Degradation of oxamic acid using dimensionally stable anodes (DSA) based on a mixture of RuO2 and IrO2 nanoparticles

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFacultad de Química y Biología.Universidad de Santiago de Chile-
Autor(es): dc.contributorUniversidad de Santiago de Chile-
Autor(es): dc.contributorLaboratorio de síntesis y Modificación de Nanoestructuras y Materiales Bidimensionales. Centro de Investigación en Materiales Avanzados S.C. (CIMAV)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorEspinoza, L. Carolina-
Autor(es): dc.creatorSepúlveda, Pamela-
Autor(es): dc.creatorGarcía, Alejandra-
Autor(es): dc.creatorMartins de Godoi, Denis [UNESP]-
Autor(es): dc.creatorSalazar, Ricardo-
Data de aceite: dc.date.accessioned2022-02-22T00:25:29Z-
Data de disponibilização: dc.date.available2022-02-22T00:25:29Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.chemosphere.2020.126674-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198774-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198774-
Descrição: dc.descriptionDimensionally stable anodes (DSA) have been widely used to degrade organic compounds because these surfaces promote the electrogeneration of active chlorine species in the bulk of the solution, as well as in the vicinity of the anode when NaCl is used as supporting electrolyte. In this work, the nanoparticles synthesis of IrO2 and RuO2 was performed to obtain two types of DSA electrodes named Class I and II to degrade oxamic acid. For Class I and II DSA, the nanoparticles used were synthesized separately and in the same reaction medium, respectively. Electrolysis were carried out in an open cylindrical cell without division at 25 °C, DSAs were used as anodes and a stainless-steel electrode as cathode, both elements have a geometric area of 2.8 cm2 immersed in 0.05 mol L−1 of NaCl or Na2SO4 and a current density of 3 mA cm−2 was applied for 6 h. Active chlorine species generated in the absence of oxamic acid in NaCl were also detected and quantified through ion chromatography. In Na2SO4 there was no degradation of the compound, but in NaCl the oxamic acid concentration reaching 85% with Class I DSA. The same tendency is observed in mineralization, in which Class I DSA allowed reaching a CO2 transformation close to 73%. The difference in the results occurs because with Class I DSA, more hypochlorite is generated than with Class II and therefore there is a larger amount of oxidizing species in the solution that enables the degradation and mineralization of oxamic acid.-
Descrição: dc.descriptionDepartamento de Investigaciones Científicas y Tecnológicas, Universidad de Santiago de Chile-
Descrição: dc.descriptionFondo Nacional de Desarrollo Científico y Tecnológico-
Descrição: dc.descriptionLaboratorio de Electroquímica Del Medio Ambiente LEQMA. Departamento de Química de los Materiales Facultad de Química y Biología.Universidad de Santiago de Chile, USACH-
Descrição: dc.descriptionFacultad de Química and Biología CEDENNA Universidad de Santiago de Chile, USACH-
Descrição: dc.descriptionLaboratorio de síntesis y Modificación de Nanoestructuras y Materiales Bidimensionales. Centro de Investigación en Materiales Avanzados S.C. (CIMAV)-
Descrição: dc.descriptionLaboratorio de Materiais Magneticos e Coloides Departamento de Fisicoquímica São Paulo State University,UNESP-
Descrição: dc.descriptionLaboratorio de Materiais Magneticos e Coloides Departamento de Fisicoquímica São Paulo State University,UNESP-
Descrição: dc.descriptionFondo Nacional de Desarrollo Científico y Tecnológico: 1170352-
Idioma: dc.languageen-
Relação: dc.relationChemosphere-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAnodic-oxidation-
Palavras-chave: dc.subjectDegradation-
Palavras-chave: dc.subjectDimensionally stable anode-
Palavras-chave: dc.subjectOxamic acid-
Título: dc.titleDegradation of oxamic acid using dimensionally stable anodes (DSA) based on a mixture of RuO2 and IrO2 nanoparticles-
Tipo de arquivo: dc.typelivro digital-
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