Bai Linlin, Chen Yuxing, Ma Huiting, Meng Xu
School of Textile Science and Engineering, Cai Yuanpei School of Art and Design, Shaoxing University, Shaoxing 312000, China.
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
Polymers (Basel). 2025 Jun 14;17(12):1653. doi: 10.3390/polym17121653.
A cellulose-based material with high adsorption capacity and surface area was developed by selecting appropriate copolymer monomers for structural design. This material was used for selective dye adsorption in wastewater treatment. The copolymer was characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FTIR) to investigate its microstructure, structure, thermal stability, and thermal decomposition. We explored the factors affecting dye adsorption, including dye type, adsorption reaction time, initial dye concentration, copolymer dosage, temperature, and the acidity or alkalinity of the reaction environment. The results showed that as the adsorption reaction time increased, the amount of adsorbed Rhodamine B dye gradually increased, and the initial stage (0-20 min) increased rapidly. When the initial dye concentration was 15 mg/L, the adsorption capacity () was at its maximum (3.67 mg/g). In addition, when the amount of copolymer used was 5 mg/10 mL, the adsorption capacity () was the highest (12.37 mg/g). High-temperature conditions were favorable for adsorption, with the maximum adsorption capacity () at 35 °C (13.48 mg/g). The prepared copolymer exhibited significant adsorption performance in acidic environments (pH = 3). The polymer adsorbed with dye was degraded by UV irradiation, avoiding secondary pollution caused by recycling.
通过选择合适的共聚单体进行结构设计，开发出了一种具有高吸附容量和高比表面积的纤维素基材料。该材料用于废水处理中的选择性染料吸附。通过扫描电子显微镜（SEM）、热重分析（TGA）和傅里叶变换红外光谱（FTIR）对共聚物进行表征，以研究其微观结构、结构、热稳定性和热分解情况。我们探讨了影响染料吸附的因素，包括染料类型、吸附反应时间、初始染料浓度、共聚物用量、温度以及反应环境的酸碱度。结果表明，随着吸附反应时间的增加，罗丹明B染料的吸附量逐渐增加，且在初始阶段（0 - 20分钟）增加迅速。当初始染料浓度为15 mg/L时，吸附容量（）达到最大值（3.67 mg/g）。此外，当共聚物用量为5 mg/10 mL时，吸附容量（）最高（12.37 mg/g）。高温条件有利于吸附，在35°C时吸附容量（）最大（13.48 mg/g）。制备的共聚物在酸性环境（pH = 3）中表现出显著的吸附性能。吸附了染料的聚合物通过紫外线照射降解，避免了回收利用引起的二次污染。
