Facile Synthesis and Surface Characterization of Titania-Incorporated Mesoporous Organosilica Materials

Gunathilake, Chamila; Kalpage, C. S.; Kadanapitiye, Murthi S.; Dassanayake, Rohan S.; Manchanda, Amanpreet S.; Gangoda, Mahinda

doi:10.3390/jcs3030077

Cited by 4 publications

(6 citation statements)

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“…However, as the final step, surfactants are removed by heating in air at high temperatures or by solvent extraction to obtain MCM-41 and SBA-15 [ 30 ]. Wu et al [ 79 ] and Hao et al [ 88 ] reported a detailed description of the mechanism. Paneka and co-workers have reported the synthesis of MCM-41 from fly ash using a hydrothermal process.…”

Section: Co 2 Adsorption Using Mesoporous Silica M...mentioning

confidence: 99%

“…Figure 6 shows the schematic diagram for synthesizing mesoporous silica using block copolymer. As can be seen from Figure 6, titania-incorporated organosilica-mesostructures (Ti-MO) are synthesized via condensation method using silica precursors ( [3-(trimethoxysilyl) propyl] isocyanurate and tetraethylorthosilicate) and titanium precursor (titanium isopropoxide) in the presence of the triblock copolymer, Pluronic P123 [88]. This method consists of template removal using two independent steps (i) extraction with a 95% ethanol solution and (ii) calcination of the sample at 350 • C. This method improves the adsorption capacity and enhances the structural properties such as specific surface area, micro-porosity, and pore volume.…”

Section: Synthesis Procedures Of Mesoporous Silicamentioning

confidence: 99%

“…tanium isopropoxide) in the presence of the triblock copolymer, Pluronic P123 [88]. method consists of template removal using two independent steps (i) extraction w 95% ethanol solution and (ii) calcination of the sample at 350 °C.…”

Section: Synthesis Procedures Of Mesoporous Silicamentioning

confidence: 99%

“…Figure 6. Mechanism for the synthesis of mesoporous silica using block copolymer (Re-printed with permission from Gunathilake et al[88]). …”

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Carbon Capture Using Porous Silica Materials

et al. 2023

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As the primary greenhouse gas, CO2 emission has noticeably increased over the past decades resulting in global warming and climate change. Surprisingly, anthropogenic activities have increased atmospheric CO2 by 50% in less than 200 years, causing more frequent and severe rainfall, snowstorms, flash floods, droughts, heat waves, and rising sea levels in recent times. Hence, reducing the excess CO2 in the atmosphere is imperative to keep the global average temperature rise below 2 °C. Among many CO2 mitigation approaches, CO2 capture using porous materials is considered one of the most promising technologies. Porous solid materials such as carbons, silica, zeolites, hollow fibers, and alumina have been widely investigated in CO2 capture technologies. Interestingly, porous silica-based materials have recently emerged as excellent candidates for CO2 capture technologies due to their unique properties, including high surface area, pore volume, easy surface functionalization, excellent thermal, and mechanical stability, and low cost. Therefore, this review comprehensively covers major CO2 capture processes and their pros and cons, selecting a suitable sorbent, use of liquid amines, and highlights the recent progress of various porous silica materials, including amine-functionalized silica, their reaction mechanisms and synthesis processes. Moreover, CO2 adsorption capacities, gas selectivity, reusability, current challenges, and future directions of porous silica materials have also been discussed.

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Section: Co 2 Adsorption Using Mesoporous Silica M...mentioning

confidence: 99%

Section: Synthesis Procedures Of Mesoporous Silicamentioning

confidence: 99%

Section: Synthesis Procedures Of Mesoporous Silicamentioning

confidence: 99%

“…Figure 6. Mechanism for the synthesis of mesoporous silica using block copolymer (Re-printed with permission from Gunathilake et al[88]). …”

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confidence: 99%

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Carbon Capture Using Porous Silica Materials

et al. 2023

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“…However, as the final step, surfactants are removed by heating in air at high temperatures or by solvent extraction to obtain MCM-41 and SBA-15 [30]. The detailed description about the mechanism was reported by Wu et al [79] and Hao et al [90]. Paneka and co-workers have reported the synthesis of MCM-41 from fly ash using a hydrothermal process.…”

Section: Synthesis Proceduresmentioning

confidence: 99%

Carbon Capture Using Porous Silica Materials

Amaraweera¹,

Gunathilake²,

Gunawardene³

et al. 2023

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As the major greenhouse gas, CO2 gas emission has been noticeably increased over the past decades resulting in global warming and climate change. As a result, it is imperative to reduce the excess CO2 in the atmosphere to hold “the increase in the global average temperature to well below 2°C (ideally 1.5°C) above pre-industrial levels set by the Paris Agreement on climate change. Among many ways, CO2 capture technology is considered as the most promising technology among the available technologies. Porous materials such as carbons, silica, zeolites, hollow fibers, and alumina are widely used as CO2 sorbents. However, among the available porous sloid sorbents, porous silica-based materials grabbed a significant attention due to their unique properties including high surface area, pore volume, good thermal and mechanical stability, and low cost. Therefore, development of porous silica materials as a promising CO2 absorbent is a continuously expanding research area in the current moment. Herein, we aim to visualize a full picture of the porous silica-based materials for CO2 capture. This review presents a comprehensive study of existing CO2 capture techniques and highlights the recent progress of different porous silica materials and synthesis processes. CO2 adsorption capacities of unmodified porous silica materials are less effective as compared with functionalized silica materials. Various research activities have been reported about functionalization of pours silica using amine groups. Therefore, in this review, different synthesis routes of amine-functionalized porous silica materials, CO2 adsorption capacities, gas selectivity and reusability were discussed. Moreover, the research challenges associated with the porous silica materials and future research directions are summarized.

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