Synthesis of carbon nanotubes using biochar as precursor material under microwave irradiation

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dc.contributor.authorHildago-Oporto, Pamela
dc.contributor.authorNavia, R.
dc.contributor.authorHunter, R.
dc.contributor.authorCoronado, G.
dc.contributor.authorGonzález Quijon, María
dc.date2019
dc.date.accessioned2021-04-30T17:07:21Z
dc.date.available2021-04-30T17:07:21Z
dc.description.abstractBiochar is a carbon-rich porous material obtained by the thermochemical treatment of biomass. Biochar presents a suitable composition as precursor material for carbon nanotubes (CNTs) growth, and can be used as a sustainable alternative in the valorization of biomass. In this study, the synthesis of CNTs using biochar as biological precursor material is presented. CNTs were synthesized using a mixture of biochar and ferrocene including microwave assisted heating. Biochar samples used in the synthesis of CNTs were obtained from agroindustrial waste such as wheat straw, oat hulls, rapeseed cake and hazelnut hulls pyrolyzed at 400 degrees C and 600 degrees C. Synthesized CNTs were examined by dynamic light scattering, UV-VIS spectroscopy, Raman spectroscopy and transmission electron microscopy. The results indicate that the physicochemical properties of CNTs were influenced by pyrolysis temperature of biomass. Biochars obtained at 600 degrees C produced higher CNTs concentration and smaller hydrodynamic diameter. Moreover, CNTs synthesized from biochar of hazelnut hulls and wheat straw show a higher degree of wall graphitization, suggesting superior CNT quality. The results of this study show the feasible production of CNTs using biochar as precursor material.
dc.identifier.citationJOURNAL OF ENVIRONMENTAL MANAGEMENT,Vol.244,83-91,2019
dc.identifier.doi10.1016/j.jenvman.2019.03.082
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/4127
dc.language.isoen
dc.publisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
dc.sourceJOURNAL OF ENVIRONMENTAL MANAGEMENT
dc.subject.englishAgroindustrial wastes
dc.subject.englishLignocellulosic biomass
dc.subject.englishPyrolysis
dc.subject.englishMicrowave assisted heating
dc.titleSynthesis of carbon nanotubes using biochar as precursor material under microwave irradiation
dc.typeArticle
uct.catalogadorWOS
uct.indizacionSCI
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