Fabrication of rGO/α-Fe2O3 electrodes: characterization and use in photoelectrocatalysis

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Autor(es): dc.contributorUniversidade Estadual de Londrina (UEL)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorLeão-Neto, Vanildo Souza-
Autor(es): dc.creatorda Silva, Aruã Clayton-
Autor(es): dc.creatorCamargo, Luan Pereira-
Autor(es): dc.creatorDa Silva Pelissari, Marcelo Rodrigues [UNESP]-
Autor(es): dc.creatorda Silva, Paulo Rogério Catarini-
Autor(es): dc.creatorParreira, Paulo Sergio-
Autor(es): dc.creatorSegatelli, Mariana Gava-
Autor(es): dc.creatorDall′Antonia, Luiz Henrique-
Data de aceite: dc.date.accessioned2022-02-22T00:27:01Z-
Data de disponibilização: dc.date.available2022-02-22T00:27:01Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10854-020-04244-3-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199311-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199311-
Descrição: dc.descriptionIn the current study, the synthesis of hematite (α-Fe2O3) at different temperatures (750 and 900 °C), and reduced graphene oxide (rGO), obtained from an adaptation to the Hummers’s method, was evaluated. These materials were characterized by X-ray diffraction, Raman spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, among others. The deposition of samples on the conductive surface of tin-doped indium oxide coated glass substrate, was performed by the Layer-by-Layer technique. The films were prepared with 1- and 4-bilayers α-Fe2O3, using a cationic polyelectrolyte diallyldimethylammonium chloride (PDDA) or rGO. It was observed that the rGO/α-Fe2O3 films presented higher photocurrent and less resistivity when compared to the PDDA/α-Fe2O3 films. The largest photocurrent was obtained with the 4-bilayers rGO/α-Fe2O3 at 900 °C film, with 2.15 µA cm−2. In addition, a kinetic study for photoelectrocatalytic decolorization of the methylene blue dye under visible light was performed. The electrode that showed the greatest photoelectroactivity was the 4-bilayers rGO/α-Fe2O3 at 900 °C film, resulting in kobs = 11.90 × 10−3 min−1 and about 78% decolorization after 120 min.-
Descrição: dc.descriptionDepartamento de Química Universidade Estadual de Londrina-
Descrição: dc.descriptionInstituto de Química Universidade de São Paulo-
Descrição: dc.descriptionColégio Técnico Industrial Faculdade de Engenharia Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionDepartamento de Física Universidade Estadual de Londrina-
Descrição: dc.descriptionColégio Técnico Industrial Faculdade de Engenharia Universidade Estadual Paulista (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationJournal of Materials Science: Materials in Electronics-
???dc.source???: dc.sourceScopus-
Título: dc.titleFabrication of rGO/α-Fe2O3 electrodes: characterization and use in photoelectrocatalysis-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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