摘要
以Fe3O4为核心,以IRMOF-3为壳层,采用层层包裹的方法制备了核-壳结构的磁性Fe3O4@IRMOF-3材料。用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、透射电镜(TEM)、及扫描电镜(SEM)等手段对材料进行表征,并考察了材料在Knoevenagel缩合反应中的催化反应性能。实验结果表明,Fe3O4@IRMOF-3材料呈现出Fe3O4和IRMOF-3的双重功能,既可以磁性分离,又具有IRMOF-3的晶体结构、孔结构和催化性能,在Knoevenagel缩合反应中表现出较好的催化活性、选择性和稳定性。
In this work,a novel kind of Fe3O4@ IRMOF-3 magnetic metal-organic framwork( MOF) has been successfully fabricated using a step-by-step assembly strategy. The structure and morphology of the as-prepared Fe3O4@ IRMOF-3 were systematically characterized and it was further investigated in the Knoevenagel condensation of benzaldehyde and ethylcynoacetate. The results indicated that the hybrid magnetic MOFs exhibit core-shell structure with Fe3O4 as the core and IRMOF-3 as the shell. Furthermore,the amine-functionalized material was active and selective as base catalysts in the Knoevenagel condensations. Remarkably,it can be recycled by magnetic seperation without significant loss of its catalytic performence.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第6期6039-6043,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21203017)
国家重点实验室开放基金资助项目(N-11-03)
中央高校基本研究业务费专项资金资助项目(DC13010311)
