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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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Naidu, Ravi
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Magnetite Nanoparticles Loaded into Halloysite Nanotubes for Arsenic(V) Removal from Watercitations
- 2019Biocompatible functionalisation of nanoclays for improved environmental remediationcitations
- 2018Effect of surface-tailored biocompatible organoclay on the bioavailability and mineralization of polycyclic aromatic hydrocarbons in long-term contaminated soilcitations
- 2017Removal of lead from aqueous solution using superparamagnetic palygorskite nanocompositecitations
- 2017Modified osmium tracer technique enables precise microscopic delineation of hydrocarbon-degrading bacteria in clay aggregatescitations
- 2016Structural, electrokinetic and surface properties of activated palygorskite for environmental applicationcitations
- 2016Surface tailored organobentonite enhances bacterial proliferation and phenanthrene biodegradation under cadmium co-contaminationcitations
- 2015Biomass derived palygorskite-carbon nanocompositescitations
Places of action
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article
Biomass derived palygorskite-carbon nanocomposites
Abstract
<p>Clay minerals can act as a uniform dispersion medium for nano-sized carbon particles. However, literature on the preparation and characteristics of palygorskite-carbon nanocomposites is scant. Using a hydrothermal carbonisation technique this study developed two nanocomposites on fibrous palygorskite from starch: the first without a post-synthesis treatment (Composite 1); and the second with an activation at 550°C for 3h (ramp at 10°Cmin<sup>-1</sup>) under CO<sub>2</sub> environment (200mLmin<sup>-1</sup>) (Composite 2). A uniform dispersion of nano-scale carbon spheres was formed on partially destroyed palygorskite structures. Composite 2, which indicated the formation of graphitised carbon nanoparticles, generated a 17-fold greater specific surface area than Composite 1 and also created micro- and mesopores in its structure. The nanocomposites, especially in Composite 1, contained organic surface functional groups (CH, CC, CO) and indicated variable affinity to cationic and anionic dye compounds. While Composite 2 adsorbed a larger amount of anionic orange II dye (23mgg<sup>-1</sup>), Composite 1 adsorbed more cationic methylene blue (46.3mgg<sup>-1</sup>). Isothermal and kinetic modelling of the adsorption data indicated that in addition to electrostatic attraction for methylene blue adsorption on both nanocomposites, a pore diffusion mechanism was involved and the boundary resistance was greater for orange II than methylene blue adsorption. Being a material developed from green biomass (starch) and an abundant natural resource (palygorskite), these nanocomposites have immense potential for application in environmental remediation including in situ immobilisation of contaminants in soil.</p>