Rajeh Sahar Y, Alrashidi Aljazi Abdullah, Soury Raoudha, Jabli Mahjoub
Chemistry Department, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia.
Department of Chemistry, College of Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
Polymers (Basel). 2025 May 28;17(11):1494. doi: 10.3390/polym17111494.
In the present work, meso-tetrakis(2,4,6-trimethylphenyl) porphyrinato)zinc(II): ([Zn(TMP)] , meso-tetrakis-(tetraphenyl)porphyrin iron(III))chloride): [Fe(TPP)Cl] , and meso-tetrakis(phenyl)porphyrin manganese(III) chloride): [Mn(TPP)Cl] (3) were synthesized. Then, the three prepared porphyrinic complexes - were functionalized with branched polyethyleneimine (PEI). The prepared complexes were thoroughly analyzed using several analytical techniques, including H NMR, FT-IR, UV-vis, XRD, XRF, TGA-DTA, SEM, and EDX. The presence of sharp main peaks at 2θ between 10° and 80°, in XRD analysis, for all studied compounds suggested the crystalline nature of the porphyrinic complexes. The morphological properties of the porphyrininc complexes were significantly affected by the chemical modification with polyethyleneimine. EDX result confirmed the complexation of zinc, iron, and manganese metals with the porphyrinic core. The increase in carbon and nitrogen contents after the addition of polyethyleneimine to the complexes - was noticeable. After thermal decomposition, the total mass loss was equal to 92.97%, 66.77%, and 26.78% for complexes , , and , respectively. However, for the complex -PEI, complex -PEI, and complex -PEI, the total mass losses were 83.12%, 81.88%, and 35.78%, respectively. The synthetic compounds were additionally utilized for the adsorption of Naphthol blue black B from water. At optimum adsorption conditions (T = 20 °C, time = 60 min, pH = 5), the highest adsorption capacities were 154 mg/g, 139 mg/g, and 119 mg/g for complex -PEI, complex -PEI, and complex -PEI, respectively. The adsorption mechanism followed the pseudo second order, the Freundlich, and the Temkin models. The results indicated that the adsorption process is reliant on chemical interactions. It was also governed by intraparticular diffusion and other kinetic phenomena.
在本工作中，合成了中位-四（2,4,6-三甲基苯基）卟啉锌（II）：[Zn(TMP)]、（中位-四（四苯基）卟啉铁（III））氯化物：[Fe(TPP)Cl]和中位-四（苯基）卟啉锰（III）氯化物：[Mn(TPP)Cl]（3）。然后，用支化聚乙烯亚胺（PEI）对制备的三种卟啉配合物进行功能化。使用多种分析技术对制备的配合物进行了全面分析，包括¹H NMR、傅里叶变换红外光谱（FT-IR）、紫外可见光谱（UV-vis）、X射线衍射（XRD）、X射线荧光光谱（XRF）、热重-差示热分析（TGA-DTA）、扫描电子显微镜（SEM）和能谱分析（EDX）。在XRD分析中，所有研究化合物在2θ为10°至80°之间出现尖锐的主峰，表明卟啉配合物具有晶体性质。聚乙烯亚胺的化学修饰对卟啉配合物的形态性质有显著影响。EDX结果证实了锌、铁和锰金属与卟啉核心的络合。向配合物中添加聚乙烯亚胺后，碳和氮含量的增加很明显。热分解后，配合物1、2和3的总质量损失分别为92.97%、66.77%和26.78%。然而，对于配合物1-PEI、配合物2-PEI和配合物3-PEI，总质量损失分别为83.12%、81.88%和35.78%。合成的化合物还用于从水中吸附萘酚蓝黑B。在最佳吸附条件（温度T = 20°C，时间= 60分钟，pH = 5）下，配合物1-PEI、配合物2-PEI和配合物3-PEI的最高吸附容量分别为154 mg/g、139 mg/g和119 mg/g。吸附机制符合准二级动力学、弗伦德利希模型和坦金模型。结果表明，吸附过程依赖于化学相互作用。它还受颗粒内扩散和其他动力学现象的控制。
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