Lead is a toxic heavy metal and is non-biodegradable, often causes soil pollution, and how to fix the soil is a major environmental issue currently facing. The porous material used as lead adsorption materials is one way to solve this problem. In this study, porous adsorption materials were prepared using magnesium phosphate cement (MPC) as a matrix. Their adsorption properties concerning lead ions were studied to understand its fixation ability of lead ions better. The obtained porous materials were characterized by the Brunauer–Emmett–Teller method (BET), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and thermogravimetry (TG) techniques. Batch experiments were conducted to evaluate the effects of leaching time, initial concentration of lead ion solution, and temperature on the prepared materials' performance. The results showed that the pore size distribution of the porous materials based on magnesium phosphate cement (PMMPC) was mainly constituted of mesopores of 4–10 nm. At the same time, the specific surface area was 16.841 m²/g. The PMMPC exhibited an excellent adsorption performance for lead ions at 298 K, with a maximum adsorption capacity of 208.233 mg/g. The fitting results of the kinetic and isothermal adsorption equations demonstrated that the adsorption of lead ions by PMMPC followed a pseudo-second-order kinetic and Langmuir model, indicating the occurrence of chemisorption. Within the experimental temperature (298–318 K) and initial concentration (100–250 mg/L) range, the adsorption of Pb²⁺ on PMMPC was spontaneous owing to the negative values of ΔG. Therefore, PMMPC is a highly effective adsorbent for removing lead ions from aqueous solutions and has vast application potential in wastewater treatment.

铅是一种有毒的重金属，不可生物降解，经常造成土壤污染，如何修复土壤是当前面临的主要环境问题。用作铅吸附材料的多孔材料是解决该问题的一种方法。在这项研究中，使用磷酸镁水泥（MPC）作为基质制备了多孔吸附材料。研究了它们对铅离子的吸附性能，以更好地了解其对铅离子的固定能力。所获得的多孔材料通过Brunauer-Emmett-Teller方法（BET），扫描电子显微镜（SEM），能量色散X射线光谱（EDS），X射线衍射（XRD）和热重分析（TG）技术进行了表征。进行分批实验以评估浸出时间，铅离子溶液初始浓度，和温度对准备好的材料的性能的影响。结果表明，基于磷酸镁水泥（PMMPC）的多孔材料的孔径分布主要由4-10 nm的中孔组成。同时，比表面积为16.841 m² /克。PMMPC在298 K时对铅离子表现出优异的吸附性能，最大吸附容量为208.233 mg / g。动力学和等温吸附方程的拟合结果表明，PMMPC对铅离子的吸附遵循伪二级动力学和Langmuir模型，表明发生了化学吸附。在实验温度（298–318 K）和初始浓度（100–250 mg / L）范围内，由于ΔG值为负值，PMP ²⁺在PMMPC上的吸附是自发的。因此，PMMPC是从水溶液中去除铅离子的高效吸附剂，在废水处理中具有广阔的应用潜力。