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

被引：33

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

页码：67 / 72

页数：6

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