Selected Kraft lignin fractions as precursor for carbon foam: Structure-performance correlation and electrochemical applications

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorVTT Technical Research Centre of Finland Ltd-
Autor(es): dc.contributorAalto University-
Autor(es): dc.creatorRodrigues, Jéssica S.-
Autor(es): dc.creatorde Freitas, Amanda De S.M.-
Autor(es): dc.creatorMaciel, Cristiane C.-
Autor(es): dc.creatorGuizani, Chamseddine-
Autor(es): dc.creatorRigo, Davide-
Autor(es): dc.creatorFerreira, Marystela-
Autor(es): dc.creatorHummel, Michael-
Autor(es): dc.creatorBalakshin, Mikhail-
Autor(es): dc.creatorBotaro, Vagner R.-
Data de aceite: dc.date.accessioned2025-08-21T22:36:02Z-
Data de disponibilização: dc.date.available2025-08-21T22:36:02Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-06-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ijbiomac.2023.124460-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247186-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247186-
Descrição: dc.descriptionThe rapid exhaustion of fossil fuels brings to the fore the need to search for energy efficient strategies. The conversion of lignin into advanced functional carbon-based materials is considered one of the most promising solutions for environmental protection and the use of renewable resources. This study analyzed the structure-performance correlation of carbon foams (CF) when lignin-phenol-formaldehyde (LPF) resins produced with different fractions of kraft lignin (KL) were employed as carbon source, and polyurethane foam (PU) as sacrificial mold. The lignin fractions employed were KL, fraction of KL insoluble in ethyl acetate (LFIns) and fraction of KL soluble in ethyl acetate (LFSol). The produced CFs were characterized by thermogravimetric analysis (TGA), X-ray diffractometry (XRD), Raman spectroscopy, 2D HSQC Nuclear magnetic resonance (NMR) analysis, scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), and electrochemical measurements. The results showed that when LFSol was employed as a partial substitute for phenol in LPF resin synthesis, the final performance of the produced CF was infinitely higher. The improved solubility parameters of LFSol along with the higher S/G ratio and β-O-4/α-OH content after fractionation were the key to produce CF with better carbon yields (54 %). The electrochemical measurements showed that LFSol presented the highest current density (2.11 × 10−4 mA.cm−2) and the lowest value of resistance to charge transfer (0.26 KΩ) in relation to the other samples, indicating that the process of electron transfer was faster in the sensor produced with LFSol. LFSol's potential for application as an electrochemical sensor was tested as a proof of concept and demonstrated excellent selectivity for the detection of hydroquinone in water.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionScience and Technology Center for Sustainability (CCTS) Federal University of São Carlos (UFSCar), João Leme dos Santos, km 110-
Descrição: dc.descriptionInstitute of Science and Technology (ICT) Federal University of São Paulo (UNIFESP), SP-
Descrição: dc.descriptionScience and Technology Institute of Sorocaba (ICTS) São Paulo State University (UNESP), Av. Três de Março, 511-
Descrição: dc.descriptionBiorefining Chemistry Team VTT Technical Research Centre of Finland Ltd, Tietotie 2, P.O. Box 1000-
Descrição: dc.descriptionAalto University, Department of Bioproducts and Biosystems, Vuorimiehentie 1-
Descrição: dc.descriptionScience and Technology Institute of Sorocaba (ICTS) São Paulo State University (UNESP), Av. Três de Março, 511-
Descrição: dc.descriptionCAPES: 1823185-
Descrição: dc.descriptionCAPES: 88881.622738/2021-01-
Descrição: dc.descriptionCAPES: 88882.427090/2019-01-
Descrição: dc.descriptionCAPES: 88887.497915/2020-00-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Biological Macromolecules-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCarbon foams-
Palavras-chave: dc.subjectKraft lignin-
Palavras-chave: dc.subjectLignin fractions-
Palavras-chave: dc.subjectThermal decomposition. Electrochemical applications-
Título: dc.titleSelected Kraft lignin fractions as precursor for carbon foam: Structure-performance correlation and electrochemical applications-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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