TY - JOUR
T1 - Grooves of bundled single-walled carbon nanotubes dramatically enhance the activity of the oxygen reduction reaction
AU - Fujigaya, Tsuyohiko
AU - Morita, Junichi
AU - Nakashima, Naotoshi
N1 - Publisher Copyright:
© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2014/11
Y1 - 2014/11
N2 - Nitrogen-doped graphitic structures (N-GSs) are promising and cheap catalyst candidates for the oxygen reduction reaction (ORR). In this paper, we describe, first, the synthesis of singlewalled carbon nanotubes (SWNTs) coated by a N-GS (SWNT/NGS) and, second, the dramatic enhancement in the activity of the ORR by using this catalyst relative to that observed for the analogue composite composed of multiwalled carbon nanotubes (MWNTs) coated by a N-GS (i.e., MWNT/N-GS). Scanning electron microscopy and gas-adsorption experiments revealed that the SWNT/N-GS formed a bundled structure and that superior gas adsorption behavior originated from this groove structure. It is assumed that the grooves of the bundled SWNT/N-GS dramatically enhance the activity of the ORR owing to superior O2 adsorption on the grooves.
AB - Nitrogen-doped graphitic structures (N-GSs) are promising and cheap catalyst candidates for the oxygen reduction reaction (ORR). In this paper, we describe, first, the synthesis of singlewalled carbon nanotubes (SWNTs) coated by a N-GS (SWNT/NGS) and, second, the dramatic enhancement in the activity of the ORR by using this catalyst relative to that observed for the analogue composite composed of multiwalled carbon nanotubes (MWNTs) coated by a N-GS (i.e., MWNT/N-GS). Scanning electron microscopy and gas-adsorption experiments revealed that the SWNT/N-GS formed a bundled structure and that superior gas adsorption behavior originated from this groove structure. It is assumed that the grooves of the bundled SWNT/N-GS dramatically enhance the activity of the ORR owing to superior O2 adsorption on the grooves.
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U2 - 10.1002/cctc.201402565
DO - 10.1002/cctc.201402565
M3 - Article
AN - SCOPUS:84915796833
VL - 6
SP - 3169
EP - 3173
JO - ChemCatChem
JF - ChemCatChem
SN - 1867-3880
IS - 11
ER -