Rostami Saeed, Yahyazadeh Asieh, Adibi Hadi
Department of Chemistry, Faculty of Science, University of Guilan, P.O. Box 41335-1914, Rasht, Iran.
Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Sci Rep. 2024 Dec 30;14(1):31586. doi: 10.1038/s41598-024-76786-z.
In this study, we present the synthesis of a silver nanocomposite by utilizing a β-cyclodextrin (βCD) polymer anchored onto the surface of magnetic g-CN (referred to as g-CN-FeO/βCD-Ag). The structure and composition of the g-CN-FeO/βCD-Ag nanocomposite were thoroughly characterized using various techniques, including FT-IR, FE-SEM-EDS, TEM, TGA, XRD, ICP, and VSM. This catalytic system exhibited excellent selectivity in reducing nitro groups, even in the presence of other reactive functional groups, resulting in high yields ranging from 85 to 98%. Moreover, the organometallic nanocatalyst could be easily recovered from the solution using an external magnet and demonstrated consistent catalytic activity over six consecutive runs with a slight decrease.
在本研究中，我们通过利用锚定在磁性g-CN表面的β-环糊精（βCD）聚合物（称为g-CN-FeO/βCD-Ag）合成了一种银纳米复合材料。使用各种技术，包括傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜-能谱仪（FE-SEM-EDS）、透射电子显微镜（TEM）、热重分析（TGA）、X射线衍射（XRD）、电感耦合等离子体质谱（ICP）和振动样品磁强计（VSM），对g-CN-FeO/βCD-Ag纳米复合材料的结构和组成进行了全面表征。该催化体系在还原硝基时表现出优异的选择性，即使存在其他反应性官能团，产率也高达85%至98%。此外，使用外部磁铁可以很容易地从溶液中回收有机金属纳米催化剂，并且在连续六次运行中表现出一致的催化活性，略有下降。
