Wei Shoulian, Huang Shenwei, Zhou Jun, Xiao Chun, Cao Jiangfei, Xiao Jibo, Xie Chunsheng
Medical School, Guangdong ATV College of Performing Arts, Zhaoqing 526631, China.
College of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China.
Polymers (Basel). 2025 Jan 21;17(3):257. doi: 10.3390/polym17030257.
In this study, magnetic carbon nanopolymers (FeO/C@PM) were synthesized by suspension polymerization using magnetic carbon nanoparticles as the matrix, 2-thiophene formaldehyde and acrylamide as the monomers, and ethylene glycol dimethacrylate (EGDMA) as the crosslinking agent. The obtained material was characterized using multiple techniques, including scanning electron microscopy (SEM), infrared spectroscopy (FTIR), X-ray diffraction (XRD), N adsorption-desorption, and thermogravimetric analysis (TGA). The adsorption effects of Zn, Cd, and Pb in the mixed solution were evaluated using magnetic carbon nanoparticles (FeO/C) and FeO/C@PM as adsorbents. The adsorption isotherms, kinetic models, and cyclic regeneration of various metal ions, including Zn, Cd and Pb, were studied. The results showed that the FeO/C@PM maintained a slightly aggregated spherical morphology similar to FeO/C and exhibited excellent adsorption capacity for all of Zn, Cd, and Pb, with maximum adsorption capacities of 343.3, 250.7, and 177.6 mg·g, respectively. The adsorption mechanisms were mainly based on the chemical interactions between metal ions and functional groups on the surface of polymers. The kinetic study revealed that the adsorption process followed a pseudo-second-order kinetic model. When FeO/C@PM was reused five times, its adsorption rates for Zn, Cd, and Pb remained above 81%, indicating its great potential for the treatment of wastewater containing Zn, Cd, and Pb.
在本研究中，以磁性碳纳米粒子为基质，2-噻吩甲醛和丙烯酰胺为单体，乙二醇二甲基丙烯酸酯（EGDMA）为交联剂，通过悬浮聚合法合成了磁性碳纳米聚合物（FeO/C@PM）。使用多种技术对所得材料进行了表征，包括扫描电子显微镜（SEM）、红外光谱（FTIR）、X射线衍射（XRD）、N吸附-脱附以及热重分析（TGA）。以磁性碳纳米粒子（FeO/C）和FeO/C@PM作为吸附剂，评估了混合溶液中Zn、Cd和Pb的吸附效果。研究了包括Zn、Cd和Pb在内的各种金属离子的吸附等温线、动力学模型以及循环再生性能。结果表明，FeO/C@PM保持了与FeO/C相似的轻微聚集球形形态，并且对Zn、Cd和Pb均表现出优异的吸附能力，最大吸附容量分别为343.3、250.7和177.6 mg·g。吸附机制主要基于金属离子与聚合物表面官能团之间的化学相互作用。动力学研究表明，吸附过程遵循准二级动力学模型。当FeO/C@PM重复使用五次时，其对Zn、Cd和Pb的吸附率仍保持在81%以上，表明其在处理含Zn、Cd和Pb废水方面具有巨大潜力。
