Polysaccharide templated biomimetic growth of hierarchically porous metal-organic frameworks

Hammi, Nisrine; Hankari, Samir El; Katir, Nadia; Marcotte, Nathalie; Draoui, Khalid; Royer, Sébastien; Kadib, Abdelkrim El

doi:10.1016/j.micromeso.2020.110429

Cited by 40 publications

(33 citation statements)

References 63 publications

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“…In addition to combining the beneficial properties of organic and inorganic ingredients, they show unique properties that exceed expectations of a simple mixture of these parts 5 , 7 . Due to their specific characteristics including their record-breaking surface areas (more than 7000 m 2 /g) 8 , ultrahigh porosities 9 , low density 10 , high thermal stability 11 , and tunable pore structure 12 , MOFs have received specific attention for many applications such as gas separation and storage 13 , catalysis 14 , adsorption 15 , 16 , energy storage 17 , drug delivery 18 – 20 , chemical sensing 21 , 22 and so on 23 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanocellulose aerogels and Cu-BTC/nanocellulose aerogel composites for adsorption of organic dyes and heavy metal ions

Shaheed

Javanshir

Esmkhani

et al. 2021

Sci Rep

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MOFs compounds with open metal sites, particularly Cu-BTC, have great potential for adsorption and catalysis applications. However, the powdery morphology limits their applications. One of the almost new ways to overcome this problem is to trap them in a standing and flexible aerogel matrix to form a hierarchical porous composite. In this work, Cu-BTC/CNC (crystalline nanocellulose) and Cu-BTC/NFC (nanofibrillated cellulose) aerogel composites were synthesized using a direct mixing method by the addition of Cu-BTC powder to the liquid precursor solution followed by gelation and freeze-drying. Also, pure nanocellulose aerogels (CNC and NFC aerogels) have been synthesized from cellulose isolated from peanut shells. Scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectra, and X-ray diffraction (XRD) were utilized to evaluate the structure and morphology of the prepared materials. The adsorption ability of pure CNC aerogel and Cu-BTC/NFC aerogel composite for organic dye (Congo Red) and heavy metal ion (Mn7+) was studied and determined by the UV–Vis spectrophotometry and inductively-coupled plasma optical emission spectrometry (ICP-OES), respectively. It was concluded that Cu-BTC/NFC aerogel composite shows excellent adsorption capacity for Congo Red. The adsorption process of this composite is better described by the pseudo-second-order kinetic model and Langmuir isotherm, with a maximum monolayer adsorption capacity of 39 mg/g for Congo Red. Nevertheless, CNC aerogel shows no adsorption for Congo Red. Both CNC aerogel and Cu-BTC/NFC aerogel composite act as a monolith standing solid reducer, which means they could remove permanganate ions from water by reducing it into manganese dioxide without releasing any secondary product in the solution.

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Section: Introductionmentioning

confidence: 99%

Synthesis of nanocellulose aerogels and Cu-BTC/nanocellulose aerogel composites for adsorption of organic dyes and heavy metal ions

Shaheed

Javanshir

Esmkhani

et al. 2021

Sci Rep

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“…A feasible design could be achieved using hybrid nanomaterials with polysaccharides. Polysaccharides can serve as stabilizers for other components, such as functional nanomaterials and biological macromolecules, in constructing polysaccharide-based nanohybrids ( Zhan et al, 2019 ; Hammi et al, 2020 ). The participation of polysaccharides can also enhance the biocompatibility and biodegradability of exogenous materials, especially inorganic nanoparticles ( Fan et al, 2019 ; Alaei et al, 2020 ; Dincă et al, 2020 ; Zheng et al, 2020 ).…”

Section: Typical Ocular Polysaccharide-based Nanocarriers and Novel Dmentioning

confidence: 99%

Polysaccharide-Based Nanomaterials for Ocular Drug Delivery: A Perspective

Lin

et al. 2020

Front. Bioeng. Biotechnol.

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Ocular drug delivery is one of the most challenging issues in ophthalmology because of the complex physiological structure of the eye. Polysaccharide-based nanomaterials have been extensively investigated in recent years as ideal carriers for enhancing the bioavailability of drugs in the ocular system because of their biocompatibility and drug solubilization. From this perspective, we discuss the structural instability of polysaccharides and its impact on the synthesis process; examine the potential for developing bioactive polysaccharide-based ocular drug nanocarriers; propose four strategies for designing novel drug delivery nanomaterials; and suggest reviewing the behavior of nanomaterials in ocular tissues.

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“…Hierarchically porous metal-organic frameworks are versatile nanostructured materials that find applications in different fields, spanning from separation, adsorption, sensing and catalysis to health care and nanomedicine. It was shown novel opportunities for the use of functional carbohydrates as bio-based adsorbents and chemical scavengers [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Fractal-Percolation Structure Architectonics in Sol-Gel Synthesis

Kononova

Kononov

Мошников

et al. 2021

IJMS

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It was developed a new technique to assess micro- and mesopores with sizes below a few nanometers. The porous materials with hierarchical fractal-percolation structure were obtained with the sol-gel method. The tetraethoxysilane hydrolysis and polycondensation reactions were performed in the presence of salts as the sources of metal oxides. The porous materials were obtained under spinodal decomposition conditions during application of the polymer sol to the substrate surface and thermal treatment of the structures. The model is based on an enhanced Kepler net of the 4612 type with hexagonal cells filled with a quasi-two-dimensional projection of the Jullien fractal after the 2nd iteration. The materials obtained with the sol-gel method were studied using the atomic force microscopy, electron microscopy, thermal desorption, as well as an AutoCAD 2022 computer simulation of the percolation transition in a two-component system using the proposed multimodal model. Based on the results obtained, a new method was suggested to assess micro- and mesopores with sizes below a few nanometrs, which cannot be analyzed using the atomic force microscopy and electron microscopy.

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Polysaccharide templated biomimetic growth of hierarchically porous metal-organic frameworks

Cited by 40 publications

References 63 publications

Synthesis of nanocellulose aerogels and Cu-BTC/nanocellulose aerogel composites for adsorption of organic dyes and heavy metal ions

Synthesis of nanocellulose aerogels and Cu-BTC/nanocellulose aerogel composites for adsorption of organic dyes and heavy metal ions

Polysaccharide-Based Nanomaterials for Ocular Drug Delivery: A Perspective

Fractal-Percolation Structure Architectonics in Sol-Gel Synthesis

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