Repository logo
 
Publication

Polyolefin-derived carbon nanotubes as magnetic catalysts for wet peroxide oxidation of paracetamol in aqueous solutions

2023Journal article Open access
Simple item page
dc.contributor.authorDíaz de Tuesta, Jose Luis
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorRoman, Fernanda
dc.contributor.authorSanches, Lucas Fenato
dc.contributor.authorSilva, Fernando Alves
dc.contributor.authorPereira, Ana I.
dc.contributor.authorSilva, Adrián
dc.contributor.authorFaria, Joaquim
dc.contributor.authorGomes, Helder
dc.date.accessioned2018-03-26T10:05:38Z
dc.date.available2018-03-26T10:05:38Z
dc.date.issued2023
dc.description.abstractThis work deals with developing feasible valorization technologies to prepare carbon nanotubes (CNTs) from plastic solid waste and demonstrate their application in catalytic wet peroxide oxidation (CWPO). CNTs were synthesized by catalytic chemical vapor deposition (CCVD) at 850 oC, considering low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP) as carbon precursors representative of urban plastic solid waste. Iron oxide nanoparticles supported in alumina, previously synthesized by sol-gel, were used as catalysts in the CCVD process. TEM micrographs allow us to determine 41 nm as the average outer diameter of the CNTs and to visualize magnetic iron nanoparticles (ca. 10 nm) embedded inside the CNTs (ca. 6.4 % of content measured as ashes). These magnetic nanoparticles were kept in the CNT structure even after the puri-fication of the CNTs with sulphuric acid, allowing to obtain magnetic CNTs. All purified and non-purified CNTs prepared from the polyolefins were assessed as catalysts in CWPO of paracetamol (PCM), used as a model pharmaceutical contaminant in water at CPCM,0 = 100 mu g mL-1 (CH2O2,0 = 472 mu g mL-1, CCNT = 2.5 g L-1, pH0 = 3.5 and T = 80 degrees C). The concentrations of PCM, H2O2, aromatic and total phenolic compounds were monitored for 24 h. All CNTs showed catalytic activity, allowing the complete degradation of PCM at 6 h of reaction time. The stability and reusability of materials are tested and proved in CWPO.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDíaz de Tuesta, Jose Luis; Silva, Adriano S.; Roman, Fernanda; Sanches, Lucas Fenato; Silva, Fernando Alves; Pereira, Ana I.; Silva, Adrian; Faria, Joaquim; Gomes, Helder (2023). Polyolefin-derived carbon nanotubes as magnetic catalysts for wet peroxide oxidation of paracetamol in aqueous solutions. Catalysis Today. eISSN 1873-4308. 419, p. 1-10pt_PT
dc.identifier.doi10.1016/j.cattod.2023.114162
dc.identifier.eissn1873-4308
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/10198/16533
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPlastic wastept_PT
dc.subjectChemical vapor depositionpt_PT
dc.subjectPyrolysispt_PT
dc.subjectContaminants of emerging concernpt_PT
dc.subjectAdvanced oxidation process
dc.subjectFenton-like
dc.subjectParacetamol
dc.subjectCircular economy
dc.titlePolyolefin-derived carbon nanotubes as magnetic catalysts for wet peroxide oxidation of paracetamol in aqueous solutionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleCatalysis Todaypt_PT
person.familyNameDíaz de Tuesta
person.familyNameSilva
person.familyNameRoman
person.familyNamePereira
person.familyNameGomes
person.givenNameJose Luis
person.givenNameAdriano S.
person.givenNameFernanda
person.givenNameAna I.
person.givenNameHelder
person.identifier.ciencia-id7A1F-022B-7DBF
person.identifier.ciencia-id3E14-5049-B09D
person.identifier.ciencia-idEE1B-DAA7-D0BD
person.identifier.ciencia-id0716-B7C2-93E4
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0003-2408-087X
person.identifier.orcid0000-0002-6795-2335
person.identifier.orcid0000-0001-5360-5298
person.identifier.orcid0000-0003-3803-2043
person.identifier.orcid0000-0001-6898-2408
person.identifier.ridD-9785-2017
person.identifier.ridF-3168-2010
person.identifier.scopus-author-id55755821600
person.identifier.scopus-author-id15071961600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2ad0465f-5f8a-4b14-90f5-bf85996f9ce1
relation.isAuthorOfPublication3ba90ba4-aac8-4892-a30f-25a10bc27298
relation.isAuthorOfPublicationc145030b-c811-4be4-b6af-1926e364cb33
relation.isAuthorOfPublicatione9981d62-2a2b-4fef-b75e-c2a14b0e7846
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery3ba90ba4-aac8-4892-a30f-25a10bc27298

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Polyolefin-derived carbon nanotubes as magnetic catalysts.pdf
Size:
5.99 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIMO - Artigos em Revistas Indexados à WoS/Scopus