Revealing the role of catalysts in carbon nanotubes and nanofibers by scanning transmission X-Ray microscopy

Scientific Reports

Volumn 4, Issue , 2014, Pages

  Gao, Jing ^a   Zhong, Jun ^a   Bai, Lili ^a   Liu, Jinyin ^a   Zhao, Guanqi ^a   Sun, Xuhui ^a  

^a SOOCHOW UNIVERSITY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84891767306     PISSN: None     EISSN: 20452322     Source Type: Journal    
DOI: 10.1038/srep03606     Document Type: Article

References (24)

1. Lefèvre, M., Proietti, E., Jaouen, F. & Dodelet, J. Iron-based catalysts with improved oxygen reduction activity in polymer electrolyte fuel cells. Science 324, 71-74 (2009).
2. Lee, D. H., Lee, W. J., Kim, S. O. & Kim, Y. H. Theory, synthesis, and oxygen reduction catalysis of Fe-porphyrin-like carbon nanotube. Phys. Rev. Lett. 106, 175502-175505 (2011).
3. Feng, X. L., Liu, R. L. & Wu, D. Nitrogen-doped ordered mesoporous graphitic arrays with high electrocatalytic activity for oxygen reduction. Angew. Chem. Int. Edit. 49, 2565-2569 (2010).
4. Gong, K. P., Du, F., Xia, Z. H., Durstock,M. & Dai, L. M. Nitrogen-doped carbon nanotube arrays with high electrocatalytic activity for oxygen reduction. Science 323, 760-764 (2009).
5. Liu, S. Q., Xu, X. A., Jiang, S. J. & Hu, Z. Nitrogen-doped carbon nanotubes: High electrocatalytic activity toward the oxidation of hydrogen peroxide and its application for biosensing. ACS Nano 4, 4292-4298 (2010).
6. Li, Y. G. et al. An oxygen reduction electrocatalyst based on carbon nanotubegraphene complexes. Nat. Nanotechnol., 7, 394-400 (2012).
7. Burghard, M. Electronic and vibrational properties of chemically modified singlewall carbon nanotubes. Surf. Sci. Rep. 58, 1-109 (2005). (Pubitemid 41587913)
8. Felten, A. et al. Measuring point defect density in individual carbon nanotubes using polarization-dependent x-ray microscopy. ACS Nano 4, 4431-4436 (2010).
9. Schultz, B. J. et al. Imaging local electronic corrugations and doped regions in graphene. Nat. Commum. 2, 372-379 (2011).
10. Zhou, J. G., Wang, J., Liu, H., Banis, M. N., Sun, X. L. & Sham, T. K. Imaging nitrogen in individual carbon nanotubes. J. Phys. Chem. Lett. 1, 1709-1713 (2010).
11. 4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction. Nat. Mater. 10, 780-786 (2011).
12. Felten, A. et al. Individual multiwall carbon nanotubes spectroscopy by scanning transmission X-ray microscopy. Nano Lett. 7, 2435-2440 (2007). (Pubitemid 47310142)
13. Najafi, E. et al. Polarization. Dependence of the C 1s X-ray absorption spectra of individual multi-walled carbon nanotubes. Small 4, 2279-2285 (2008).
14. Zhong, J. et al. Direct observation and spectroscopy of nanoscaled carboxylated carbonaceous fragments coated on carbon nanotubes. Chem. Commun. 47, 8373-8375 (2011).
15. Li, J. et al. Carbon nanotube nanoelectrode array for ultrasensitive DNA detection. Nano Lett. 3, 597-602 (2003). (Pubitemid 37140621)
16. Sun, X. H. et al. The effect of catalysts and underlayer metals on the properties of PECVD-grown carbon nanostructures. Nanotechnology 21, 045201 (2010).
17. Kuznetsova, A. et al. Oxygen-containing functional groups on single-wall carbon nanotubes: NEXAFS and vibrational spectroscopic studies. J. Am. Chem. Soc. 123, 10699-10704 (2001). (Pubitemid 33015716)
18. Liu, X., Pichler, T., Knupfer, M., Fink, J. & Kataura, H. Electronic properties of FeCl3-intercalated single-wall carbon nanotubes. Phys. Rev. B 70, 205405-9(2004).
19. Hofmann, S. et al. In situ observations of catalyst dynamics during surface-bound carbon nanotube nucleation. Nano Lett. 7, 602-608 (2007). (Pubitemid 46516033)
20. Emmenegger, C. et al. Synthesis of carbon nanotubes over Fe catalyst on aluminium and suggested growth mechanism. Carbon 41, 539-547 (2003).
21. Yoshida, H., Takeda, S., Uchiyama, T., Kohno, H. & Homma, Y. Atomic-scale insitu Observation of carbon nanotube growth from solid state iron carbide nanoparticles. Nano Lett. 8, 2082-2086 (2008).
22. Smit de, E. et al. Nanoscale chemical imaging of a working catalyst by scanning transmission X-ray microscopy. Nature 456, 222-225 (2008).
23. Arie, T., Nishijima, H., Akita, S. & Nakayama, Y. Carbon-nanotube probe equipped magnetic force microscope. J. Vac. Sci. Technol. B 18, 104-106 (2000).
24. Regan, T. J. et al. Chemical effects at metal-oxide interfaces studied by X-rayabsorption spectroscopy. Phys. Rev. B 64, 214422-124433 (2001).