Hierarchical porous nitrogen-doped carbon supported MgO as an excellent composite for CO2 capture at atmospheric pressure and conversion to value-added products

Jean-Louis, K.; Ravi, Krishnan; Singh, Manpreet; Neogi, Subhadip; Grafouté, Moussa; Biradar, Ankush V.

doi:10.1016/j.jcou.2022.102222

Cited by 22 publications

(5 citation statements)

References 42 publications

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“…On the other hand, the XPS analysis, as illustrated in Figure 1 e, revealed the elemental composition of the sample, identifying the presence of oxygen, carbon, calcium, nitrogen, silicon, and magnesium. This was determined through the respective energy binding (EB) bands for each element: O1s, C1s, Ca2p, N1s, Si2p, and MgKl1 [ 36 , 37 , 38 , 39 , 40 ]. The analytical results reveal both the atomic percentage and the weight percentage of elements detected in the sample: 68.1% of the atoms in the sample are carbon (C1s), followed by oxygen (26.7%) and nitrogen (2.9%).…”

Section: Resultsmentioning

confidence: 99%

Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO

Cortés-Valadez,

Baños-López,

Hernández-Rodríguez

et al. 2024

Nanomaterials

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A composite material composed of anodized aluminum oxide (AAO), carbon (C), and magnesium oxide (MgO) was developed for CO2 capture applications. Inspired by the bryophyte organism, the AAO/C/MgO composite mirrors two primary features of these species—(1) morphological characteristics and (2) elemental composition—specifically carbon, oxygen, and magnesium. The synthesis process involved two sequential steps: electroanodization of aluminum foil followed by a hydrothermal method using a mixture of glucose and magnesium chloride (MgCl2). The concentration of MgCl2 was systematically varied as the sole experimental variable across five levels—1 mM, 2 mM, 3 mM, 4 mM, and 5 mM—to investigate the impact of MgO formation on the samples’ chemical and physical properties, and consequently, their CO2 capture efficiency. Thus, scanning electron microscopy analysis revealed the AAO substrate’s porous structure, with pore diameters measuring 250 ± 30 nm. The growth of MgO on the AAO substrate resulted in spherical structures, whose diameter expanded from 15 nm ± 3 nm to 1000 nm ± 250 nm with increasing MgCl2 concentration from the minor to major concentrations explored, respectively. X-ray photoelectron spectroscopy (XPS) analysis indicated that carbon serves as a linking agent between AAO and MgO within the composite. Notably, the composite synthesized with a 4 mM MgCl2 concentration exhibited the highest CO2 capture efficiency, as determined by UV-Vis absorbance studies using a sodium carbonate solution as the CO2 source. This efficiency was quantified with a ‘k’ constant of 0.10531, significantly higher than those of other studied samples. The superior performance of the 4 mM MgCl2 sample in CO2 capture is likely due to the optimal density of MgO structures formed on the sample’s surface, enhancing its adsorptive capabilities as suggested by the XPS results.

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Section: Resultsmentioning

confidence: 99%

Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO

Cortés-Valadez,

Baños-López,

Hernández-Rodríguez

et al. 2024

Nanomaterials

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“…Many ordered porous materials with the large surface area such as zeolites, MOFs, COFs, and mesoporous silica have been explored to immobilize ILs and PILs for the preparation of heterogeneous IL-derived catalysts [16,27,28,50]. Carbon materials with the features such as large surface area, tunable porosity, and abundant surface functional groups have been explored as the supports and catalysts in the CO 2 cycloadditions [51][52][53][54][55][56][57]. For instance, as a metal-free heterogeneous catalyst, graphene oxide (GOs) achieved 90.3% conversion and 98.6% selectivity in converting styrene oxide to styrene cyclic carbonate at 140 °C and 1 bar by using N,N-Dimethylformamide (DMF) as the solvent [55].…”

Section: Introductionmentioning

confidence: 99%

Ordered mesoporous carbon encapsulated linear poly(ionic liquid)s enabling synergy effect of surface groups and ionic moieties for CO2 fixation under mild conditions

Song

et al. 2023

Carb Neutrality

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Carbon dioxide (CO2) fixation into value-added chemicals has attracted growing attention and one promising atom-efficient pathway is via the cycloaddition with three member-ring compounds like epoxides. Herein, we demonstrated that encapsulation of linear poly(ionic liquid)s (PILs) on ordered mesoporous carbon materials provides a facile and feasible approach towards environmental-friendly heterogeneous catalysts with high performance in CO2 cycloaddition with epoxides under mild conditions. A series of novel linear phenolic hydroxyl group functional imidazolium-based PILs synthesized from hydroxymethylation reaction between 4-(imidazol-1-yl)phenol-1-butyl-imidazolium iodide and formaldehyde was loaded on ordered mesoporous carbon FDU-15–600 derived from mesoporous phenolic resin. By virtue of controlling the initial polymerization temperature, the molecular weight of PILs was facilely modulated, reaching strong host–guest interaction during the PIL immobilization. Highly stable immobilized PIL species with spatial satisfaction of ionic moieties and surface groups were thus realized to enable a synergic CO2 conversion via cycloaddition with epoxides. The optimal catalyst exhibited high yield and stable recyclability by using atmospheric CO2 under metal-additive-solvent-free conditions and the activity surprisingly exceeded the corresponding homogeneous parent IL and PIL. Excellent substrate compatibility was found by extending the transformation of more than ten epoxides including the inert ones such as disubstituted cyclohexene oxide. The significantly enhanced activity is attributed to the synergistic effect of the surface hydrogen groups and ionic moieties to accelerate the rate-determining ring-opening process.

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“…20 The newly developed porous hybrid structures (metalorganic frameworks: MOFs), because of their remarkable surface area, excellent thermo-chemical stability, the simplicity of fine-tuning the pore chemistry, and the ability to affix taskspecific functionalities, are the best potential candidates. [21][22][23][24][25][26][27] Nevertheless, decreased MOF-CO 2 interaction with increasing adsorption temperature severely reduces the CO 2 uptake in MOFs, and only a handful of examples exist for humid-condition CO 2 uptake because of MOF instability and/or pore blockage by water molecules. 13,28 Thus, the fabrication of robust and tailor-made CO 2 -phillic frameworks is of utmost importance.…”

Section: Introductionmentioning

confidence: 99%

Contrasting-functionality-decked robust MOF for moisture-tolerant and variable-temperature CO₂ adsorption with in-built urea group mediated mild condition cycloaddition

Singh

Mondal

RAJPUT

et al. 2023

Inorg. Chem. Front.

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Hierarchical porous nitrogen-doped carbon supported MgO as an excellent composite for CO2 capture at atmospheric pressure and conversion to value-added products

Cited by 22 publications

References 42 publications

Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO

Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO

Ordered mesoporous carbon encapsulated linear poly(ionic liquid)s enabling synergy effect of surface groups and ionic moieties for CO2 fixation under mild conditions

Contrasting-functionality-decked robust MOF for moisture-tolerant and variable-temperature CO₂ adsorption with in-built urea group mediated mild condition cycloaddition

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Hierarchical porous nitrogen-doped carbon supported MgO as an excellent composite for CO2 capture at atmospheric pressure and conversion to value-added products

Cited by 22 publications

References 42 publications

Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO

Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO

Ordered mesoporous carbon encapsulated linear poly(ionic liquid)s enabling synergy effect of surface groups and ionic moieties for CO2 fixation under mild conditions

Contrasting-functionality-decked robust MOF for moisture-tolerant and variable-temperature CO2 adsorption with in-built urea group mediated mild condition cycloaddition

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Product

Resources

About

Contrasting-functionality-decked robust MOF for moisture-tolerant and variable-temperature CO₂ adsorption with in-built urea group mediated mild condition cycloaddition