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Controlled filling and external cleaning of multi-wall carbon nanotubes using a wet chemical method |
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| Authors: | Aldo Capobianchi Sabrina Foglia Andrea Notargiacomo Tiziana Del Buono |
| Affiliation: | a Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via Salaria Km. 29,300, 0016 Monterotondo, Roma, Italy b Dipartimento di Fisica, Università di Roma TRE, Via della Vasca Navale 84, 00146 Roma, Italy c Centro Interdipartimentale di Microscopia Elettronica, Università degli Studi dell’Aquila, 67040 Monteluco di Roio - L’Aquila, Italy d Dipartimento di Ingegneria Elettrica e dell’Informazione, Università degli Studi dell’Aquila, 67040 Monteluco di Roio - L’Aquila, Italy |
| Abstract: | A controlled, material-independent and adaptable cold wet chemical procedure is described. It allows organic and inorganic compounds to be confined inside multi-wall carbon nanotubes. The procedure mainly consists of a lyophilization process to fill multi-wall carbon nanotubes (MWCNTs), and a washing method to clean their outer surface without removing the encapsulated material. The technique was tested by synthesizing CdS crystals inside the nanotubes. Morphological and structural studies of the CdS crystals demonstrated a complete control of the synthesis process, and the possibility of maximizing the crystal size and the filling efficiency that approached 70% of open-ended nanotubes. |
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