Pt-loaded Au@CeO2 core-shell nanocatalysts for improving methanol oxidation reaction activity

Dung Van Dao; Thanh Duc Le; Ganpurev Adilbish; In Hwan Lee; Yeon Tae Yu

doi:10.1039/c9ta09333h

Pt-loaded Au@CeO₂ core-shell nanocatalysts for improving methanol oxidation reaction activity

Dung Van Dao
, Thanh Duc Le
, Ganpurev Adilbish
, In Hwan Lee^*
, Yeon Tae Yu

^*Corresponding author for this work

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

62 Citations (Scopus)

Abstract

Herein, we provide a facile hydrothermal process for ultralow Pt loading (3.84 wt%) on the porous surface of an Au@CeO₂ core-shell nanocatalyst (CSNC) in order to improve the electrocatalytic property of bare Pt towards the methanol oxidation reaction (MOR). The Au@CeO₂@Pt CSNC demonstrated a high BET surface area (88.10 m² g^-1) and high numbers of catalytic surface active species (such as Pt⁰, Ce³⁺ and oxygen vacancies). The corresponding electrode obtained by spraying the Au@CeO₂@Pt CSNC onto the microporous layer (MPL) of carbon cloth (Au@CeO₂@Pt/C) showed better electrocatalytic properties, such as high electrochemical surface area (ECSA-80 m² g^-1) and low charge transfer resistance (37 Ω) than CeO₂@Pt/C (52 m² g^-1 and 106 Ω) and commercial Pt/C (44 m² g^-1 and 182 Ω). Furthermore, the positive catalytic properties of the Au@CeO₂@Pt/C electrode were investigated via MOR mass activity which at 1.36 A mg_Pt^-1, was 1.5 and 2.0 times higher than those obtained from the CeO₂@Pt/C (0.92 A mg_Pt^-1) and commercial Pt/C (0.67 A mg_Pt^-1) electrodes, respectively. Moreover, the Au@CeO₂@Pt/C electrocatalyst also had good MOR durability and high CO tolerance. The electrocatalytic enhancement of the Au@CeO₂@Pt CSNC could be the result of the electronic, bifunctional and synergistic effects between the Au, CeO₂ and Pt components supported on the carbon cloth. Accordingly, these advantageous effects easily removed the adsorbed CO intermediate as the main poisoner on the surface of the Pt catalyst, and thereby significantly improved the overall MOR activity.

Original language	English
Pages (from-to)	26996-27006
Number of pages	11
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	47
DOIs	https://doi.org/10.1039/c9ta09333h
Publication status	Published - 2019

Bibliographical note

Funding Information:
This work was supported by (1) the BK21 Plus Program of the Ministry of Education and Human-Resource Development, South of Korea; (2) a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (BRL No. 2015042417, 2016R1A2B4014090, 2017R1A2B3006141).

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

UN SDGs

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

SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

Access to Document

10.1039/c9ta09333h

Cite this

@article{23beaab857084600b420ade5a9fb3b54,

title = "Pt-loaded Au@CeO2 core-shell nanocatalysts for improving methanol oxidation reaction activity",

abstract = "Herein, we provide a facile hydrothermal process for ultralow Pt loading (3.84 wt\%) on the porous surface of an Au@CeO2 core-shell nanocatalyst (CSNC) in order to improve the electrocatalytic property of bare Pt towards the methanol oxidation reaction (MOR). The Au@CeO2@Pt CSNC demonstrated a high BET surface area (88.10 m2 g-1) and high numbers of catalytic surface active species (such as Pt0, Ce3+ and oxygen vacancies). The corresponding electrode obtained by spraying the Au@CeO2@Pt CSNC onto the microporous layer (MPL) of carbon cloth (Au@CeO2@Pt/C) showed better electrocatalytic properties, such as high electrochemical surface area (ECSA-80 m2 g-1) and low charge transfer resistance (37 Ω) than CeO2@Pt/C (52 m2 g-1 and 106 Ω) and commercial Pt/C (44 m2 g-1 and 182 Ω). Furthermore, the positive catalytic properties of the Au@CeO2@Pt/C electrode were investigated via MOR mass activity which at 1.36 A mgPt-1, was 1.5 and 2.0 times higher than those obtained from the CeO2@Pt/C (0.92 A mgPt-1) and commercial Pt/C (0.67 A mgPt-1) electrodes, respectively. Moreover, the Au@CeO2@Pt/C electrocatalyst also had good MOR durability and high CO tolerance. The electrocatalytic enhancement of the Au@CeO2@Pt CSNC could be the result of the electronic, bifunctional and synergistic effects between the Au, CeO2 and Pt components supported on the carbon cloth. Accordingly, these advantageous effects easily removed the adsorbed CO intermediate as the main poisoner on the surface of the Pt catalyst, and thereby significantly improved the overall MOR activity.",

author = "Dao, \{Dung Van\} and Le, \{Thanh Duc\} and Ganpurev Adilbish and Lee, \{In Hwan\} and Yu, \{Yeon Tae\}",

note = "Funding Information: This work was supported by (1) the BK21 Plus Program of the Ministry of Education and Human-Resource Development, South of Korea; (2) a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (BRL No. 2015042417, 2016R1A2B4014090, 2017R1A2B3006141). Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

year = "2019",

doi = "10.1039/c9ta09333h",

language = "English",

volume = "7",

pages = "26996--27006",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

number = "47",

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TY - JOUR

T1 - Pt-loaded Au@CeO2 core-shell nanocatalysts for improving methanol oxidation reaction activity

AU - Dao, Dung Van

AU - Le, Thanh Duc

AU - Adilbish, Ganpurev

AU - Lee, In Hwan

AU - Yu, Yeon Tae

N1 - Funding Information: This work was supported by (1) the BK21 Plus Program of the Ministry of Education and Human-Resource Development, South of Korea; (2) a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (BRL No. 2015042417, 2016R1A2B4014090, 2017R1A2B3006141). Publisher Copyright: © 2019 The Royal Society of Chemistry.

PY - 2019

Y1 - 2019

N2 - Herein, we provide a facile hydrothermal process for ultralow Pt loading (3.84 wt%) on the porous surface of an Au@CeO2 core-shell nanocatalyst (CSNC) in order to improve the electrocatalytic property of bare Pt towards the methanol oxidation reaction (MOR). The Au@CeO2@Pt CSNC demonstrated a high BET surface area (88.10 m2 g-1) and high numbers of catalytic surface active species (such as Pt0, Ce3+ and oxygen vacancies). The corresponding electrode obtained by spraying the Au@CeO2@Pt CSNC onto the microporous layer (MPL) of carbon cloth (Au@CeO2@Pt/C) showed better electrocatalytic properties, such as high electrochemical surface area (ECSA-80 m2 g-1) and low charge transfer resistance (37 Ω) than CeO2@Pt/C (52 m2 g-1 and 106 Ω) and commercial Pt/C (44 m2 g-1 and 182 Ω). Furthermore, the positive catalytic properties of the Au@CeO2@Pt/C electrode were investigated via MOR mass activity which at 1.36 A mgPt-1, was 1.5 and 2.0 times higher than those obtained from the CeO2@Pt/C (0.92 A mgPt-1) and commercial Pt/C (0.67 A mgPt-1) electrodes, respectively. Moreover, the Au@CeO2@Pt/C electrocatalyst also had good MOR durability and high CO tolerance. The electrocatalytic enhancement of the Au@CeO2@Pt CSNC could be the result of the electronic, bifunctional and synergistic effects between the Au, CeO2 and Pt components supported on the carbon cloth. Accordingly, these advantageous effects easily removed the adsorbed CO intermediate as the main poisoner on the surface of the Pt catalyst, and thereby significantly improved the overall MOR activity.

AB - Herein, we provide a facile hydrothermal process for ultralow Pt loading (3.84 wt%) on the porous surface of an Au@CeO2 core-shell nanocatalyst (CSNC) in order to improve the electrocatalytic property of bare Pt towards the methanol oxidation reaction (MOR). The Au@CeO2@Pt CSNC demonstrated a high BET surface area (88.10 m2 g-1) and high numbers of catalytic surface active species (such as Pt0, Ce3+ and oxygen vacancies). The corresponding electrode obtained by spraying the Au@CeO2@Pt CSNC onto the microporous layer (MPL) of carbon cloth (Au@CeO2@Pt/C) showed better electrocatalytic properties, such as high electrochemical surface area (ECSA-80 m2 g-1) and low charge transfer resistance (37 Ω) than CeO2@Pt/C (52 m2 g-1 and 106 Ω) and commercial Pt/C (44 m2 g-1 and 182 Ω). Furthermore, the positive catalytic properties of the Au@CeO2@Pt/C electrode were investigated via MOR mass activity which at 1.36 A mgPt-1, was 1.5 and 2.0 times higher than those obtained from the CeO2@Pt/C (0.92 A mgPt-1) and commercial Pt/C (0.67 A mgPt-1) electrodes, respectively. Moreover, the Au@CeO2@Pt/C electrocatalyst also had good MOR durability and high CO tolerance. The electrocatalytic enhancement of the Au@CeO2@Pt CSNC could be the result of the electronic, bifunctional and synergistic effects between the Au, CeO2 and Pt components supported on the carbon cloth. Accordingly, these advantageous effects easily removed the adsorbed CO intermediate as the main poisoner on the surface of the Pt catalyst, and thereby significantly improved the overall MOR activity.

UR - https://www.scopus.com/pages/publications/85076026043

U2 - 10.1039/c9ta09333h

DO - 10.1039/c9ta09333h

M3 - Article

AN - SCOPUS:85076026043

SN - 2050-7488

VL - 7

SP - 26996

EP - 27006

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 47

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