Carbon Nanotubes

Volume 111 of the series Topics in Applied Physics pp 531-566

Doped Carbon Nanotubes: Synthesis, Characterization and Applications

  • Mauricio TerronesAffiliated withAdvanced MaterialsDepartment, IPICYT Email author 
  • , Antonio G. Souza FilhoAffiliated withDepartamento de Fisica, Universidade Federal do Ceara
  • , Apparao M. RaoAffiliated withDepartment of Physicsand Astronomy, Clemson University

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Various applications of carbon nanotubes require their chemical modification inorder to tune/control their physicochemical properties. One way for achieving thiscontrol is by carrying out doping processes through which atoms and moleculesinteract (covalently or noncovalently) with the nanotube surfaces. The aim of thischapter is to emphasize the importance of different types of doping in carbonnanotubes (single-, double- and multiwall). There are three main categories ofdoping: exohedral, endohedral and inplane doping. We will review the most efficientways to dope carbon nanotubes and discuss the effects on the electronic, vibrational,chemical, magnetic and mechanical properties. In addition, we will discuss thedifferent ways of characterizing these doped nanotubes using spectroscopictechniques, such as resonant Raman, X-ray photoelectron, electron energy lossspectroscopy and others. It will be demonstrated that doped carbon nanotubes couldbe used in the fabrication of nanodevices (e.g., sensors, protein immobilizers,field emission sources, efficient composite fillers, etc.). We will also presentresults related to the importance of inplane-doped nanotubes for attachingvarious metal clusters and polymers covalently using wet chemical routes.