Surfactant-Free Monodispersed Pd Nanoparticles Template for Core-Shell Pd@PdPt Nanoparticles as Electrocatalyst towards Methanol Oxidation Reaction (MOR)

Fulin Zheng; Tsz Lung Kwong; Ka Fu Yung

doi:10.3390/nano12020260

Surfactant-Free Monodispersed Pd Nanoparticles Template for Core-Shell Pd@PdPt Nanoparticles as Electrocatalyst towards Methanol Oxidation Reaction (MOR)

Fulin Zheng, Tsz Lung Kwong, Ka Fu Yung

Research output: Journal article publication › Journal article › Academic research › peer-review

8 Citations (Scopus)

Abstract

An eco-friendly two-step synthetic method for synthesizing Pd@PdPt/CNTs nanoparticles was introduced and studied for the methanol oxidation reaction. The Pd@PdPt alloy core-shell structure was synthesized by preparing a surfactant-free monodispersed Pd/CNTs precursor through the hydrolysis of tetrachloropalladate (II) ion ([PdCl₄ ]²⁻ ) in the presence of carbon nanotubes (CNTs) and the subsequent hydrogen reduction and followed by a galvanic replacement reaction. This method opens up an eco-friendly, practical, and straightforward route for synthesizing monometallic or bimetallic nanoparticles with a clean surfactant-free electrocatalytic surface. It is quite promising for large-scale preparation. The Pd@PdPt/CNTs electrocatalyst demonstrated a high specific mass activity for methanol oxidation (400.2 mAmg_Pt⁻¹ ) and excellent stability towards direct methanol oxidation compared to its monometallic counterparts.

Original language	English
Article number	260
Journal	Nanomaterials
Volume	12
Issue number	2
DOIs	https://doi.org/10.3390/nano12020260
Publication status	Published - 14 Jan 2022

Keywords

Core-shell
Electrocatalysis
Fuel cells
Methanol oxidation
Nanoparticles
PdPt alloy

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science

More information

10.3390/nano12020260

http://hdl.handle.net/10397/91929

Cite this

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title = "Surfactant-Free Monodispersed Pd Nanoparticles Template for Core-Shell Pd@PdPt Nanoparticles as Electrocatalyst towards Methanol Oxidation Reaction (MOR)",

abstract = "An eco-friendly two-step synthetic method for synthesizing Pd@PdPt/CNTs nanoparticles was introduced and studied for the methanol oxidation reaction. The Pd@PdPt alloy core-shell structure was synthesized by preparing a surfactant-free monodispersed Pd/CNTs precursor through the hydrolysis of tetrachloropalladate (II) ion ([PdCl4 ]2− ) in the presence of carbon nanotubes (CNTs) and the subsequent hydrogen reduction and followed by a galvanic replacement reaction. This method opens up an eco-friendly, practical, and straightforward route for synthesizing monometallic or bimetallic nanoparticles with a clean surfactant-free electrocatalytic surface. It is quite promising for large-scale preparation. The Pd@PdPt/CNTs electrocatalyst demonstrated a high specific mass activity for methanol oxidation (400.2 mAmgPt−1 ) and excellent stability towards direct methanol oxidation compared to its monometallic counterparts.",

keywords = "Core-shell, Electrocatalysis, Fuel cells, Methanol oxidation, Nanoparticles, PdPt alloy",

author = "Fulin Zheng and Kwong, {Tsz Lung} and Yung, {Ka Fu}",

note = "Funding Information: This research was funded by Hong Kong Research Grants Council with a grant number of Poly U5033/13P. Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2022",

month = jan,

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doi = "10.3390/nano12020260",

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AU - Zheng, Fulin

AU - Kwong, Tsz Lung

AU - Yung, Ka Fu

N1 - Funding Information: This research was funded by Hong Kong Research Grants Council with a grant number of Poly U5033/13P. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2022/1/14

Y1 - 2022/1/14

N2 - An eco-friendly two-step synthetic method for synthesizing Pd@PdPt/CNTs nanoparticles was introduced and studied for the methanol oxidation reaction. The Pd@PdPt alloy core-shell structure was synthesized by preparing a surfactant-free monodispersed Pd/CNTs precursor through the hydrolysis of tetrachloropalladate (II) ion ([PdCl4 ]2− ) in the presence of carbon nanotubes (CNTs) and the subsequent hydrogen reduction and followed by a galvanic replacement reaction. This method opens up an eco-friendly, practical, and straightforward route for synthesizing monometallic or bimetallic nanoparticles with a clean surfactant-free electrocatalytic surface. It is quite promising for large-scale preparation. The Pd@PdPt/CNTs electrocatalyst demonstrated a high specific mass activity for methanol oxidation (400.2 mAmgPt−1 ) and excellent stability towards direct methanol oxidation compared to its monometallic counterparts.

AB - An eco-friendly two-step synthetic method for synthesizing Pd@PdPt/CNTs nanoparticles was introduced and studied for the methanol oxidation reaction. The Pd@PdPt alloy core-shell structure was synthesized by preparing a surfactant-free monodispersed Pd/CNTs precursor through the hydrolysis of tetrachloropalladate (II) ion ([PdCl4 ]2− ) in the presence of carbon nanotubes (CNTs) and the subsequent hydrogen reduction and followed by a galvanic replacement reaction. This method opens up an eco-friendly, practical, and straightforward route for synthesizing monometallic or bimetallic nanoparticles with a clean surfactant-free electrocatalytic surface. It is quite promising for large-scale preparation. The Pd@PdPt/CNTs electrocatalyst demonstrated a high specific mass activity for methanol oxidation (400.2 mAmgPt−1 ) and excellent stability towards direct methanol oxidation compared to its monometallic counterparts.

KW - Core-shell

KW - Electrocatalysis

KW - Fuel cells

KW - Methanol oxidation

KW - Nanoparticles

KW - PdPt alloy

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DO - 10.3390/nano12020260

M3 - Journal article

AN - SCOPUS:85122865533

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VL - 12

JO - Nanomaterials

JF - Nanomaterials

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ER -

Surfactant-Free Monodispersed Pd Nanoparticles Template for Core-Shell Pd@PdPt Nanoparticles as Electrocatalyst towards Methanol Oxidation Reaction (MOR)

Abstract

Keywords

ASJC Scopus subject areas

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