Elemental Segregation in Multimetallic Core-Shell Nanoplates

Faisal Saleem; Zhicheng Zhang; Xiaoya Cui; Yue Gong; Bo Chen; Zhuangchai Lai; Qinbai Yun; Lin Gu; Hua Zhang

doi:10.1021/jacs.9b05197

Elemental Segregation in Multimetallic Core-Shell Nanoplates

Faisal Saleem, Zhicheng Zhang, Xiaoya Cui, Yue Gong, Bo Chen, Zhuangchai Lai, Qinbai Yun, Lin Gu^*, Hua Zhang^*

^*Corresponding author for this work

Department of Chemistry

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

61 Citations (Scopus)

Abstract

In this work, we report an element segregation phenomenon in two-dimensional (2D) core-shell nanoplates, subsequently resulting in the formation of yolk-cage nanostructures after selective electrochemical etching. By using PtCu nanoplates as templates, PtCu@Pd core-shell nanoplates are formed. Interestingly, during the growth of Ru on the PtCu@Pd core-shell nanoplates, due to the selective element diffusion, PtCuPd@PdCu@Ru nanoplates are obtained. After selectively etching of PdCu in PtCuPd@PdCu@Ru using electrochemical method, the PtCuPd@Ru yolk-cage nanostructures are obtained. As a proof-of-concept application, this unique nanostructure shows superior electrocatalytic activity and stability toward the methanol oxidation reaction as compared to the PtCu nanoplates and commercial Pt/C catalyst.

Original language	English
Pages (from-to)	14496−14500
Journal	Journal of the American Chemical Society
Volume	141
Issue number	37
Online published	29 Aug 2019
DOIs	https://doi.org/10.1021/jacs.9b05197
Publication status	Published - 18 Sept 2019

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title = "Elemental Segregation in Multimetallic Core-Shell Nanoplates",

abstract = "In this work, we report an element segregation phenomenon in two-dimensional (2D) core-shell nanoplates, subsequently resulting in the formation of yolk-cage nanostructures after selective electrochemical etching. By using PtCu nanoplates as templates, PtCu@Pd core-shell nanoplates are formed. Interestingly, during the growth of Ru on the PtCu@Pd core-shell nanoplates, due to the selective element diffusion, PtCuPd@PdCu@Ru nanoplates are obtained. After selectively etching of PdCu in PtCuPd@PdCu@Ru using electrochemical method, the PtCuPd@Ru yolk-cage nanostructures are obtained. As a proof-of-concept application, this unique nanostructure shows superior electrocatalytic activity and stability toward the methanol oxidation reaction as compared to the PtCu nanoplates and commercial Pt/C catalyst.",

author = "Faisal Saleem and Zhicheng Zhang and Xiaoya Cui and Yue Gong and Bo Chen and Zhuangchai Lai and Qinbai Yun and Lin Gu and Hua Zhang",

year = "2019",

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doi = "10.1021/jacs.9b05197",

language = "English",

volume = "141",

pages = "14496−14500",

journal = "Journal of the American Chemical Society",

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TY - JOUR

T1 - Elemental Segregation in Multimetallic Core-Shell Nanoplates

AU - Saleem, Faisal

AU - Zhang, Zhicheng

AU - Cui, Xiaoya

AU - Gong, Yue

AU - Chen, Bo

AU - Lai, Zhuangchai

AU - Yun, Qinbai

AU - Gu, Lin

AU - Zhang, Hua

PY - 2019/9/18

Y1 - 2019/9/18

N2 - In this work, we report an element segregation phenomenon in two-dimensional (2D) core-shell nanoplates, subsequently resulting in the formation of yolk-cage nanostructures after selective electrochemical etching. By using PtCu nanoplates as templates, PtCu@Pd core-shell nanoplates are formed. Interestingly, during the growth of Ru on the PtCu@Pd core-shell nanoplates, due to the selective element diffusion, PtCuPd@PdCu@Ru nanoplates are obtained. After selectively etching of PdCu in PtCuPd@PdCu@Ru using electrochemical method, the PtCuPd@Ru yolk-cage nanostructures are obtained. As a proof-of-concept application, this unique nanostructure shows superior electrocatalytic activity and stability toward the methanol oxidation reaction as compared to the PtCu nanoplates and commercial Pt/C catalyst.

AB - In this work, we report an element segregation phenomenon in two-dimensional (2D) core-shell nanoplates, subsequently resulting in the formation of yolk-cage nanostructures after selective electrochemical etching. By using PtCu nanoplates as templates, PtCu@Pd core-shell nanoplates are formed. Interestingly, during the growth of Ru on the PtCu@Pd core-shell nanoplates, due to the selective element diffusion, PtCuPd@PdCu@Ru nanoplates are obtained. After selectively etching of PdCu in PtCuPd@PdCu@Ru using electrochemical method, the PtCuPd@Ru yolk-cage nanostructures are obtained. As a proof-of-concept application, this unique nanostructure shows superior electrocatalytic activity and stability toward the methanol oxidation reaction as compared to the PtCu nanoplates and commercial Pt/C catalyst.

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U2 - 10.1021/jacs.9b05197

DO - 10.1021/jacs.9b05197

M3 - RGC 21 - Publication in refereed journal

C2 - 31464430

SN - 0002-7863

VL - 141

SP - 14496−14500

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 37

ER -

Elemental Segregation in Multimetallic Core-Shell Nanoplates

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