Pd@Pt core-shell nanostructures for improved electrocatalytic activity in methanol oxidation reaction

Young Woo Lee; Jin Yeon Lee; Da Hee Kwak; Eui Tak Hwang; Jung Inn Sohn; Kyung Won Park

doi:10.1016/j.apcatb.2015.05.029

Pd@Pt core-shell nanostructures for improved electrocatalytic activity in methanol oxidation reaction

Young Woo Lee
, Jin Yeon Lee
, Da Hee Kwak
, Eui Tak Hwang
, Jung Inn Sohn
, Kyung Won Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

The core-shell nanostructures are developed as a way to improve the specific mass activity of the catalyst for the methanol electrooxidation reaction. We prepared the shape-controlled Pd@Pt core-shell nanoparticles using a seeding method with hetero-nucleation process in the presence of PVP. The as-prepared Pd@Pt core-shell nanoparticles consist of a well-defined core-shell structure with a Pd core and Pt shell, cubic shape exposed {100} facets, ~97% yield, and approximately 2.5. nm thickness of Pt shell. The cubic Pd@Pt nanoparticles exhibit remarkably improved electrochemical properties i.e., improved specific mass current density and more negative potential of the forward peak for methanol electrooxidation in comparison with pure cubic Pt and commercial Pt electrocatalysts.

Original language	English
Pages (from-to)	178-184
Number of pages	7
Journal	Applied Catalysis B: Environmental
Volume	179
DOIs	https://doi.org/10.1016/j.apcatb.2015.05.029
State	Published - 1 Dec 2015

Keywords

Core shell
Cube
Methanol oxidation reaction
Palladium
Platinum

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10.1016/j.apcatb.2015.05.029

Cite this

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title = "Pd@Pt core-shell nanostructures for improved electrocatalytic activity in methanol oxidation reaction",

abstract = "The core-shell nanostructures are developed as a way to improve the specific mass activity of the catalyst for the methanol electrooxidation reaction. We prepared the shape-controlled Pd@Pt core-shell nanoparticles using a seeding method with hetero-nucleation process in the presence of PVP. The as-prepared Pd@Pt core-shell nanoparticles consist of a well-defined core-shell structure with a Pd core and Pt shell, cubic shape exposed \{100\} facets, \textasciitilde{}97\% yield, and approximately 2.5. nm thickness of Pt shell. The cubic Pd@Pt nanoparticles exhibit remarkably improved electrochemical properties i.e., improved specific mass current density and more negative potential of the forward peak for methanol electrooxidation in comparison with pure cubic Pt and commercial Pt electrocatalysts.",

keywords = "Core shell, Cube, Methanol oxidation reaction, Palladium, Platinum",

author = "Lee, \{Young Woo\} and Lee, \{Jin Yeon\} and Kwak, \{Da Hee\} and Hwang, \{Eui Tak\} and Sohn, \{Jung Inn\} and Park, \{Kyung Won\}",

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doi = "10.1016/j.apcatb.2015.05.029",

language = "English",

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TY - JOUR

T1 - Pd@Pt core-shell nanostructures for improved electrocatalytic activity in methanol oxidation reaction

AU - Lee, Young Woo

AU - Lee, Jin Yeon

AU - Kwak, Da Hee

AU - Hwang, Eui Tak

AU - Sohn, Jung Inn

AU - Park, Kyung Won

PY - 2015/12/1

Y1 - 2015/12/1

N2 - The core-shell nanostructures are developed as a way to improve the specific mass activity of the catalyst for the methanol electrooxidation reaction. We prepared the shape-controlled Pd@Pt core-shell nanoparticles using a seeding method with hetero-nucleation process in the presence of PVP. The as-prepared Pd@Pt core-shell nanoparticles consist of a well-defined core-shell structure with a Pd core and Pt shell, cubic shape exposed {100} facets, ~97% yield, and approximately 2.5. nm thickness of Pt shell. The cubic Pd@Pt nanoparticles exhibit remarkably improved electrochemical properties i.e., improved specific mass current density and more negative potential of the forward peak for methanol electrooxidation in comparison with pure cubic Pt and commercial Pt electrocatalysts.

AB - The core-shell nanostructures are developed as a way to improve the specific mass activity of the catalyst for the methanol electrooxidation reaction. We prepared the shape-controlled Pd@Pt core-shell nanoparticles using a seeding method with hetero-nucleation process in the presence of PVP. The as-prepared Pd@Pt core-shell nanoparticles consist of a well-defined core-shell structure with a Pd core and Pt shell, cubic shape exposed {100} facets, ~97% yield, and approximately 2.5. nm thickness of Pt shell. The cubic Pd@Pt nanoparticles exhibit remarkably improved electrochemical properties i.e., improved specific mass current density and more negative potential of the forward peak for methanol electrooxidation in comparison with pure cubic Pt and commercial Pt electrocatalysts.

KW - Core shell

KW - Cube

KW - Methanol oxidation reaction

KW - Palladium

KW - Platinum

UR - https://www.scopus.com/pages/publications/84929468222

U2 - 10.1016/j.apcatb.2015.05.029

DO - 10.1016/j.apcatb.2015.05.029

M3 - Article

AN - SCOPUS:84929468222

SN - 0926-3373

VL - 179

SP - 178

EP - 184

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

Pd@Pt core-shell nanostructures for improved electrocatalytic activity in methanol oxidation reaction

Abstract

Keywords

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