Epoxide-functionalization of polyethyleneimine for synthesis of stable carbon dioxide adsorbent in temperature swing adsorption

Choi, Woosung; Min, Kyungmin; Kim, Chaehoon; Ko, Young Soo; Jeon, Jaewan; Seo, Hwimin; Park, Yong‐Ki; Choi, Minkee

doi:10.1038/ncomms12640

Cited by 236 publications

(294 citation statements)

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“…S35 †). 4,5,7,8,10,11,[13][14][15][20][21][22][23][24][25][26][27][28][29][30][31][32][33] Here, it is worth noting that the pore volume of our exfGO samples is much higher than those reported in the literature for amine impregnation.…”

Section: 7813-1521-28mentioning

confidence: 58%

“…5b). 4,7,8,[13][14][15][21][22][23][24][25][26][27][28]32,33 Here it is worth noting that the capacity loss of z21% in our TEPA@exfGO sample is arguably smaller than the z40% capacity loss from TEPA@mesoporous silica capsules, under similar synthetic and experimental conditions.…”

Section: 7813-1521-28mentioning

confidence: 58%

“…Due to their ultrahigh pore volume, exfGO-D samples can accept a record high TETA loading of z10 g g À1 of sample, without any sign of surface wetting (Table S6 †). 4,7,8,[13][14][15][21][22][23][24][25][26][27][28] Indeed, SEM micrographs still show void spaces for a TETA loading as high as 7.0 g g À1 in the exfGO-D sample (Fig. S26 †).…”

Section: 7813-1521-28mentioning

confidence: 99%

“…4c, S30, Tables S6 and S8 †). 4,5,7,8,10,11,[13][14][15][20][21][22][23][24][25][26][27][28][29][30][31][32][33] These uptake capacities are further conrmed under a simulated ue-gas stream of z100 ml min À1 , consisting of only 15% of CO 2 in N 2 , bubbled through water. A CO 2 capture of 35-40 wt% from the ue-gas is attained at 75 C ( Fig.…”

Section: 7813-1521-28mentioning

confidence: 99%

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Design of hyperporous graphene networks and their application in solid-amine based carbon capture systems

Gadipelli

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et al. 2017

J. Mater. Chem. A

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We demonstrate a simple and fully scalable method for obtaining hierarchical hyperporous graphene networks of ultrahigh total pore volume by thermal-shock exfoliation of graphene-oxide (exfGO) at a relatively mild temperature of 300 C. Such pore volume per unit mass has not previously been achieved in any type of porous solid. We find that the amount of oxidation of starting graphene-oxide is the key factor that determines the pore volume and surface area of the final material after thermal shock. Specifically, we emphasize that the development of the hyperporosity is directly proportional to the enhanced oxidation of sp 2 C]C to form C]O/COO. Using our method, we reproducibly synthesized remarkable meso-/macroporous graphene networks with exceptionally high total pore volumes, exceeding 6 cm 3 g À1. This is a step change compared to #3 cm 3 g À1 in conventional GO under similar synthetic conditions.Moreover, a record high amine impregnation of >6 g g À1 is readily attained in exfGO samples (solid-amine@exfGO), where amine loading is directly controlled by the pore-structure and volume of the host materials. Such solid-amine@exfGO samples exhibit an ultrahigh selective flue-gas CO 2 capture of 30-40 wt% at 75 C with a working capacity of z25 wt% and a very long cycling stability under simulated flue-gas stream conditions. To the best of our knowledge, this is the first report where a graphene-oxide based hyperporous carbon network is used to host amines for carbon capture application with exceptionally high storage capacity and stability.The widespread implementation of clean energy technologies, such as CCS (carbon capture and sequestration), fuel cells, batteries, supercapacitors, water electrolysers, and/or molecular storage and transport, is critical to tackle climate change and energy security issues. [1][2][3][4][5] In this regard, nanoporous carbons, metal-organic frameworks (MOFs), polymers and zeolites have gained tremendous attention as storage, transport and conversion media.2-7 Considerable performance improvements have been achieved by synthesizing and manipulating their functional features and porous structures.6 In the case of CO 2 capture, obtaining high enough CO 2 uptake capacities by using sorbent based materials under ue-gas conditions is still a challenging task. Many sorbent materials show good CO 2 uptake capacities but only at 0 C or 25 C and for 100% dry CO 2 .Porous sorbents including zeolites, activated carbons and MOFs do not show desirable selective CO 2 uptake under humid conditions and/or at >50 C. 8 This is a major setback for the implementation of CCS. The recent efforts on the introduction of CO 2 -philic amine groups into nanoporous structures have led to a large enhancement in selective carbon (CO 2 ) capture and effluent ue-gas tolerance. 4,7,8 However, the practical feasibility of these materials for CO 2 capture is compromised by the lack of a simple and large-scale synthesis method. Substantial improvements in both the structural stability and scalable synthesis of these...

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Section: 7813-1521-28mentioning

confidence: 58%

Section: 7813-1521-28mentioning

confidence: 58%

Section: 7813-1521-28mentioning

confidence: 99%

Section: 7813-1521-28mentioning

confidence: 99%

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Design of hyperporous graphene networks and their application in solid-amine based carbon capture systems

Gadipelli

Skipper

et al. 2017

J. Mater. Chem. A

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“…The basic chemistry of CO 2 adsorption on immobilized amines is very similar to amine scrubbing (typical chemisorption), which is responsible for its high CO 2 uptake in PCC conditions. Deactivation is a concern for amine‐based adsorbents, which can be alleviated by controlled regeneration or modification of the amines Metal‐organic frameworks (MOFs).…”

Section: Introductionmentioning

confidence: 99%

Carbon‐based adsorbents for post‐combustion capture: a review

et al. 2018

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Carbon dioxide capture is regarded as an effective method of greenhouse gas reduction. Post‐combustion capture from power plants will play a key role in CO2 abatement due to their important contribution to total CO2 emissions. Compared with the state‐of‐the‐art amine scrubbing technology, adsorption‐based post‐combustion capture (PCC) possesses excellent potential for lowering energy demand, and thus the total cost. Due to their relatively weak interaction with CO2, carbons showed lower adsorption capacity during PCC as compared with some benchmark materials (e.g. amine‐based adsorbents); however, their high cyclic stability and fast adsorption/desorption kinetics suggest that carbons have the important potential to achieve an optimized or balanced performance, and thus provide a low‐cost PCC process. In this review, we present preparation options and consider the structure‐performance relationship in CO2 capture with carbons, and summarize recent progress on using carbons for CO2 capture with special focus on PCC. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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In Situ Atomic Force Microscopy Analysis of the Corrosion Processes at the Buried Interface of an Epoxy‐like Model Organic Film and AA2024‐T3 Aluminum Alloy

2022

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The application of characterization methods with high spatial resolution to the analysis of buried coating/metal interfaces requires the design and use of model systems. Herein, an epoxy‐like thin film is used as a model coating resembling the epoxy‐based coatings and adhesives widely used in technical applications. Spin coating is used for the deposition of a 30 nm‐thin bilayer (BL) composed of poly‐(ethylenimine) (PEI) and poly[(o‐cresyl glycidyl ether)‐co‐formaldehyde] (CNER). Fourier‐transform infrared spectroscopy (FTIR) results confirm that the exposure of coated AA2024‐T3 (AA) samples to the corrosive electrolyte solution does not cause the degradation of the polymer layer. In situ atomic force microscopy (AFM) studies are performed to monitor local corrosion processes at the buried interface of the epoxy‐like film and the AA2024‐T3 aluminum alloy surface in an aqueous electrolyte solution. Hydrogen evolution due to the reduction of water as the cathodic corrosion reaction leads to local blister formation. Based on the results of the complementary energy‐dispersive X‐ray spectroscopy (EDX) analysis performed at the same region of interest, most of the hydrogen evolved originates at the vicinity of Mg‐containing intermetallic particles.

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Epoxide-functionalization of polyethyleneimine for synthesis of stable carbon dioxide adsorbent in temperature swing adsorption

Cited by 236 publications

References 54 publications

Design of hyperporous graphene networks and their application in solid-amine based carbon capture systems

Design of hyperporous graphene networks and their application in solid-amine based carbon capture systems

Carbon‐based adsorbents for post‐combustion capture: a review

In Situ Atomic Force Microscopy Analysis of the Corrosion Processes at the Buried Interface of an Epoxy‐like Model Organic Film and AA2024‐T3 Aluminum Alloy

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