Issue 16, 2011
From the journal:

Journal of Materials Chemistry

Preparation, characterization and catalytic properties of Pd-decorated carbon nanotubes possessing different linkers

Ja Young Kim,a   Kyungho Park,a   Seung Yong Bae,b   Gwui Cheol Kim,c   Sunwoo Lee*a  and  Hyun Chul Choi*a  

* Corresponding authors

a Department of Chemistry and Institute of Basic Science, Chonnam National University, Gwangju, Republic of Korea
E-mail: sunwoo@chonnam.ac.kr, chc12@chonnam.ac.kr
Fax: +82-62-530-3389
Tel: +82-62-530-3385/3491

b Chemical R&D Center, Samsung Cheil Industries, Uiwang-Si, Korea

c Jeonnam Nano Bio Research Center, Jeollanam-do, Korea

Abstract

To investigate the relationship between the linker length and the catalytic activities of metal-decorated CNTs, three samples were prepared with different linker molecules, viz.NaSH, HSCH2CH2SH, and C2H2N2S3. The structures of the prepared samples were characterized using transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The analysis of the TEM images and XRD patterns showed that the Pd nanoparticles strongly adhered to the outside of the CNTs, with average particle sizes of ∼3 nm, ∼5 nm, and ∼6 nm for samples A, B and C, respectively. The XPS spectra revealed that the Pd species on the Pd-decorated CNTs consisted of Pd0, Pd2+ and Pd4+. The oxidized Pd species were formed by the interaction of the electron-donor Pd0 atoms with the electrophilic neighboring protons (H+) during the sample preparation. The oxidized Pd species become more abundant with increasing linker length, causing a decrease of their catalytic activities in organic and electrocatalytic reactions. Nevertheless, all of the samples exhibited higher activity in organic and electrocatalytic reactions than that of the reference systems.

Graphical abstract: Preparation, characterization and catalytic properties of Pd-decorated carbon nanotubes possessing different linkers

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Article information

DOI
https://doi.org/10.1039/C0JM03467C
Article type
Paper
Submitted
14 Oct 2010
Accepted
09 Feb 2011
First published
10 Mar 2011

J. Mater. Chem., 2011,21, 5999-6005

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Preparation, characterization and catalytic properties of Pd-decorated carbon nanotubes possessing different linkers

J. Y. Kim, K. Park, S. Y. Bae, G. C. Kim, S. Lee and H. C. Choi, J. Mater. Chem., 2011, 21, 5999 DOI: 10.1039/C0JM03467C

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