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6632287 
Journal Article 
Controlled etching of carbon nanotubes by iron-catalyzed steam gasification 
Xia, Wei; Muhler, M; Hagen, V; Kundu, S; Wang, Y; Somsen, C; Eggeler, G; Sun, G; Grundmeier, G; Stratmann, M; , 
2007 
Yes 
Advanced Materials
ISSN: 0935-9648
EISSN: 1521-4095 
WILEY-V C H VERLAG GMBH 
WEINHEIM 
3648-+ 
WOS:000250992000041 
A localized etching method based on catalytic steam gasification was developed to modify carbon nanotubes in a pre-determined manner. The etching, occurring only at the interface, created different etching patterns depending on the iron catalyst by means of an eco-friendly, low-cost process using water vapor. Both the surface roughness and the number of surface defects such as edge planes were significantly enhanced.