Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso 31, 16146 Genova, Italy.
ACS Appl Mater Interfaces. 2012 Feb;4(2):604-7. doi: 10.1021/am201766r. Epub 2012 Feb 2.
We report on a novel catalytic system based on electrospun polymer nanofibers, which were modified with a metal-containing polyhedral oligomeric silsesquioxanes (M-POSS). In particular, a titanium-based POSS, characterized by an amino group as reactive side, was contacted with poly(styrene-co-maleic anhydride) (PSMA) nanofibers, which were dispersed in a solvent capable of solubilizing the above metal silsesquioxane. FTIR measurements evidenced the occurrence of the reaction between the MA group of PSMA and the amino group of POSS molecule. The catalytic activity of the PSMA/Ti-POSS-NH(2) system was proved in the degradation of sulforhodamine B under UV light. The presence of metal center, directly attached to the nanofiber surface, renders the system catalytically active.
我们报告了一种基于电纺聚合物纳米纤维的新型催化体系，该体系用含金属的多面体低聚倍半硅氧烷（M-POSS）进行了修饰。具体而言，一种钛基 POSS，其特征在于具有作为反应性侧基的氨基，与聚（苯乙烯-co-马来酸酐）（PSMA）纳米纤维接触，该纳米纤维分散在能够溶解上述金属倍半硅氧烷的溶剂中。FTIR 测量表明，PSMA 中的 MA 基团和 POSS 分子中的氨基之间发生了反应。PSMA/Ti-POSS-NH(2) 体系在紫外光下对磺基罗丹明 B 的降解中表现出催化活性。金属中心直接连接到纳米纤维表面的存在使该体系具有催化活性。
