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metadata.artigo.dc.title: Performance of magnetite/layered double hydroxide composite for dye removal via adsorption, Fenton and photo-Fenton processes
metadata.artigo.dc.creator: Gonçalves, Rosembergue Gabriel Lima
Lopes, Paloma Aparecida
Resende, Júlia Alvarenga
Pinto, Frederico Garcia
Tronto, Jairo
Guerreiro, Mário César
Oliveira, Luiz Carlos Alves de
Nunes, Wallace de Castro
Leal Neto, Jonas
metadata.artigo.dc.subject: Layered double hydroxide
Fenton-like reaction
Dye removal
Hidróxidos Duplos Lamelares (HDLs)
Reação tipo Fenton
Remoção de corante
metadata.artigo.dc.publisher: Elsevier B.V. Oct-2019
metadata.artigo.dc.identifier.citation: GONÇALVES, R. G. L. et al. Performance of magnetite/layered double hydroxide composite for dye removal via adsorption, Fenton and photo-Fenton processes. Applied Clay Science, [S.I.], v. 179, Oct. 2019. Não paginado.
metadata.artigo.dc.description.abstract: In order to investigate the effect of the addition of magnetite in layered double hydroxide (LDH) from a structural and catalytic point of view, the synthesis of LDH containing cobalt and chromium (CoCr-LDH) was performed with or without Fe3O4. These materials were systematically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), N2 adsorption Isotherms, Fourier transform infrared spectroscopy (FTIR), and evaluated as adsorbents and heterogeneous catalysts in Fenton-like and photo-Fenton-like reactions. The results showed that the magnetite was prepared and incorporated to the LDH with success, forming a composite providing magnetic properties and promoting alteration in the morphology, quantity and size of the LDH pores. The evaluation of the adsorption and oxidation processes utilizing the Fe3O4/LDH composite showed to be more efficient than for pure LDH. This better performance can be explained by higher surface area and larger pores for Fe3O4/LDH which allow a more effective contact with the dye solution and more proximity of large molecules like those of Reactive Black with the sites where the OH• radicals are formed.
metadata.artigo.dc.language: en
Appears in Collections:DQI - Artigos publicados em periódicos

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