In this research, a new porphyrin-based porous organic polymer (POP), named here PPOP-UOZ-1 (UOZ stands for the University of Zabol), was synthesized through a solvothermal condensation reaction between 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP, Porph-NH₂) and 2,2'-[ethane-1,2-diylbis(oxy)]dibenzaldehyde (Dialdehyde, DA). The chemical structure, morphology, and surface properties of the PPOP-UOZ-1 were assessed using numerous techniques, including TGA, BET, FT- IR, PXRD, and SEM/EDX. The nominal PPOP-UOZ-1 was then used as an adsorbent for selective (better than 92%) extraction of Pd(II) from aqueous solutions. The adsorption process was optimized by studying the effect of various factors such as pH, the type and volume of eluent, adsorption and desorption time, and the amount of adsorbent. The results exhibited that the maximum adsorption capacity of PPOP-UOZ-1 for Pd(II) was 208.3 mg/g at a pH of 3.0, based on the Langmuir isotherm model (a determination coefficient of 0.9887). The adsorbent showed excellent selectivity for Pd(II) over other coexisting metal ions, with a recovery rate higher than 92%. Furthermore, the PPOP-UOZ-1 could be reused for at least six adsorption-desorption cycles without substantial loss of efficiency. This proposed adsorbent and approach was further applicable for the efficient extraction of Pd(II) from environmental water samples.

中文翻译：

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制备一种新型多孔有机聚合物，用于从水样中选择性提取/测定钯离子


在这项研究中，通过 5,10,15,20-t etrakis（4-aminophenyl）porphyrin（TAPP，Porph-NH₂）和 2,2'-[ethane-1,2-diylbis（oxy）]dibenza 之间的溶剂热缩合反应合成了一种新的基于卟啉的多孔有机聚合物 （POP），此处命名为 PPOP-UOZ-1（UOZ 代表 Zabol 大学）ldehyde （二醛，DA）。使用多种技术评估了 PPOP-UOZ-1 的化学结构、形态和表面特性，包括 TGA、BET、FT-IR、PXRD 和 SEM/EDX。然后，使用标称 PPOP-UOZ-1 作为吸附剂，从水溶液中选择性（优于 92%）提取 Pd（II）。通过研究 pH 值、洗脱液类型和体积、吸附和解吸时间以及吸附剂用量等各种因素的影响，优化吸附过程。结果表明，基于 Langmuir 等温线模型（决定系数为 0.9887），在 pH 值为 3.0 时，PPOP-UOZ-1 对 Pd（II） 的最大吸附量为 208.3 mg/g。与其他共存的金属离子相比，该吸附剂对 Pd（II） 表现出优异的选择性，回收率高于 92%。此外，PPOP-UOZ-1 可以重复使用至少 6 次吸附-解吸循环，而不会显著降低效率。这种提出的吸附剂和方法进一步适用于从环境水样中高效提取 Pd（II）。