Optimal Polyethyleneimine Molecular Weight and Arrangement for Modification of γ-Cyclodextrin Metal Organic Frameworks (γ-CD-MOFs) for Post-Combustion CO2 Capture
نویسندگان
چکیده
Modified γ-cyclodextrin metal organic frameworks (γ-CD-MOFs) are a promising eco-friendly sorbents for post-combustion CO2 capture. Polyethyleneimine (PEI) has been widely used modifying MOFs to enhance their sorption capacity and selectivity through the introduction of selective amine groups. The main objective this study was determine optimal PEI molecular weight arrangement (linear or branched) γ-CD-MOF’s capacity. γ-CD-MOFs were impregnated with linear as well branched weights 600, 1200 10,000. PEI-impregnated determined using quartz crystal microbalance assembly at partial pressures from 0.35–1.0 atm. Impregnation 600 g/mole achieved highest 0.9 mmole/g 1 atm, followed by (0.12 mmol/g). Modification other did not achieve detectable sorption, likely because pore blockage relatively larger weights, demonstrated docking simulations. Furthermore, control sorb CO2, lower attraction forces between large volume unmodified MOFs.
منابع مشابه
Polyethyleneimine Incorporated Metal-Organic Frameworks Adsorbent for Highly Selective CO2 Capture
A series of polyethyleneimine (PEI) incorporated MIL-101 adsorbents with different PEI loadings were reported for the first time in the present work. Although the surface area and pore volume of MIL-101 decreased significantly after loading PEI, all the resulting composites exhibited dramatically enhanced CO2 adsorption capacity at low pressures. At 100 wt% PEI loading, the CO2 adsorption capac...
متن کاملLigand-assisted enhancement of CO2 capture in metal-organic frameworks.
Using density functional theory with a van der Waals-corrected functional, we elucidate how CO(2) binds to a novel "BTT-type" metal-organic framework (MOF) featuring open metal centers. We show that CO(2) binds most favorably to open metal cation sites, but with an adsorption energy that can be three times more sensitive to the choice of the bridging ligand than to metal cation choice. A strong...
متن کاملγ-CD-Functionalized TiO2 Nanoparticles For the Photocatalytic Degradation of Organic Dyes
In this work, an efficient photocatalyst based on gamma-cyclodextrin-modified titanium dioxide nanoparticles (TiO2/γ-CD NPs) was synthesized and used for photocatalytic degradation of rhodamine B (RhB), methyl orange (MO) and methylene blue (MB). The results of FESEM, EDX, TEM, FT-IR, XRD and BET surface area measurement showed that the TiO2 NPs were effectively modifi...
متن کاملMetal-Organic Frameworks for CO2 Chemical Transformations.
Carbon dioxide (CO2 ), as the primary greenhouse gas in the atmosphere, triggers a series of environmental and energy related problems in the world. Therefore, there is an urgent need to develop multiple methods to capture and convert CO2 into useful chemical products, which can significantly improve the environment and promote sustainable development. Over the past several decades, metal-organ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Crystals
سال: 2022
ISSN: ['2073-4352']
DOI: https://doi.org/10.3390/cryst12101445