Controlled Etching of Carbon Nanotubes by Iron-Catalyzed Steam Gasification


  • W. Xia and S. Kundu thank the IMPRS of Surface and Interface Engineering in Advanced Materials (SurMat) for financial support. Supporting Information is available online from Wiley InterScience or from the authors.


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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.