Magnetic Fe3O4 supported PdAu bimetallic nanoparticles with the enhanced catalytic activity for Heck and Suzuki cross-coupling reactions

被引：31
|
作者：
Chen, Xiao [1 ]
Qian, Dejian [1 ]
Xu, Guodong [1 ]
Xu, Hui [2 ]
Dai, Jingtao [1 ]
Du, Yukou [2 ]
机构：
[1] Yancheng Teachers Univ, Sch Chem & Environm Engn, Yancheng 224007, Peoples R China
[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2019年 / 573卷
基金：
中国国家自然科学基金;
关键词：
C-C cross-coupling; Heterogeneous catalysis; Magnetic catalyst; PdAu bimetal nanoparticles; HIGHLY EFFICIENT; PALLADIUM; PARTICLES; NANOWIRES; GRAPHENE; MIYAURA; ALLOY; ACID;
D O I：
10.1016/j.colsurfa.2019.04.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The PdAu bimetallic nanocrystals supported on Fe3O4 magnetic nanoparticles (PdAu/Fe3O4) were synthesized by a facile incipient wetness impregnation method. The as-synthesized bimetallic catalyst PdAu/Fe3O4 exhibits significantly enhanced catalytic properties for Heck cross-coupling reaction under aerobic condition compared to the monometallic counterparts. The enhanced catalytic activity is attributed to the low-alloyed structure with a Pd-rich shell and an Au-rich core as well as the synergistic effect between Pd and Au according to X-ray photoelectron spectroscopy (XPS) results. Also, the cycle performance of the magnetic catalyst was evaluated. Reasonable yield was achieved after 6 cycles. In addition, the catalytic behavior of PdAu/Fe3O4 for Suzuki reaction was investigated, providing excellent yield and moderate cycle performance. These results suggest the magnetic bimetallic catalyst PdAu/Fe3O4 is a promising catalyst for Heck and Suzuki cross-coupling reactions.
引用
收藏
页码：67 / 72
页数：6
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