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2 article(s) from Akkari, Marwa

Photoactive nanoarchitectures based on clays incorporating TiO₂ and ZnO nanoparticles

Eduardo Ruiz-Hitzky,
Pilar Aranda,
Marwa Akkari,
Nithima Khaorapapong and
Makoto Ogawa

Beilstein J. Nanotechnol. 2019, 10, 1140–1156, doi:10.3762/bjnano.10.114

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Figure 1: Schematic representation of the crystal structures of the following clay minerals: kaolinite (A), m...

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Figure 2: TEM images of (A) ZnO NPs on montmorillonite with nanocrystal aggregation; reprinted with permissio...

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Figure 3: Synthesis of clay–semiconductor nanoarchitectures by the “organoclay colloidal route” involving eit...

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Figure 4: ZnO-Fe₃O₄@sepiolite nanoarchitecture prepared in two steps: First, the fiber clay is modified by as...

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Figure 5: (A) TEM image of the Pt–TiO₂@sepiolite clay nanoarchitectures prepared by a photodeposition procedu...

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Figure 6: The structural arrangement of the [Ru(bpy)₃]²⁺–TiO₂@clay nanoarchitecture and its photocatalytic ac...

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Review

Published 31 May 2019

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Organoclay hybrid materials as precursors of porous ZnO/silica-clay heterostructures for photocatalytic applications

Marwa Akkari,
Pilar Aranda,
Abdessalem Ben Haj Amara and
Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2016, 7, 1971–1982, doi:10.3762/bjnano.7.188

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Figure 1: Scheme of the synthetic approach employed in the preparation of the ZnO/SiO₂-clay heterostructures ...

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Figure 2: XRD patterns for Cloisite^® (A) and TSM (B) corresponding to: (a) the starting clay, (b) CTA⁺-exchan...

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Figure 3: FE-SEM images of the heterostructures: (A) SiO₂-CLO-CTA, (B) ZnO/SiO₂-CLO, (C) SiO₂-TSM-CTA and (D)...

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Figure 4: TEM images of the heterostructures: (A) ZnO/SiO₂-CLO and (B) ZnO/SiO₂-TSM, in both images the arrow...

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Figure 5: N₂ adsorption–desorption isotherms (77 K) of SiO₂-clay (a) and ZnO/SiO₂-clay (b) heterostructures b...

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Figure 6: XRD patterns of (a) starting sepiolite (SEP), (b) SEP-CTA organoclay, and (c) SiO₂/SEP-CTA, (d) ZnO...

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Figure 7: FE-SEM images of SiO₂-SEP-CTA (A) and ZnO/SiO₂-SEP (B) heterostructures, and TEM image of ZnO/SiO₂-...

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Figure 8: FTIR spectra (3750–3650 cm⁻¹ region) of (a) pristine sepiolite (SEP), (b) SEP-CTA, and the (c) SiO₂...

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Figure 9: ²⁹Si solid-state NMR spectra of (a) sepiolite and (b) ZnO/SiO₂-SEP heterostructure.

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Figure 10: N₂ adsorption–desorption isotherms at 77 K for SiO₂-SEP (a) and ZnO/SiO₂-SEP (b) heterostructures.

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Figure 11: C/C_o (C₀ = 3·10⁻⁵ M) of MB as a function of the UV irradiation time in presence of the heterostruct...

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Figure 12: Photoactivity of ZnO NP and ZnO-SiO₂-clay heterostructures showing degradation of ibuprofen in aque...

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Full Research Paper

Published 12 Dec 2016

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Photoactive nanoarchitectures based on clays incorporating TiO2 and ZnO nanoparticles

Organoclay hybrid materials as precursors of porous ZnO/silica-clay heterostructures for photocatalytic applications

Photoactive nanoarchitectures based on clays incorporating TiO₂ and ZnO nanoparticles