Abstract
Nitrogen-doped carbon nanotubes (NCNTs) as noble-metal free catalysts were synthesised via chemical vapour deposition using iron (II) phthalocyanine as a metal catalyst for growth of the nanotubes. The synthesis process was performed in one step in a tube furnace using different chemical precursors (aniline, diethylamine and ethylenediamine) as nitrogen sources. The NCNT samples were physically characterised using scanning electron microscopy, transmission electronic microscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry measurements were conducted to investigate the oxygen reduction reaction (ORR), and they showed that the electrocatalytic activities depend on the structural and morphological changes in the NCNTs. The results showed that NCNTs synthesised from ethylenediamine precursors exhibit an ORR scheme proceed via indirect four electron transfer process in acidic media, which implies that these NCNTs are a candidate for serving as the cathodic catalyst in PEMFCs. The highly active NCNTs possess unique characteristics, including a high concentration of surface defects with high pyridinic-N and pyridinic-N-oxides configurations that serve as active sites for ORR activity in acidic media.
| Original language | English |
|---|---|
| Pages (from-to) | 9421-9430 |
| Number of pages | 10 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 38 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 26 Jul 2013 |
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Keywords
- Nitrogen-doped carbon nanotubes
- Noble-metal free catalyst
- Oxygen reduction reaction
- PEMFC
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Cite this
Influence of nitrogen doping on carbon nanotubes towards the structure, composition and oxygen reduction reaction. / Wong, W. Y.; Wan Daud, Wan Ramli; Mohamad, Abu Bakar; Kadhum, Abdul Amir H.; Loh, Kee Shyuan; Herianto, Edy.
In: International Journal of Hydrogen Energy, Vol. 38, No. 22, 26.07.2013, p. 9421-9430.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of nitrogen doping on carbon nanotubes towards the structure, composition and oxygen reduction reaction
AU - Wong, W. Y.
AU - Wan Daud, Wan Ramli
AU - Mohamad, Abu Bakar
AU - Kadhum, Abdul Amir H.
AU - Loh, Kee Shyuan
AU - Herianto, Edy
PY - 2013/7/26
Y1 - 2013/7/26
N2 - Nitrogen-doped carbon nanotubes (NCNTs) as noble-metal free catalysts were synthesised via chemical vapour deposition using iron (II) phthalocyanine as a metal catalyst for growth of the nanotubes. The synthesis process was performed in one step in a tube furnace using different chemical precursors (aniline, diethylamine and ethylenediamine) as nitrogen sources. The NCNT samples were physically characterised using scanning electron microscopy, transmission electronic microscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry measurements were conducted to investigate the oxygen reduction reaction (ORR), and they showed that the electrocatalytic activities depend on the structural and morphological changes in the NCNTs. The results showed that NCNTs synthesised from ethylenediamine precursors exhibit an ORR scheme proceed via indirect four electron transfer process in acidic media, which implies that these NCNTs are a candidate for serving as the cathodic catalyst in PEMFCs. The highly active NCNTs possess unique characteristics, including a high concentration of surface defects with high pyridinic-N and pyridinic-N-oxides configurations that serve as active sites for ORR activity in acidic media.
AB - Nitrogen-doped carbon nanotubes (NCNTs) as noble-metal free catalysts were synthesised via chemical vapour deposition using iron (II) phthalocyanine as a metal catalyst for growth of the nanotubes. The synthesis process was performed in one step in a tube furnace using different chemical precursors (aniline, diethylamine and ethylenediamine) as nitrogen sources. The NCNT samples were physically characterised using scanning electron microscopy, transmission electronic microscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry measurements were conducted to investigate the oxygen reduction reaction (ORR), and they showed that the electrocatalytic activities depend on the structural and morphological changes in the NCNTs. The results showed that NCNTs synthesised from ethylenediamine precursors exhibit an ORR scheme proceed via indirect four electron transfer process in acidic media, which implies that these NCNTs are a candidate for serving as the cathodic catalyst in PEMFCs. The highly active NCNTs possess unique characteristics, including a high concentration of surface defects with high pyridinic-N and pyridinic-N-oxides configurations that serve as active sites for ORR activity in acidic media.
KW - Nitrogen-doped carbon nanotubes
KW - Noble-metal free catalyst
KW - Oxygen reduction reaction
KW - PEMFC
UR - http://www.scopus.com/inward/record.url?scp=84879941429&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879941429&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2013.01.189
DO - 10.1016/j.ijhydene.2013.01.189
M3 - Article
AN - SCOPUS:84879941429
VL - 38
SP - 9421
EP - 9430
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 22
ER -