The porous materials as adsorbents play an important role in dye removal. In this paper, monodisperse, highly cross-linked porous microspheres with a specific surface area of 255.83 m²/g and average pore size of 8.5 nm were synthesized by seed swollen emulsion polymerization. The sulfonation reactions of porous microspheres were carried out to improve the hydrophilic performance and electronegativity of the microsphere surface. Cationic methylene blue (MB) and anionic methyl orange (MO) were employed as simulated dye wastewater to investigate the adsorption kinetics of porous microspheres. The experimental results demonstrate that porous sulfonate microspheres possess selective adsorption for MB due to electrostatic interaction between the negative charges on the surface of microspheres and the positive charges of MB molecules. Porous microspheres exhibit an adsorption capacity of 313.125 mg/g after 2 h. The adsorption kinetics of MB dyes in porous microspheres follow a pseudo-second-order model.

作为吸附剂的多孔材料在染料去除中起着重要作用。本文采用种子溶胀乳液聚合法合成了比表面积为255.83 m²/g、平均孔径为8.5 nm的单分散、高度交联的多孔微球。对多孔微球进行磺化反应以提高微球表面的亲水性能和电负性。以阳离子亚甲基蓝（MB）和阴离子甲基橙（MO）为模拟染料废水，研究多孔微球的吸附动力学。实验结果表明，由于微球表面的负电荷与MB分子的正电荷之间的静电相互作用，多孔磺酸盐微球对MB具有选择性吸附作用。多孔微球在 2 小时后表现出 313.125 mg/g 的吸附能力。MB染料在多孔微球中的吸附动力学遵循准二级模型。