Continuous generation of mesoporous silica particles via the use of sodium metasilicate precursor and their potential for CO2 capture

Lin, Liang-Yi; Bai, Hsun-Ling

doi:10.1016/j.micromeso.2010.07.012

Cited by 29 publications

(26 citation statements)

References 23 publications

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“…6b illustrates the powder XRD patterns of the MCM-41(PWP) and MCM-41(NaSi) samples. One can see that MCM-41(NaSi) sample exhibited a welldefined (1 0 0) diffraction peak located at 2Â of 2.3-2.6 • and three reflections of (1 1 0), (2 0 0) and (2 1 0) at 4.2, 4.7 and 6.2 • , respectively, which could be indexed on a hexagonal lattice of mesoporous silica materials [6,12,22]. Similar observation was also seen for the MCM-41(PWP) sample, thus indicating that highly ordered mesostructure was obtained using the supernatant extracted from photonic waste powder as the silica source.…”

Section: Characterization Of Sediment and Supernatant Liquid After Exmentioning

confidence: 95%

“…On the other hand, the FTIR spectrum of fresh TEPA/MCM-41(PWP) exhibited significant bands at 2933, 2814, 1630, 1563, 1470 and 1080 cm −1 . The bands at 2933 and 2814 cm −1 are related to C-H 2 stretching from CH 2 CH 2 CH 2 -NH 2 (RNH 2 ), while 1563 and 1470 cm −1 can be assigned to N-H 2 vibration in the primary amine group (RNH 2 ) [6]. And the band at 1630 cm −1 can be assigned to the NH 3 + deformation of the protonated primary amine group or secondary amine group (-NH 3 + O-Si/-NH 2 + O-Si).…”

Section: Application As Adsorbents For Co 2 Capturementioning

confidence: 99%

“…These mesoporous silica materials with high surface area (>1000 m 2 /g), narrow pore distribution and well-defined pore structures are useful in the application fields of catalysis and adsorption [3,4]. Generally, such materials can be synthesized using various sources of silica, including expensive organic precursors such as silicon alkoxides [5] and cost-effective reagents like colloidal silica and sodium silicate [6]. The use of cheaper silica source instead of expensive silica precursor in the synthesis process would be a great contribution to industrial applications, especially for the environmental protection applications which require massive quantity of adsorbents or catalysts.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Silica materials recovered from photonic industrial waste powder: Its extraction, modification, characterization and application

Lin

Kuo

Bai

2011

Journal of Hazardous Materials

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Section: Characterization Of Sediment and Supernatant Liquid After Exmentioning

confidence: 95%

Section: Application As Adsorbents For Co 2 Capturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silica materials recovered from photonic industrial waste powder: Its extraction, modification, characterization and application

Lin

Kuo

Bai

2011

Journal of Hazardous Materials

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“…According to IUPAC classification, the sample depicted in Figure 4a showed type IV isotherm and type H1 hysteresis, typical of mesoporous material with capillary condensation, suggesting the presence of particles of even size regularly ordered 15,23 . In Figure 4b, it can be observed pore size distributions in the range of 26 and 35 A.…”

Section: Bet and Bjh Analysesmentioning

confidence: 99%

“…Since 1990s, the use of mesoporous materials synthesized from M41S has been extensively investigated in areas including environment 5,6 catalysis 7-9 , energy 10 , and biomedicine 11 . A wide variety of reports has addressed the versatility of MCM-41 [12][13][14][15][16] which became the most popular example of the M41S family due to a combination of superior properties, such as high surface area, thermal stability and porous volume that can vary according to the surfactant used. In addition, average pore sizes can vary between 2 and 50 nm 17,18 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis Optimization of MCM-41 for CO2 Adsorption Using Simplex-centroid Design

et al. 2015

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There is a growing concern on the relationship between anthropogenic carbon dioxide and climate changes. A promising approach is the adsorption technology using mesoporous MCM-41 materials that can be easily synthesized to depict structures adequate to the flow of gas. The aim of this study was to improve the synthesis of MCM-41 using cationic surfactant mixtures and apply the resulting materials to CO 2 adsorption. To that end, the simplex-centroid design was applied to optimize CO 2 adsorption from seven mesoporous MCM-41 materials synthesized by the hydrothermal method using surfactants from hydrophobic chains of different sizes. The cationic surfactants used were tetradecyltrimetylammonium bromide, cetyltrimethylammonium bromide, trimethyloctadecylammonium bromide and their mixture at ratios of 1:1 and 1:1:1. The CO 2 adsorption was investigated using thegravimetric method at 298 K and pressures up to 40 bar. The resulting materials, labelled C 17 , C 19 , C 21 , C 17 C 19 , C 19 C 21 , C 17 C 21 and C 17 C 19 C 21 , were characterized by XRD, FTIR, TG and SEM and showed significant differences in structure as well as in the mass of CO 2 adsorption. The response models showed that the best combination of the surfactants resulted from C 17 C 19 sample, which presented synergistic interactions reaching the highest value of CO 2 adsorption (0.62 g CO 2 /g adsorbent), compared to other samples.

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Encapsulation of Biosynthesized Nanosilver in Silica Composites for Sustainable Antimicrobial Functionality

et al. 2018

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Silver nanoparticles (AgNPs) have become known as a broad‐spectrum antimicrobial agent. The antimicrobial activity of AgNPs is dependent on the particle size and the dispersion status. In this study, a simple and effective approach is developed for sequestering the biosynthesized AgNPs in silica composites during the gel formation of MCM‐41. Composites with different Ag concentrations of 0.034% (Ag1@MCM‐41), 0.151% (Ag2@MCM‐41), and 0.369% (Ag3@MCM‐41) are synthesized and then heated at 400 °C to produce Ag1@MCM‐41H, Ag2@MCM‐41H, and Ag3@MCM‐41H, respectively. The samples are characterized by flame atomic absorption spectrometry, Fourier‐transform infrared spectroscopy, X‐ray diffraction, N2 physisorption, scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis. The AgNPs are confirmed to be highly dispersed in the amorphous silica framework. The antimicrobial activity of the AgNP–silica samples is investigated against Staphylococcus aureus, Escherichia coli, and Candida albicans using the cup–plate and the plate‐count techniques. The results show an excellent antimicrobial effect of these samples against the studied microorganisms. Importantly, the AgNP–silica samples are found to be stable up to 58 months under ambient conditions. These stable and powerful antimicrobial composites provide a more practical and effective strategy for combating biomedical pathogens and public health threats.

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Continuous generation of mesoporous silica particles via the use of sodium metasilicate precursor and their potential for CO2 capture

Cited by 29 publications

References 23 publications

Silica materials recovered from photonic industrial waste powder: Its extraction, modification, characterization and application

Silica materials recovered from photonic industrial waste powder: Its extraction, modification, characterization and application

Synthesis Optimization of MCM-41 for CO2 Adsorption Using Simplex-centroid Design

Encapsulation of Biosynthesized Nanosilver in Silica Composites for Sustainable Antimicrobial Functionality

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