Efficient synthesis of Pt nanoparticles supported on hydrophobic graphitized carbon nanofibers for electrocatalysts using noncovalent functionalization

Hyung Suk Oh, Hansung Kim

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

As an alternative to the oxidative acid treatment, a noncovalent π-π interaction method is employed to deposit Pt electrocatalysts on highly hydrophobic carbon nanofibers (CNFs) for the application of polymer electrolyte membrane (PEM) fuel cells. Three different functionalization agents, namely benzyl mercaptan (BM), 1-aminopyrene (AP), and 1-pyrenecarboxylic acid (PCA), are used to functionalize CNFs and the effect of these groups on the electrochemical properties is examined. While the BM and AP act as a poison to Pt catalyst, the functionalization of CNF with PCA improves the distribution and loading of Pt as well as reducing the sintering of Pt particles. From the carbon corrosion test, unlike the oxidative acid treatment, the PCA treatment sustains the corrosion resistance of CNFs because it preserves the intrinsic properties of CNFs without damaging their surface structure. Therefore, the PCA treatment is a very effective way to prepare catalysts for PEM fuel cells and also extended to the fabrication of graphitized-carbon-supported catalysts of other precious metal for various applications. 1-Pyrenecarboxylic acid (PCA) is used to functionalize carbon nanofibers. Functionalization with PCA improves the distribution and loading of Pt, as well as reducing the sintering of Pt particles. Based on the carbon corrosion test, unlike oxidative acid treatment, the PCA treatment sustains the corrosion resistance of the CNFs because PCA functionalization treatment preserves the intrinsic properties of CNFs.

Original languageEnglish
Pages (from-to)3954-3960
Number of pages7
JournalAdvanced Functional Materials
Volume21
Issue number20
DOIs
Publication statusPublished - 2011 Oct 21

Fingerprint

Carbon nanofibers
electrocatalysts
Electrocatalysts
Nanoparticles
nanoparticles
acids
Acids
carbon
synthesis
Carbon
Proton exchange membrane fuel cells (PEMFC)
Sulfhydryl Compounds
corrosion tests
Corrosion resistance
Sintering
thiols
catalysts
corrosion resistance
Corrosion
fuel cells

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

@article{6109faae80634939bd8f14864b135a94,
title = "Efficient synthesis of Pt nanoparticles supported on hydrophobic graphitized carbon nanofibers for electrocatalysts using noncovalent functionalization",
abstract = "As an alternative to the oxidative acid treatment, a noncovalent π-π interaction method is employed to deposit Pt electrocatalysts on highly hydrophobic carbon nanofibers (CNFs) for the application of polymer electrolyte membrane (PEM) fuel cells. Three different functionalization agents, namely benzyl mercaptan (BM), 1-aminopyrene (AP), and 1-pyrenecarboxylic acid (PCA), are used to functionalize CNFs and the effect of these groups on the electrochemical properties is examined. While the BM and AP act as a poison to Pt catalyst, the functionalization of CNF with PCA improves the distribution and loading of Pt as well as reducing the sintering of Pt particles. From the carbon corrosion test, unlike the oxidative acid treatment, the PCA treatment sustains the corrosion resistance of CNFs because it preserves the intrinsic properties of CNFs without damaging their surface structure. Therefore, the PCA treatment is a very effective way to prepare catalysts for PEM fuel cells and also extended to the fabrication of graphitized-carbon-supported catalysts of other precious metal for various applications. 1-Pyrenecarboxylic acid (PCA) is used to functionalize carbon nanofibers. Functionalization with PCA improves the distribution and loading of Pt, as well as reducing the sintering of Pt particles. Based on the carbon corrosion test, unlike oxidative acid treatment, the PCA treatment sustains the corrosion resistance of the CNFs because PCA functionalization treatment preserves the intrinsic properties of CNFs.",
author = "Oh, {Hyung Suk} and Hansung Kim",
year = "2011",
month = "10",
day = "21",
doi = "10.1002/adfm.201101177",
language = "English",
volume = "21",
pages = "3954--3960",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag",
number = "20",

}

TY - JOUR

T1 - Efficient synthesis of Pt nanoparticles supported on hydrophobic graphitized carbon nanofibers for electrocatalysts using noncovalent functionalization

AU - Oh, Hyung Suk

AU - Kim, Hansung

PY - 2011/10/21

Y1 - 2011/10/21

N2 - As an alternative to the oxidative acid treatment, a noncovalent π-π interaction method is employed to deposit Pt electrocatalysts on highly hydrophobic carbon nanofibers (CNFs) for the application of polymer electrolyte membrane (PEM) fuel cells. Three different functionalization agents, namely benzyl mercaptan (BM), 1-aminopyrene (AP), and 1-pyrenecarboxylic acid (PCA), are used to functionalize CNFs and the effect of these groups on the electrochemical properties is examined. While the BM and AP act as a poison to Pt catalyst, the functionalization of CNF with PCA improves the distribution and loading of Pt as well as reducing the sintering of Pt particles. From the carbon corrosion test, unlike the oxidative acid treatment, the PCA treatment sustains the corrosion resistance of CNFs because it preserves the intrinsic properties of CNFs without damaging their surface structure. Therefore, the PCA treatment is a very effective way to prepare catalysts for PEM fuel cells and also extended to the fabrication of graphitized-carbon-supported catalysts of other precious metal for various applications. 1-Pyrenecarboxylic acid (PCA) is used to functionalize carbon nanofibers. Functionalization with PCA improves the distribution and loading of Pt, as well as reducing the sintering of Pt particles. Based on the carbon corrosion test, unlike oxidative acid treatment, the PCA treatment sustains the corrosion resistance of the CNFs because PCA functionalization treatment preserves the intrinsic properties of CNFs.

AB - As an alternative to the oxidative acid treatment, a noncovalent π-π interaction method is employed to deposit Pt electrocatalysts on highly hydrophobic carbon nanofibers (CNFs) for the application of polymer electrolyte membrane (PEM) fuel cells. Three different functionalization agents, namely benzyl mercaptan (BM), 1-aminopyrene (AP), and 1-pyrenecarboxylic acid (PCA), are used to functionalize CNFs and the effect of these groups on the electrochemical properties is examined. While the BM and AP act as a poison to Pt catalyst, the functionalization of CNF with PCA improves the distribution and loading of Pt as well as reducing the sintering of Pt particles. From the carbon corrosion test, unlike the oxidative acid treatment, the PCA treatment sustains the corrosion resistance of CNFs because it preserves the intrinsic properties of CNFs without damaging their surface structure. Therefore, the PCA treatment is a very effective way to prepare catalysts for PEM fuel cells and also extended to the fabrication of graphitized-carbon-supported catalysts of other precious metal for various applications. 1-Pyrenecarboxylic acid (PCA) is used to functionalize carbon nanofibers. Functionalization with PCA improves the distribution and loading of Pt, as well as reducing the sintering of Pt particles. Based on the carbon corrosion test, unlike oxidative acid treatment, the PCA treatment sustains the corrosion resistance of the CNFs because PCA functionalization treatment preserves the intrinsic properties of CNFs.

UR - http://www.scopus.com/inward/record.url?scp=80054804323&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80054804323&partnerID=8YFLogxK

U2 - 10.1002/adfm.201101177

DO - 10.1002/adfm.201101177

M3 - Article

AN - SCOPUS:80054804323

VL - 21

SP - 3954

EP - 3960

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

IS - 20

ER -