Preparation of Fluorescent Carbon-Based Dots from Waste Tire Pyrolysis

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dc.contributor.advisorOrcidhttps://orcid.org/0000-0002-5428-768X
dc.contributor.advisorOrcidhttps://orcid.org/0000-0003-1544-5566
dc.contributor.authorPARRA, JULIANA B.
dc.contributor.authorSILVA, KARINA C.
dc.contributor.authorVALEZIN, PEDRO A. S.
dc.contributor.authorMARTINS, RAPHAEL G.
dc.contributor.authorGOMES, RODOLFO R.
dc.contributor.authorPEREIRA, RAFAEL S.
dc.contributor.authorMELO, FERNANDO M. DE
dc.contributor.authorAndreia De Araújo Morandim Giannetti
dc.contributor.authorSANTOS, RONALDO G. DOS
dc.contributor.authorPANZARINI, LUZ CONSUELO G. A.
dc.contributor.authorTOYAMA, MARCOS M.
dc.date.accessioned2022-01-07T19:37:42Z
dc.date.available2022-01-07T19:37:42Z
dc.date.issued2020-10-30
dc.description.abstractThe pyrolysis of waste tire has been proposed as an alternative route to its recycling producing residual oils that can be used as fuels. In this work, a physicochemical process to obtain carbonbased dots (CBD) from carbon black (CBL) derivatives of tires is described. For this, the CBL was treated with different acids to produce CBL1 and CBL2 particles suspension. The pH of the suspension was adjusted to 5.6 to precipitate remaining impurities. Afterwards, the supernatant was ultra-centrifuged and the yellow pale solid, the purified CBD obtained by roto evaporation, was characterized by ultraviolet-visible spectrophotometer (UV-Vis), photoluminescence (PL) at 320-380 nm, high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared microscopy (µFTIR), and X-ray photoelectron spectroscopy (XPS). This material showed the typical excitation wavelength dependent emission and a PL quantum yield of 19.29% and was constituted by a well-defined spherical shaped and single sheets of “graphene quantum dots” with undefined shape, with potential applications in optoelectronic and fluorescence imaging devices.
dc.description.firstpage2224
dc.description.issuenumber11
dc.description.lastpage2231
dc.description.volume31
dc.identifier.citationSILVA, K. C.; VALEZIN, P. A. S.; MARTINS, R. G.; GOMES, R. R.; PEREIRA, R. S. MELO, F. M. DE; ANDREIA DE A. M. G.; SANTOS, R G. DOS PANZARINI, L.C. G. A.; TOYAMA, M. M. Preparation of fluorescent carbon-based dots from waste tire pyrolysis. JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, v. 31, n. 11, p. 2224-2231, 2020.
dc.identifier.doi10.21577/0103-5053.20200072
dc.identifier.issn0103-5053
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/3525
dc.relation.ispartofJOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
dc.rightsAcesso Aberto
dc.rights.licenseCreative Commons "Este é um artigo publicado em acesso aberto sob uma licença Creative Commons (CC BY 4.0). Fonte: https://www.scielo.br/j/jbchs/a/XXN7PSMb7t5NsRPWxsqkHzf/?lang=en. Acesso em 07 jan. 2022.
dc.subjectWaste tire
dc.subjectPyrolysis
dc.subjectCarbon-based dots
dc.subjectQuantum-dots
dc.titlePreparation of Fluorescent Carbon-Based Dots from Waste Tire Pyrolysispt_BR
dc.typeArtigopt_BR
fei.scopus.citations8
fei.scopus.eid2-s2.0-85092247770
fei.scopus.updated2024-12-01
fei.source.urlhttps://www.scielo.br/j/jbchs/a/XXN7PSMb7t5NsRPWxsqkHzf/?lang=en
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