Promoting electrocatalytic methanol oxidation of platinum nanoparticles by cerium modification

Ligang Chen; Xin Liang; Xiaotong Li; Jiajing Pei; He Lin; Dianzeng Jia; Wenxing Chen; Dingsheng Wang; Yadong Li

doi:10.1016/j.nanoen.2020.104784

Promoting electrocatalytic methanol oxidation of platinum nanoparticles by cerium modification

Ligang Chen, Xin Liang^*, Xiaotong Li, Jiajing Pei, He Lin, Dianzeng Jia, Wenxing Chen, Dingsheng Wang, Yadong Li

^*Corresponding author for this work

School of Material Science and Engineering

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

70 Citations (Scopus)

Abstract

The improvement of performance for Pt-based electrocatalysts is of significant importance. Here we synthesized a Ce-modified Pt nanoparticle (NP) with Cerium (III) oxygenated species (1 wt% Ce content) anchored on Pt NPs for methanol oxidation reaction (MOR). High-angle annular dark field-scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy were combined to prove and analyze this special structure. Surprisingly, the electrocatalytic activity of the Ce-modified Pt NPs for MOR reached 1470 mA/mg_-Pt and 8670 mA/mg_-Pt in acidic and alkaline media, respectively, which were superior to those of the Pt NPs/C and commercial Pt/C. Density functional calculations showed that the structure of Pt surface was deformed by the modification of Cerium, which made CO* + OH* bind more strongly, and the stronger anchoring of OH* induced the easier removal of CO* in the potential determining step. This work would provide an effective strategy to develop efficient MOR electrocatalysts.

Original language	English
Article number	104784
Journal	Nano Energy
Volume	73
DOIs	https://doi.org/10.1016/j.nanoen.2020.104784
Publication status	Published - Jul 2020

Keywords

Cerium oxygenated species
Electrocatalysis
Methanol oxidation reaction
Modification
Platinum nanoparticle

UN SDGs

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

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10.1016/j.nanoen.2020.104784

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title = "Promoting electrocatalytic methanol oxidation of platinum nanoparticles by cerium modification",

abstract = "The improvement of performance for Pt-based electrocatalysts is of significant importance. Here we synthesized a Ce-modified Pt nanoparticle (NP) with Cerium (III) oxygenated species (1 wt% Ce content) anchored on Pt NPs for methanol oxidation reaction (MOR). High-angle annular dark field-scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy were combined to prove and analyze this special structure. Surprisingly, the electrocatalytic activity of the Ce-modified Pt NPs for MOR reached 1470 mA/mg-Pt and 8670 mA/mg-Pt in acidic and alkaline media, respectively, which were superior to those of the Pt NPs/C and commercial Pt/C. Density functional calculations showed that the structure of Pt surface was deformed by the modification of Cerium, which made CO* + OH* bind more strongly, and the stronger anchoring of OH* induced the easier removal of CO* in the potential determining step. This work would provide an effective strategy to develop efficient MOR electrocatalysts.",

keywords = "Cerium oxygenated species, Electrocatalysis, Methanol oxidation reaction, Modification, Platinum nanoparticle",

author = "Ligang Chen and Xin Liang and Xiaotong Li and Jiajing Pei and He Lin and Dianzeng Jia and Wenxing Chen and Dingsheng Wang and Yadong Li",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = jul,

doi = "10.1016/j.nanoen.2020.104784",

language = "English",

volume = "73",

journal = "Nano Energy",

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TY - JOUR

T1 - Promoting electrocatalytic methanol oxidation of platinum nanoparticles by cerium modification

AU - Chen, Ligang

AU - Liang, Xin

AU - Li, Xiaotong

AU - Pei, Jiajing

AU - Lin, He

AU - Jia, Dianzeng

AU - Chen, Wenxing

AU - Wang, Dingsheng

AU - Li, Yadong

PY - 2020/7

Y1 - 2020/7

N2 - The improvement of performance for Pt-based electrocatalysts is of significant importance. Here we synthesized a Ce-modified Pt nanoparticle (NP) with Cerium (III) oxygenated species (1 wt% Ce content) anchored on Pt NPs for methanol oxidation reaction (MOR). High-angle annular dark field-scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy were combined to prove and analyze this special structure. Surprisingly, the electrocatalytic activity of the Ce-modified Pt NPs for MOR reached 1470 mA/mg-Pt and 8670 mA/mg-Pt in acidic and alkaline media, respectively, which were superior to those of the Pt NPs/C and commercial Pt/C. Density functional calculations showed that the structure of Pt surface was deformed by the modification of Cerium, which made CO* + OH* bind more strongly, and the stronger anchoring of OH* induced the easier removal of CO* in the potential determining step. This work would provide an effective strategy to develop efficient MOR electrocatalysts.

AB - The improvement of performance for Pt-based electrocatalysts is of significant importance. Here we synthesized a Ce-modified Pt nanoparticle (NP) with Cerium (III) oxygenated species (1 wt% Ce content) anchored on Pt NPs for methanol oxidation reaction (MOR). High-angle annular dark field-scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy were combined to prove and analyze this special structure. Surprisingly, the electrocatalytic activity of the Ce-modified Pt NPs for MOR reached 1470 mA/mg-Pt and 8670 mA/mg-Pt in acidic and alkaline media, respectively, which were superior to those of the Pt NPs/C and commercial Pt/C. Density functional calculations showed that the structure of Pt surface was deformed by the modification of Cerium, which made CO* + OH* bind more strongly, and the stronger anchoring of OH* induced the easier removal of CO* in the potential determining step. This work would provide an effective strategy to develop efficient MOR electrocatalysts.

KW - Cerium oxygenated species

KW - Electrocatalysis

KW - Methanol oxidation reaction

KW - Modification

KW - Platinum nanoparticle

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U2 - 10.1016/j.nanoen.2020.104784

DO - 10.1016/j.nanoen.2020.104784

M3 - Article

AN - SCOPUS:85083704004

SN - 2211-2855

VL - 73

JO - Nano Energy

JF - Nano Energy

M1 - 104784

ER -

Promoting electrocatalytic methanol oxidation of platinum nanoparticles by cerium modification

Abstract

Keywords

UN SDGs

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