Preparation of PtRu/C Electrocatalysts by Hydrothermal Carbonization Process for Methanol Electro-oxidation

 

M. M. Tusi, M. Brandalise, O. V. Correa, A. O. Neto, M. Linardi, E. V. Spinacé*

 

Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN-SP,Av. Prof. Lineu Prestes, 2422, Cidade Universitária, 05508-900 São Paulo, SP, Brazil.

 

Received 25 April 2008; accepted 22 October 2009

 

Abstract

PtRu/C electrocatalysts were prepared by hydrothermal carbonization process using starch as carbon sources and reducing agents and platinum and ruthenium salts as catalysts of carbonization process and metals source. pH of the reaction medium was adjusted using KOH or TPAOH (tetrapropylammonium hydroxide). The obtained PtRu/C electrocatalysts were characterized by SEM/EDX, TGA, XRD and cyclic voltammetry. The electro-oxidation of methanol was studied by cyclic voltammetry and chronoamperometry. The PtRu/C electrocatalyst prepared using TPAOH was more active for methanol electro-oxidation than the material prepared with KOH.

Keywords: starch, hydrothermal carbonization, PtRu/C electrocatalyst, methanol, fuel cell.

 

Full text only in PDF format

Texto disponível em PDF

 

References

1. A.O. Neto, R.R. Dias, M.M. Tusi, M. Linardi, E.V. Spinacé, J. Power Sources 166 (2007) 87-91.

2. H. Wendt, M. Linardi, E.M. Aricó, Química Nova 25 (2002) 470-476.        [ Links ]

3. H. Wendt, M. Götz, M. Linardi, Química Nova 23 (2000) 538-546.        [ Links ]

4. H. Wendt, E.V. Spinacé, A.O. Neto, M. Linardi, Química Nova 28 (2005) 1066-1075.        [ Links ]

5. W.J. Zhou, B. Zhou, W.Z. Li, S.Q. Song, G.Q. Sun, Q. Xin, S. Douvartzides, M. Goula, P. Tsiakaras, J. Power Sources 126 (2004) 16-22.

6. H. Liu, C. Song, L. Zhang, J. Zhang, H. Wang, D.P. Wilkinson, J. Power Sources 155 (2006) 95-110.

7. E.V. Spinacé, A.O. Neto, T.R.R. Vasconcelos, M. Linardi, J. Power Sources 137 (2004) 17-23.

8. P. Serp, M. Corrias, P. Kalck, Appl. Catalysis A: General 253 (2003) 337-358.

9. K.-W. Park, Y.-E. Sung, S. Han, Y. Yun, T. Hyeon, J. Phys. Chem. B 108 (2004) 939-944.

10. Y.C. Liu, X.P. Qiu, Y.Q. Huang, W.T. Zhu, Carbon 40 (2002) 2375-2380.

11. S.-H. Yu, X. Cui, L. Li, K. Li, B. Yu, M. Antonietti, H. Cölfen, Advanced Materials 16 (2004) 1636-1640.

12. H.-S. Qian, S.-H. Yu, L.-B. Luo, J.-Y. Gong, L.-F. Fei, X.-M. Liu, Chemistry of Materials 18 (2006) 2102-2108.

13. M.M. Tusi, M. Brandalise, O.V. Correa, A.O. Neto, M. Linardi, E.V. Spinacé, Materials Research 10 (2007) 171-175.

14. O.A. Baturina, S.R. Aubuchon, K.J. Wynne, Chemistry of Materials 18 (2006) 1498-1504.

15. A.O. Neto, M.J. Giz, J. Perez, E.A. Ticianelli, E.R. Gonzalez, J. Electrochem. Soc. 149 (2002) 272-279.

16. F. Colmati Jr., W.H.L. Valbuena, G.A. Camara, E.A. Ticianelli, E.R. Gonzalez, J. Brazilian Chem. Soc. 13 (2002) 474-482.

17. V. Radmilović, H.A. Gasteiger, P.N. Ross, J. Catalysis 154 (1995) 98-106.

18. E. Antolini, F. Caderllini, J. Alloys and Compounds 315 (2001) 118-122.

19. J.H. Dong, Y.S. Lin, M.Z.C. Hu, R.A. Peascoe, E.A. Payzant, Microporous and Mesoporous Materials 34 (2000) 241-253.

20. M. Liu, L. Gan, C. Tian, J. Zhu, Z. Xu, Z. Hao, L. Chen, Carbon 45 (2007) 3045-3046.

 

* Corresponding author. E-mail address: espinace@ipen.br