Magnetic conjugated porous polymers (CPPs) have attracted more attention because of their porosity, low mass density and fast magnetic separation performances. But the magnetic properties of most magnetic materials were intolerable and would decline rapidly under acidic conditions. Consequently, developing an acidity-resistant magnetic CPPs was very valuable for acid sewage treatment. In this work, the acidity-resistant superparamagnetic CPPs (SCPPs) were prepared through a palladium-catalyzed Sonogashira-Hagihara conjugate cross-coupling reaction and applied for dye adsorption. The properties of the SCPPs were detected by FTIR, XPS, TEM, SEM, TGA, BET and VSM. The kinetics, isotherm and thermodynamic analysis of the adsorption process indicated that the adsorption process fitted the Langmuir adsorption model and the pseudo-second-order model described the kinetics well. Comparing with other dye adsorption materials, SCPPs not only demonstrated better adsorption performance (740.12 mg g⁻¹) for methylene blue, but also possessed excellent magnetic property even in low pH values (pH = 3) which was beneficial for the separation of SCPPs after adsorption. This work proposed a novel method for constructing an acid-resistant superparamagnetic porous material, which could be used as a potential high-efficiency adsorbent for acidic wastewater.

磁性共轭多孔聚合物（CPP）的孔隙率，低质量密度和快速的磁分离性能使其备受关注。但是大多数磁性材料的磁性能是不能容忍的，并且在酸性条件下会迅速下降。因此，开发一种耐酸性的磁性CPP对于酸性污水处理非常有价值。在这项工作中，通过钯催化的Sonogashira-Hagihara共轭交叉偶联反应制备了耐酸性超顺磁性CPP（SCPP），并将其用于染料吸附。通过FTIR，XPS，TEM，SEM，TGA，BET和VSM检测SCPP的特性。动力学，吸附过程的等温线和热力学分析表明，吸附过程符合Langmuir吸附模型，拟二级模型很好地描述了动力学。与其他染料吸附材料相比，SCPP不仅表现出更好的吸附性能（740.12 mg g^-1）用于亚甲基蓝，但即使在低pH值（pH = 3）下也具有出色的磁性，这对于吸附后SCPP的分离是有利的。这项工作提出了一种构造耐酸超顺磁性多孔材料的新方法，该方法可用作酸性废水的潜在高效吸附剂。