Voicu S I, Vasile E, Palla-Papavlu A, Oprea R, Ionita M, Pandele A M
Advanced Polymers Materials Group, National University of Science and Technology POLITEHNICA Bucharest 011061 Bucharest Romania
Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology POLITEHNICA Bucharest 011061 Bucharest Romania.
RSC Adv. 2024 Dec 16;14(53):39550-39558. doi: 10.1039/d4ra07606k. eCollection 2024 Dec 10.
This work presents a new and facile synthesis approach for multiwalled carbon nanotubes (MWCNTs) decorated with ruthenium oxide (RuO) nanoparticles using a simple and efficient sonochemical method. The strong interaction and homogenous distribution of RuO nanoparticles on the surface of MWCNTs were revealed by Raman spectroscopy and transmission electron microscopy. The presence of metal oxide nanoparticles anchored onto the surface of MWCNTs was further confirmed by X-ray diffraction and energy-dispersive X-ray analysis. Furthermore, the chemical state of the MWCNTs before and after decoration with RuO was revealed by X-ray photoelectron spectroscopy. Scanning electron microscopy illustrated that the decoration process did not induce any modification on the morphology of the surface of MWCNTs. The percentage of RuO nanoparticles anchored onto the MWCNT surface was determined by thermogravimetric analysis, where 15% could be calculated considering the weight loss. Furthermore, both MWCNTs and decorated MWCNTs with RuO nanoparticles were used as nanofillers to develop some composite membranes using polyetherimine as polymer matrices. The morphological and structural properties of the membranes were characterized by SEM and XRD. The mechanical properties of the composite membranes, contact angle and antimicrobial properties using and were also studied.
这项工作提出了一种新的简便合成方法，通过简单高效的声化学方法制备用氧化钌（RuO）纳米颗粒修饰的多壁碳纳米管（MWCNT）。拉曼光谱和透射电子显微镜揭示了RuO纳米颗粒在MWCNT表面的强相互作用和均匀分布。X射线衍射和能量色散X射线分析进一步证实了锚定在MWCNT表面的金属氧化物纳米颗粒的存在。此外，通过X射线光电子能谱揭示了用RuO修饰前后MWCNT的化学状态。扫描电子显微镜表明，修饰过程未对MWCNT表面形态产生任何改变。通过热重分析确定了锚定在MWCNT表面的RuO纳米颗粒的百分比，考虑到重量损失可计算出为15%。此外，MWCNT和用RuO纳米颗粒修饰的MWCNT都用作纳米填料，以聚醚酰亚胺为聚合物基体制备一些复合膜。通过扫描电子显微镜（SEM）和X射线衍射（XRD）对膜的形态和结构性质进行了表征。还研究了复合膜的力学性能、接触角以及使用和的抗菌性能。
