Investigation of a novel fluorinated surfactant-based system for the design of spherical wormhole-like mesoporous silica

Riachy, Philippe; Lopez, Gérald; Emo, Mélanie; Stébé, Marie‐José; Blin, Jean-Luc; Améduri, Bruno

doi:10.1016/j.jcis.2016.10.053

Cited by 14 publications

(9 citation statements)

References 47 publications

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“…PFAA are thus expected to display interesting interfacial behavior and the ability to self-assemble, either in pure form or in solvents selective to one of the segments. Indeed, PFAA are known to form a diversity of supramolecular nanostructures such as micelles, reverse micelles (1), smectic (layered) liquid crystalline phases (2)(3)(4)(5), mesophases, etc., all of which are potential candidates for numerous applications, from medicine (6)(7)(8)(9)(10)(11)(12) to smart materials and tailored interfaces (13)(14)(15)(16)(17). Organization in the solid state in layered structures has also been described (18)(19)(20)(21).…”

mentioning

confidence: 99%

Spontaneous self-assembly and structure of perfluoroalkylalkane surfactant hemimicelles by molecular dynamics simulations

Silva

Morgado

Lourenço

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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Fully atomistic molecular-dynamics (MD) simulations of perfluoroalkylalkane molecules at the surface of water show the spontaneous formation of aggregates whose size and topography closely resemble the experimentally observed hemimicelles for this system. Furthermore, the grazing incidence X-ray diffraction (GIXD) pattern calculated from the simulation trajectories reproduces the experimental GIXD spectra previously obtained, fully validating the MD simulation results. The detailed analysis of the internal structure of the aggregates obtained by the MD simulations supports a definite rational explanation for the spontaneous formation, stability, size, and shape of perfluoroalkylalkane hemimicelles at the surface of water.

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mentioning

confidence: 99%

Spontaneous self-assembly and structure of perfluoroalkylalkane surfactant hemimicelles by molecular dynamics simulations

Silva

Morgado

Lourenço

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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“…The adsorption capacities of all samples below a relative pressure (P/P0) of 0.1 symbolize typical microporous characteristics. Meanwhile, the hysteresis loop at a relative pressure (P/P0) of 0.4 to 0.95 is associated with capillary condensation occurring in the mesopores (Riachy et al 2017). All of the as-prepared carbon materials showed a type-IV adsorption isotherm, indicating typical micropores and mesopores structures.…”

Section: Characteristics Of Cls-c Al-c and Sls-cmentioning

confidence: 99%

Use of lignin-based carbons for decolorization of wastewater dyes

Shao

Zhang

et al. 2019

BioRes

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Hierarchical porous carbons were prepared from several common lignins, including sodium lignosulfonate (SLS), alkali lignin (AL), and calcium lignosulfonate (CLS) via one-step carbonization at 800 °C for 10 h without oxygen or any additional templating/activation agent for the decolorization of dyes from wastewater. The obtained carbons showed high porosity and microporous-mesoporous-macroporous hierarchical porous structures. The specific surface areas of SLS-C, AL-C, and CLS-C were 346 m2/g, 405 m2/g, and 512 m2/g, respectively. The total pore volumes of SLS-C, AL-C, and CLS-C were 0.12 cm3/g, 0.21 cm3/g, and 0.28 cm3/g, respectively. The obtained carbon materials displayed excellent adsorption-decolorization abilities for 5 dyes, including ethyl violet, malachite green, cationic brilliant red, acid blue 92, and direct red 23. The concentrations of these 5 dyes in wastewater were reduced by SLS-C from 20 mg/L to 0.12 mg/L, 0.20 mg/L, 0.32 mg/L, 0.78 mg/L, and 3.77 mg/L, respectively, over a 60 min treatment. AL-C reduced these concentrations from 20 mg/L to 0.02 mg/L, 0.01 mg/L, 0.04 mg/L, 0.71 mg/L, and 1.72 mg/L over the same time period. In addition, the concentrations of these respective dyes were reduced by CLS-C from 20 mg/L to 0.01 mg/L, 0.01 mg/L, 0.02 mg/L, 0.30 mg/L, and 0.20 mg/L.

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“…First, FSC surfactant was prepared by a radical addition of the fluorinated mercaptan 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octanethiol) onto 2-trifluoromethacrylic acid [27] (Scheme 1).…”

Section: Synthesis Of Fscmentioning

confidence: 99%

“…1), a novel fluorotelomer surfactant, in two different conditions: ⅰ ) in hot water (70-90 °C) with peroxodisulfate and ⅱ ) in superheated water (200-350 °C) with KMnO 4 . FSC is an alternative surfactant to PFOS and PFOA and is successfully used for preparing spherical wormhole-like mesoporous silica for applications in the field of catalysts [27].…”

mentioning

confidence: 99%

Efficient mineralization of a novel fluorotelomer surfactant, 2H,3H,3H,5H,5H,6H,6H-4-thia-perfluoro(2-methyl)-1-dodecanoic acid, in superheated water induced by a combination of potassium permanganate and dioxygen

Hori

Ushio

Asai

et al. 2021

Chemical Engineering Journal

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Investigation of a novel fluorinated surfactant-based system for the design of spherical wormhole-like mesoporous silica

Cited by 14 publications

References 47 publications

Spontaneous self-assembly and structure of perfluoroalkylalkane surfactant hemimicelles by molecular dynamics simulations

Spontaneous self-assembly and structure of perfluoroalkylalkane surfactant hemimicelles by molecular dynamics simulations

Use of lignin-based carbons for decolorization of wastewater dyes

Efficient mineralization of a novel fluorotelomer surfactant, 2H,3H,3H,5H,5H,6H,6H-4-thia-perfluoro(2-methyl)-1-dodecanoic acid, in superheated water induced by a combination of potassium permanganate and dioxygen

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