Activated carbon nanofiber produced from electrospun PAN nanofiber as a solid phase extraction sorbent for the preconcentration of organophosphorus pesticides

Maddah, Bozorgmehr; Soltaninezhad, M; Adib, Korosh; Hasanzadeh, Mahdi

doi:10.1080/01496395.2016.1221432

Cited by 30 publications

(13 citation statements)

References 24 publications

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“…While a large number of biopolymers can be electrospun from water [6,7], only few waterresistant polymers can be spun from low-toxic solvents such as dimethyl sulfoxide (DMSO) [8]. Th is is one of the reasons why polyacrylonitrile (PAN) is of large interest in electrospinning, apart from its usability as a precursor for carbon nanofi bres [9][10][11]. Preliminary tests in our group showed that animal cells do not grow well on pure PAN nanofi brous mats although serum was added to the culture medium.…”

Section: Introductionmentioning

confidence: 99%

Sterilization of PAN/Gelatine Nanofibrous Mats for Cell Growth

Wehlage¹,

Blattner²,

Sabantina³

et al. 2019

TEK

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Nanofi brous mats can be used as a substrate for eukaryotic cell growth in biotechnology, tissue engineering, etc. Several adherent cells (e.g. human fi broblasts) have been shown to grow well on fi ne fi bres. For most applications, it is necessary to sterilize nanofi brous mats before adding the cells. Another possibility would be the addition of antibiotics and antimycotics to the cell culture medium to prevent microbial infection. However, antibiotics are disadvantageous since they might promote the growth of resistant bacteria in possible future medical applications of nanofi brous mats. Possible sterilization techniques include autoclaving, UV-sterilization, ozone treatment, heat sterilization and other techniques which usually necessitate more expensive equipment, such as gamma irradiation. Systematic examinations of the infl uence of diff erent sterilization techniques on the cell growth on nanofi brous mats have not yet been reported in the literature. Here, we report on the fi rst experimental investigations of the eff ect of sterilization with diff erent methods on the properties of polyacrylonitrile (PAN)/gelatine nanofi brous mats, and the resulting growth and adhesion of Chinese hamster ovary cells. While all techniques under investigation yielded sterile nanofibrous mats, autoclaving and heat sterilization change the PAN/gelatine fi bre morphology. Ozone, on the other hand, modifi es the pH value of the culture medium and partly impedes cell adhesion. UV sterilization also suggests a chemical modifi cation of the nanofi brous mat. Unexpectedly, heat sterilization resulted in the highest amount of adherent Chinese hamster ovary cells grown on PAN/gelatine nanofi brous mats in spite of gelatine melting.

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Section: Introductionmentioning

confidence: 99%

Sterilization of PAN/Gelatine Nanofibrous Mats for Cell Growth

Wehlage¹,

Blattner²,

Sabantina³

et al. 2019

TEK

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“…The adsorption of antibiotics is one of the preferred approaches to confiscate organic pollutants from water owing to the desirable qualities: ease of operation, low energy cost, and environmental friendliness [19]. Recently, the preparation of polymeric adsorbents for the adsorption of organics has been performed by using the electrospinning method, which is advantageous because of its low cost and simplicity [20]. Electrospinning has become popular for the preparation of nanofibers with attractive electronic properties and large surface-to-volume ratios [20].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the preparation of polymeric adsorbents for the adsorption of organics has been performed by using the electrospinning method, which is advantageous because of its low cost and simplicity [20]. Electrospinning has become popular for the preparation of nanofibers with attractive electronic properties and large surface-to-volume ratios [20]. Furthermore, the use of electrospun nanofibers has been employed in different fields, including the removal of inorganic and organic pollutants in water [21].…”

Section: Introductionmentioning

confidence: 99%

Application of activated carbon-decorated polyacrylonitrile nanofibers as an adsorbent in dispersive solid-phase extraction of fluoroquinolones from wastewater

Dimpe

Nomngongo

2019

Journal of Pharmaceutical Analysis

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A cheap and simple sample preparation method, consisting of a dispersive solid-phase method and an adsorbent, activated carbon decorated PAN nanofibers, was employed and used for the extraction of antibiotics (ciprofloxacin, danofloxacin, and enrofloxacin) in wastewater. Electrospun PAN nanofibers that were decorated with activated carbon produced from waste tires were used as the solid phase and the antibiotics analyzed by using high-performance liquid chromatography. Parameters such as pH, mass of adsorbent (MA), extraction volume (EV), and extraction time (ET) were optimized owing to their potential effect on the extraction of antibiotics from water. The recovery of all antibiotics was satisfactory, in the range of 90%–99%. The limits of detection and quantification were 0.05, 0.11, 0.20, and 0.53, 1.21, 2.17 µg/L, respectively. The precision was determined from the repeatability and reproducibility and expressed as the intra-day ( n = 20) and inter-day ( n = 5) precision. The intra-day and inter-day precision was reported in terms of the percentage relative standard deviation, which was 3% and 4%, respectively. The adsorption capacity of the activated carbon-decorated PAN nanofibers was satisfactory, and the reusability of the adsorbent was impressive when reused ten times. The accuracy of the dispersive solid phase extraction (DSPE) was validated by spike recovery tests; the results proved the reliability and efficiency of adsorbing antibiotics from wastewater. Finally, the proposed method was applied to wastewater samples collected from a wastewater treatment plant, which included influent, secondary, and effluent wastewater.

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“…Polyacrylonitrile (PAN) is a material that can be dissolved in dimethyl sulfoxide (DMSO), a solvent that must be handled with care, but does not cause problems in biological or medical applications. PAN is thus a typical material used in electrospinning [1,2]. In most cases, it is used in a two-step process for the creation of carbon nano bres [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Needleless Electrospinning of PAN Nanofibre Mats

Grothe¹,

Wehlage²,

Böhm³

et al. 2017

TEK

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Polyacrylonitrile (PAN) is one of the few waterproof polymers that can be spun from relatively safe solvents, facilitating the use of PAN nanofi bre mats in diverse medical and biological applications, such as tissue engineering and cell growth promotion. PAN, on the other hand, is signifi cantly harder to use in electrospinning than polyethylene glycol and other water-soluble biopolymers. In our recent study, we thus varied spinning and material parameters for PAN dissolved in dimethyl sulfoxide (DMSO) and studied spinnability, as well as the resulting nanofi bre mat morphologies, using a "Nanospider Lab" needleless electrospinning machine. The results were examined using confocal laser scanning microscopy and atomic force microscopy. On the one hand, the images show that the relative humidity in the chamber plays a signifi cant role: excessively high values may cause undesired fi bre connections between oppositely charged parts of the Nanospider, creating cotton-candy-like structures that impede the free fl ow of fi bres to the substrate and thus the creation of the desired nanofi bre mat. On the other hand, the PAN concentration in the spinning solution is crucial: similar to the electrospinning of other (bio-)polymers, no fi bres are formed if the polymer concentration is too low. Third, the PAN material itself aff ects the nanofi bre creation process, illustrating that not every PAN is ideal for electrospinning.

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Activated carbon nanofiber produced from electrospun PAN nanofiber as a solid phase extraction sorbent for the preconcentration of organophosphorus pesticides

Cited by 30 publications

References 24 publications

Sterilization of PAN/Gelatine Nanofibrous Mats for Cell Growth

Sterilization of PAN/Gelatine Nanofibrous Mats for Cell Growth

Application of activated carbon-decorated polyacrylonitrile nanofibers as an adsorbent in dispersive solid-phase extraction of fluoroquinolones from wastewater

Needleless Electrospinning of PAN Nanofibre Mats

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