Hussain Saddam, Kunthom Rungthip, Liu Hongzhi
International Center for Interdisciplinary Research and Innovation of Silsesquioxane Science, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.
Chem Asian J. 2024 Oct 16;19(20):e202400584. doi: 10.1002/asia.202400584. Epub 2024 Sep 4.
A novel hybrid network was synthesized in two steps: the first step involved the attachment of glycidyl methacrylate (GMA) to octa(aminophenyl) silsesquioxane (OAPS) through a ring-opening reaction, forming a hybrid dendrimer structure, and the second step involved the cross-linking of hybrid dendrimer using an azobisisobutyronitrile initiator to create the final hybrid network of OAPS-GMA. The synthesized hybrid material was comprehensively characterized using fourier transform infrared Spectroscopy (FTIR), nuclear magnetic resonance ((H, C, and Si NMR) spectroscopy, thermogravimetric Analysis (TGA), and scanning electron microscopy (SEM). The BET surface area was found to be 25.44 m/g, and significant 2.341 cm/g of total pore volume was observed. The TGA analysis shows that the material is highly stable up to 450 °C. The synthesized network demonstrated remarkable adsorption capacities for iodine and dyes. It exhibited an iodine adsorption capacity of 3.4 g/g from vapors and 874 mg/g from solution. Additionally, it showed significant adsorption capacities for Rhodamine B and Congo red, with values of 762 mg/g and 517 mg/g, respectively. This study not only provides a novel method for preparing GMA-functionalized silsesquioxane-based porous hybrid polymers but also contributes to advancing solutions for environmental pollution issues.
第一步是通过开环反应将甲基丙烯酸缩水甘油酯（GMA）连接到八（氨基苯基）倍半硅氧烷（OAPS）上，形成杂化树枝状聚合物结构；第二步是使用偶氮二异丁腈引发剂对杂化树枝状聚合物进行交联，以创建最终的OAPS-GMA杂化网络。使用傅里叶变换红外光谱（FTIR）、核磁共振（（H、C和Si NMR）光谱、热重分析（TGA）和扫描电子显微镜（SEM）对合成的杂化材料进行了全面表征。发现BET表面积为25.44 m/g，观察到总孔体积为2.341 cm/g。TGA分析表明，该材料在450 °C以下具有高度稳定性。合成的网络对碘和染料表现出显著的吸附能力。它对碘蒸气的吸附容量为3.4 g/g，对碘溶液的吸附容量为874 mg/g。此外，它对罗丹明B和刚果红也表现出显著的吸附能力，其值分别为762 mg/g和517 mg/g。本研究不仅提供了一种制备GMA功能化倍半硅氧烷基多孔杂化聚合物的新方法，也为推进环境污染问题的解决方案做出了贡献。
