TY - GEN
T1 - Development of Sn@Pt core-shell nanostructures supported on vulcan and N-doped graphene as nanocatalysts for the ethylene glycol oxidation reaction
AU - Hernandez-Vazquez, G.
AU - Dessources, S.
AU - Alonso-Lemus, I. L.
AU - Escobar-Morales, B.
AU - Reguera, E.
AU - Rodriguez-Varela, F. J.
N1 - Publisher Copyright:
© 2018 by The Electrochemical Society. All rights reserved.
PY - 2018
Y1 - 2018
N2 - In this work, core-shell nanocatalysts based on Sn and Pt supported on Vulcan (Sn@Pt/C) and N-doped graphene (Sn@Pt/NG) have been synthesized by the polyol method. The core-shell nanocatalysts have been tested as anode materials for the ethylene glycol oxidation reaction (EGOR) and compared with monometallic Pt/C and Pt/NG in acid medium. Electrochemical characterization by cyclic voltammetry (CV) shows that Sn@Pt/C has a higher catalytic activity than Sn@Pt/NG, Pt/C and Pt/NG for the EGOR. For example, Sn@Pt/C generates a mass and specific current density 1.3 and 3.4 times higher than Pt/C. Sn@Pt/NG also shows higher mass and specific activity than Pt/C at low overpotentials. Moreover, Sn@Pt/C and Sn@Pt/NG oxidize COadj at more negative potential than the monometallic nanocatalysts. Meanwhile, the NG support shows a positive metal-support effect, since Pt/NG is more tolerant to COads than Pt/C.
AB - In this work, core-shell nanocatalysts based on Sn and Pt supported on Vulcan (Sn@Pt/C) and N-doped graphene (Sn@Pt/NG) have been synthesized by the polyol method. The core-shell nanocatalysts have been tested as anode materials for the ethylene glycol oxidation reaction (EGOR) and compared with monometallic Pt/C and Pt/NG in acid medium. Electrochemical characterization by cyclic voltammetry (CV) shows that Sn@Pt/C has a higher catalytic activity than Sn@Pt/NG, Pt/C and Pt/NG for the EGOR. For example, Sn@Pt/C generates a mass and specific current density 1.3 and 3.4 times higher than Pt/C. Sn@Pt/NG also shows higher mass and specific activity than Pt/C at low overpotentials. Moreover, Sn@Pt/C and Sn@Pt/NG oxidize COadj at more negative potential than the monometallic nanocatalysts. Meanwhile, the NG support shows a positive metal-support effect, since Pt/NG is more tolerant to COads than Pt/C.
UR - http://www.scopus.com/inward/record.url?scp=85058289657&partnerID=8YFLogxK
U2 - 10.1149/08613.0575ecst
DO - 10.1149/08613.0575ecst
M3 - Contribución a la conferencia
AN - SCOPUS:85058289657
SN - 9781510871731
T3 - ECS Transactions
SP - 575
EP - 584
BT - ECS Transactions
A2 - Jones, D.J.
A2 - Gasteiger, H.
A2 - Uchida, H.
A2 - Schmidt, T.J.
A2 - Buechi, F.
A2 - Swider-Lyons, K.E.
A2 - Pivovar, B.S.
A2 - Pintauro, P.N.
A2 - Ramani, V.K.
A2 - Fenton, J.M.
A2 - Strasser, P.
A2 - Ayers, K.E.
A2 - Weber, A.Z.
A2 - Fuller, T.F.
A2 - Mantz, R.A.
A2 - Xu, H.
A2 - Coutanceau, C.
A2 - Mitsushima, S.
A2 - Narayan, S.
A2 - Shirvanian, P.
A2 - Kim, Y.-T.
A2 - Gochi-Ponce, Y.
PB - Electrochemical Society Inc.
T2 - Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting
Y2 - 30 September 2018 through 4 October 2018
ER -