Băjan Marian, Cursaru Diana Luciana, Mihai Sonia
Faculty of Petroleum Refining and Petrochemistry, Petroleum-Gas University of Ploiesti, 39 Bucharest Blvd., 100680 Ploiesti, Romania.
Membranes (Basel). 2025 May 23;15(6):158. doi: 10.3390/membranes15060158.
Adding nanomaterials to polymer membranes can improve certain properties, such as the photocatalytic degradation of contaminants and antibacterial qualities. However, the interaction between nanomaterials and polymers is often limited by the presence of functional groups that can trap nanostructures within the polymer matrix. This study focuses on the synthesis of silver-decorated graphene oxide nanoparticles and their integration into cellulose acetate membranes. Characterization of the membranes was conducted using various techniques, including electron microscopy (SEM), thermogravimetric analysis, FTIR, goniometry, and filterability tests. The results indicate that CA membranes with decorated nanoparticles exhibit improved thermal stability, making them more effective for removing heavy hydrocarbons without the risk of nanomaterial elution during temperature fluctuations in the contaminated water flow subjected to filtration. Furthermore, these decorated structures enhance hydrophobicity due to interactions between the oxygenated groups of GrO and silver ions. While these additional networks may reduce the permeate flow rate, they significantly increase the efficiency of contaminant removal.
将纳米材料添加到聚合物膜中可以改善某些性能，例如污染物的光催化降解和抗菌性能。然而，纳米材料与聚合物之间的相互作用通常受到官能团的限制，这些官能团会将纳米结构捕获在聚合物基质中。本研究重点关注银修饰的氧化石墨烯纳米颗粒的合成及其在醋酸纤维素膜中的整合。使用各种技术对膜进行了表征，包括电子显微镜（SEM）、热重分析、傅里叶变换红外光谱（FTIR）、测角法和过滤性测试。结果表明，带有修饰纳米颗粒的醋酸纤维素膜表现出更高的热稳定性，使其在过滤受污染水流温度波动期间更有效地去除重质烃，且不存在纳米材料洗脱的风险。此外，由于氧化石墨烯（GrO）的含氧基团与银离子之间的相互作用，这些修饰结构增强了疏水性。虽然这些额外的网络可能会降低渗透流速，但它们显著提高了污染物的去除效率。
