Innovative approaches in characterization of carbon nanotube

Carbon nanotubes (CNTs) are promising modern nanostructured materials with extraordinary mechanical, chemical, and good thermal stability properties as well as high aspect ratio. These features make them useful materials in various applications. However, pristine CNTs tend to form aggregates and bundles making them difficult to use. Superficial modification/treatment of CNTs with organic or inorganic materials results in improvement of nanotubes' useful properties and applicability, giving them the required magnetic, catalytic, electronic properties, etc. Therefore, characterization of CNTs is carried out to check and ascertain its features such as type, surface structure, and morphology (diameter, length), dispersion, configuration, size, etc. In this chapter, current innovative approaches widely utilized in CNTs characterization are classified and discussed with highlights on their principle as well as most of their merits and demerits.