Electrochemically enhanced iron oxide-modified carbon cathode toward improved heterogeneous electro-Fenton reaction for the degradation of norfloxacin

Autor(es)

Santos, Gessica de Oliveira Santiago ; Goulart, Lorena Athie ; Sanchez-Montes, Isaac ; da Silva, Ronaldo Santos ; Lanza, Marcos Roberto de Vasconcelos

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. 30, n. 56, p. 18-pg., 2023-11-02.

Resumo

In this work, different iron-based cathode materials were prepared using two different approaches: a novel one-step approach, which involved the incorporation of iron oxide with Printex (R) L6 carbon/PTFE (PL6C/PTFE) on bare carbon felt (CF) and a two-step approach, where iron oxide is deposited onto CF previously modified with PL6C/PTFE. The results obtained from the physical characterization indicated that the presence of iron oxide homogeneously dispersed on the felt fibers with the CF 3-D network kept intact in the one-step approach; whereas the formation of iron oxide aggregates between the felt fibers for material obtained using the two-step approach. Among the iron oxide-based cathodes investigated, the iron-incorporated electrode exhibited the greatest efficiency in terms of the removal and mineralization of norfloxacin (NOR) under neutral pH (complete NOR removal in less than 30 min with around 50% mineralization after 90 min). The findings of this study show that the low cost and simple-to-prepare iron-modified carbon-based materials in HEF process led to the enhanced degradation of organic contaminants in aqueous solutions. (AU)

• Processo FAPESP: 20/07351-7 - Processos oxidativos avançados baseados na ativação in situ de oxidantes via radiação UVC e solar para a eliminação simultânea de microcontaminantes e patógenos
• Beneficiário: Isaac José Sánchez Montes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/10118-0 - Estudo e aplicação da tecnologia eletroquímica para a análise e a degradação de interferentes endócrinos: materiais, sensores, processos e divulgação científica
• Beneficiário: Marcos Roberto de Vasconcelos Lanza
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 20/02743-4 - Filmes de Fe/RuO2-TiO2 suportados em feltro de carbono para degradação do norfloxacino por processo eletro-fenton heterogêneo
• Beneficiário: Géssica de Oliveira Santiago Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático