Influence of the sorbate type on the XRD peak intensities of loaded MCM-41

Marler, Β.; Oberhagemann, U.; Vortmann, S.; Gies, Hermann

doi:10.1016/0927-6513(96)00016-8

Cited by 368 publications

(228 citation statements)

References 2 publications

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“…3b). This may be due to the difference of scattering contrast between the amorphous silicate framework and organic moieties which are located inside the channels of MCM-41 [32,43]. N-methylglucamine functionalization (NMG-MCM-41(3)) caused the disappearance of low intensity peaks, while there appears only a slight change in the intensity of (1 0 0) reflection as compared with that of propyl bromide-grafted MCM-41 (Fig.…”

Section: Characterization Of the Synthesized Sorbentmentioning

confidence: 95%

Synthesis, characterization and application of a novel sorbent, glucamine-modified MCM-41, for the removal/preconcentration of boron from waters

Kaftan

Açıkel

Eroğlu

et al. 2005

Analytica Chimica Acta

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A novel sorbent was prepared by the functionalization of an inorganic support material, MCM-41, with N-methylglucamine for the uptake of boron from aqueous solutions prior to its determination by inductively coupled plasma optical emission spectrometry (ICP-OES). Characterization of the newly synthesized material was performed using BET, XRD, TEM, SEM and DRIFTS techniques, in addition to its C and N elemental content. Sorption behavior of the novel sorbent for boron was also investigated and found to obey Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The maximum amount of B (as H 3 BO 3 ) that can be sorbed by the sorbent was calculated from the D-R isotherm and was found to be 0.8 mmol B g −1 of sorbent. The applicability of the new sorbent for the removal/preconcentration of boron from aqueous samples was examined by batch method. It was found that the sorbent can take up 85% of boron in 5 min whereas quantitative sorption is obtained in 30 min. Any pH greater than 6 can be used for sorption. Desorption from the sorbent was carried out using 1.0 M HNO 3 . The sorption efficiency of the new sorbent was also compared to that of Amberlite IRA 743, a commercial resin with N-methylglucamine functional groups. Within the experimental conditions employed, the new sorbent was found to have higher sorption efficiency than the commercial resin. For method validation, spike recovery tests were performed at various concentration levels in different water types and were found to be between 83-95 and 75-92% for ultra pure water and geothermal water, respectively.

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Section: Characterization Of the Synthesized Sorbentmentioning

confidence: 95%

Synthesis, characterization and application of a novel sorbent, glucamine-modified MCM-41, for the removal/preconcentration of boron from waters

Kaftan

Açıkel

Eroğlu

et al. 2005

Analytica Chimica Acta

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“…The presence of a single broad diffraction peak of the parent material alone (dashed-line peak) is typical of ordered mesoporous silica due to the amorphous nature of the walls, while the decrease in intensity (solid-line peak) was claimed to be indicative of the presence of a guest molecule inside the pores. 694 Clearer evidences of this is provided by the fluorescence confocal scanning laser microscopy images (see Figure 87b), which also indicated DNA penetration of the bulk of the micrometric particles.…”

Section: Interaction With Nucleic Acid-related Biomoleculesmentioning

confidence: 99%

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

et al. 2013

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“…It can also be seen here that the peak intensity of the hybrid material is lower than the pure MCM-48, which is since the uptake of molecules inside the pores reduces the scattering contrast between pore wall and pore, thus leading to a decrease in peak intensity. 39,43,44 Results for dye removal…”

Section: Structural Characterization Resultsmentioning

confidence: 99%

“…Step 1: MCM-48 was synthesized hydrothermally in a water bath at [40][41][42][43][44][45][46][47][48][49][50] C; 50 mL of deionized (DI) water was added to a 250-mL beaker immersed inside the water bath; 11.077 g CTAB was added and stirred vigorously for 30 min. After that, 9.6 mL TEOS and 3 mL NH 4 OH were added and sealed.…”

Section: Synthesis Of the Hybrid Mcm-48 Infused With Tio 2 Npsmentioning

confidence: 99%

Development and characterization of a hybrid mesoporous material infused with metallic oxide nanoparticles for water treatment

Deksissa

2017

Nanomaterials and Nanotechnology

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In the current study, a hybrid mesoporous material infused with metallic oxide nanoparticles, MCM-48 with TiO 2 nanoparticles, has been developed for potential application in water treatment. MCM-48 belongs to a family of mesoporous siliceous materials-M41S, in which MCM-48 has a unique three-dimensional cubic symmetry structure. Using this hybrid approach, it will allow the polluted water to pass through the strong yet high permeable structure of mesoporous material and to allow enough time for the pollutants to react with the metallic oxide nanoparticles infused on the porous structure so that the polluted water can be treated without introducing secondary pollutants. A modified hydrothermal method has been developed to synthesize three samples of this hybrid material with TiO 2 nanoparticles of 15, 50, and 300 nm in diameter, respectively. The microstructures before and after the infusion of nanoparticles are characterized using scanning electron microscope and X-ray powder diffraction. Under the current study, the synthesized samples are tested for their capability of removing organic dye and trace metals. The results have shown that while all three hybrid materials have shown over 80% adsorption rate for organic dye, the sample synthesized using 300 nm TiO 2 nanoparticle has shown the highest adsorption rate. Similarly, the highest adsorption rate for most trace metals tested here also occurs in the sample made with 300 nm TiO 2 nanoparticle. Coincidently, the sample prepared with 300 nm TiO 2 nanoparticle has a much larger internal surface area and smaller average pore size compared to the two other samples, which may lead to the higher adsorption rate of trace metals and organic dye tested here. This study has presented a hybrid mesoporous material that can be potentially used for pollutants removal in water treatment. Future study is needed to investigate how to reuse this hybrid mesoporous material and to obtain a further understanding of the mechanism affecting the micro structures of the hybrid material.

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Influence of the sorbate type on the XRD peak intensities of loaded MCM-41

Cited by 368 publications

References 2 publications

Synthesis, characterization and application of a novel sorbent, glucamine-modified MCM-41, for the removal/preconcentration of boron from waters

Synthesis, characterization and application of a novel sorbent, glucamine-modified MCM-41, for the removal/preconcentration of boron from waters

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

Development and characterization of a hybrid mesoporous material infused with metallic oxide nanoparticles for water treatment

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