Tuning chirality of single-wall carbon nanotubes by selective etching with carbon dioxide

Kwanyong Seo; Changwook Kim; Yong Soo Choi; Kyung Ah Park; Young Hee Lee; Bongsoo Kim

doi:10.1021/ja035262q

Tuning chirality of single-wall carbon nanotubes by selective etching with carbon dioxide

J Am Chem Soc. 2003 Nov 19;125(46):13946-7. doi: 10.1021/ja035262q.

Authors

Kwanyong Seo¹, Changwook Kim, Yong Soo Choi, Kyung Ah Park, Young Hee Lee, Bongsoo Kim

Affiliation

¹ Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.

PMID: 14611216
DOI: 10.1021/ja035262q

Abstract

CO2 molecule chemisorbs selectively on the zigzag tube edge without an activation barrier, whereas it physisorbs on the armchair edge of nanotubes. In addition, carbon nanotubes can be etched by an adsorbed oxygen atom of CO2 molecule. From our results, we suggest a selective etching mechanism for tuning the chirality of the mass-produced carbon nanotubes.