Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
Shandong Key Laboratory of Corrosion Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266100, China.
Int J Mol Sci. 2022 Jul 29;23(15):8421. doi: 10.3390/ijms23158421.
Copper oxide nanosheet-loaded zeolite 10X nanocomposites (CuO-zeolite NCs) were successfully prepared by modifying zeolite 10X with CuSO aqueous solution. The formation of copper oxide nanosheets on the surface of zeolite 10X was observed by SEM. The thickness of CuO nanosheets was about 30-40 nm, and the width ranged from 200 nm to 300 nm. The XRD patterns showed that the new diffraction peaks of copper oxide appeared at 35.6° and 38.8°. According to the XPS results, the Cu 2p and Cu 2p peaks in CuO-zeolite NC were centered at 934.1 eV and 953.8 eV, which could be attributed to Cu(II). The EDS analysis revealed that the energy spectra of calcium gradually decreased as the copper ion concentration increased during the preparation of CuO-zeolite NCs. Meanwhile, the energy spectra of copper increased gradually, and the highest content of copper in CuO-zeolite NCs reached 22.35 wt.%. The BET surface areas of zeolite 10X and CuO-zeolite NCs were 587 and 363 m/g, respectively, based on the N adsorption-desorption experiment. The antibacterial activities of CuO-zeolite NC were evaluated using () and (). The antibacterial activities were related to both copper ion content in CuO-zeolite NCs and the particle size of copper oxide. The results showed that nano CuO-loaded zeolite 10X inhibited the activity of and . CuO-zeolite NCs are expected to be further used in antifouling coating.
氧化铜纳米片负载沸石 10X 纳米复合材料（CuO-zeolite NCs）通过用 CuSO4 水溶液修饰沸石 10X 成功制备。通过 SEM 观察到氧化铜纳米片在沸石 10X 表面的形成。CuO 纳米片的厚度约为 30-40nm，宽度从 200nm 到 300nm 不等。XRD 图谱显示，氧化铜的新衍射峰出现在 35.6°和 38.8°。根据 XPS 结果，CuO-zeolite NC 中的 Cu 2p 和 Cu 2p 峰位于 934.1eV 和 953.8eV，可归因于 Cu(II)。EDS 分析表明，在制备 CuO-zeolite NC 的过程中，随着铜离子浓度的增加，钙的能量谱逐渐降低，而铜的能量谱逐渐增加，CuO-zeolite NC 中铜的最高含量达到 22.35wt.%。基于 N 吸附-脱附实验，沸石 10X 和 CuO-zeolite NCs 的 BET 比表面积分别为 587 和 363m2/g。通过 () 和 () 评估了 CuO-zeolite NC 的抗菌活性。抗菌活性与 CuO-zeolite NC 中的铜离子含量和氧化铜的粒径均有关。结果表明，负载纳米 CuO 的沸石 10X 抑制了 和 的活性。预计 CuO-zeolite NC 将进一步用于防污涂料。
