Preparation of microporous pillared magadiite from silylated magadiite and their unique inclusion behaviors of organic molecules

Matsuo, Yoshiaki; Yamauchi, Yuske

doi:10.1016/j.micromeso.2012.09.032

Cited by 14 publications

(9 citation statements)

References 50 publications

(45 reference statements)

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“…On the other hand, the chemical reaction occurred in the time when MAG was modified by KH550; and KH550 was easy to hydrolysize. It then lost three ethoxy groups to form covalent bonds with the silicon hydroxyl on the surface of MAG, as reported previously [26].…”

Section: Resultssupporting

confidence: 69%

“…Therefore, Yoshiaki et al used reagent octyltrichlorosilane 3-aminopropyltriethoxysilane as the intermedium to be intercalated to magadiite when they prepared a novel pillared magadiite. In this study, they showed that intercalated magadiite had significant improvement interlayer spacing and surface area [26]. Moreover, the composite materials obtained by intercalating the guest molecules onto the inorganic layer have the chemical properties of both inorganics and guest molecules, which indicates a bright future in the adsorption field for magadiite [27]; thus, this intercalation could also render the magadiite surface more hydrophobic or hydrophilic, depending on the nature of the intercalated molecules [28].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption Analyses of Phenol from Aqueous Solutions Using Magadiite Modified with Organo-Functional Groups: Kinetic and Equilibrium Studies

Wang

et al. 2018

Materials

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Organically-modified magadiite (MAG–CTAB–KH550) was synthesized via ion-exchange method and condensation reaction in the presence of pure magadiite (MAG), cetyltrimethylammonium bromide (CTAB) and γ-aminopropyltriethoxysilane (KH550) in aqueous solution in this research. This new adsorbent material was studied using scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), and N2 adsorption/desorption isotherms process. It was found that the MAG–CTAB–KH550 has high Brunaur-Emmet-Teller (BET) specific surface area and mesoporous pore size distribution which enhanced its ability to remove phenol in aqueous solution; and, the value of pH has a relatively large impact on the adsorption behavior of the sorbent. Finally, the adsorptive behavior of the mesoporous material on phenol was followed pseudo-second-order kinetic adsorption model. In contrast, the adsorption equilibrium isotherm was better performed Langmuir isotherm model than the Freundlich isotherm model; in addition, the results also showed that the MAG–CTAB–KH550 had a better adsorption capacity and removal efficiency than MAG.

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Section: Resultssupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Adsorption Analyses of Phenol from Aqueous Solutions Using Magadiite Modified with Organo-Functional Groups: Kinetic and Equilibrium Studies

Wang

et al. 2018

Materials

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“…47 In addition to fundamental intercalation studies, intercalated layered silicates are being investigated for important applications, for example, selective adsorption of Zn 2+ from seawater 48 and highly selective adsorption of CO 2 . 49 Moreover, they are well-suited for use as precursors for the synthesis of various materials including novel layered silicates, 50,51 pillared layered silicates, 52,53 already known and new zeolites 54 and mesoporous materials. [55][56][57] Fig.…”

Section: Wilhelm Schwiegermentioning

confidence: 99%

Reactivity and applications of layered silicates and layered double hydroxides

2014

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Layered materials, such as layered sodium silicates and layered double hydroxides (LDHs), are well-known for their remarkable adsorption, intercalation and swelling properties. Their tunable interlayers offer an interesting avenue for the fabrication of pillared nanoporous materials, organic-inorganic hybrid materials and catalysts or catalyst supports. This perspective article provides a summary of the reactivity and applications of layered materials including aluminium-free layered sodium silicates (kanemite, ilerite (RUB-18 or octosilicate) and magadiite) and layered double hydroxides (LDHs). Recent developments in the use of layered sodium silicates as precursors for the preparation of various porous, functional and catalytic materials including zeolites, mesoporous materials, pillared layered silicates, organic-inorganic nanocomposites and synthesis of highly dispersed nanoparticles supported on silica are reviewed in detail. Along this perspective, we have attempted to illustrate the reactivity and transformational potential of LDHs in order to deduce the main differences and similarities between these two types of layered materials.

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“…The structure of mag is composed of one or multiple negatively charged sheets of SiO 4 tetrahedra with abundant silanol-terminated surfaces. Negative charges in the layers of mag are counterbalanced by hydrated cations (Na + or H + et al) in the interlayer spaces [19][20][21][22]. Mag has a high cation exchange capacity (CEC) that can be applied to ion exchange, whereby the sodium ions can be replaced by protons, other cations or large quaternary ammonium ions [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Formation and optical properties of metal/10-hydroxybenzo[h]quinolone complexes in the interlayer spaces of magadiite by solid–solid reactions

et al. 2018

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Intercalation and in situ formation of three fluorescent complexes, Al(III)-, Cr(III)- and Cu(II)-10-hydroxybenzo[h]quinolone (M-HBQ, M = Al, Cr and Cu), in the interlayer spaces of magadiite (mag) were studied by solid–solid reactions between metal ions exchanged mags (M-mag, M = Al, Cr and Cu) and HBQ. Results show that the basal spacings of the intercalated composites increase after the intercalation of HBQ into M-mags. The amount of HBQ in the intercalated compounds is different due to the amount of metal ions and the diversification of coordination ability of metal ions, and the order of the coordination ability of these three metal ions is Cu2+ > Cr3+ > Al3+. The amount of the metal cations in the interlayer of mag is enough for the in situ complex formation of M-HBQ complexes. The slight shift of the absorption and luminescence bands of the complexes suggests the different microstructures, including molecular packing of the complexes in the interlayer spaces of mags, resulting that the host–guest interactions are formed. These findings show that the intercalation and in situ formation of M-HBQ complexes (M = Al, Cr and Cu) in the interlayer space of mag are successfully achieved in the current work.

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Preparation of microporous pillared magadiite from silylated magadiite and their unique inclusion behaviors of organic molecules

Cited by 14 publications

References 50 publications

Adsorption Analyses of Phenol from Aqueous Solutions Using Magadiite Modified with Organo-Functional Groups: Kinetic and Equilibrium Studies

Adsorption Analyses of Phenol from Aqueous Solutions Using Magadiite Modified with Organo-Functional Groups: Kinetic and Equilibrium Studies

Reactivity and applications of layered silicates and layered double hydroxides

Formation and optical properties of metal/10-hydroxybenzo[h]quinolone complexes in the interlayer spaces of magadiite by solid–solid reactions

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