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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Trindade, T.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2023Design and photo-Fenton performance of Graphene/CuS/Fe3O4 tertiary nanocomposites for Rhodamine B degradationcitations
- 2021Graphene@Metal Sulfide/Oxide Nanocomposites as Novel Photo-Fenton-like Catalysts for 4-Nitrophenol Degradationcitations
- 2018Magnetite-Corrole Hybrid Nanoparticlescitations
- 2013Antifungal activity of transparent nanocomposite thin films of pullulan and silver against Aspergillus nigercitations
- 2012Antibacterial activity of optically transparent nanocomposite films based on chitosan or its derivatives and silver nanoparticlescitations
- 2012Electrostatic assembly of Ag nanoparticles onto nanofibrillated cellulose for antibacterial paper productscitations
- 2009Preparation of nanocomposites by reversible addition-fragmentation chain transfer polymerization from the surface of quantum dots in miniemulsion
- 2009Preparation of nanocomposites by reversible addition-fragmentation chain transfer polymerization from the surface of quantum dots in miniemulsioncitations
- 2007Polymer grafting from CdS quantum dots via AGET ATRP in miniemulsioncitations
- 2007Development of waste-based ceramic pigments
- 2007Biofunctionalized ferromagnetic CoPt3/polymer nanocompositescitations
- 2006Synthesis of SiO2-coated Bi2S3/ poly(styrene) nanocomposites by in-situ polymerizationcitations
- 2006Layer-by-layer deposition of organically capped quantum dots
- 2005Crystallization behavior of new poly(tetramethyleneterephthalamide) nanocomposites containing SiO2 fillers with distinct morphologiescitations
- 2005A green-emitting CdSe/poly(butyl acrylate) nanocompositecitations
- 2005Polymer encaopsulation of CdE (E= S, Se) quantum dots ensembles via in situ radical polymerization in miniemulsioncitations
- 2005Alumina or mullite-based pigments made from wastes or natural sub-probucts
- 2005A green-emitting CdSe/Poly(butyl acrylate) nanocompositecitations
- 2002Optical properties of the synthetic nanocomposites SiO2/CdS/ poly(styrene-co-maleic anhydride) and SiO2/CdS/ poly(styrene-co-maleimide)citations
- 2002The synthesis of SiO2@CdS nanocomposites using single-molecule precursorscitations
Places of action
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article
Design and photo-Fenton performance of Graphene/CuS/Fe3O4 tertiary nanocomposites for Rhodamine B degradation
Abstract
This study describes nanocomposites of graphene flakes (GF) combined with CuS, Fe3O4 and CuS-Fe3O4 nanoparticles prepared by wet chemical methods. The Fe3O4 and/or CuS nanoparticles were directly anchored onto GF without requiring additional chemical treatment. The composition, structure and morphology of the nanocomposites, as well as of the pristine GF and metal oxide/sulfide nanoparticles were characterised by X -ray photoelectron spectroscopy (XPS), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), powder X -ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The results confirmed the successful attachment of CuS nanophases (size range: 23.7-50.1 nm) and/or Fe3O4 nanoparticles (size range: 10.6-15.8 nm). The adsorption and photocatalytic properties of the GF-based nanocomposites were evaluated at room temperature using Rhodamine B (RhB) as a model contaminant. Theoretical models were fitted to the adsorption kinetic results using the pseudo-first-order, pseudo-second-order and Elovich equations, while the adsorption mechanism was determined using the intraparticle diffusion, Bangham and Boyd models. The RhB adsorption efficiency was 6.5% for GF@CuS-Fe3O4 after 180 min contact time, whereas for the other materials was significantly higher: 97.6%, 60.9% and 31.9% for GF, GF@CuS and GF@Fe3O4, respectively. The adsorption capacity of GF and composites fitted the pseudo-second-order kinetic and Elovich models. The influence of the nanostructures composition on the corresponding photocatalytic activity in the degradation of RhB under a 150 W halogen lamp was also evaluated. The GF@CuS-Fe3O4 nanocomposite totally eliminated the dissolved RhB after 60 min irradiation, whereas the GF@CuS, GF@Fe3O4 and pristine Fe3O4 removed 75.6%, 80.9% and 30.8%, respectively, after 180 min irradiation. It was found that the photocatalytic behaviour of the composites was best described by the first-order kinetic model. The rate constant of the photocatalytic RhB removal for GF@CuS-Fe3O4 (k = 7.05 x10-2 min-1) was 2.1, 5.1 and 15.0 times higher than those obtained for GF@CuS, GF@Fe3O4 and pristine Fe3O4, respectively, after 60 min of visible light irradiation.