Jovanović Dušica, Bognár Szabolcs, Despotović Vesna, Finčur Nina, Jakšić Sandra, Putnik Predrag, Deák Cora, Kozma Gábor, Kordić Branko, Šojić Merkulov Daniela
Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
Scientific Veterinary Institute "Novi Sad", Rumenački Put 20, 21000 Novi Sad, Serbia.
Foods. 2024 Aug 22;13(16):2643. doi: 10.3390/foods13162643.
Pure water scarcity is the most significant emerging challenge of the modern society. Various organics such as pesticides (clomazone, quinmerac), pharmaceuticals (ciprofloxacin, 17α-ethynilestradiol), and mycotoxins (deoxynivalenol) can be found in the aquatic environment. The aim of this study was to fabricate ZnO nanomaterial on the basis of banana peel extract (ZnO/BPE) and investigate its efficiency in the photocatalytic degradation of selected organics under various experimental conditions. Newly synthesized ZnO/BPE nanomaterials were fully characterized by the XRD, FTIR, SEM-EPS, XPS, and BET techniques, which confirmed the successful formation of ZnO nanomaterials. The photocatalytic experiments showed that the optimal catalyst loading of ZnO/BPE was 0.5 mg/cm, while the initial pH did not influence the degradation efficiency. The reusability of the ZnO/BPE nanomaterial was also tested, and minimal activity loss was found after three photocatalytic cycles. The photocatalytic efficiency of pure banana peel extract (BPE) was also studied, and the obtained data showed high removal of ciprofloxacin and 17α-ethynilestradiol. Finally, the influence of water from Danube River was also examined based on the degradation efficiency of selected pollutants. These results showed an enhanced removal of ciprofloxacin in water from the Danube River, while in the case of other pollutants, the treatment was less effective.
纯净水短缺是现代社会最严峻的新挑战。在水生环境中可发现各种有机物，如农药（异恶草酮、二氯喹啉酸）、药物（环丙沙星、17α-乙炔雌二醇）和霉菌毒素（脱氧雪腐镰刀菌烯醇）。本研究的目的是基于香蕉皮提取物制备氧化锌纳米材料（ZnO/BPE），并研究其在各种实验条件下对选定有机物的光催化降解效率。通过XRD、FTIR、SEM-EPS、XPS和BET技术对新合成的ZnO/BPE纳米材料进行了全面表征，证实了ZnO纳米材料的成功形成。光催化实验表明，ZnO/BPE的最佳催化剂负载量为0.5 mg/cm，而初始pH值不影响降解效率。还测试了ZnO/BPE纳米材料的可重复使用性，发现经过三个光催化循环后活性损失最小。还研究了纯香蕉皮提取物（BPE）的光催化效率，所得数据表明对环丙沙星和17α-乙炔雌二醇的去除率很高。最后，根据选定污染物的降解效率，还考察了多瑙河河水的影响。这些结果表明，多瑙河水中环丙沙星的去除率有所提高，而对于其他污染物，处理效果较差。
