Unique allosteric effect-driven rapid adsorption of carbon dioxide in a newly designed ionogel [P<sub>4444</sub>][2-Op]@MCM-41 with excellent cyclic stability and loading-dependent capacity

Xue, Chunfeng; Zhu, Hongmin; Du, Xiaoze; An, Xiaowei; Wang, Enyang; Duan, Donghong; Shi, Lijuan; Hao, Xiaogang; Xiao, Bo; Peng, Changjun

doi:10.1039/c6ta10693e

Cited by 20 publications

(13 citation statements)

References 60 publications

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“…The new peak at 1623 cm –1 is due to the stretching vibration of the C=O bond in the formation of carbamate after the absorption of CO 2 , and the results suggested that carbamate is formed between the basic nitrogen atom of DMAPA and CO 2 . 44 , 45 In addition, the appearance of a broader peak at 3135 cm –1 suggests the possible formation of zwitterions (NH 2 + COO – ) during the absorption of CO 2 . 46 As shown in Figure 7 b, the characteristic peaks of bicarbonate can be found at 1047 and 1157 cm –1 after capturing CO 2 with [DMAPAH][OAc]-EDA-H 2 O (20 wt %).…”

Section: Resultsmentioning

confidence: 99%

Highly Efficient Absorption of CO₂ by Protic Ionic Liquids-Amine Blends at High Temperatures

Zhao

Yang

et al. 2021

ACS Omega

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In view of the increasingly serious harm of CO 2 to the environment, it is highly desirable to develop effective CO 2 absorbents. In this work, we demonstrated an efficient absorption of CO 2 by blends of protic ionic liquids (PILs) plus amines. The density and viscosity of investigative four PILs-amine mixtures were measured. By systematically studying the effects of the solution ratio, temperature, CO 2 partial pressure, and water content on the absorption of CO 2 , it is found that the 3-dimethylamino-1-propylamine acetate ([DMAPAH][OAc]) plus ethanediamine (EDA) mixture shows the highest CO 2 uptake of 0.295 g CO 2 per g absorbent at 50 °C and 1 bar and a further increase in the absorption of CO 2 to 0.299 g/g by adding water with a mass fraction of 20%. Furthermore, the absorption mechanism of CO 2 in the presence and absence of water has also been investigated by FTIR and NMR spectra.

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Section: Resultsmentioning

confidence: 99%

Highly Efficient Absorption of CO₂ by Protic Ionic Liquids-Amine Blends at High Temperatures

Zhao

Yang

et al. 2021

ACS Omega

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“…and so on. 105,106 Mohamed et al 107 Compared with the encapsulated conventional ILs, the CO 2 capacity of the encapsulated functionalized ILs was further improved because of the chemical interaction. 111 The encapsulated acetate-based ILs and amino acid ILs (AA-ENILs) are also studied for CO 2 adsorption.…”

Section: Supported Il Adsorbentsmentioning

confidence: 99%

State of the art of ionic liquid‐modified adsorbents forCO₂capture and separation

Zheng

Zeng

et al. 2021

AIChE Journal

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The enormous emission of carbon dioxide (CO 2 ) from industries has triggered a series of environmental issues. In recent years, ionic liquids (ILs) as novel absorbents are widely used for CO 2 capture owing to their low vapor pressure and tunable structures. IL-modified adsorbents have the advantages of both ILs and porous supports, such as high CO 2 selectivity and high specific surface area, which are novel agents to capture CO 2 with broad application prospects. In this review, more than 140 IL-modified adsorbents for CO 2 capture in recent years were systematically summarized. The types of ILs including conventional ILs and functionalized ILs on CO 2 separation performance of different IL hybrid adsorbents, and their adsorption mechanisms were also discussed. Finally, future perspectives on IL-modified adsorbents for CO 2 separation were further posed.

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“…The N 2 sorption isotherms of MCM-41 nanoparticle are shown in Figure 3a. The adsorption and desorption isotherms of nitrogen on the MCM-41 nanoparticle displayed a type IV isotherm according to the IUPAC classification with two obvious hysteresis loops at relative pressures P/P 0 of 0.27-0.37 and 0.37-0.95, indicating the presence of uniform mesopores and particle-stacked macropores [60]. At the adsorption branch, the adsorbed amount of N 2 increased gradually with an increase in the relative pressure by multilayer adsorption [49].…”

Section: Characterization Of the Mcm-41 Mesoporous Silicamentioning

confidence: 99%

Synthesis of MCM‐41 mesoporous silica nanoparticles supported titanium dioxide‐silver nanocomposite with excellent methanol electrooxidation performance

2021

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Considering the importance of the fuel cells, we developed an appropriate and efficient electrode system for electrocatalytic oxidation of methanol by fabricating the electrode with naturally based synthesized mobil composition of matter No. 41 (MCM-41) mesoporous silica nanoparticle along with silver and titanium dioxide nanoparticles. The extracted silica from natural stem straw was applied in the synthesis of MCM-41 mesoporous silica nanoparticle and characterization of the products was performed by different techniques. Then, the synthesized MCM-41 mesoporous silica is modified by silver and titanium dioxide nanoparticles and is employed in the fabrication of the modified carbon paste electrodes (Ag/TiO 2 /MCM-41/CPE) that are accordingly used in the electrocatalytic oxidation of methanol. The mechanistic and kinetic studies of the reactions are thoroughly examined based on cyclic voltammetry and chronoamperometry techniques. The results reveal that the modified carbon paste electrode with silver and titanium dioxide nanoparticles supported onto MCM-41 mesoporous silica exhibit much higher current densities and less overpotentials than that at the bare carbon paste electrode. The results of the electrocatalytic oxidation of methanol are then compared to the literature indicating that the developed system is favorable for the direct methanol fuel cells. K E Y W O R D Selectrochemistry, direct methanol fuel cells, stem can ash, MCM-41 nanoparticles, Ag/TiO 2 /MCM-41/CPE

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Unique allosteric effect-driven rapid adsorption of carbon dioxide in a newly designed ionogel [P₄₄₄₄][2-Op]@MCM-41 with excellent cyclic stability and loading-dependent capacity

Abstract: Allosteric effect-driven rapid stepwise CO2 adsorption of pyridine-containing anion functionalized ionic liquid [P4444][2-Op] confined into mesoporous silica MCM-41.

Cited by 20 publications

References 60 publications

Highly Efficient Absorption of CO₂ by Protic Ionic Liquids-Amine Blends at High Temperatures

Highly Efficient Absorption of CO₂ by Protic Ionic Liquids-Amine Blends at High Temperatures

State of the art of ionic liquid‐modified adsorbents forCO₂capture and separation

Synthesis of MCM‐41 mesoporous silica nanoparticles supported titanium dioxide‐silver nanocomposite with excellent methanol electrooxidation performance

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Unique allosteric effect-driven rapid adsorption of carbon dioxide in a newly designed ionogel [P4444][2-Op]@MCM-41 with excellent cyclic stability and loading-dependent capacity

Abstract: Allosteric effect-driven rapid stepwise CO2 adsorption of pyridine-containing anion functionalized ionic liquid [P4444][2-Op] confined into mesoporous silica MCM-41.

Cited by 20 publications

References 60 publications

Highly Efficient Absorption of CO2 by Protic Ionic Liquids-Amine Blends at High Temperatures

Highly Efficient Absorption of CO2 by Protic Ionic Liquids-Amine Blends at High Temperatures

State of the art of ionic liquid‐modified adsorbents forCO2capture and separation

Synthesis of MCM‐41 mesoporous silica nanoparticles supported titanium dioxide‐silver nanocomposite with excellent methanol electrooxidation performance

Contact Info

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Unique allosteric effect-driven rapid adsorption of carbon dioxide in a newly designed ionogel [P₄₄₄₄][2-Op]@MCM-41 with excellent cyclic stability and loading-dependent capacity

Highly Efficient Absorption of CO₂ by Protic Ionic Liquids-Amine Blends at High Temperatures

Highly Efficient Absorption of CO₂ by Protic Ionic Liquids-Amine Blends at High Temperatures

State of the art of ionic liquid‐modified adsorbents forCO₂capture and separation