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Carbon nanofibers from plastic solid waste

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dc.contributor.authorLopes, Jéssica Paula Marim
dc.contributor.authorRoman, Fernanda
dc.contributor.authorDíaz de Tuesta, Jose Luis
dc.contributor.authorLenzi, Giane G.
dc.contributor.authorFaria, Joaquim
dc.contributor.authorSilva, Adrián
dc.contributor.authorGomes, Helder
dc.date.accessioned2021-10-26T13:12:11Z
dc.date.available2021-10-26T13:12:11Z
dc.date.issued2020
dc.description.abstractProduction of plastics reached 360 million tonnes in 2018, the EU production corresponding to 62 million tonnes (i.e. 17%), from which only 9.2 million tonnes were collected for recycling. Low- and high-density polyethylene (PE) and polypropylene (PP), commonly used for packaging purposes, represent 40% of EU production [1]. In 2018, landfilling of plastic solid waste still represented 18.5% of the collected material [1], so there is still a great fraction of plastic waste being sent to landfill, representing a strong concern, as this plastic waste does not easily decompose. On the other hand, plastic polymers are mostly composed by carbon, as both PE and PP have a carbon content of 85.6% [2]. In this context, those plastics containing PE or PP represent a good source to produce carbon-based materials. In this work, low-density PE was used as precursor for the synthesis of carbon nanofibers (CNFs) by Chemical Vapour Deposition (CVD) (800 °C, 1 h, under N2 flow), with the aim to evaluate the influence of different CVD catalysts based on Fe, Ni and Al, synthesized using coprecipitation or wet impregnation methods, on the valorisation of PE-containing plastic waste. Fig 1 displays the scanning electron micrographs (SEM) of the carbonaceous materials obtained using two different catalysts. As can be observed, filamentous carbons were obtained in both cases, attributed to the growth of CNFs. The CNFs were obtained with similar yields of carbonaceous material (37.6% with Ni+Fe@Al2O3-coprecipitation and 36.2% with Ni+Fe@Al2O3-wet impregnation). Catalyst Ni+Fe@Al2O3-coprecipitation (Fig 1(a)) led to the formation of entangled CNFs, with high density and diameters in the range 12 – 28 nm, with the catalysts metals visible at the tip of the fiber (brighter spots on the SEM image). On the other hand, the catalyst Ni+Fe@Al2O3- wet impregnation (Fig 1(b)) resulted in the growth of CNFs with higher apparent diameters, which indicates that the catalyst obtained via coprecipitation is more suitable for growing carbon nanostructures.pt_PT
dc.description.sponsorshipThis work was financially supported by project “PLASTIC_TO_FUEL&MAT – Upcycling Waste Plastics into Fuel and Carbon Nanomaterials” (PTDC/EQU-EQU/31439/2017), Base Funding - UIDB/50020/2020 of the Associate Laboratory LSRE-LCM - funded by national funds through FCT/MCTES (PIDDAC), and CIMO (UIDB/00690/2020) through FEDER under Program PT2020. Fernanda F. Roman acknowledges the national funding by FCT through the individual research grant SFRH/BD/143224/2019.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLopes, Jéssica P.M.; Roman, Fernanda; Diaz de Tuesta, Jose Luis; Lenzi, Giane G.; Faria, Joaquim L.; Silva, Adrián; Gomes, Helder T. (2020). Carbon nanofibers from plastic solid waste. In Book of Abstracts Engineering Materials for Catalysis. Ljubljana: Slovenian Chemical Society. ISBN 978-961-93849-8-5pt_PT
dc.identifier.isbn978-961-93849-8-5
dc.identifier.urihttp://hdl.handle.net/10198/24107
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationUpcycling Waste Plastics into Fuel and Carbon Nanomaterials
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationMountain Research Center
dc.relationAmphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPlastic wastept_PT
dc.subjectCarbon nanofiberspt_PT
dc.subjectChemical vapour depositionpt_PT
dc.subjectValorisationpt_PT
dc.subjectPolyethylenept_PT
dc.titleCarbon nanofibers from plastic solid wastept_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleUpcycling Waste Plastics into Fuel and Carbon Nanomaterials
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleMountain Research Center
oaire.awardTitleAmphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FEQU-EQU%2F31439%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F143224%2F2019/PT
oaire.citation.titleBook of Abstracts Engineering Materials for Catalysispt_PT
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_NORTE
person.familyNameRoman
person.familyNameDíaz de Tuesta
person.familyNameGomes
person.givenNameFernanda
person.givenNameJose Luis
person.givenNameHelder
person.identifier.ciencia-idEE1B-DAA7-D0BD
person.identifier.ciencia-id7A1F-022B-7DBF
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-5360-5298
person.identifier.orcid0000-0003-2408-087X
person.identifier.orcid0000-0001-6898-2408
person.identifier.ridD-9785-2017
person.identifier.scopus-author-id55755821600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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