Alloy tetrahexahedral Pd–Pt catalysts: enhancing significantly the catalytic activity by synergy effect of high-index facets and electronic structure

Deng, Yujia; Tian, Na; Zhou, Zhi‐You; Huang, Rui; Liu, Zili; Xiao, Jing; Sun, Shi‐Gang

doi:10.1039/c2sc00723a

Cited by 157 publications

(114 citation statements)

References 42 publications

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“…[22][23][24][25][26][27][28][29][30] An alternative approach is to tailor the nanostructures of Pt-based catalysts to obtain high performance. [31][32][33][34][35][36][37][38][39] Noble metal nanomaterials embedded in one-dimensional (1D) nanotube arrays have been highlighted in literature reports. [40][41] In contrast to nanoparticles, 1D nanotube arrays can obviously improve the mass transport and catalyst utilization because of their unique anisotropy and hollow nanostructures, which make them less vulnerable to dissolution, Ostwald ripening and aggregation during fuel cell operation.…”

Section: Introductionmentioning

confidence: 99%

High-performance polypyrrole functionalized PtPd electrocatalysts based on PtPd/PPy/PtPd three-layered nanotube arrays for the electrooxidation of small organic molecules

Ding

Liang

et al. 2013

NPG Asia Mater

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Here, we report novel high-performance polypyrrole (PPy) functionalized PtPd electrocatalysts based on PtPd/PPy/PtPd threelayered nanotube arrays (TNTAs) for the electrooxidation of small organic molecules, such as methanol, ethanol and formic acid, which are superior fuels for direct alcohol fuel cells (DAFCs) or direct formic acid fuel cells (DFAFCs). The unique hollow structures, array structures and sandwich-like structures of PtPd/PPy/PtPd TNTAs will provide fast transport and short diffusion paths for electroactive species as well as a large exposed surface area for efficient interaction with electroactive species. In particular, the unique sandwich-like structure of PtPd/PPy/PtPd TNTAs results in electron delocalization among the Pt 4f orbitals, Pd 3d orbitals and PPy p-conjugated ligands, and in electron transfer from the PPy to Pt and Pd atoms, leading to higher contents of metallic Pt and Pd and synergistic effects for electrocatalytic reactions. Because of the above merits, the designed PtPd/PPy/PtPd TNTAs exhibit significantly improved catalytic activity and durability for the electrooxidation of small organic molecules compared with those of PtPd TNTAs and commercial Pt/C and Pd/C catalysts.

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Section: Introductionmentioning

confidence: 99%

High-performance polypyrrole functionalized PtPd electrocatalysts based on PtPd/PPy/PtPd three-layered nanotube arrays for the electrooxidation of small organic molecules

Ding

Liang

et al. 2013

NPG Asia Mater

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“…In Handbook of Nanoparticles DOI 10.1007/978-3-319-13188-7_50-1 # Springer International Publishing Switzerland 2015 addition, in all these contributions, special attention has been paid to ensure the surface cleaning of the different metal nanoparticles. [75,76] Sun and coworkers have reported very significant contributions on the electrocatalytic properties of metal nanoparticles containing high-index planes [6,7,57,58]. It is well known from single-crystal studies that for many electrocatalytic reactions high-index single-crystal surfaces with high step/kink density show enhanced electrocatalytic reactivity due to the fact that these high-index planes have a large density of low-coordinated atoms placed on the steps and kinks.…”

Section: Strategies To Control the Surface Atomic Arrangementmentioning

confidence: 96%

Surface Treatment Strategies on Catalytic Metal Nanoparticles

Vidal‐Iglesias

Gómez-Mingot

Sollá-Gullón

2015

Handbook of Nanoparticles

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Metal nanoparticles are materials of great scientific interest with a vast number of applications. In catalysis, also including electrocatalysis, the use of metal nanoparticles has provided very remarkable advances, and they are being applied in many reactions to obtain enhanced catalytic activity and/or to modify their catalytic selectivity. Nevertheless, in order to optimize/modulate these (electro)catalytic properties, it is frequently required to have a fine control of their surface. In this chapter, different surface treatment strategies for metal nanoparticles and their effects from a catalytic point of view are reviewed. Finally, a brief section devoted to the use of metal nanoparticles as platforms for biomolecules attachment for biosensing and bioanalytical applications is also included.

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“…A typical example is that the synthesized THH Pt-Pd alloy NPs, which mainly enclosed by {10 3 0} high-index facets, exhibit a catalytic activity at least three times higher than the THH Pd NPs, and six times higher than commercial Pd black catalysts for the electrooxidation of formic acid due to the synergy effects of highindex facets and electronic structures of the alloy [9].…”

Section: Introductionmentioning

confidence: 99%

Structural optimization of Pt–Pd alloy nanoparticles using an improved discrete particle swarm optimization algorithm

Shao

Ting-Na

Liu

et al. 2015

Computer Physics Communications

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Alloy tetrahexahedral Pd–Pt catalysts: enhancing significantly the catalytic activity by synergy effect of high-index facets and electronic structure

Cited by 157 publications

References 42 publications

High-performance polypyrrole functionalized PtPd electrocatalysts based on PtPd/PPy/PtPd three-layered nanotube arrays for the electrooxidation of small organic molecules

High-performance polypyrrole functionalized PtPd electrocatalysts based on PtPd/PPy/PtPd three-layered nanotube arrays for the electrooxidation of small organic molecules

Surface Treatment Strategies on Catalytic Metal Nanoparticles

Structural optimization of Pt–Pd alloy nanoparticles using an improved discrete particle swarm optimization algorithm

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