Preparation and application of functionalized cellulose acetate/silica composite nanofibrous membrane via electrospinning for Cr(VI) ion removal from aqueous solution

Taha, A.; Wu, Yina; Wang, Hong Tao; Li, Fengting

doi:10.1016/j.jenvman.2012.05.031

Cited by 183 publications

(79 citation statements)

References 48 publications

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“…The functionalization of CA with -COOH, -SO 3 H and NH 2 offers an opportunity for the application of CA in heavy metal complexation [155][156][157][158]. Some nanofillers can be added to a cellulose acetate membrane to enhance the metal adsorption capacity [149,155,156].…”

Section: Cellulose Derivatives Cellulose Acetatementioning

confidence: 99%

“…With a large contact area the composite exhibited high toxicity to both gram-negative and gram-positive bacteria. Taha et al [156] functionalized a cellulose acetate/silica composite with NH 2 to enhance its affinity towards Cr(IV) ions. They used tetraethoxysilane (TEOS) as silica source, cellulose acetate as precursor and 3-ureidoptopyltriethoxysilane as a compatibilizer.…”

Section: Zinc Nanoparticlesmentioning

confidence: 99%

“…The de-adsorption of the metals is possible with an appropriate solvent such as ethylenedinitrilotetraacetic acid (EDTA). Cellulose acetate/ silica composites were tested for Cr(VI) adsorption [156]. In this case the CA/SiO 2 was functionalized with NH2 to enhance the adsorption of the resulting fibre membranes.…”

Section: Bioremediationmentioning

confidence: 99%

“…Most of the diseases in developing countries are caused by pathogenic organisms. There has been an escalation of research in incorporating silver nanoparticles in the electro-spun membrane to impart biocidal activity [156,239,240,243,244]. Even though there is still much controversy over the biocidal activity of the silver nanoparticles, electrospun nanofibres displayed enhanced antibacterial efficiency when the membranes contained silver.…”

Section: Biocidal Membranementioning

confidence: 99%

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A review on electrospun bio-based polymers for water treatment

Mokhena¹,

Jacobs²,

Luyt³

2015

Express Polym. Lett.

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Abstract. Over the past decades, electrospinning of biopolymers down to nanoscale garnered much interest to address most of the millennia issues related to water treatment. The fabrication of these nanostructured membranes added a new dimension to the current nanotechnologies where a wide range of materials can be processed to their nanosize. Electrospinning is a simple and versatile technique to fabricate unique nanostructured membranes with fascinating properties for a wide spectrum of applications such as filtration and others. These nanostructured membranes, fabricated by electrospinning, were found to be of a paramount importance because of their advanced inherited properties such as large surface-to-volume ratio, as well as tuneable porosity, stability, and high permeability. The extensive research conducted on these materials extended the success of electrospinning not only to bio-based polymer nanofibres, but to their hybrids and their derivatives. The technique also created avenues for advanced and massive production of nanofibres. This paper reviews the recent developments in the electrospinning technique. Electrospinning of biopolymers, their blends and functionalization using metals/metal oxides, and the potential applications of electrospun nanofibrous membranes in water filtration are discussed.

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Section: Cellulose Derivatives Cellulose Acetatementioning

confidence: 99%

Section: Zinc Nanoparticlesmentioning

confidence: 99%

Section: Bioremediationmentioning

confidence: 99%

Section: Biocidal Membranementioning

confidence: 99%

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A review on electrospun bio-based polymers for water treatment

Mokhena¹,

Jacobs²,

Luyt³

2015

Express Polym. Lett.

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“…Nishiyama et al [19] also prepared a chelated polyethylene porous hollow-fiber membrane containing an iminodiethanol (IDE) group whereas Yuan et al [20] successively applied electrospun metal oxide-TiO 2 nanofiber for elemental mercury removal from flue gas. Recently several researchers have utilized electrospun fibrous mat for ion removal [20][21][22][23][24][25][26]. The electrospun fibrous material is prepared by a simple method, namely electrostatic spinning technique.…”

Section: Introductionmentioning

confidence: 99%

Metal adsorption behavior of 2,4-dinitrophenyl hydrazine modified polyacrylonitrile nanofibers

Jitjaicham¹,

Kampalanonwat²,

Supaphol³

2013

Express Polym. Lett.

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Abstract. Electrospun polyacrylonitrile nanofiber mats (es-PAN nanofiber mats) were surface modified by 2,4-dinitrophenyl-hydrazine (2,4-DNPH) to yield the metal ion adsorption material (es-PAN-DNPH nanofiber mats) and were investigated their adsorption behaviors. Functional modification of the es-PAN nanofiber mats and conventional polyacrylonitrile fibers (c-PAN fibers) were prepared by using 4% (w/v) of 2,4-DNPH in 1,2-ethandiol at 110°C for 6 h to obtained c-PAN-DNPH fibers. The average diameter of the es-PAN-DNPH nanofiber mats was 0.25 !m, which was comparatively smaller than the es-PAN precursor. Their functional groups were confirmed by Fourier transform infrared spectroscopy (FT-IR) and their adsorption behaviors to trace Ag(I), Bi(III), Ga(III), and In(III) from aqueous solutions and were investigated by the induced couple plasma technique. The FT-IR spectra showed the existence of NN=C-NHNH-, O=C-NHNH-, and -NO 2 functional groups for metal complexes. The adsorption capacities of the obtained es-PAN-DNPH were 7.14 to 36.36% higher than those of c-PAN-DNPH fibers. All adsorption plots onto es-PAN-DNPH nanofiber mats and c-PAN-DNPH fibers followed the Langmuir isotherm and indicated monolayer adsorption characteristics.

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