Jagodić Ivana, Guth Imre, Lukić-Petrović Svetlana, Tamindžija Dragana, Šojić Merkulov Daniela, Finčur Nina, Bognár Szabolcs, Putnik Predrag, Banić Nemanja
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
Department of Physics, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 4, 21000 Novi Sad, Serbia.
Nanomaterials (Basel). 2023 Jan 23;13(3):460. doi: 10.3390/nano13030460.
Currently, environmental pollution by various organic pollutants (e.g., organic dyes) is a serious, emerging global issue. The aqueous environment is highly exposed to the harmful effects of these organic compounds. Furthermore, the commonly applied conventional purification techniques are not sufficient enough. Heterogeneous photocatalysis and the photo-Fenton process are effective, low-cost and green alternatives for the removal of organic pollutants. In this study, different iron(III) oxide/titanium(IV) oxide/polyvinyl chloride (FeO/TiO/PVC) nanocomposites in tablet form were investigated in the photodegradation of methylene blue (MB) under simulated sunlight, and their possible antibacterial effects were examined. The newly synthesized nanocomposites were characterized by scanning electron microscope, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, and Raman spectroscopy. The results showed a crystal form in the case of FeO and FeO samples, while the FeO sample showed a combination of and synthetic mineral . The highest photocatalytic efficiency was achieved in the presence of FeO/TiO/PVC, when 70.6% of MB was removed. In addition, the possible photo-cleaning and reuse of the mentioned photocatalyst was also examined. Based on the results, it can be seen that the activity did not decrease after five successive runs. Nanocomposites also exhibited mild antibacterial effects against the two tested Gram-positive bacteria ( and ).
目前，各种有机污染物（如有机染料）造成的环境污染是一个严重的、新出现的全球问题。水环境极易受到这些有机化合物的有害影响。此外，常用的传统净化技术并不足够。多相光催化和光芬顿过程是去除有机污染物的有效、低成本且环保的替代方法。在本研究中，研究了片状的不同氧化铁/二氧化钛/聚氯乙烯（FeO/TiO/PVC）纳米复合材料在模拟阳光下对亚甲基蓝（MB）的光降解情况，并检测了它们可能的抗菌效果。通过扫描电子显微镜、X射线衍射、紫外可见漫反射光谱和拉曼光谱对新合成的纳米复合材料进行了表征。结果表明，FeO和FeO样品为晶体形式，而FeO样品呈现出 和合成矿物 的组合。在FeO/TiO/PVC存在的情况下实现了最高的光催化效率，此时MB的去除率为70.6%。此外，还研究了上述光催化剂可能的光清洁和再利用情况。根据结果可以看出，连续运行五次后活性并未降低。纳米复合材料对两种受试革兰氏阳性菌（ 和 ）也表现出温和的抗菌作用。
