Microwave Assisted Synthesis of Sn Promoted Pt Catalysts and Their Ethanol Electro-oxidation Activities

Dilan Atbas¹, Aykut Çağlar¹, Hilal Kivrak^1, and Arif Kivrak²

¹Chemical Engineering Department, Yüzüncü Yıl University, Van, Turkey

²Department of Chemistry, Yüzüncü Yıl University, Van, Turkey

Cite this paper:
Dilan Atbas, Aykut Çağlar, Hilal Kivrak and Arif Kivrak. Microwave Assisted Synthesis of Sn Promoted Pt Catalysts and Their Ethanol Electro-oxidation Activities. American Journal of Nanomaterials. 2016; 4(1):8-11. doi: 10.12691/ajn-4-1-2

Abstract

In the present work, bi-metallic Pt-Sn electro catalysts were prepared by microwave assisted polyol method at 9:1, 7:3, and 5:5 Pt: Sn atomic ratios on carbon nanotube. The ethanol electro-oxidation activities of these catalysts were measured by cyclic voltammetry (CV). The effect of Sn addition to Pt for the improvement of ethanol electro-oxidation was also measured by CV measurements. Pt-Sn (07:03) catalyst exhibits the highest ethanol electro-oxidation activity. Furthermore, the rotating disk measurements were performed at 0-2000 rpm rotating rates on Pt-Sn (07:03) catalyst. The effect of ethanol concentration on ethanol electro-oxidation activity at varying ethanol concentrations (0.03 M-8.00 M) were measured on Pt-Sn (07:03) catalyst. CO stripping measurements were performed to determine the CO resistance of Pt-Sn electrocatalysts. As a result, CO oxidation onset potential decreases by the addition of Sn to Pt, revealing that Sn addition promotes the CO resistance of platinum.

Keywords:
ethanol electro-oxidation microwave assisted polyol method DEFCs Pt:Sn catalysts cyclic voltammetry

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

Figures

References:

[1]	G.C. Li, P.G. Pickup, Analysis of performance losses of direct ethanol fuel cells with the aid of a reference electrode, Journal of Power Sources, 161 (2006) 256-263.
[2]	W.J. Zhou, W.Z. Li, S.Q. Song, Z.H. Zhou, L.H. Jiang, G.Q. Sun, Q. Xin, K. Poulianitis, S. Kontou, P. Tsiakaras, Bi- and tri-metallic Pt-based anode catalysts for direct ethanol fuel cells, in: 8th Grove Fuel Cell Symposium, London, ENGLAND, 2003, pp. 217-223.
[3]	T. Lopes, E. Antolini, E.R. Gonzalez, Carbon supported Pt-Pd alloy as an ethanol tolerant oxygen reduction electrocatalyst for direct ethanol fuel cells, International Journal of Hydrogen Energy, 33 (2008) 5563-5570.
[4]	L. Cao, G.Q. Sun, H.Q. Li, Q. Xin, Carbon-supported IrSn catalysts for a direct ethanol fuel cell, Electrochemistry Communications, 9 (2007) 2541-2546.
[5]	E. Antolini, Catalysts for direct ethanol fuel cells, Journal of Power Sources, 170 (2007) 1-12.
[6]	H.F. Wang, Z.P. Liu, Comprehensive mechanism and structure-sensitivity of ethanol oxidation on platinum: New transition-state searching method for resolving the complex reaction network, Journal of the American Chemical Society, 130 (2008) 10996-11004.
[7]	A.O. Neto, A.Y. Watanabe, R.M.D. Rodrigues, M. Linardi, C. Forbicini, E.V. Spinace, Electrooxidation of ethanol using Pt rare earth-C electrocatalysts prepared by an alcohol reduction process, Ionics, 14 (2008) 577-581.
[8]	D.M. dos Anjos, F. Hahn, J.M. Leger, K.B. Kokoh, G. Tremiliosi, Ethanol electrooxidation on Pt-Sn and Pt-Sn-W bulk alloys, in: 16th Brazillian Symposium of Electrochemistry and Electroanalytical Chemistry, Aguas de Lindoia, BRAZIL, 2007, pp. 795-802.
[9]	E. Ribadeneira, B.A. Hoyos, Evaluation of Pt-Ru-Ni and Pt-Sn-Ni catalysts as anodes in direct ethanol fuel cells, Journal of Power Sources, 180 (2008) 238-242.
[10]	L.H. Jiang, H.X. Zang, G.Q. Sun, Q. Xin, Influence of preparation method on performance of PtSn/C anode electrocatalyst for direct ethanol fuel cells, Chinese Journal of Catalysis, 27 (2006) 15-19.
[11]	F.L.S. Purgato, P. Olivi, J.M. Leger, A.R. de Andrade, G. Tremiliosi, E.R. Gonzalez, C. Lamy, K.B. Kokoh, Activity of platinum-tin catalysts prepared by the Pechini-Adams method for the electrooxidation of ethanol, Journal of Electroanalytical Chemistry, 628 (2009) 81-89.
[12]	J. Riberio, D.M. dos Anjos, K.B. Kokoh, C. Coutanceau, J.M. Leger, P. Olivi, A.R. de Andrade, G. Tremiliosi-Filho, Carbon-supported ternary PtSnIr catalysts for direct ethanol fuel cell, Electrochimica Acta, 52 (2007) 6997-7006.
[13]	J. Ribeiro, D.M. dos Anjos, J.M. Leger, F. Hahn, P. Olivi, A.R. Andrade, G. Tremiliosi-Filho, K.B. Kokoh, Effect of W on PtSn/C catalysts for ethanol electrooxidation, Journal of Applied Electrochemistry, 38 (2008) 653-662.
[14]	D.R. Lycke, E.L. Gyenge, Electrochemically assisted organosol method for Pt-Sn nanoparticle synthesis and in situ deposition on graphite felt support: Extended reaction zone anodes for direct ethanol fuel cells, Electrochimica Acta, 52 (2007) 4287-4298.
[15]	X.Z. Xue, J.J. Ge, T. Tian, C.P. Liu, W. Xing, T.H. Lu, Enhancement of the electrooxidation of ethanol on Pt-Sn-P/C catalysts prepared by chemical deposition process, Journal of Power Sources, 172 (2007) 560-569.
[16]	D. Zhao, M.-Q. Shi, W.-M. Liu, Y.-Q. Chu, C.-A. Ma, Special microwave-assisted one-pot synthesis of low loading Pt- Ru alloy nanoparticles on reduced graphene oxide for methanol oxidation, Micro & Nano Letters, 9 (2014) 50-54.
[17]	H. Demir Kivrak, The effect of temperature and concentration for methanol electrooxidation on Pt-Ru catalyst synthesized by microwave assisted route, Turkish Journal of Chemistry, 39 (2015) 563-575.
[18]	S.C.S. Lai, M.T.M. Koper, Electro-oxidation of ethanol and acetaldehyde on platinum single-crystal electrodes, in: Conference on Electrocatalysis Theory and Experiment at the Interface, Southampton, ENGLAND, 2008, pp. 399-416.
[19]	A.B. Kumar, Daniel A., Influence of Halide Ions on Anodic Oxidation of Ethanol on Palladium, in, 2016, pp. 201-206.