第一作者：Zheng Jianwei

通讯作者：Gang Zhang,Hong-bin Sun

合写作者：Yang L,Liying Zhang

发表刊物：Nanotechnology

期号：26

卷号：32

影响因子：2.9

DOI码：10.1088/1361-6528/abef2f

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：ENGLAND

摘要：Core–shell nanocomposites with a catalytic metal-organic framework (MOF) shell are more effective and stable than bare MOF. We have successfully designed an effective heterogeneous catalyst for the synthesis of benzimidazole by integrating acidic catalytic activity, and promoted the aerobic oxidation and magnetic recyclability of core–shell nanocomposite Fe3O4@SiO2@UiO-66. The Fe3O4@SiO2 core is encapsulated by the in situ-grown UiO-66 shell, and the UiO-66 shell retains the porous structure and crystallinity of UiO-66 with abundant exposed Lewis acid sites. It shows high catalytic ability for the synthesis of various benzimidazoles through the acid-catalyzed condensation and aerobic oxidation with in situ oxygen. The Fe3O4@SiO2 core provides magnetic recyclability of Fe3O4@SiO2@UiO-66, and maintains high catalytic ability and stability over six cycles.

关键字：nanocomposites, heterogeneous catalysis, metal-organic frameworks, core–shell structure, benzimidazoles

论文编号：WOS:000639519900001

学科门类：理学

一级学科：化学

ISSN号：0957-4484

是否译文：否