发文量
17
审稿时长
12 weeks
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