Ordered Mesoporous Silica Prepared in Different Solvent Conditions: Application for Cu(II) and Pb(II) Adsorption
Abstract
:1. Introduction
2. Results and Discussion
2.1. FT-IR Analysis
2.2. Thermal Analysis
2.3. Nitrogen Porosimetry
2.4. Electron Microscopy
2.5. Small Angle Neutron Scattering
2.6. Metal Ion Adsorption
3. Conclusions
4. Materials and Methods
4.1. Sample Preparation
4.2. Characterization Methods
4.3. Metal Ion Adsorption Measurements
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sample | BET Surface Area (m²/g) | BET Constant | Pore Width (DFT) (nm) | Mean Pore Size (BJH) (nm) | Mean Pore Size (BJH) (nm) | Total Pore Volume (cm3/g) | Df (Adsorpt.) | Df (Desorpt.) |
---|---|---|---|---|---|---|---|---|
MeOE-0%-RT | 1793 | 10 | 3.53 | 3.30 | 3.07 | 0.961 | 2.846 | 2.876 |
MeOE-25%-RT | 1540 | 12 | 3.53 | 3.39 | 3.06 | 0.933 | 2.762 | 2.830 |
MeOE-50%-RT | 1620 | 13 | 3.53 | 3.41 | 3.34 | 1.013 | 2.761 | 2.828 |
MeOE-75%-RT | 1547 | 15 | 3.53 | 3.41 | 3.31 | 0.981 | 2.764 | 2.839 |
MeOE-0%-50C | 1568 | 13 | 3.53 | 3.39 | 3.07 | 0.998 | 2.750 | 2.864 |
MeOE-25%-50C | 1446 | 15 | 3.53 | 3.40 | 3.04 | 0.946 | 2.757 | 2.865 |
MeOE-50%-50C | 1428 | 12 | 3.53 | 3.06 | 3.06 | 1.016 | 2.750 | 2.864 |
MeOE-75%-50C | 1074 | 24 | 3.78 | 3.39 | 3.31 | 0.804 | 2.738 | 2.822 |
Adsorbent /Metal Ion | qm,exp (mg/g) | Langmuir Isotherm | Freundlich Isotherm | Sips Isotherm | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
qL (mg/g) | KL | R2 | KF (mg/g) | 1/nF | R2 | KS | qS (mg/g) | 1/ns | R2 | ||
MeOE-75%-RT /Cu2+ | 9.7 | 7.3 | 0.022 | 0.988 | 1.14 | 0.41 | 0.978 | 0.0026 | 10.2 | 0.3 | 0.990 |
MeOE-0%-RT /Pb2+ | 18.8 | 26.3 | 0.065 | 0.993 | 0.7 | 0.5 | 0.963 | 0.0061 | 22.2 | 0.6 | 0.995 |
Sorbent | Metal Ion | Adsorption Capacity (mg/g) | Reference |
---|---|---|---|
Kaolin | Pb(II) | 4.5 | [50] |
activated carbon | 6.7 | [50] | |
magnetic chlorapatite nanoparticles | 238 | [51] | |
zeolite | 9.9 | [52] | |
thiol functionalized iron-oxide loaded FDU-12 mesoporous silica | 287 | [53] | |
Fe3O4@carboxymethyl-cellulose | 152 | [54] | |
Fe3O4@SiO2@DMSA | 50.5 | [55] | |
Fe3O4@SiO2@TSD | 417 | [56] | |
Fe3O4@SiO2 -NH2 | 76.6 | [57] | |
pretreated Aspergillus niger | 32.6 | [58] | |
maghemite nanoparticle | 68.9 | [59] | |
magnetite nanoparticles | 37.3 | [60] | |
TiO2 nanoparticles | 21.7 | [61] | |
Al2O3 nanoparticles | 41.2 | [61] | |
MgO nanoparticles | 148 | [61] | |
Chitosan/graphene oxide | 461 | [62] | |
silica@ketoenol-pyrazole | 41.8 | [63] | |
ZnCl2-MCM-41 | 479 | [64] | |
EDTA/SBA-15 | 273 | [65] | |
waste silica coated by iron oxide | 8.2 | [66] | |
silica-magnetite composite | 14.9 | [67] | |
citrate coated SPION | 58.9 | [68] | |
gelatin-siloxane hybrid | 3.75 | [11] | |
chitosane-alginate hydrogel | 85 | [9] | |
thiol functionalized silica/magnetite | 0.8 | [69] | |
magnetic nano-zeolite | 476.1 | [70] | |
nano-silica made of Saccharum officinarum | 148 | [71] | |
Calcined MCM-41 | 18.8 | Present paper | |
zeolite | Cu(II) | 8.5 | [52] |
Fe3O4@SiO2 -NH | 29.9 | [57] | |
pretreated Aspergillus niger | 28.7 | [58] | |
maghemite nanoparticle | 34.0 | [59] | |
magnetite nanoparticles | 10.8 | [60] | |
TiO2 nanoparticles | 50.2 | [61] | |
Al2O3 nanoparticles | 47.9 | [61] | |
MgO nanoparticles | 149.1 | [61] | |
Chitosan/graphene oxide | 423.8 | [62] | |
silica@ketoenol-pyrazole | 76.9 | [63] | |
waste silica coated by iron oxide | 3.4 | [66] | |
magnetic nano-zeolite | 59.9 | [70] | |
steel slag/CNT composite | 132.8 | [72] | |
bifunctional silica nanospheres | 139.8 | [73] | |
nanosilica/nanopolyaniline | 108 | [74] | |
nanosilica/crosslinked nanopolyaniline | 105 | [74] | |
gelatin-siloxane hybrid | 1.76 | [11] | |
core-shell magnetite-silica NP | 41 | [75] | |
Calcined MCM-41 | 9.7 | Present paper |
Sample Name | CTAB (g) | TEOS (mL) | Synthesis Temperature | H2O (mL) | Ethanol (mL) | 2-Methoxyethanol (mL) |
---|---|---|---|---|---|---|
MeOET-0%-RT | 1 | 4 | r.t. | 192.5 | 68 | 0 |
MeOET-25%-RT | 1 | 4 | r.t. | 192.5 | 51 | 17 |
MeOET-50%-RT | 1 | 4 | r.t. | 192.5 | 34 | 34 |
MeOET-75%-RT | 1 | 4 | r.t. | 192.5 | 17 | 51 |
MeOET-0%-50C | 1 | 4 | 50 °C | 192.5 | 68 | 0 |
MeOET-25%-50C | 1 | 4 | 50 °C | 192.5 | 51 | 17 |
MeOET-50%-50C | 1 | 4 | 50 °C | 192.5 | 34 | 34 |
MeOET-75%-50C | 1 | 4 | 50 °C | 192.5 | 17 | 51 |
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Putz, A.-M.; Ivankov, O.I.; Kuklin, A.I.; Ryukhtin, V.; Ianăşi, C.; Ciopec, M.; Negrea, A.; Trif, L.; Horváth, Z.E.; Almásy, L. Ordered Mesoporous Silica Prepared in Different Solvent Conditions: Application for Cu(II) and Pb(II) Adsorption. Gels 2022, 8, 443. https://doi.org/10.3390/gels8070443
Putz A-M, Ivankov OI, Kuklin AI, Ryukhtin V, Ianăşi C, Ciopec M, Negrea A, Trif L, Horváth ZE, Almásy L. Ordered Mesoporous Silica Prepared in Different Solvent Conditions: Application for Cu(II) and Pb(II) Adsorption. Gels. 2022; 8(7):443. https://doi.org/10.3390/gels8070443
Chicago/Turabian StylePutz, Ana-Maria, Oleksandr I. Ivankov, Alexander I. Kuklin, Vasyl Ryukhtin, Cătălin Ianăşi, Mihaela Ciopec, Adina Negrea, László Trif, Zsolt Endre Horváth, and László Almásy. 2022. "Ordered Mesoporous Silica Prepared in Different Solvent Conditions: Application for Cu(II) and Pb(II) Adsorption" Gels 8, no. 7: 443. https://doi.org/10.3390/gels8070443