The production of carbon nanotubes (CNTs) by electric arc discharge (EA) usually applies pure mineral graphite (PMG) as the precursor electrode due to its high-purity and conductivity. This work investigated the versatility of EA in aqueous medium for the production of CNTs by varying the electrodes purity degree. In this way, a variety of domestic and industrial graphite waste can be recycled into high-quality CNTs by adjusting the EA parameters. CNTs were synthesized using 6B pencil (6BP, ~57% graphite) and their quality and quantity were compared to the PMG (99.995%) production. PMG led to short CNTs (ID/IG 0.266), while the synthesis with 6BP led to long CNTs (ID/IG 0.428). The 6BP CNTs showed elevated quality for application in the electronic, biomedical, and optical fields.
Ecofriendly synthesis of MWCNTs by electric arc in aqueous medium: Comparative study of 6B pencil and mineral graphite / Kaufmann, Claudir Gabriel; Zampiva, Rúbia Young Sun; Arcaro, Sabrina; Wermuth, Tiago Bender; Anzanello, Michel J.; Acauan, Luiz Henrique; Alves, Annelise Kopp; Bergmann, Carlos Pérez; Mortari, Sergio Roberto. - In: INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY. - ISSN 1546-542X. - (2020). [10.1111/ijac.13565]
Ecofriendly synthesis of MWCNTs by electric arc in aqueous medium: Comparative study of 6B pencil and mineral graphite
Zampiva, Rúbia Young SunCo-primo
;
2020
Abstract
The production of carbon nanotubes (CNTs) by electric arc discharge (EA) usually applies pure mineral graphite (PMG) as the precursor electrode due to its high-purity and conductivity. This work investigated the versatility of EA in aqueous medium for the production of CNTs by varying the electrodes purity degree. In this way, a variety of domestic and industrial graphite waste can be recycled into high-quality CNTs by adjusting the EA parameters. CNTs were synthesized using 6B pencil (6BP, ~57% graphite) and their quality and quantity were compared to the PMG (99.995%) production. PMG led to short CNTs (ID/IG 0.266), while the synthesis with 6BP led to long CNTs (ID/IG 0.428). The 6BP CNTs showed elevated quality for application in the electronic, biomedical, and optical fields.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
