Alkayal Nazeeha S
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Polymers (Basel). 2022 May 21;14(10):2101. doi: 10.3390/polym14102101.
In recent times, developments in polymer application properties have required the design of different polymer structures more than ever. Cross-linked polymers (CPs) could be considered a good candidate material for potential applications when used in conjunction with nanoparticles. Cross-linked polymethyl methacrylate nanocomposites are considered to be one of the most commonly polymeric adsorbents due to their varied and simple modification methods. A new class of C-PMMA/SnO nanocomposites have been fabricated as surface-selective adsorbents of Cr (III) with a good yield and different loading of SnO nanoparticles. The morphology, molecular structures, and thermal stability of the new cross-linked polymers were examined using a Scanning electron microscope (SEM), the Fourier Transform Infrared method (FTIR), X-ray diffraction (XRD), and Thermogravimetric Analysis (TGA). The adsorption study of C-PMMA/SnO was investigated, and an efficient level of adsorption for Cr (III) cations was detected. To evaluate the potential for the new polymers to be used as adsorbents against Cr (III) ions, the contact time, the initial concentration of Cr (III), and the effects of pH were studied. The introduction of SnO into the polymer network enhanced the efficiency of the adsorption of heavy metals. The C-PMMA/SnO is highly efficient at removing Cr (III) ions in wastewater samples at pH 6 for one hour. The adsorption study demonstrated that the adsorption capacity of C-PMMA/SnOc for Cr (III) was 1.76 mg /g, and its adsorption isotherm agreed with the Langmuir adsorption model.
近年来，聚合物应用性能的发展比以往任何时候都更需要设计不同的聚合物结构。交联聚合物（CPs）与纳米颗粒结合使用时，可被视为潜在应用的良好候选材料。交联聚甲基丙烯酸甲酯纳米复合材料由于其多样且简单的改性方法，被认为是最常用的聚合物吸附剂之一。一类新型的C-PMMA/SnO纳米复合材料已被制备出来，作为Cr（III）的表面选择性吸附剂，具有良好的产率和不同负载量的SnO纳米颗粒。使用扫描电子显微镜（SEM）、傅里叶变换红外光谱法（FTIR）、X射线衍射（XRD）和热重分析（TGA）对新型交联聚合物的形态、分子结构和热稳定性进行了研究。对C-PMMA/SnO的吸附研究进行了调查，并检测到对Cr（III）阳离子的有效吸附水平。为了评估新型聚合物作为Cr（III）离子吸附剂的潜力，研究了接触时间、Cr（III）的初始浓度和pH值的影响。将SnO引入聚合物网络提高了重金属的吸附效率。C-PMMA/SnO在pH值为6的废水样品中吸附Cr（III）离子1小时的效率很高。吸附研究表明，C-PMMA/SnOc对Cr（III）的吸附容量为1.76 mg/g，其吸附等温线符合朗缪尔吸附模型。
