Effect of the type of Pt precursor on Pt-Ni nanostructures for electro-oxidation of ammonia

Haengsoo Kim; Dongsin Won; Hong Ki Lee; Sung Jong Yoo; Kee Suk Nahm; Pil Kim

doi:10.1016/j.matchemphys.2014.06.012

Effect of the type of Pt precursor on Pt-Ni nanostructures for electro-oxidation of ammonia

Haengsoo Kim
, Dongsin Won
, Hong Ki Lee
, Sung Jong Yoo
, Kee Suk Nahm
, Pil Kim^*

^*Corresponding author for this work

Division of Chemical Engineering

Jeonbuk National University
Hydrogen Fuel Cell Parts and Applied Technology Regional Innovation Center
Korea Institute of Science and Technology

Research output: Contribution to journal › Journal article › peer-review

12 Scopus citations

Abstract

The properties of Pt-Ni nanostructures were successfully controlled by employing different Pt precursors in the preparation of Pt-Ni nanocomposites, which were synthesized by a co-reducing Pt and Ni precursors. Pt-Ni nanostructures were obtained by leaching Ni species from the Pt-Ni nanocomposite. The use of H₂PtCl₆ as a precursor yielded aggregated small Pt particles, while [Pt(NH₃)₄]Cl ₂ yielded large hollow Pt nanostructures. A possible mechanism leading to the morphological difference between the two structures was suggested. Owing to a higher electrochemically active surface area and a favorable surface structure, hollow Pt nanostructures from the [Pt(NH ₃)₄]Cl₂ precursor showed significantly better performance in ammonia oxidation than the aggregated Pt particles resulting from the H₂PtCl₆ precursor.

Original language	English
Pages (from-to)	722-727
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	147
Issue number	3
DOIs	https://doi.org/10.1016/j.matchemphys.2014.06.012
State	Published - 2014.10.15

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Composite materials
Electrochemical properties
Electrochemical techniques
Nanostructures

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Physics & Astronomy

Access to Document

10.1016/j.matchemphys.2014.06.012

Cite this

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title = "Effect of the type of Pt precursor on Pt-Ni nanostructures for electro-oxidation of ammonia",

abstract = "The properties of Pt-Ni nanostructures were successfully controlled by employing different Pt precursors in the preparation of Pt-Ni nanocomposites, which were synthesized by a co-reducing Pt and Ni precursors. Pt-Ni nanostructures were obtained by leaching Ni species from the Pt-Ni nanocomposite. The use of H2PtCl6 as a precursor yielded aggregated small Pt particles, while [Pt(NH3)4]Cl 2 yielded large hollow Pt nanostructures. A possible mechanism leading to the morphological difference between the two structures was suggested. Owing to a higher electrochemically active surface area and a favorable surface structure, hollow Pt nanostructures from the [Pt(NH 3)4]Cl2 precursor showed significantly better performance in ammonia oxidation than the aggregated Pt particles resulting from the H2PtCl6 precursor.",

keywords = "Composite materials, Electrochemical properties, Electrochemical techniques, Nanostructures",

author = "Haengsoo Kim and Dongsin Won and Lee, \{Hong Ki\} and Yoo, \{Sung Jong\} and Nahm, \{Kee Suk\} and Pil Kim",

year = "2014",

month = oct,

day = "15",

doi = "10.1016/j.matchemphys.2014.06.012",

language = "English",

volume = "147",

pages = "722--727",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

number = "3",

}

TY - JOUR

T1 - Effect of the type of Pt precursor on Pt-Ni nanostructures for electro-oxidation of ammonia

AU - Kim, Haengsoo

AU - Won, Dongsin

AU - Lee, Hong Ki

AU - Yoo, Sung Jong

AU - Nahm, Kee Suk

AU - Kim, Pil

PY - 2014/10/15

Y1 - 2014/10/15

N2 - The properties of Pt-Ni nanostructures were successfully controlled by employing different Pt precursors in the preparation of Pt-Ni nanocomposites, which were synthesized by a co-reducing Pt and Ni precursors. Pt-Ni nanostructures were obtained by leaching Ni species from the Pt-Ni nanocomposite. The use of H2PtCl6 as a precursor yielded aggregated small Pt particles, while [Pt(NH3)4]Cl 2 yielded large hollow Pt nanostructures. A possible mechanism leading to the morphological difference between the two structures was suggested. Owing to a higher electrochemically active surface area and a favorable surface structure, hollow Pt nanostructures from the [Pt(NH 3)4]Cl2 precursor showed significantly better performance in ammonia oxidation than the aggregated Pt particles resulting from the H2PtCl6 precursor.

AB - The properties of Pt-Ni nanostructures were successfully controlled by employing different Pt precursors in the preparation of Pt-Ni nanocomposites, which were synthesized by a co-reducing Pt and Ni precursors. Pt-Ni nanostructures were obtained by leaching Ni species from the Pt-Ni nanocomposite. The use of H2PtCl6 as a precursor yielded aggregated small Pt particles, while [Pt(NH3)4]Cl 2 yielded large hollow Pt nanostructures. A possible mechanism leading to the morphological difference between the two structures was suggested. Owing to a higher electrochemically active surface area and a favorable surface structure, hollow Pt nanostructures from the [Pt(NH 3)4]Cl2 precursor showed significantly better performance in ammonia oxidation than the aggregated Pt particles resulting from the H2PtCl6 precursor.

KW - Composite materials

KW - Electrochemical properties

KW - Electrochemical techniques

KW - Nanostructures

UR - https://www.scopus.com/pages/publications/84905679762

U2 - 10.1016/j.matchemphys.2014.06.012

DO - 10.1016/j.matchemphys.2014.06.012

M3 - Journal article

AN - SCOPUS:84905679762

SN - 0254-0584

VL - 147

SP - 722

EP - 727

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 3

ER -

Effect of the type of Pt precursor on Pt-Ni nanostructures for electro-oxidation of ammonia

Abstract

UN SDGs

Keywords

Quacquarelli Symonds(QS) Subject Topics

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