Grooves of Bundled Single-Walled Carbon Nanotubes Dramatically Enhance the Activity of the Oxygen Reduction Reaction

被引：10

作者：

Fujigaya, Tsuyohiko ^{[1
,2
]}

Morita, Junichi ^{[1
]}

Nakashima, Naotoshi ^{[1
,2
,3
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 819039, Japan

[2] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka 8190395, Japan

[3] Japan Sci & Technol Agcy JST, CREST, Chiyoda Ku, Tokyo 1020075, Japan

来源：

CHEMCATCHEM | 2014年 / 6卷 / 11期

基金：

日本科学技术振兴机构;

关键词：

bundles; N ligands; nanotubes; oxygen; reduction; FUEL-CELL ELECTROCATALYST; SURFACE-AREA; POLYBENZIMIDAZOLE; ADSORPTION; CATALYSTS; NANOPARTICLES; SIMULATION; DESIGN; IRON; NH3;

D O I：

10.1002/cctc.201402565

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 single-walled carbon nanotubes (SWNTs) coated by a N-GS (SWNT/N-GS) 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 O-2 adsorption on the grooves.

引用

页码：3169 / 3173

页数：5

共 34 条

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