Selective removal of contaminants from water by membranes is of practical importance for water purification and environmental protection. In the present study, through an in-situ polymerization process, a novel composite of Fe₃O₄/molecularly imprinted resorcinol -formaldehyde-melamine resin (Fe₃O₄/MIRFMR) was synthesized. Then, the novel membrane was prepared from a tea filter bag (TFB) as a base substrate which was subsequently coated by a casting solution containing polyvinylidene fluoride (PVDF) matrix, Prunus scoparia gum as a hydrophilic agent and Fe₃O₄/MIRFMR as selective filler by phase inversion technique. Resorcinol as functional monomers with multiple hydrophilic groups such as –OH, –NH₂ and –NH–, were used for selective removal of Rhodamine B (RhB) as target molecule. The Fe₃O₄/MIRFMR/PVDF/TFB membranes were characterized by FE-SEM, XRD, FTIR, BET, VSM, water contact angle (WCA) and mechanical analysis. The filtration and adsorption of RhB on the prepared membrane was investigated parameters in a cross-module filtration setup. Casting solution containing 0.01 g of Fe₃O₄/MIRFMR as optimum value showed good wettability, high water flux (42.5 L/m² h), flux recovery ratio (88.9%), RhB removal efficiency (95.8%). The selectivity of 4.9, 3.3, 2.1 and 2.5 was found to be for RhB compared to AB, MG, EB, and TB dye. It seems that the fabricated membrane could be an effective and selective option for wastewater containing pollutants. The high removal efficiency, fouling resistance, good wettability and stability of the fabricated membrane are promising for use in practical water filtration, especially for selective removal of dyes.

通过膜从水中选择性去除污染物对于水净化和环境保护具有实际重要性。在本研究中，通过原位聚合工艺，合成了一种新型的 Fe ₃ O ₄ /分子印迹间苯二酚-甲醛-三聚氰胺树脂复合材料（Fe ₃ O ₄ /MIRFMR）。然后，以茶滤袋 (TFB) 作为基础基材制备新型膜，随后用含有聚偏二氟乙烯 (PVDF) 基质、作为亲水剂的白杨树胶和 Fe ₃ O ₄的浇铸溶液进行涂覆。/MIRFMR 通过相转化技术作为选择性填料。间苯二酚作为具有多个亲水基团（如–OH、–NH ₂和–NH–）的功能单体用于选择性去除作为目标分子的罗丹明B (RhB)。Fe ₃ O ₄ /MIRFMR/PVDF/TFB 膜通过FE-SEM、XRD、FTIR、BET、VSM、水接触角(WCA) 和力学分析进行表征。在交叉模块过滤装置中研究了 RhB 在制备的膜上的过滤和吸附参数。含有 0.01 g Fe ₃ O ₄ /MIRFMR 作为最佳值的浇铸溶液表现出良好的润湿性，高水通量（42.5 L/m ²h)、助焊剂回收率（88.9%）、RhB去除效率（95.8%）。与 AB、MG、EB 和 TB 染料相比，RhB 的选择性为 4.9、3.3、2.1 和 2.5。似乎制造的膜可能是含有污染物的废水的有效和选择性选择。所制备的膜具有高去除效率、抗污染性、良好的润湿性和稳定性，有望用于实际水过滤，特别是染料的选择性去除。