Mortezapour Farnaz, Shadjou Nasrin, Mahmoudian Mehdi
Department of Nanotechnology, Faculty of Chemistry, Urmia University, Urmia, Iran.
Institute of Nanotechnology, Urmia University, Urmia, Iran.
BMC Chem. 2025 Apr 7;19(1):91. doi: 10.1186/s13065-025-01464-8.
The study highlights the development and characterization of a novel polymeric membrane composed of montmorillonite (MMT) and polyethersulfone (PES) using the phase inversion process. The membrane incorporates polyethylene glycol (PEG) as a pore-forming agent and N-methyl pyrrolidone (NMP) as a solvent. The addition of MMT significantly enhances the membrane's properties, including hydrophilicity, porosity, antifouling capacity, hydraulic resistance, water uptake, and dye removal efficiency. Characterization techniques such as FT-IR spectroscopy, FE-SEM, EDX spectroscopy, water flux measurements, water uptake analysis, contact angle studies, and fouling assessments confirm the improved performance of the PES/MMT composite membrane. The presence of MMT increases the negative surface charge of the membrane, making it particularly effective in removing anionic dyes like Congo red (CR), Quinoline yellow (QY), and Methyl orange (MO). The study demonstrates that membranes with up to 5 wt% MMT exhibit high porosity (68.2%) and enhanced water flux (35 L/m·h), achieving dye rejection rates of 99% for CR, 92% for MO, and 81% for QY. The integration of MMT into PES membranes presents a significant advancement in sustainable water purification technologies. These modified membranes demonstrate enhanced mechanical strength, improved structural stability, and an increased surface area, making them highly effective for dye adsorption. Compared to traditional materials, PES/MMT membranes exhibit superior performance in wastewater treatment and dye removal, offering a promising and eco-friendly alternative for addressing environmental challenges.
该研究重点介绍了一种新型聚合物膜的开发与特性，该膜由蒙脱石（MMT）和聚醚砜（PES）通过相转化法制成。该膜包含聚乙二醇（PEG）作为致孔剂和N-甲基吡咯烷酮（NMP）作为溶剂。添加MMT显著增强了膜的性能，包括亲水性、孔隙率、抗污染能力、水力阻力、吸水率和染料去除效率。傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜（FE-SEM）、能谱分析（EDX）、水通量测量、吸水率分析、接触角研究和污染评估等表征技术证实了PES/MMT复合膜性能的提升。MMT的存在增加了膜的负表面电荷，使其在去除刚果红（CR）、喹啉黄（QY）和甲基橙（MO）等阴离子染料方面特别有效。该研究表明，MMT含量高达5 wt%的膜具有高孔隙率（68.2%）和增强的水通量（35 L/m·h），对CR的染料截留率达到99%，对MO为92%，对QY为81%。将MMT整合到PES膜中是可持续水净化技术的一项重大进展。这些改性膜表现出增强的机械强度、改善的结构稳定性和增加的表面积，使其对染料吸附非常有效。与传统材料相比，PES/MMT膜在废水处理和染料去除方面表现出卓越的性能，为应对环境挑战提供了一种有前景且环保的替代方案。
