Bimetallic Synergy from a Reaction-Driven Metal Oxide-Metal Interface of Pt-Co Bimetallic Nanoparticles

Yejin Song; Daeho Kim; Seunghwa Hong; Taek Seung Kim; Ki Jeong Kim; Jeong Young Park

doi:10.1021/acscatal.3c03133

Bimetallic Synergy from a Reaction-Driven Metal Oxide-Metal Interface of Pt-Co Bimetallic Nanoparticles

Yejin Song, Daeho Kim, Seunghwa Hong, Taek Seung Kim, Ki Jeong Kim, Jeong Young Park

Department of Energy Chemical Engineering

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

19 Scopus citations

Abstract

Bimetallic alloy nanoparticles (NPs) have unique electronic and geometric properties that are regarded as the origin of bimetallic synergy. However, this issue remains controversial because the surface structure, composition, and oxidation state of bimetallic NPs are altered during the catalytic reaction. Here, we investigate the formation and impact of the Pt-CoO interface on Pt-Co bimetallic NPs using state-of-the-art operando surface techniques, such as ambient-pressure X-ray photoelectron spectroscopy and diffuse reflectance infrared Fourier-transform spectroscopy. The Pt-CoO interfacial structures formed on the surface during the CO oxidation reaction play a key role in enhancing the catalytic activity. Our research indicates that the metal oxide-metal interface in bimetallic NPs provides a clue to bimetallic synergy.

Original language	English
Pages (from-to)	13777-13785
Number of pages	9
Journal	ACS Catalysis
Volume	13
Issue number	20
DOIs	https://doi.org/10.1021/acscatal.3c03133
State	Published - 20 Oct 2023

Keywords

Bimetallic nanoparticle
CO oxidation
bimetallic synergy
metal oxide−metal interface
operando spectroscopy
surface restructuring

Access to Document

10.1021/acscatal.3c03133

Cite this

@article{123e97885079443985c3f5560e52d188,

title = "Bimetallic Synergy from a Reaction-Driven Metal Oxide-Metal Interface of Pt-Co Bimetallic Nanoparticles",

abstract = "Bimetallic alloy nanoparticles (NPs) have unique electronic and geometric properties that are regarded as the origin of bimetallic synergy. However, this issue remains controversial because the surface structure, composition, and oxidation state of bimetallic NPs are altered during the catalytic reaction. Here, we investigate the formation and impact of the Pt-CoO interface on Pt-Co bimetallic NPs using state-of-the-art operando surface techniques, such as ambient-pressure X-ray photoelectron spectroscopy and diffuse reflectance infrared Fourier-transform spectroscopy. The Pt-CoO interfacial structures formed on the surface during the CO oxidation reaction play a key role in enhancing the catalytic activity. Our research indicates that the metal oxide-metal interface in bimetallic NPs provides a clue to bimetallic synergy.",

keywords = "Bimetallic nanoparticle, CO oxidation, bimetallic synergy, metal oxide−metal interface, operando spectroscopy, surface restructuring",

author = "Yejin Song and Daeho Kim and Seunghwa Hong and Kim, {Taek Seung} and Kim, {Ki Jeong} and Park, {Jeong Young}",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

month = oct,

day = "20",

doi = "10.1021/acscatal.3c03133",

language = "English",

volume = "13",

pages = "13777--13785",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "American Chemical Society",

number = "20",

}

TY - JOUR

T1 - Bimetallic Synergy from a Reaction-Driven Metal Oxide-Metal Interface of Pt-Co Bimetallic Nanoparticles

AU - Song, Yejin

AU - Kim, Daeho

AU - Hong, Seunghwa

AU - Kim, Taek Seung

AU - Kim, Ki Jeong

AU - Park, Jeong Young

PY - 2023/10/20

Y1 - 2023/10/20

N2 - Bimetallic alloy nanoparticles (NPs) have unique electronic and geometric properties that are regarded as the origin of bimetallic synergy. However, this issue remains controversial because the surface structure, composition, and oxidation state of bimetallic NPs are altered during the catalytic reaction. Here, we investigate the formation and impact of the Pt-CoO interface on Pt-Co bimetallic NPs using state-of-the-art operando surface techniques, such as ambient-pressure X-ray photoelectron spectroscopy and diffuse reflectance infrared Fourier-transform spectroscopy. The Pt-CoO interfacial structures formed on the surface during the CO oxidation reaction play a key role in enhancing the catalytic activity. Our research indicates that the metal oxide-metal interface in bimetallic NPs provides a clue to bimetallic synergy.

AB - Bimetallic alloy nanoparticles (NPs) have unique electronic and geometric properties that are regarded as the origin of bimetallic synergy. However, this issue remains controversial because the surface structure, composition, and oxidation state of bimetallic NPs are altered during the catalytic reaction. Here, we investigate the formation and impact of the Pt-CoO interface on Pt-Co bimetallic NPs using state-of-the-art operando surface techniques, such as ambient-pressure X-ray photoelectron spectroscopy and diffuse reflectance infrared Fourier-transform spectroscopy. The Pt-CoO interfacial structures formed on the surface during the CO oxidation reaction play a key role in enhancing the catalytic activity. Our research indicates that the metal oxide-metal interface in bimetallic NPs provides a clue to bimetallic synergy.

KW - Bimetallic nanoparticle

KW - CO oxidation

KW - bimetallic synergy

KW - metal oxide−metal interface

KW - operando spectroscopy

KW - surface restructuring

UR - http://www.scopus.com/inward/record.url?scp=85177212208&partnerID=8YFLogxK

U2 - 10.1021/acscatal.3c03133

DO - 10.1021/acscatal.3c03133

M3 - Article

AN - SCOPUS:85177212208

SN - 2155-5435

VL - 13

SP - 13777

EP - 13785

JO - ACS Catalysis

JF - ACS Catalysis

IS - 20

ER -

Bimetallic Synergy from a Reaction-Driven Metal Oxide-Metal Interface of Pt-Co Bimetallic Nanoparticles

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this