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Effect of CNTs Support Diameter on Pt Particles Size and Distribution

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Abstract:

The Platinum catalysts on the carbon nanotubes(CNTs) supports of various diameters were prepared by wet impregnation method using H2PtCl6 precursor. The samples using 100nm, 15~20nm, 10~15nm and 5~10nm diameters of CNTs and carbon nanofibers(CNFs) are named Pt/t- CNFs, Pt/MWNTs20, Pt/MWNTs10 and Pt/MWNTs5, respectively. The effects of CNTs diameter on the Pt particle size and distribution were investigated by the means of powder XRD and TEM observation. In addition, the electro-catalytic characteristics for methanol electro-oxidation were estimated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. The average size of Pt particles increases as follows; Pt/MWNTs10 < Pt/MWNTs5 < Pt/MWNTs20 < Pt/t-CNFs. The electro-catalytic characteristics of Pt/MWNTs10 and Pt/MWNTs20 are found to be superior in comparison with the others. For preparation of the most effective supported Pt catalyst, the optimum diameter of CNTs support in the range of 10-20nm, is needed.

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Periodical:

Solid State Phenomena (Volume 119)

Pages:

231-234

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.119.231

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Online since:

January 2007

Authors:

Yong Hwan Kim, Yon Ki Seo, Young Rae Cho, Kwang Ho Kim, Won Sub Chung

Keywords:

Carbon Nanofiber, Carbon Nanotube (CN), Catalyst Support, Electro-Catalysis

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] W. Li, C. Liang, J. Qiu, W. Zhou, H. Han, Z. Wei, G. Sun and Q. Xin: Carbon Vol. 40 (2002), p.787.

Google Scholar

[2] W. Li, C. Liang, W. Zhou, J. Qiu, H. Li, G. Sun and Q. Xin: Carbon Vol. 42 (2004), p.423.

Google Scholar

[3] Z. Liu, X. Lin, J. Y. Lee, W. Zhang, M. Han and L. M. Gan: Langmuir Vol. 18 (2002), p.4054.

Google Scholar

[4] T. Matsumoto, T. Komatsu, K. Arai, T. Yamazaki, M. Kijima, H. Shimizu, Y. Takasawa and J. Nakamura: Chem. Commun., (2004), p.840.

DOI: 10.1039/b400607k

Google Scholar

[5] C. Wang, M. Waje, X. Wang, Jason M. Tang, Robert C. Haddon and Y. Yan: Nano Letters Vol. 4 (2004), p.345.

Google Scholar