Sustainable green synthesis of ZnFe2O4@ZnO nanocomposite using Oleaster tree bark methanolic extract for photocatalytic degradation of aqueous humic acid in the presence of UVc irradiation

IF 2.1 4区环境科学与生态学 Q2 ENGINEERING, CIVIL

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-08-09 DOI:10.2166/aqua.2023.313

M. Asri, A. Naghizadeh, A. Hasani, Sobhan Mortazavi, A. Javid, F. Masoudi

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Abstract

One of the most important humic substances in water is humic acid. These substances enter water sources through soils, sediments of aquatic animals, plants and sewage. Therefore, removing them from water sources is very important. In this study, the photocatalytic removal of humic acid was investigated using zinc ferrite nanoparticles loaded with zinc oxide (ZnFe2O4@ZnO). This research was conducted in an experimental-interventional way in a batch reactor on a laboratory scale. A novel and facile method was applied for catalyst synthesis in different conditions, and it was structurally and morphologically characterized by XRD, FT-IR, SEM, DLS and EDS mapping techniques. The effects of pH (3–11), nanoparticle dose (0.005–0.1 g/L), and humic acid concentration (2–15 mg/L) were examined up to 120 min of time. The results showed that the efficiency of humic acid degradation by ZnFe2O4@ZnO reached 95% in optimal conditions. Also, it was found that this nanocomposite has an acceptable reusability and recovery after being tested in five stages.

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uv照射下油橄榄树皮甲醇提取物光催化降解腐殖酸纳米复合材料ZnFe2O4@ZnO的可持续绿色合成

水中最重要的腐植酸物质之一是腐植酸。这些物质通过土壤、水生动物、植物的沉积物和污水进入水源。因此，将它们从水源中移除是非常重要的。在这项研究中，研究了负载氧化锌的铁酸锌纳米颗粒光催化去除腐植酸(ZnFe2O4@ZnO)。本研究是在实验室规模的间歇式反应器中以实验介入方式进行的。采用一种新颖、简便的方法在不同条件下合成催化剂，并通过XRD、FT-IR、SEM、DLS和EDS图谱等技术对催化剂进行了结构和形貌表征。考察pH(3-11)、纳米颗粒剂量(0.005-0.1 g/L)和腐植酸浓度(2-15 mg/L)在120 min内的影响。结果表明，在最佳条件下ZnFe2O4@ZnO对腐植酸的降解效率可达95%。经过5个阶段的测试，发现该纳米复合材料具有良好的可重用性和可恢复性。

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来源期刊

AQUA-Water Infrastructure Ecosystems and Society Multiple-

CiteScore

4.10

自引率

21.10%

发文量

审稿时长

20 weeks