2015
DOI: 10.1021/jacs.5b10059
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Pd@Pt Core–Shell Concave Decahedra: A Class of Catalysts for the Oxygen Reduction Reaction with Enhanced Activity and Durability

Abstract: We report a facile synthesis of multiply twinned Pd@Pt core-shell concave decahedra by controlling the deposition of Pt on preformed Pd decahedral seeds. The Pt atoms are initially deposited on the vertices of a decahedral seed, followed by surface diffusion to other regions along the edges/ridges and then across the faces. Different from the coating of a Pd icosahedral seed, the Pt atoms prefer to stay at the vertices and edges/ridges of a decahedral seed even when the deposition is conducted at 200 °C, natur… Show more

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Cited by 308 publications
(255 citation statements)
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“…Obtaining nanoparticles is currently a very active research field with a wide variety of technical applications in catalysis [1][2][3], photonics [4], and energy conversion and storage devices [5][6][7]. The applications of nanoparticles are expected to improve many fields of advanced materials.…”
Section: Introductionmentioning
confidence: 99%
“…Obtaining nanoparticles is currently a very active research field with a wide variety of technical applications in catalysis [1][2][3], photonics [4], and energy conversion and storage devices [5][6][7]. The applications of nanoparticles are expected to improve many fields of advanced materials.…”
Section: Introductionmentioning
confidence: 99%
“…This wet chemical deposition method is also referred to as the two-step seed-mediated growth method and has been used as early as 1996 to prepare bimetallic core-shell nanoparticles of Au@Pd, Au@Pt, and Pt@Pd using ethanol as a reducing agent in the presence of PVP [38]. Many other core-shell-structured electrocatalysts have also been prepared by using this method [37,[39][40][41][42][43][44][45][46][47][48][49]. For example, Wang et al [37] prepared a core-shell-structured Pd@Pt concave decahedra (Fig.…”
Section: Principles and Development Of Wet Chemical Depositionmentioning
confidence: 99%
“…Many other core-shell-structured electrocatalysts have also been prepared by using this method [37,[39][40][41][42][43][44][45][46][47][48][49]. For example, Wang et al [37] prepared a core-shell-structured Pd@Pt concave decahedra (Fig. 4) through Pt epitaxial growth covered on Pd decahedral seeds with the presence of PVP ligands, ascorbic acid (AA) reducer, and KBr supplement.…”
Section: Principles and Development Of Wet Chemical Depositionmentioning
confidence: 99%
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