A highly effective and neoteric cerium-doped metal-organic framework (MOF Ce-UiO-66-NH₂) was triumphantly prepared via a simple and convenient approach of solvothermal reaction; the Ce-UiO-66-NH₂ can be used for removing phosphate from water. The physicochemical characteristics of new adsorbent were determined by X-ray diffraction (XRD), Brunauer–Emmett–Teller analysis (BET), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and infrared spectroscopy (FTIR). The results confirmed that the introduction of cerium caused a trivial effect on the UiO-66-NH₂ structure; however, a hybrid MOF with polyhedral crystalloid shapes was obtained. When cerium was doped in UiO-66-NH₂, the newly developed adsorbent Ce-UiO-66-NH₂ exhibited outstanding performance in terms of adsorption of phosphate, and the maximum uptake capacity was up to 211.86 mg g⁻¹. The reaction for capture of phosphate of 0.75Ce-UiO-66-NH₂ was quite fast, and could reach equilibrium in 60 min. Furthermore, FTIR and X-ray photoelectron spectroscopy (XPS) characterization indicated that the main mechanism of phosphate capture involved the production of an inner-sphere complex of Zr/Ce–O–P and electrostatic attraction. After adsorption, the phosphate on Ce-UiO-66-NH₂ was efficiently desorbed with NaOH (0.10 mol L⁻¹); thus the material could be used repeatedly for at least five cycles, and the adsorption capacity was still more than 100 mg g⁻¹ at the fifth cycle. The repeated utilization potentially provides access to effectively prevent water pollution and further implement cleaner production at the minimum cost. The developed Ce-UiO-66-NH₂ is an efficient and regenerative adsorbent that can be used for phosphate uptake to mitigate increasing eutrophication of water.

通过一种简单而方便的溶剂热反应方法成功地制备了一种新型的新型铈掺杂金属有机骨架（MOF Ce-UiO-66-NH ₂）。Ce-UiO-66-NH ₂可用于从水中去除磷酸盐。通过X射线衍射（XRD），Brunauer-Emmett-Teller分析（BET），透射电子显微镜（TEM），扫描电子显微镜（SEM）和红外光谱（FTIR）确定了新吸附剂的理化特性。结果证实，铈的引入对UiO-66-NH ₂结构产生微不足道的影响。然而，获得了具有多面体晶体形状的混合MOF。在UiO-66-NH _2中掺杂铈时，新开发的Ce-UiO-66-NH ₂吸附剂在吸附磷酸盐方面表现出优异的性能，最大吸收量高达211.86 mg g ^-1。捕获0.75Ce-UiO-66-NH ₂的磷酸盐的反应相当快，可以在60分钟内达到平衡。此外，FTIR和X射线光电子能谱（XPS）表征表明，磷酸盐捕获的主要机理涉及Zr / Ce-O-P内球复合物的产生和静电吸引。吸附后，Ce-UiO-66-NH ₂上的磷酸盐被NaOH（0.10 mol L ^-1）; 因此该材料可以重复使用至少五个循环，并且在第五个循环中的吸附容量仍大于100 mg g ^-1。重复利用有可能有效地防止水污染，并以最低的成本进一步实现清洁生产。研发的Ce-UiO-66-NH ₂是一种高效且可再生的吸附剂，可用于吸收磷酸盐以减轻水的富营养化。