First Author:Yongjian Ai

Correspondence Author:Hong-bin Sun,Qionglin Liang

Co author:Mengqi He, Feng Zhang,Yang Long,Yunzheng Li, Qiang Han, Mingyu Ding

Journal:Journal of Materials Chemistry A

Issue:34

Volume:6

Impact Factor:10.7

DOI number:10.1016/j.cej.2016.11.128

Affiliation of Author(s):Department of Chemistry, Northeastern University

Teaching and Research Group:物理化学

Place of Publication:ENGLAND

Abstract: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.

Key Words:Bismuth iron oxide;Graphene;Catalytic reduction;Continuous flow;Nitroarenes;Anilines

Document Code:WOS:000444698200043

Discipline:Natural Science

First-Level Discipline:Chemistry

Page Number:16680-16689

ISSN No.:2050-7488

Translation or Not:no