“Nanotraps” in porous electrospun fibers for effective removal of lead(<scp>ii</scp>) in water

Anitha, S.; Balusamy, Brabu; Çelebioğlu, Aslı; Uyar, Tamer

doi:10.1039/c5ta09166g

Cited by 39 publications

(24 citation statements)

References 74 publications

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“…received a great deal of attention owing to their high surface area, very light-weight, nano-porous nature, and flexibility in specific physical and chemical functionalization [13][14][15]. Thereby, electrospun fibers and their webs are very promising candidates for membranes/filters and environmental applications [16][17][18][19][20]. For example, electrospun webs were also used as immobilization matrix for living microorganism for remediation of waste water [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of living bacteria in electrospun cyclodextrin ultrathin fibers for bioremediation of heavy metals and reactive dye from wastewater

Keskin

Çelebioğlu

Sarioglu

et al. 2018

Colloids and Surfaces B: Biointerfaces

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Cyclodextrins (CD) are cyclic oligosaccharides produced from the enzymatic degradation of starch as a white powder form; on the other hand, they can be transformed into ultrathin electrospun fiber form by electrospinning technique. The electrospun cyclodextrin fibers (CD-F) can be quite attractive materials to encapsulate bacteria for bioremediation purposes. For instance, CD-F not only serve as a carrier matrix but also it serves as a feeding source for the encapsulated bacteria. In the present study, we demonstrate a facile approach by encapsulation of bacteria into CD-F matrix for wastewater treatment application. The natural and non-toxic properties of CD-F render a better bacterial viability for fibrous biocomposite. The encapsulated bacteria in CD-F exhibit cell viability for more than 7days at 4°C storage condition. Furthermore, we have tested the bioremediation capability of bacteria/CD-F biocomposite for the treatment of heavy metals (Nickel(II) and Chromium(VI)) and textile dye (Reactive Black 5, RB5). The bacteria/CD-F biocomposite has shown removal efficiency of Ni(II), Cr(VI) and RB5 as 70±0.2%, 58±1.4% and 82±0.8, respectively. As anticipated, the pollutants removal capabilities of the bacteria/CD-F was higher compare to free bacteria since bacteria can use CD as an extra carbon source which promotes their growth rate. This study demonstrates that CD-F are suitable platforms for the encapsulation of bacterial cells to develop novel biocomposites that have bioremediation capabilities for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Encapsulation of living bacteria in electrospun cyclodextrin ultrathin fibers for bioremediation of heavy metals and reactive dye from wastewater

Keskin

Çelebioğlu

Sarioglu

et al. 2018

Colloids and Surfaces B: Biointerfaces

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“…Nowadays, the continuous development of global industry and agriculture have caused aggravated pollution from heavy metals and organic dyes; these compounds affect human and animal health because of their complex composition, photolysis resistance, oxidation resistance, and unbiodegradable nature . The quick and efficient removal of toxic dyes and metal ions to wastewater discharge standards remains a challenge for scientific research personnel . Over the past few decades, a large number of adsorption techniques have been developed for the adsorption and enrichment of some metal ions (Pd, Cu, Cr, Hg, and Pb) and organic dyes; among these, amidoximated polyacrylonitrile (AOPAN) solution chelating nanofibers have been demonstrated to the most promising candidates because of their large specific surface area, high speed of exchange, short regeneration time, and easy elution properties …”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] The quick and efficient removal of toxic dyes and metal ions to wastewater discharge standards remains a challenge for scientific research personnel. [6][7][8][9] Over the past few decades, a large number of adsorption techniques have been developed for the adsorption and enrichment of some metal ions (Pd, Cu, Cr, Hg, and Pb) and organic dyes [10][11][12][13][14] ; among these, amidoximated polyacrylonitrile (AOPAN) solution chelating nanofibers have been demonstrated to the most promising candidates because of their large specific surface area, high speed of exchange, short regeneration time, and easy elution properties. [15][16][17][18][19][20][21][22][23] Now, most of the preparation work for amidoxime-based chelate nanofibers is done through chelating modification with hydroxylamine hydrochloride after the synthesis of polyacrylonitrile (PAN) nanofiber mats by an electrospinning method.…”

Section: Introductionmentioning

confidence: 99%

Preparation of amidoxime‐modified polyacrylonitrile nanofibrous adsorbents for the extraction of copper(II) and lead(II) ions and dye from aqueous media

Ren

Yan

Liu

et al. 2017

J of Applied Polymer Sci

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Amidoxime‐modified polyacrylonitrile nanofibrous films (AOPAN NFs) were prepared via an electrospinning technique. The traditional preparation methods for amidoximated polyacrylonitrile (AOPAN) solution were changed and improved. First, the PAN solution was modified by hydroxylamine hydrochloride to produce an AOPAN solution, and then, a small amount of inhibitor was added to the AOPAN solution for electrospinning. We found that the crosslinking of the AOPAN solution was inhibited by the addition of a small amount of inhibitor; at the same time, the storage time of the AOPAN solution was prolonged. In addition, the prepared AOPAN solution was electrospun into nanofibrous films, which could be used as excellent adsorption materials for Cu(II), Pb(II), and methyl orange (MO) after drying. The maximal adsorption capacities for Cu(II), Pb(II), and MO were 143.47, 178.57, and 68.07 mg/g, respectively. The adsorption capacities of the nanofibrous films were more than 50% that of the first adsorption after four recycling runs; this indicated the reusability of the nanofibrous films for water treatment. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45697.

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“…Hence, the additional functionalities of metal (Pd NC) and metal oxide (ZnO NP) NP can be introduced onto the nanofibrous mats via NH 2and -alkoxy/ hydroxyl features for catalytic reduction and photocatalytic applications in addition to the fluorescent feature. In our previous studies, we have shown that electrospun nanofibrous mats of cellulose acetate, 13 polycaprolactone, 14 polysulfone, 15 and Nylon 6,6 16 can be surface-functionalized with various nanostructures (e.g., gold nanoclusters, 13,14 ZnO 15,16 ) for applications such as heavy-metal removal, 13 sensing, 14 and photocatalysis. 15,16 It is also possible to surface-functionalize many other electrospun NF of polymers or polymeric composites.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional electrospun polymeric nanofibrous mats for catalytic reduction, photocatalysis and sensing

Arslan

Uyar

2017

Nanoscale

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Fabrication and decoration of flexible Nylon 6,6 polymeric nanofibrous mats for production of multifunctional electrospun material was accomplished via visible light-emitting surface-protected silicon quantum dots (Si QD), ZnO nanoparticles (ZnO NP) and Pd nanocubes (Pd NC). UV-range light was utilized for Si QD production and, after hydrolysis/condensation together with nucleation and growth reactions, amine-modified, fluorescent Si QD were obtained. Additionally, available molecular groups on the Si QD coated onto the polymeric nanofibrous mats provided further attachment of metal oxide and metal NP for various catalytic purposes. Analytical investigations showed that visible-light emission could be maintained on the Nylon 6,6 mats for trinitrotoluene (TNT) sensing. Also, due to consecutive NP decoration, multifunctional, polymeric, flexible nanofibrous mats were obtained. Experiments revealed that fabricated multifunctional mats could reduce molecules such as paranitrophenol effectively or decompose waste dyes such as methylene blue via photocatalytic experiments, and sense the pollutant TNT in aqueous solutions as an all-in-one concept.

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“Nanotraps” in porous electrospun fibers for effective removal of lead(ii) in water

Abstract: In this report, we demonstrated a synthetic strategy for the effective removal of Pb2+in water by creating stable “nanotraps” in electrospun porous cellulose acetate fibers encapsulated with dithiothreitol capped gold nanoclusters.

Cited by 39 publications

References 74 publications

Encapsulation of living bacteria in electrospun cyclodextrin ultrathin fibers for bioremediation of heavy metals and reactive dye from wastewater

Encapsulation of living bacteria in electrospun cyclodextrin ultrathin fibers for bioremediation of heavy metals and reactive dye from wastewater

Preparation of amidoxime‐modified polyacrylonitrile nanofibrous adsorbents for the extraction of copper(II) and lead(II) ions and dye from aqueous media

Multifunctional electrospun polymeric nanofibrous mats for catalytic reduction, photocatalysis and sensing

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