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Design, synthesis, and physicochemical study of a biomass-derived CO₂ sorbent 2,5-furan-bis(iminoguanidine).

ABSTRACT: In this study, the concept of biomass-based direct air capture is proposed, and the aminoguanidine CO₂ chemical sorbent 2,5-furan-bis(iminoguanidine) (FuBIG) was designed, synthesized, and elucidated for the physicochemical properties in the process of CO₂ capture and release. Results showed that the aqueous solution of FuBIG could readily capture CO₂ from ambient air and provided an insoluble tetrahydrated carbonate salt FuBIGH₂(CO₃) (H₂O)₄ with a second order kinetics. Hydrogen binding modes of iminoguanidine cations with carbonate ions and water were identified by single-crystal X-ray diffraction analysis. Equilibrium constant (K) and the enthalpies (ΔH) for CO₂ absorption/release were obtained by thermodynamic and kinetic analysis (K₇ = 5.97 × 10⁴, ΔH₇ = -116.1 kJ/mol, ΔH₈ = 209.31 kJ/mol), and the CO₂-release process was conformed to the geometrical phase-boundary model (1-(1-α)^1/3 = kt). It was found that the FuBIGH₂(CO₃) (H₂O)₄ can release CO₂ spontaneously in DMSO without heating. Zebrafish models revealed a favorable biocompatibility of FuBIG.

SUBMITTER: Zhang Q

PROVIDER: S-EPMC7995611 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Undergraduate research experiences are an instrumental component of student development, increasing conceptual understanding, promoting inquiry-based learning, and guiding potential career aspirations. Moving one step further, as research continues to become more interdisciplinary, there exists potential to accelerate student growth by granting additional perspectives through collaborative research. This study demonstrates the utilization of a model collaborative research project, specifically investigating the development of sorbent technologies for efficient CO2 capture, which is an important research area for improving environmental sustainability. A model CO2 sorbent system of heteroatom-doped porous carbon is utilized to enable students to gain knowledge of adsorption processes, through combined experimental and computational investigations and learnings. A particular emphasis is placed on creating interdisciplinary learning experiences, exemplified by using density functional theory (DFT) to understand molecular interactions between doped carbon surfaces and CO2 molecules as well as explain underlying physical mechanisms that govern experimental results. The experimental observations about CO2 sorption performance of doped ordered mesoporous carbons (OMCs) can be correlated with simulation results, which can explain how the presence of heteroatom functional groups impact the ability of porous carbon to selectively adsorb CO2 molecules. Through an inquiry-focused approach, students were observed to couple interdisciplinary results to construct holistic explanations, while developing skills in independent research and scientific communications. This collaborative research project allows students to obtain a deeper understanding of sustainability challenges, cultivate confidence in independent research, prepare for future career paths, and most importantly, be exposed to strategies employing interdisciplinary research approaches to address scientific challenges.

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Design, synthesis, and physicochemical study of a biomass-derived CO₂ sorbent 2,5-furan-bis(iminoguanidine).

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OmicsDI is part of the ELIXIR infrastructure

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Dataset Information

Design, synthesis, and physicochemical study of a biomass-derived CO2 sorbent 2,5-furan-bis(iminoguanidine).

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Design, synthesis, and physicochemical study of a biomass-derived CO₂ sorbent 2,5-furan-bis(iminoguanidine).