TY - JOUR
T1 - Oxygen reduction reaction on pt/C catalysts prepared by impregnation and liquid phase photo-deposition
AU - Ruiz-Camacho, B.
AU - Valenzuela, M. A.
AU - Perez-Galindo, J. A.
AU - Pola, F.
AU - Miki-Yoshida, M.
AU - Alonso-Vante, N.
AU - Gonzalez-Huerta, R. G.
PY - 2010
Y1 - 2010
N2 - Pt/C catalysts supported on carbon (5 wt.% Pt) synthesized by photo-deposition and impregnation methods were electrochemically evaluated in the oxygen reduction reaction. Platinum nanoparticles were prepared by photo-irradiation of Pt precursors (H2PtCl6 and C 10H14O4Pt) with UV-irradiation (365 nm) at room temperature. The photo-reduction of H2PtCl6 to metallic platinum (Pt4+→Pt2+→Pt0) was faster than C10H14O4Pt (Pt2+→Pt0) at the same operation conditions. The Pt/C samples were characterized by XRD, EDS, H2 chemisorption, TEM, cyclic and linear voltammetry techniques. XRD and TEM/EDS studies showed that Pt particles synthesized with C 10H14O4Pt by the photo-deposition method were smaller with a higher dispersion on carbon than those prepared with H 2PtCl6 A similar behavior was found when the impregnation method is used. The platinum particle size was smaller with C10H 14O4Pt as compared to H2PtCl6 precursor. The Pt/C catalyst synthesized with C10H14O 4Pt by the photo-deposition method displayed a catalytic activity in the oxygen reduction reaction comparable to a commercial 10 wt. % Pt/C, ETEK catalyst
AB - Pt/C catalysts supported on carbon (5 wt.% Pt) synthesized by photo-deposition and impregnation methods were electrochemically evaluated in the oxygen reduction reaction. Platinum nanoparticles were prepared by photo-irradiation of Pt precursors (H2PtCl6 and C 10H14O4Pt) with UV-irradiation (365 nm) at room temperature. The photo-reduction of H2PtCl6 to metallic platinum (Pt4+→Pt2+→Pt0) was faster than C10H14O4Pt (Pt2+→Pt0) at the same operation conditions. The Pt/C samples were characterized by XRD, EDS, H2 chemisorption, TEM, cyclic and linear voltammetry techniques. XRD and TEM/EDS studies showed that Pt particles synthesized with C 10H14O4Pt by the photo-deposition method were smaller with a higher dispersion on carbon than those prepared with H 2PtCl6 A similar behavior was found when the impregnation method is used. The platinum particle size was smaller with C10H 14O4Pt as compared to H2PtCl6 precursor. The Pt/C catalyst synthesized with C10H14O 4Pt by the photo-deposition method displayed a catalytic activity in the oxygen reduction reaction comparable to a commercial 10 wt. % Pt/C, ETEK catalyst
KW - Impregnation
KW - Liquid photo-deposition
KW - Oxygen reduction
KW - Platinum nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=79955019149&partnerID=8YFLogxK
M3 - Artículo
SN - 1480-2422
VL - 13
SP - 183
EP - 189
JO - Journal of New Materials for Electrochemical Systems
JF - Journal of New Materials for Electrochemical Systems
IS - 3
ER -