Immobilization of platinum nanoparticles on 3,4-diaminobenzoyl-functionalized multi-walled carbon nanotube and its electrocatalytic activity

  • Hyun-Jung Choi
  • Ji-Ye Kang
  • In-Yup Jeon
  • Soo-Mi Eo
  • Loon-Seng Tan
  • Jong-Beom Baek
Research Paper

DOI: 10.1007/s11051-011-0704-5

Cite this article as:
Choi, HJ., Kang, JY., Jeon, IY. et al. J Nanopart Res (2012) 14: 704. doi:10.1007/s11051-011-0704-5

Abstract

Multi-walled carbon nanotubes (MWCNTs) are functionalized at the sp2 C–H defect sites with 3,4-diaminobenzoic acid by a “direct” Friedel–Crafts acylation reaction in a mild polyphosphoric acid/phosphorous pentoxide medium. Owing to enhanced surface polarity, the resulting 3,4-diaminobenzoyl-functionalized MWCNTs (DAB-MWCNT) are highly dispersible in polar solvents, such as ethanol, N-methyl-2-pyrrolidone, and methanesulfonic acid. The absorption and emission properties of DAB-MWCNT in solution state are qualitatively shown to be sensitive to the pH in the environment. The DAB-MWCNT is used as a stable platform on which to deposit platinum nanoparticles (PNP). The PNP/DAB-MWCNT hybrid displays high electrocatalytic activity with good electrochemical stability for an oxygen reduction reaction under an alkaline condition.

Graphical Abstract

Multi-walled carbon nanotubes (MWCNTs) were functionalized with 3,4-diaminobenzoic acid to produce 3,4-diaminobenzoyl-functionalized MWCNT (DAB-MWCNT). Platinum nanoparticles (PNP) were deposited to DAB-MWCNT. The resulting PNP/DAB-MWCNT hybrid displayed high electrocatalytic activity.

Keywords

Platinum nanoparticles Multi-walled carbon nanotubes Functionalization Electrocatalytic activity 

Supplementary material

11051_2011_704_MOESM1_ESM.doc (82 kb)
Supplementary material 1 (DOC 82 kb)

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Hyun-Jung Choi
    • 1
  • Ji-Ye Kang
    • 1
  • In-Yup Jeon
    • 1
  • Soo-Mi Eo
    • 1
  • Loon-Seng Tan
    • 2
  • Jong-Beom Baek
    • 1
  1. 1.Interdisciplinary School of Green Energy/Institute of Advanced Materials and DevicesUlsan National Institute of Science and TechnologyUlsanSouth Korea
  2. 2.Nanostructured and Biological Materials Branch (AFRL/RXBN), Materials and Manufacturing DirectorateAir Force Research Laboratory, Wright-Patterson AFBDaytonUSA

Personalised recommendations