Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions
Two series of zirconium-incorporated-periodic-mesoporous-organosilica (Zr–PMO) materials were successfully prepared, via a co-condensation strategy, in the presence of Pluronic P123 triblock copolymer. The first series of Zr–PMO was prepared using tris[3-(trimethoxysilyl)propyl]isocyanurate (ICS), t...
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MDPI AG
2022-06-01
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| author | Chamila A. Gunathilake Rohan S. Dassanayake Chacrawarthige A. N. Fernando Mietek Jaroniec |
| author_facet | Chamila A. Gunathilake Rohan S. Dassanayake Chacrawarthige A. N. Fernando Mietek Jaroniec |
| author_sort | Chamila A. Gunathilake |
| collection | DOAJ |
| description | Two series of zirconium-incorporated-periodic-mesoporous-organosilica (Zr–PMO) materials were successfully prepared, via a co-condensation strategy, in the presence of Pluronic P123 triblock copolymer. The first series of Zr–PMO was prepared using tris[3-(trimethoxysilyl)propyl]isocyanurate (ICS), tetraethylorthosilicate (TEOS), and zirconyl chloride octahydrate(ZrCO), denoted as Zr-I-PMO, where I refers to ICS. The second series was synthesized using bis(triethoxysilyl)benzene (BTEE), TEOS, and ZrCO as precursors, named as Zr-B-PMO, where B refers to BTEE. Zr–PMO samples exhibit type (IV) adsorption isotherms, with a distinct H2-hysteresis loop and well-developed structural parameters, such as pore volume, pore width, high surface area, and narrow pore-size distribution. Structural properties were studied by varying the Zr:Si ratio, adding TEOS at different time intervals, and changing the amount of block copolymer-Pluronic P123 used as well as the calcination temperature. Surface characteristics were tailored by precisely controlling the Zr:Si ratio, upon varying the amount of TEOS present in the mesostructures. The addition of TEOS at different synthesis stages, notably, enhanced the pore size and surface area of the resulting Zr-I-PMO samples more than the Zr-B-PMO samples. Changing the amount of block copolymer, also, played a significant role in altering the textural and morphological properties of the Zr-I-PMO and Zr-B-PMO samples. Optimizing the amount of Pluronic P123 added is crucial for tailoring the surface properties of Zr–PMOs. The prepared Zr–PMO samples were examined for use in CO<sub>2</sub> sorption, at ambient temperature and pressure (25 °C, 1.2 bar pressure). Zr–PMO samples displayed a maximum CO<sub>2</sub> uptake of 2.08 mmol/g, at 25 °C and 1.2 bar pressure. However, analogous zirconium samples, without any bridging groups, exhibited a significantly lower CO<sub>2</sub> uptake, of 0.72 mmol/g, under the same conditions. The presence of isocyanurate- and benzene-bridging groups in Zr-I-PMO and Zr-B-PMO samples enhances the CO<sub>2</sub> sorption. Interestingly, results illustrate that Zr–PMO materials show potential in capturing CO<sub>2</sub>, at ambient conditions. |
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| spelling | doaj.art-7c07f0963dab4749be0bbc9a21b3b9742023-11-23T17:18:36ZengMDPI AGJournal of Composites Science2504-477X2022-06-016616810.3390/jcs6060168Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient ConditionsChamila A. Gunathilake0Rohan S. Dassanayake1Chacrawarthige A. N. Fernando2Mietek Jaroniec3Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Kandy 20400, Sri LankaDepartment of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Gangodawila, Nugegoda 10100, Sri LankaDepartment of Nano Science Technology, Faculty of Technology, Wayamba University of Sri Lanka, Kuliyapitiya 60200, Sri LankaDepartment of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USATwo series of zirconium-incorporated-periodic-mesoporous-organosilica (Zr–PMO) materials were successfully prepared, via a co-condensation strategy, in the presence of Pluronic P123 triblock copolymer. The first series of Zr–PMO was prepared using tris[3-(trimethoxysilyl)propyl]isocyanurate (ICS), tetraethylorthosilicate (TEOS), and zirconyl chloride octahydrate(ZrCO), denoted as Zr-I-PMO, where I refers to ICS. The second series was synthesized using bis(triethoxysilyl)benzene (BTEE), TEOS, and ZrCO as precursors, named as Zr-B-PMO, where B refers to BTEE. Zr–PMO samples exhibit type (IV) adsorption isotherms, with a distinct H2-hysteresis loop and well-developed structural parameters, such as pore volume, pore width, high surface area, and narrow pore-size distribution. Structural properties were studied by varying the Zr:Si ratio, adding TEOS at different time intervals, and changing the amount of block copolymer-Pluronic P123 used as well as the calcination temperature. Surface characteristics were tailored by precisely controlling the Zr:Si ratio, upon varying the amount of TEOS present in the mesostructures. The addition of TEOS at different synthesis stages, notably, enhanced the pore size and surface area of the resulting Zr-I-PMO samples more than the Zr-B-PMO samples. Changing the amount of block copolymer, also, played a significant role in altering the textural and morphological properties of the Zr-I-PMO and Zr-B-PMO samples. Optimizing the amount of Pluronic P123 added is crucial for tailoring the surface properties of Zr–PMOs. The prepared Zr–PMO samples were examined for use in CO<sub>2</sub> sorption, at ambient temperature and pressure (25 °C, 1.2 bar pressure). Zr–PMO samples displayed a maximum CO<sub>2</sub> uptake of 2.08 mmol/g, at 25 °C and 1.2 bar pressure. However, analogous zirconium samples, without any bridging groups, exhibited a significantly lower CO<sub>2</sub> uptake, of 0.72 mmol/g, under the same conditions. The presence of isocyanurate- and benzene-bridging groups in Zr-I-PMO and Zr-B-PMO samples enhances the CO<sub>2</sub> sorption. Interestingly, results illustrate that Zr–PMO materials show potential in capturing CO<sub>2</sub>, at ambient conditions.https://www.mdpi.com/2504-477X/6/6/168CO<sub>2</sub> uptakephysisorptionperiodic mesoporous organosilicazirconiaone pot synthesis |
| spellingShingle | Chamila A. Gunathilake Rohan S. Dassanayake Chacrawarthige A. N. Fernando Mietek Jaroniec Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions Journal of Composites Science CO<sub>2</sub> uptake physisorption periodic mesoporous organosilica zirconia one pot synthesis |
| title | Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions |
| title_full | Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions |
| title_fullStr | Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions |
| title_full_unstemmed | Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions |
| title_short | Zirconium Containing Periodic Mesoporous Organosilica: The Effect of Zr on CO<sub>2</sub> Sorption at Ambient Conditions |
| title_sort | zirconium containing periodic mesoporous organosilica the effect of zr on co sub 2 sub sorption at ambient conditions |
| topic | CO<sub>2</sub> uptake physisorption periodic mesoporous organosilica zirconia one pot synthesis |
| url | https://www.mdpi.com/2504-477X/6/6/168 |
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