第一作者：Yongjian Ai

通讯作者：Hong-bin Sun,Qionglin Liang

合写作者：Mengqi He, Feng Zhang,Yang Long,Yunzheng Li, Qiang Han, Mingyu Ding

发表刊物：Journal of Materials Chemistry A

期号：34

卷号：6

影响因子：10.7

DOI码：10.1016/j.cej.2016.11.128

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：ENGLAND

摘要：The development of a general approach for fabricating stable ultra-small heterogeneous nanocatalysts has been intensively pursued. However, issues related to complex synthesis processes and structural stability have restricted their investigation and application. Here we report a facile organometallic conjunction strategy for the large-scale fabrication of porous carbon framework encapsulated highly dispersed sub-3 nm ultra-small nanoparticles (USMNPs@PCF). This methodology is based on the convenient aldol condensation reaction to manufacture a metallo-supramolecular polymer precursor and then consequent annealing to form the target nanocomposite. This technique was successfully applied to the preparation of varieties of USMNPs@PCF, including Fe, Co, Ni, Mo, Ru, Rh, Pd and Pt. As a representative application, the PCF encapsulated sub-3 nm Pd nanoparticles demonstrated remarkable durability and efficiency for chemoselective hydrogenation of nitroarenes to their corresponding anilines under ambient conditions with low catalyst loading. All hydrogenation reactions can complete in 4 min with >99% conversion and >99% chemoselectivity. The turnover frequency (TOF) was up to 11400 h(-1) for p-nitrophenol. This work provides a general, scalable and economical route for the manufacture of sub-3 nm and highly dispersed nanocomposites, which can be used in many other important fields, such as electrochemistry, energy science and environmental protection.

关键字：Bismuth iron oxide;Graphene;Catalytic reduction;Continuous flow;Nitroarenes;Anilines

论文编号：WOS:000444698200043

学科门类：理学

一级学科：化学

页面范围：16680-16689

ISSN号：2050-7488

是否译文：否