Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/123278
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dc.creatorOlívia S. G. P. Soares
dc.creatorCarmen S. D. Rodrigues
dc.creatorLuís M. Madeira
dc.creatorManuel Fernando R. Pereira
dc.date.accessioned2022-09-10T00:13:04Z-
dc.date.available2022-09-10T00:13:04Z-
dc.date.issued2019
dc.identifier.issn2073-4344
dc.identifier.othersigarra:325412
dc.identifier.urihttps://hdl.handle.net/10216/123278-
dc.description.abstractActivated carbon (AC), carbon xerogel (XG), and carbon nanotubes (CNT), with and without N-functionalities, were prepared. Catalysts were obtained after impregnation of these materials with 2 wt.% of iron. The materials were characterized in terms of N-2 adsorption at -196 degrees C, elemental analysis (EA), and the pH at the point of zero charge (pH(PZC)). The p-nitrophenol (PNP) degradation and mineralization (assessed in terms of total organic carbon-TOC-removal) were evaluated during adsorption, catalytic wet peroxidation (CWPO), and Fenton process. The textural and chemical properties of the carbon-based materials play an important role in such processes, as it was found that the support with the highest surface area -AC- presents the best performance in adsorption, whereas the materials with the highest mesopore surface area -XG or Fe/XG- lead to best removals by oxidation processes (for XG it was achieved 39.7 and 35.0% and for Fe/XG 45.4 and 41.7% for PNP and TOC, respectively). The presence of N-functionalities increases such removals. The materials were reused in consecutive cycles: the carbon-based materials were deactivated by hydrogen peroxide, while the catalysts showed high stability and no Fe leaching. For the support with superior performances -XG-, the effect of nitrogen content was also evaluated. The removals increase with the increase of the nitrogen content, the maximum removals (81% and 65% for PNP and TOC, respectively) being reached when iron supported on a carbon xerogel doped with melamine was used as catalyst.
dc.language.isoeng
dc.relationinfo:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000006/Advanced Industrial Processes and Materials for a Sustainable North Region of Portugal2020/AIProcMat@N2020
dc.relationinfo:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/UID/EQU/00511/2019 /Projeto Estratégico do LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
dc.rightsopenAccess
dc.titleHeterogeneous Fenton-Like Degradation of p-Nitrophenol over Tailored Carbon-Based Materials
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.identifier.doi10.3390/catal9030258
dc.identifier.authenticusP-00Q-BH8
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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