Functionalized SBA-15 organosilicas as sorbents of mercury(II), cadmium(II) and copper(II)

Barczak, Mariusz; Oszust, Monika; Michalak, Katarzyna; Gdula, Karolina; Pasieczna-Patkowska, Sylwia; Zięba, Emil; Dąbrowski, A.

doi:10.1134/s1087659614010040

Cited by 9 publications

(5 citation statements)

References 29 publications

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“…[8] In particular, the surface modification of mesoporous silica materials with thiol groups has been applied to the preparation of materials for the selective removal of cations such as Hg 2+ , Cd 2+ , Pb 2+ , Cu 2+ and Cr 3+ . [9,10] Thiol groups may also act as binding sites for catalytic complexes, allowing the incorporation of many catalytic species. [11] Through oxidation of the thiol groups to sulfonic acid groups these materials may become catalysts themselves.…”

Section: Introductionmentioning

confidence: 99%

Thiol group functionalization of mesoporous SiO 2 SBA-15 using supercritical CO 2

Tenorio

Morère

Carnerero

et al. 2018

Microporous and Mesoporous Materials

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Section: Introductionmentioning

confidence: 99%

Thiol group functionalization of mesoporous SiO 2 SBA-15 using supercritical CO 2

Tenorio

Morère

Carnerero

et al. 2018

Microporous and Mesoporous Materials

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“…The surface roughness confirmed the presence of fixed metal units on the surface. AFM was found to be a useful process to study the structural topographies of the samples. − Additional comprehensive evidence was obtained by AFM observation. The AFM results confirmed that we obtained even, well-structured mesoporous films of hexagonal channels.…”

Section: Results and Discussionmentioning

confidence: 99%

Development of a Sustainable Tungsten and Iron Bimetal-Immobilized SBA-15 Composite for Enhanced Wet Catalytic Oxidation of Dye Capacity

Patel

Mayani²,

Mayani

2022

ACS Omega

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In this study, wet catalytic decomposition of Orange (II) dye was carried out with tungsten and iron bimetalincorporated mesoporous SBA-15 (W-Fe@SBA-15) under visible light. The synthesized hybrid composite material was characterized by physicochemical methods, powder X-ray diffraction (PXRD) spectroscopy, scanning electron microscopy combined with energy-dispersive X-ray (SEM−EDX) spectroscopy studies, Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), atomic force microscopy (AFM), thermogravimetric analysis (TGA), and surface property studies to understand the nature of the dye degradation process and for catalytic studies. The maximum degradation of Orange (II) dye measured by a UV−visible spectrophotometer was 99% at a contaminant volume of 2.7 × 10 −4 mol/L and a catalyst quantity of 2 g/ L in 140 min reaction time. Using gas chromatography−mass spectrometry (GC−MS), the final products were chemically identified. The mechanistic steps of the process were carried out through a series of experiments. The recyclability of the catalyst added a novel feature for such a heterogeneous catalysis that can reduce secondary pollutants in water with no leaching effect observed.

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“…The SEM microphotographs are presented in Figure 2 , and show that most of the obtained materials had a typical morphology of the SBA-15 structure. i.e., they were composed of “sausage-like” hexagonal motifs [ 38 , 43 , 44 ]. Of all the samples, only sample BA showed a completely different type of morphology: the hexagonal motifs were clearly shorter, and their mutual orientation was of a different type.…”

Section: Resultsmentioning

confidence: 99%

Mesoporous Silicas Obtained by Time-Controlled Co-Condensation: A Strategy for Tuning Structure and Sorption Properties

et al. 2023

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Mesoporous silicas synthesized by the co-condensation of two and three different silica monomers were synthesized by varying the time intervals between the addition of individual monomers, while the total time interval was kept constant. This resulted in different structural properties of the final silicas, particularly in their porosity and local ordering. One of the obtained samples exhibited an unusual isotherm with two hysteresis loops and its total pore volume was as high as 2.2 cm3/g. In addition, to be thoroughly characterized by a wide range of instrumental techniques, the obtained materials were also employed as the adsorbents and release platforms of a diclofenac sodium (DICL; used here as a model drug). In the case of DICL adsorption and release, differences between the samples were also revealed, which confirms the fact that time control of a monomer addition can be successfully used to fine-tune the properties of organo-silica materials.

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Functionalized SBA-15 organosilicas as sorbents of mercury(II), cadmium(II) and copper(II)

Cited by 9 publications

References 29 publications

Thiol group functionalization of mesoporous SiO 2 SBA-15 using supercritical CO 2

Thiol group functionalization of mesoporous SiO 2 SBA-15 using supercritical CO 2

Development of a Sustainable Tungsten and Iron Bimetal-Immobilized SBA-15 Composite for Enhanced Wet Catalytic Oxidation of Dye Capacity

Mesoporous Silicas Obtained by Time-Controlled Co-Condensation: A Strategy for Tuning Structure and Sorption Properties

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