Highly dispersed PtPd on graphitic nanofibers and its heavy d-Π effect

Yu Xuan Xiao; Jie Ying; Ge Tian; Yong Tao; Hao Wei; Si Yu Fan; Ze Hao Sun; Wan Juan Zou; Jie Hu; Gang Gang Chang; Weihua Li; Xiao Yu Yang; Christoph Janiak

doi:10.1016/j.apcatb.2019.118080

Highly dispersed PtPd on graphitic nanofibers and its heavy d-Π effect

Yu Xuan Xiao, Jie Ying, Ge Tian, Yong Tao, Hao Wei, Si Yu Fan, Ze Hao Sun, Wan Juan Zou, Jie Hu, Gang Gang Chang, Weihua Li, Xiao Yu Yang, Christoph Janiak

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

57 Citations (Scopus)

Abstract

The strong Pt-carbon interaction is a very promising way to high-performance design of electrocatalysts. However, the heavy d-π overlap, a high strength of Pt-C bonding, in sp² bonded graphitic carbons with low level of defects is rarely reported. Herein, PtPd nanoparticles and graphitic carbon nanofibers (PtPd/CNF) have been integrated via heavy d-π overlap by an interfacial wettability approach and their formation mechanism has also been fully elucidated. The features of strong d-π overlap and high dispersion of metals offer PtPd/CNF with enhanced ORR activity (5.8 folds of specific activity than commercial Pt/C), and excellent structural stability and electrocatalytic durability. A new “heavy d-π overlap” concept, characteristics, and mechanism are proposed at an atomic-/nanoscale to clarify the generation of the predictive interaction as well as the interface charge transfer. It is believed that the study on heavy d-π overlap sheds new light on the fundamental aspects of the nature of Pt-C interaction.

Original language	English
Article number	118080
Journal	Applied Catalysis B: Environmental
Volume	259
DOIs	https://doi.org/10.1016/j.apcatb.2019.118080
Publication status	Published - 15 Dec 2019
Externally published	Yes

Keywords

Carbon nanofibers
d-π overlap
High dispersion
Oxygen reduction reaction
PtPd nanoparticles

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

More information

10.1016/j.apcatb.2019.118080

Cite this

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title = "Highly dispersed PtPd on graphitic nanofibers and its heavy d-Π effect",

abstract = "The strong Pt-carbon interaction is a very promising way to high-performance design of electrocatalysts. However, the heavy d-π overlap, a high strength of Pt-C bonding, in sp2 bonded graphitic carbons with low level of defects is rarely reported. Herein, PtPd nanoparticles and graphitic carbon nanofibers (PtPd/CNF) have been integrated via heavy d-π overlap by an interfacial wettability approach and their formation mechanism has also been fully elucidated. The features of strong d-π overlap and high dispersion of metals offer PtPd/CNF with enhanced ORR activity (5.8 folds of specific activity than commercial Pt/C), and excellent structural stability and electrocatalytic durability. A new “heavy d-π overlap” concept, characteristics, and mechanism are proposed at an atomic-/nanoscale to clarify the generation of the predictive interaction as well as the interface charge transfer. It is believed that the study on heavy d-π overlap sheds new light on the fundamental aspects of the nature of Pt-C interaction.",

keywords = "Carbon nanofibers, d-π overlap, High dispersion, Oxygen reduction reaction, PtPd nanoparticles",

author = "Xiao, {Yu Xuan} and Jie Ying and Ge Tian and Yong Tao and Hao Wei and Fan, {Si Yu} and Sun, {Ze Hao} and Zou, {Wan Juan} and Jie Hu and Chang, {Gang Gang} and Weihua Li and Yang, {Xiao Yu} and Christoph Janiak",

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doi = "10.1016/j.apcatb.2019.118080",

language = "English",

volume = "259",

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T1 - Highly dispersed PtPd on graphitic nanofibers and its heavy d-Π effect

AU - Xiao, Yu Xuan

AU - Ying, Jie

AU - Tian, Ge

AU - Tao, Yong

AU - Wei, Hao

AU - Fan, Si Yu

AU - Sun, Ze Hao

AU - Zou, Wan Juan

AU - Hu, Jie

AU - Chang, Gang Gang

AU - Li, Weihua

AU - Yang, Xiao Yu

AU - Janiak, Christoph

N1 - Funding Information: This work was supported by NSFC (51861135313<GN1>, <GN1><GN1>51472190, <GN1>51503166, <GN1>51611530672, <GN1>21711530705), ISTCP (<GN2>2015DFE52870), HPNSF (<GN3>2016CFA033, <GN3>2017CFB487),</GN3></GN3></GN2></GN1></GN1></GN1></GN1></GN1></GN1> and Jilin Province Science and Technology Development Plan 20180101208JC. Funding Information: This work was supported by NSFC (51861135313, 51472190, 51503166, 51611530672, 21711530705), ISTCP (2015DFE52870), HPNSF (2016CFA033, 2017CFB487), and J ilin Province Science and Technology Development Plan 20180101208JC. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/12/15

Y1 - 2019/12/15

N2 - The strong Pt-carbon interaction is a very promising way to high-performance design of electrocatalysts. However, the heavy d-π overlap, a high strength of Pt-C bonding, in sp2 bonded graphitic carbons with low level of defects is rarely reported. Herein, PtPd nanoparticles and graphitic carbon nanofibers (PtPd/CNF) have been integrated via heavy d-π overlap by an interfacial wettability approach and their formation mechanism has also been fully elucidated. The features of strong d-π overlap and high dispersion of metals offer PtPd/CNF with enhanced ORR activity (5.8 folds of specific activity than commercial Pt/C), and excellent structural stability and electrocatalytic durability. A new “heavy d-π overlap” concept, characteristics, and mechanism are proposed at an atomic-/nanoscale to clarify the generation of the predictive interaction as well as the interface charge transfer. It is believed that the study on heavy d-π overlap sheds new light on the fundamental aspects of the nature of Pt-C interaction.

AB - The strong Pt-carbon interaction is a very promising way to high-performance design of electrocatalysts. However, the heavy d-π overlap, a high strength of Pt-C bonding, in sp2 bonded graphitic carbons with low level of defects is rarely reported. Herein, PtPd nanoparticles and graphitic carbon nanofibers (PtPd/CNF) have been integrated via heavy d-π overlap by an interfacial wettability approach and their formation mechanism has also been fully elucidated. The features of strong d-π overlap and high dispersion of metals offer PtPd/CNF with enhanced ORR activity (5.8 folds of specific activity than commercial Pt/C), and excellent structural stability and electrocatalytic durability. A new “heavy d-π overlap” concept, characteristics, and mechanism are proposed at an atomic-/nanoscale to clarify the generation of the predictive interaction as well as the interface charge transfer. It is believed that the study on heavy d-π overlap sheds new light on the fundamental aspects of the nature of Pt-C interaction.

KW - Carbon nanofibers

KW - d-π overlap

KW - High dispersion

KW - Oxygen reduction reaction

KW - PtPd nanoparticles

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U2 - 10.1016/j.apcatb.2019.118080

DO - 10.1016/j.apcatb.2019.118080

M3 - Journal article

AN - SCOPUS:85070896906

SN - 0926-3373

VL - 259

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 118080

ER -

Highly dispersed PtPd on graphitic nanofibers and its heavy d-Π effect

Abstract

Keywords

ASJC Scopus subject areas

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