Hematite nanoparticle-templated hollow carbon nanonets supported palladium nanoparticles: Preparation and application as efficient recyclable catalysts

Article abstract of DOI:10.1039/c2cy20562a

Hollow carbon nanonets (HCN), which are attractive materials for catalyst support, were fabricated using the pre-synthesized hematite nanoparticles as the hard template. And then the HCN supported Pd nanoparticles (Pd/HCN) were prepared by precipitation-reduction method. The catalytic performance of Pd/HCN was investigated using Suzuki and Heck coupling reactions as model reactions. The results demonstrated that the as-prepared Pd/HCN nanocomposites exhibit high catalytic activity for the two types of coupling reactions under ligand free conditions. Especially, the Suzuki reactions between various aryl halides and phenylboronic acid gave excellent yields in water. Moreover, the as-prepared Pd/HCN catalysts can be easily recovered from the reaction medium by centrifugation for recycling, and the catalytic efficiency shows no obvious loss even after 6 repeated cycles.

Full text of DOI:10.1039/c2cy20562a

Electronic Supplementary Material (ESI) for Catalysis Science & Technology
This journal is © The Royal Society of Chemistry 2013
Electronic Supplementary Information
Hematite Nanoparticle-Templated Hollow Carbon Nanonets
Supported Palladium Nanoparticles: Preparation and Application
as Efficient Recyclable Catalysts
a, b
a
a
a
Maiyong Zhu, Ying Wang, Chengjiao Wang, Guowang Diao*
a
College of Chemistry and Chemical Engineering, Yangzhou University,
Yangzhou, 225002, P. R. China
b
School of Materials Science and Engineering, Jiangsu University, Zhenjiang,
12013, P. R. China
2
A
B
1
0
20
30
40
2
50
 ( )
60
70
80
O
Figure S 1. XRD pattern of commercial Pd/C (A) and Pd/SCS (B).

Electronic Supplementary Material (ESI) for Catalysis Science & Technology
This journal is © The Royal Society of Chemistry 2013
A
B
335.85
O1s
0
Pd 3d
0
C1s
5/2
Pd 3d3
3
/2
41.15
Pd3d
200
300
400
500
600
330
335
340
345
350
Binding Energy (eV)
Binding energy (EV)
3
36
C
D
0
0
Pd 3d5
/2
Pd 3d3
/2
341.4
Pd3d
2
00
300
400
500
600
3
30
335
340
Binding Energy (eV)
345
350
Binding Energy (eV)
Figure S 2. Survey spectrum and high-resolution XPS Pd 3d spectrum in commercial Pd/C (A
and B) and Pd/SCS (C and D).

Electronic Supplementary Material (ESI) for Catalysis Science & Technology
This journal is © The Royal Society of Chemistry 2013
Figure S 3. TEM images of SCS (A), Pd/SCS (B), and commercial Pd/C (C and D) with different
magnification.