Preparation of amine functionalized reduced graphene oxide/methyl diethanolamine nanofluid and its application for improving the CO2 and H2S absorption

Irani, Vahid; Tavasoli, Ahmad; Vahidi, Mehdi

doi:10.1016/j.jcis.2018.05.018

Cited by 80 publications

(18 citation statements)

References 70 publications

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“…The weaker and broader peak for (002) suggests that GO is partially reduced [ 54 ]. For N-GO, the peak around 2 θ = 14° decreased; conversely, the peak at 2 θ = 25° increased, indicating that the amine functionalization process caused a significant reduction of GO, as reported by Irani et al [ 43 ]. This reduction may be related with the higher thermal stability of N-GO as seen in the TGA results.…”

Section: Resultssupporting

confidence: 70%

“…A drop at 350 °C was present for N-GO instead of at 240 °C for pristine GO, suggesting the successful introduction of more stable functional groups in the GO structure. The increase in thermal stability of N-GO could be related to the presence of amino-carbons and to a partial reduction of GO, as reported by Irani et al [ 43 ]. Cl-GO exhibited a mass drop of 40% at 170–200 °C, which may correspond to acyl chloride groups.…”

Section: Resultsmentioning

confidence: 58%

“…For N-GO preparation, 400 mg of GO was added to 40 mL of ethylenediamine and left under sonication for 20 min at 20 °C, followed by an addition of 4 mg of HATU. The mixture was poured into a 100 mL Teflon autoclave to react solvothermally at 200 °C for 10 h [ 43 ]. Once the reaction was completed, the precipitate was rinsed with DI water.…”

Section: Methodsmentioning

confidence: 99%

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Preparation of Thin-Film Composite Nanofiltration Membranes Doped with N- and Cl-Functionalized Graphene Oxide for Water Desalination

et al. 2021

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In the present work, chemically modified graphene oxide (GO) was incorporated as a crosslinking agent into thin-film composite (TFC) nanofiltration (NF) membranes for water desalination applications, which were prepared by the interfacial polymerization (IP) method, where the monomers were piperazine (PIP) and trimesoyl chloride (TMC). GO was functionalized with monomer-containing groups to promote covalent interactions with the polymeric film. The composite GO/polyamide (PA) was prepared by incorporating amine and acyl chloride groups into the structure of GO and then adding these chemical modified nanomaterial during IP. The effect of functionalized GO on membrane properties and performance was investigated. Chemical composition and surface morphology of the prepared GO and membranes were analyzed by thermogravimetric analysis (TGA), Raman spectroscopy, FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). The fabricated composite membranes exhibited a significant increase in permeance (from 1.12 to 1.93 L m−2 h−1 bar−1) and salt rejection for Na2SO4 (from 95.9 to 98.9%) and NaCl (from 46.2 to 61.7%) at 2000 ppm, when compared to non-modified membranes. The amine- and acyl chloride-functionalized GO showed improved dispersibility in the respective phase.

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Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 58%

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Preparation of Thin-Film Composite Nanofiltration Membranes Doped with N- and Cl-Functionalized Graphene Oxide for Water Desalination

et al. 2021

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“…3D graphene materials have been studied for the removal of various pollutants, including gases (volatile organic compounds (VOCs), − H 2 S, SO 2 , CO 2 , , etc.) and aqueous impurities (dyes, − antibiotics, oils, ,,, organic solvents, heavy metal ions, etc.).…”

Section: Design Considerations Of 3d Graphene Materials For Various A...mentioning

confidence: 99%

3D Graphene Materials: From Understanding to Design and Synthesis Control

2020

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Carbon materials, with their diverse allotropes, have played significant roles in our daily life and the development of material science. Following 0D C60 and 1D carbon nanotube, 2D graphene materials, with their distinctively fascinating properties, have been receiving tremendous attention since 2004. To fulfill the efficient utilization of 2D graphene sheets in applications such as energy storage and conversion, electrochemical catalysis, and environmental remediation, 3D structures constructed by graphene sheets have been attempted over the past decade, giving birth to a new generation of graphene materials called 3D graphene materials. This review starts with the definition, classifications, brief history, and basic synthesis chemistries of 3D graphene materials. Then a critical discussion on the design considerations of 3D graphene materials for diverse applications is provided. Subsequently, after emphasizing the importance of normalized property characterization for the 3D structures, approaches for 3D graphene material synthesis from three major types of carbon sources (GO, hydrocarbons and inorganic carbon compounds) based on GO chemistry, hydrocarbon chemistry, and new alkali-metal chemistry, respectively, are comprehensively reviewed with a focus on their synthesis mechanisms, controllable aspects, and scalability. At last, current challenges and future perspectives for the development of 3D graphene materials are addressed.

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“…The reason for the high stability of Fe 3 O 4 @SiO 2 NPs was explained by Istrati et al Based on their report, the SiO 2 layer on the surface of Fe 3 O 4 can result in a steric barrier against core agglomeration, preventing interactions between nanoparticles, which plays a key role in increasing the stability of the Fe 3 O 4 NPs in the solution. In another study, Irani et al employed amino-functionalized graphene oxide nanodispersion in a bubble column absorber and increased CO 2 uptake up to 16.2% with respect to MDEA solution as a base solvent . However, the performance of functional NPs in an industrial and continuous system has remained an unanswered question over the recent years.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective Physical/Chemical CO₂ Separation by Functionalized Fe₃O₄ Nanoparticles in Hollow Fiber Membrane Contactors: Experimental and Modeling Approaches

et al. 2022

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Herein, different water-based modified magnetite nanodispersions of Fe3O4-proline (Fe3O4-P), Fe3O4-lysine (Fe3O4-L), Fe3O4@SiO2-proline (Fe3O4@SiO2-P), and Fe3O4@SiO2-lysine (Fe3O4@SiO2-L) were prepared to improve the stability and absorption capacity of bare Fe3O4 nanodispersion for selective physical/chemical carbon dioxide (CO2) separation in a polypropylene hollow fiber membrane contactor (PP HFMC). The liquid was passed through the tube side and CO2 gas was passed through the shell side concurrently. Subsequently, the impacts of varying nanoparticle (NP) loadings, gas/liquid flow rates (Q l/Q g), and NP stability on CO2 separation were elucidated. Considering the achieved results, all modified NPs revealed higher selective CO2 separation performances compared to bare Fe3O4 NPs because of functionalization with chemical reactants of CO2. Also, for the first time, to evaluate the influence of the CO2 inlet concentration and wetting parameter, a new and simple model was proposed in which the behavior of functional NPs was considered. Ultimately, the CO2 removal enhancements of 27.5, 57.14, 64.28, 72.8, and 96.42% were achieved for Fe3O4, Fe3O4-P, Fe3O4-L, Fe3O4@SiO2-P, and Fe3O4@SiO2-L at optimal NP loadings and in the best operational conditions (i.e., Q l = 10 mL·min–1 and Q g = 100 mL·min–1).

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Preparation of amine functionalized reduced graphene oxide/methyl diethanolamine nanofluid and its application for improving the CO2 and H2S absorption

Cited by 80 publications

References 70 publications

Preparation of Thin-Film Composite Nanofiltration Membranes Doped with N- and Cl-Functionalized Graphene Oxide for Water Desalination

Preparation of Thin-Film Composite Nanofiltration Membranes Doped with N- and Cl-Functionalized Graphene Oxide for Water Desalination

3D Graphene Materials: From Understanding to Design and Synthesis Control

Highly Selective Physical/Chemical CO₂ Separation by Functionalized Fe₃O₄ Nanoparticles in Hollow Fiber Membrane Contactors: Experimental and Modeling Approaches

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Preparation of amine functionalized reduced graphene oxide/methyl diethanolamine nanofluid and its application for improving the CO2 and H2S absorption

Cited by 80 publications

References 70 publications

Preparation of Thin-Film Composite Nanofiltration Membranes Doped with N- and Cl-Functionalized Graphene Oxide for Water Desalination

Preparation of Thin-Film Composite Nanofiltration Membranes Doped with N- and Cl-Functionalized Graphene Oxide for Water Desalination

3D Graphene Materials: From Understanding to Design and Synthesis Control

Highly Selective Physical/Chemical CO2 Separation by Functionalized Fe3O4 Nanoparticles in Hollow Fiber Membrane Contactors: Experimental and Modeling Approaches

Contact Info

Product

Resources

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Highly Selective Physical/Chemical CO₂ Separation by Functionalized Fe₃O₄ Nanoparticles in Hollow Fiber Membrane Contactors: Experimental and Modeling Approaches