Debnath Pampa, Ray Samit Kumar
Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, West Bengal, India.
Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, West Bengal, India.
Int J Biol Macromol. 2025 Aug;319(Pt 1):145206. doi: 10.1016/j.ijbiomac.2025.145206. Epub 2025 Jun 11.
Methyl methacrylate (MMA) and methacrylic acid (MA) at different MMA: MA molar ratios were synthesized and crosslinked with N, N'-methylenebisacrylamide (MBA) by emulsion polymerization in the presence of carboxymethyl cellulose (CMC). Copper nanoparticles (Cu-NPs) were synthesized by the reduction of CuSO with ascorbic acid in situ in the growing polymer network. The CMC- grafted, Cu-NPs- filled, and MBA-crosslinked nanocomposites were characterized and the MMA: MA molar ratios, wt% of MBA crosslinker, and wt% of CMC, were optimized for batch adsorption of 50 mg/L of tetracycline from water using the Box-Behnken design (BBD) of response surface methodology (RSM). The nanocomposite prepared with an MMA: MA molar ratio of 5:1, 1 wt% MBA, and 1 wt% CMC (noted as C5G1Cu) exhibited a batch adsorption capacity, q, of 242.46 mg/g and a removal percentage of 97 %. The same nanocomposite showed a q of 24.2 mg/g and a removal percentage of 32 % for the column adsorption of 100 mg/L tetracycline at a flow rate of 20 mL/min and a bed height of 25 mm. The nanocomposite also exhibited a photochemical degradation of 87 % of tetracycline in visible light with a pseudo first-order rate constant of 0.02 min.
在羧甲基纤维素（CMC）存在下，通过乳液聚合合成了不同甲基丙烯酸甲酯（MMA）与甲基丙烯酸（MA）摩尔比的甲基丙烯酸甲酯和甲基丙烯酸，并使其与N，N'-亚甲基双丙烯酰胺（MBA）交联。通过在生长的聚合物网络中原位用抗坏血酸还原硫酸铜来合成铜纳米颗粒（Cu-NPs）。对CMC接枝、Cu-NPs填充和MBA交联的纳米复合材料进行了表征，并使用响应面法（RSM）的Box-Behnken设计（BBD）对MMA:MA摩尔比、MBA交联剂的重量百分比和CMC的重量百分比进行了优化，用于从水中批量吸附50mg/L的四环素。以5:1的MMA:MA摩尔比、1wt%的MBA和1wt%的CMC制备的纳米复合材料（记为C5G1Cu）表现出242.46mg/g的批量吸附容量q和97%的去除率。对于100mg/L四环素在20mL/min流速和25mm床高下的柱吸附，相同的纳米复合材料表现出24.2mg/g的q和32%的去除率。该纳米复合材料在可见光下还表现出对四环素87%的光化学降解，其准一级速率常数为0.02min⁻¹。
