Preparation of aminated nanoporous nanofiber by solvent casting/porogen leaching technique and dye adsorption modeling

Mahmoodi, Niyaz Mohammad; Mokhtari-Shourijeh, Zahra

doi:10.1016/j.jtice.2016.05.042

Cited by 69 publications

(14 citation statements)

References 52 publications

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“…Another advantage is that the use of textile technology allowing the manufacture of inexpensive fibrous materials from synthetic fiber complex in the form of woven cloth and bulky knit fabrics . Nanoscale materials are usually employed for improving the performance of catalysts because of their small size or larger specific surface area which offers much enhanced and even new functions that cannot be achieved by bulk materials . Compared with other nanofibrous materials, electrospun polyacrylonitrile (PAN) nanofibrous membranes show a lot of extraordinary properties such as small fiber diameters, extremely large‐specific surface areas, remarkably high porosity, better capability to control fiber diameter and interfibrous pore sizes among nanofibers as well as cost‐effectiveness .…”

Section: Introductionmentioning

confidence: 99%

“…3,15 Nanoscale materials are usually employed for improving the performance of catalysts because of their small size or larger specific surface area which offers much enhanced and even new functions that cannot be achieved by bulk materials. [16][17][18][19][20][21][22] Compared with other nanofibrous materials, electrospun polyacrylonitrile (PAN) nanofibrous membranes show a lot of extraordinary properties such as small fiber diameters, extremely largespecific surface areas, remarkably high porosity, better capability to control fiber diameter and interfibrous pore sizes among nanofibers as well as cost-effectiveness. 23 Furthermore, the cyano-groups of PAN fiber can be transformed into various functional groups to improve their adsorption capacity 16,[24][25][26] or catalytic performance 4,15 for obtaining high pollutant removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Coordination Kinetics of Different Metal Ions with the Amidoximated Polyacrylonitrile Nanofibrous Membranes and Catalytic Behaviors of their Complexes

Dong

Kang

et al. 2016

Bulletin Korean Chem Soc

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Two transition metal ions (Fe3+ and Cu2+) and a rare earth metal ion (Ce3+) were selected to coordinate with amidoximated polyacrylonitrile (PAN) nanofibrous membrane for preparing three metal modified PAN nanofibrous membrane complexes (M‐AO‐n‐PANs, M = Fe, Cu, or Ce) as the heterogeneous Fenton catalysts for the dye degradation in water under visible irradiation. The coordination kinetics of three metal ions with modified PAN nanofibrous membranes was studied and the catalytic properties of the resulting complexes were also compared. The results indicated that increasing metal ion concentrations in solution or higher coordination temperature led to a significant increase in metal content, particularly in Fe and Cu contents of the complexes. Their coordination process could be described using Langmuir isotherm and pseudo‐second‐order kinetic equations. Moreover, Fe‐AO‐n‐PAN had the best photocatalytic efficiency for the dye degradation in acidic medium, but a lower photocatalytic activity than Cu‐AO‐n‐PAN in alkali medium.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coordination Kinetics of Different Metal Ions with the Amidoximated Polyacrylonitrile Nanofibrous Membranes and Catalytic Behaviors of their Complexes

Dong

Kang

et al. 2016

Bulletin Korean Chem Soc

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“…They found that the modified nanofibers have good adsorption capacity towards the removal of MO and RR dye and can be used five times without significant decline in their efficiency. Mahmoodi et al developed novel porous amino-functionalized PAN nanofibers fabricated through incorporation of Na 2 CO 3 salt into PAN nanofibers by electrospinning followed by leaching and functionalization processes [158]. Amine-functionalization was carried out by triethylenetetriamine and was used for the removal of Direct Blue 78 dye.…”

Section: Functionalized Epnfs As Adsorbent For Dyes Removalmentioning

confidence: 99%

Modified Electrospun Polymeric Nanofibers and Their Nanocomposites as Nanoadsorbents for Toxic Dye Removal from Contaminated Waters: A Review

Thamer

Aldalbahi

et al. 2020

Polymers

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Electrospun polymer nanofibers (EPNFs) as one-dimensional nanostructures are characterized by a high surface area-to-volume ratio, high porosity, large number of adsorption sites and high adsorption capacity. These properties nominate them to be used as an effective adsorbent for the removal of water pollutants such as heavy metals, dyes and other pollutants. Organic dyes are considered one of the most hazardous water pollutants due to their toxic effects even at very low concentrations. To overcome this problem, the adsorption technique has proven its high effectiveness towards the removal of such pollutants from aqueous systems. The use of the adsorption technique depends mainly on the properties, efficacy, cost and reusability of the adsorbent. So, the use of EPNFs as adsorbents for dye removal has received increasing attention due to their unique properties, adsorption efficiency and reusability. Moreover, the adsorption efficiency and stability of EPNFs in aqueous media can be improved via their surface modification. This review provides a relevant literature survey over the last two decades on the fabrication and surface modification of EPNFs by an electrospinning technique and their use of adsorbents for the removal of various toxic dyes from contaminated water. Factors affecting the adsorption capacity of EPNFs, the best adsorption conditions and adsorption mechanism of dyes onto the surface of various types of modified EPNFs are also discussed. Finally, the adsorption capacity, isotherm and kinetic models for describing the adsorption of dyes using modified and composite EPNFs are discussed.

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“…To permanently impress upon these properties, different techniques are in place to fabricate scaffolds. For example, solvent‐casting/porogen‐leaching, 7 extrusion foaming, 8 3D printing, 9 and electrospinning 10–11 . However, electrospinning is the most versatile and widely selected technique for creating nanofibers appropriate for a range of tissue‐engineering applications 12–14 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and cell viability of bifunctional medical‐grade polyurethane nanofiber: Functionalization by bone inducing and bacteria ablating materials

Ashraf

Maqbool

Beigh

et al. 2021

J of Applied Polymer Sci

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There is an extensive possibility of improving characteristics of fibers used in hard tissue engineering, being hydrophobic and less osteoconductive, resulting in the dynamic growth of new tissues. The current work focuses on the fabrication of nanofibers incorporated with titanium dioxide (TiO 2) ''as osteoconductive'' and silver (Ag) ''as self-healing'' nanoparticles (NPs). The incorporation of AgNO 3 by in situ method not only helped to impart the antibacterial activity but also changed the contact angle from 81 ± 03 in the case of pristine nanofibers to 74 ± 03 , 61 ± 03 , 50 ± 08 , and 39 ± 1.1 , in the composite scaffolds containing 0.01, 0.03, 0.05, and 0.07 M of Ag salts. The incubation in simulated body fluid at 37 C to induce mineralization on nanofiber scaffolds indicated Ca and P crystals' formation. The antibacterial activity showed significantly more toxicity toward E. coli (8.3 ± 0.9 mm) than S. aureus (1.2 ± 0.1 mm). Biocompatibility studies using MTT assay on the pre-osteoblasts showed that both TiO 2 and Ag NPs present in the nanofibers are non-toxic to the bone-like cells. However, results show that a higher concentration of Ag NPs (i.e., 0.07 M) is toxic to cells growing. Finally, all the results suggest that the nanofiber scaffolds have considerable scope for future bone tissue engineering materials.

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Preparation of aminated nanoporous nanofiber by solvent casting/porogen leaching technique and dye adsorption modeling

Cited by 69 publications

References 52 publications

Coordination Kinetics of Different Metal Ions with the Amidoximated Polyacrylonitrile Nanofibrous Membranes and Catalytic Behaviors of their Complexes

Coordination Kinetics of Different Metal Ions with the Amidoximated Polyacrylonitrile Nanofibrous Membranes and Catalytic Behaviors of their Complexes

Modified Electrospun Polymeric Nanofibers and Their Nanocomposites as Nanoadsorbents for Toxic Dye Removal from Contaminated Waters: A Review

Synthesis, characterization, and cell viability of bifunctional medical‐grade polyurethane nanofiber: Functionalization by bone inducing and bacteria ablating materials

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