Highly selective adsorbent by gamma radiation-induced grafting of glycidyl methacrylate on polyacrylonitrile/polyurethane nanofiber: Evaluation of CO2 capture

Imanian, Zahra; Hormozi, Faramarz; Torab‐Mostaedi, Meisam; Asadollahzadeh, Mehdi

doi:10.1016/j.seppur.2022.120749

Cited by 20 publications

(7 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sorption membranes are prepared with a similar technology, which means that electrospun nanofibers modified with different types of amines and MOFs reported in [12,13,18,[52][53][54] exhibited comparable or much higher sorption capacities in the range 11.6-66.8 cm 3 /g. However, all these cited works used multi-step technology (more than one technological step).…”

Section: Discussionmentioning

confidence: 99%

Permeable Membranes PUR/TETA and PUR/TEPA for CO2 Capture Prepared with One-Step Electrospinning Technology

Hoskovec

Čapková

Vostiňáková

et al. 2022

Fibers

View full text Add to dashboard Cite

A simple one-step technology of wire electrospinning is presented for the manufacturing of air-permeable CO2-capturing membranes, easily transferable to industrial production lines. The design of the chemically-modified polyurethane nanofiber membranes for CO2 capture was based on a combination of molecular modeling and technological experiments using one-step electrospinning (i.e., a modifying agent dissolved directly in a spinning solution). Polyurethane (PUR Larithane), chemically modified by TETA/TEPA amines, was used in the present study for the membrane design. Special attention was paid to two key parameters significant for the design of the functional unit, i.e., the CO2 sorption capacity and air permeability which depended on the amine concentration. The optimal combination of these parameters was found for the PUR/TEPA membrane (5 wt.% of TEPA in spinning solution): the sorption capacity was 13.97 cm3/g with an air permeability of 0.020 m/s. Molecular modeling proved to be a valuable tool that helped to clarify, at the molecular level, the structure of chemically-modified nanofibrous membranes.

show abstract

Section: Discussionmentioning

confidence: 99%

Permeable Membranes PUR/TETA and PUR/TEPA for CO2 Capture Prepared with One-Step Electrospinning Technology

Hoskovec

Čapková

Vostiňáková

et al. 2022

Fibers

View full text Add to dashboard Cite

show abstract

“…However, the CO2 adsorption capacity of PEI-and EDA-containing adorbents was found to be lower than radiation grafted dsorbents containing poly(GMA)/ethanolamine (EA) based on electrospun nanofibres of PP [13][14][15], PAN/PS [16] and PAN [23]. This can be understood taking into account not only the greater surface area of nanofibrous structure but also the higher DG and amine utilization efficiency in these adsorbents.…”

Section: Adsorption Of Co2 and N2 Mixturesmentioning

confidence: 98%

“…However, less efforts were exerted to develop selective radiation grafted adsorbents to mitigate air pollution by CO2 capture [2,12]. Indeed, there have been some studies on using aminated electrospun nanofibrous substrates made of PP [13][14][15], polyacrylonitrile (PAN) [2], PAN/polystyrene (PS) [16] for application in CO2 capture by RIGC and subsequent amine loading. Degrees of grafting (DG) above 100% were maintained in the adsorbent precursors to ensure having sufficient sites to load the desired amine groups and eventually acquire higher adsorption capacities coupled with faster kinetics than commercial resins.…”

Section: A R T I C L E I N F O a B S T R C Tmentioning

confidence: 99%

Converting polyolefin fibres into CO2 adsorbent by radiation induced grafting

Mohamad¹,

Zubair²,

Nasef³

et al. 2023

JIENS

View full text Add to dashboard Cite

Polyethylene (PE)/polypropylene (PP) bicomponent fibres were converted into three types of CO2 adsorbents by radiation induced graft copolymerization (RIGC) of glycidyl methacrylate (GMA) and N-vinylformamide (NVF) followed by treatment of poly(GMA) grafted fibres with polyethyleneimine (PEI) or ethylenediamine (EDA) and poly(NVF) grafted counterpart with hydrolysis to yield grafted poly(vinylamine) poly(VAm). The incorporation of poly(GMA) having same degree of grafting (DG%) and their subsequently aminated samples were verified by Fourier transform infrared (FTIR) and scanning electron microscopy (SEM). The performance of the three adsorbents was evaluated with pure CO2 and N2 gases and their mixtures of different ratios. The adsorbent with PEI showed CO2 adsorption capacity of 1.03 mmol/g, which was increased to 1.43 mmol/g when it was substituted with EDA, whereas this value was raised to 1.69 mmol/g in the adsorbent containing poly(VAm) at 30 bar and room temperature. Such CO2 adsorption capacity values were decreased when CO2/N2 mixtures were adsorbed, and the decrease was more profound at lower CO2 content in all adsorbents, but the performance of poly(VAm)-containing adsorbent remained superior. It can be concluded that RIGC provides a versatile method to convert PE/PP fibres into highly selective CO2 adsorbents with NVF grafting route is simpler and yield more efficient adsorbent for CO2 capture.

show abstract

“…A typical reactive monomer is glycidyl methacrylate (GMA) 39 . The ability to further modify grafted goods benefits from the graft polymerization of GMA onto polymer surfaces.…”

Section: Introductionmentioning

confidence: 99%

Targeted elimination of molybdenum ions from a leaching solution with the ability of radiated grafting GMA-PAN nanofibers

Fayazi,

Outokesh,

Asadollahzadeh

et al. 2024

Sci Rep

Self Cite

View full text Add to dashboard Cite

In this study, electrospun polyacrylonitrile nanofibers were effectively functionalized for enhanced molybdenum ion adsorption through a multi-step approach. Initially, glycidyl methacrylate was grafted onto the nanofibers via irradiation-induced grafting polymerization, followed by chemical modification with various amino groups, with triethylamine identified as the optimal modifier. The impacts of key synthesis parameters and reaction conditions on grafting level and adsorption capacity were thoroughly investigated, with a focus on achieving maximum efficiency. The resulting nanofibers were characterized using FTIR, SEM, and BET techniques, confirming the successful modification and structural features conducive to adsorption. Furthermore, a comprehensive experimental design, incorporating a central composite design, yielded optimal conditions for molybdenum adsorption, with key parameters including monomer concentration, irradiation dose, adsorbent mass, initial concentration, time, pH, temperature, and amine concentration. The adsorption kinetics were effectively described by the pseudo-second-order model, while the Langmuir isotherm model provided valuable insight into the adsorption behavior. Impressively, the adsorbent exhibited exceptional adsorption efficiency, surpassing 98% even after six adsorption–desorption cycles using 0.5 M HCl. Thermodynamic analysis revealed the exothermic nature of the adsorption process, along with decreased entropy and overall spontaneity, underlining the favorable conditions for molybdenum adsorption. Notably, the synthesized adsorbent demonstrated notable selectivity for molybdenum and achieved an impressive adsorption capacity of 109.79 mg/g, highlighting its potential for practical applications in molybdenum removal from aqueous solutions.

show abstract

Highly selective adsorbent by gamma radiation-induced grafting of glycidyl methacrylate on polyacrylonitrile/polyurethane nanofiber: Evaluation of CO2 capture

Cited by 20 publications

References 38 publications

Permeable Membranes PUR/TETA and PUR/TEPA for CO2 Capture Prepared with One-Step Electrospinning Technology

Permeable Membranes PUR/TETA and PUR/TEPA for CO2 Capture Prepared with One-Step Electrospinning Technology

Converting polyolefin fibres into CO2 adsorbent by radiation induced grafting

Targeted elimination of molybdenum ions from a leaching solution with the ability of radiated grafting GMA-PAN nanofibers

Contact Info

Product

Resources

About