Cubic-like PtCuRu Nanocrystals with High Activity and Stability for Methanol Electro-oxidation

Abstract

Porous cubic-like PtCu and PtCuRu nanocrystals, which had a similar porous three-dimensional structure, were successfully prepared via the one-pot method. During the growth of the nanocrystals, cetyltrimethylammonium chloride and ascorbic acid were employed as the structure director and assistant reducing agent, respectively. The structure and possible formation of the nanocrystals were investigated. It is worth mentioning that the PtCuRu nanocrystals demonstrated a much better methanol electro-oxidation ability and ultrahigh stability, which displayed 3.4- and 3-fold higher specific and mass activity, respectively, than the commercial Pt/C. The advantage of PtCuRu nanocrystals was possibly ascribed to the synergistic effect of Cu and the porous structure and, more importantly, the presence of Ru that could more efficiently eliminate the harmful intermediates.

Pt1(CeO2)0.5 Nanoparticles Supported on Multiwalled Carbon Nanotubes for Methanol Electro-oxidation

“…To overcome these issues, Pt-based alloyed catalysts, including bimetallic alloy [PtM (M = Er, Pr, Ce, Dy, Tb, Nd, Ho, etc. ), Pt/MO 2 (M = Ce, Pr, Nd, and Sm), PtRh, , PtCu, , and PtNi , ], ternary alloy (PtFeCu, PtCuRu, PtCuBi, PtCuCo, and PtCuPd), and quaternary alloy (PtCuCoNi, PtCoNiMo, and PtRuFeCo) catalysts, were prepared. Particularly, catalysts mixed with CeO 2 have received wide attention.…”

Platinum‐Based Electrocatalysts for Direct Alcohol Fuel Cells: Enhanced Performances toward Alcohol Oxidation Reactions

“… Summary of MA and SA values in recent reported works for Pt‐based electrocatalysts with different composition and commercial Pt/C toward MOR. (1, [111] 2, [112] 3, [113] 4, [114] 5, [115] 6, [116] 7, [117] 8, [118] 9, [122] ). …”

“…[24,105] To date, many elementals, such as Ni, Co, Fe, Cu, Au, Pd, Rh, Os, Ir, Ga, and so forth, have been introduced into Pt to form bior multi-metallic nanostructures. [24,46,47,99,[106][107][108][109][110][111][112][113][114][115][116][117][118] Figure 6 gives a summary of the MA and SA of Pt-based electrocatalysts with different compositions compared with commercial Pt/C, which illustrates that formation of alloy can remarkably enhance the electrocatalytic performance. Recently, Zhang's group modified the electronic structure of Pt through incorporating Ni into Pt.…”

“…Copyright (2018) American Chemical Society. [111] 2, [112] 3, [113] 4, [114] 5, [115] 6, [116] 7, [117] 8, [118] 9, [122] ). introduction of Cu decreases the d-band energy of Pt by transferring charge from Cu to Pt and the Rh presence promotes the CÀ C bond cleavage.…”

PtRuFe/Carbon Nanotube Composites as Bifunctional Catalysts for Efficient Methanol Oxidation and Oxygen Reduction

“…Related reports have confirmed that the increase of heteroatomic interaction in ternary alloys was the reason for the significant improvement of catalytic activity. 29 Bai et al 30 synthesized the porous cubiclike PtCuRu nanocrystals by the one-pot method. The results displayed that the PtCuRu nanocrystals exhibited more excellent MOR ability and outstanding stability.…”