“Nanotraps” in porous electrospun fibers for effective removal of lead(II) in water
Author
Senthamizhan A.
Balusamy, B.
Celebioglu A.
Uyar, Tamer
Date
2016-02Source Title
Journal of Materials Chemistry A
Print ISSN
2050-7488
Publisher
Royal Society of Chemistry
Volume
4
Issue
7
Pages
2484 - 2493
Language
English
Type
ArticleItem Usage Stats
135
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130
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Abstract
Here, we have put in conscientious effort to demonstrate the careful design of binding sites in fibers and their stability for enhanced adsorption of metal ions, which has proven to be a challenging task until now. Dithiothreitol capped gold nanoclusters (AuNCs) are successfully encapsulated into a cavity in the form of pores in electrospun porous cellulose acetate fibers (pCAFs) and their assembly creates a "nanotrap" for effective capture of Pb2+. The enhanced immobilization capacity of AuNCs into the interiors of the fibers and their non-aggregated nature offer enhanced adsorption sites, thus reaching maximum extraction capacity up to 1587 mg g-1 for Pb2+. The remarkable finding from this approach has shown that the diffusion of Pb2+ into the interiors of the AuNC encapsulated porous cellulose acetate fiber (pCAF/AuNC) is in line with the penetration depth of AuNCs. The effectiveness of the pCAF/AuNC has been compared with that of the AuNC decorated non-porous cellulose acetate fibers (nCAF/AuNC). The findings have shown a remarkable improvement in the adsorption efficiency by increasing the availability and stability of adsorption sites in the pCAF/AuNC. We strongly believe that the proposed approach might provide a new insight into developing nanotraps to eliminate the usual limitations including denaturation of adsorbents on supported matrices. © The Royal Society of Chemistry 2016.
Keywords
AdsorptionBinding sites
Cellulose
Electrospinning
Fibers
Lead
Metal ions
Metals
Nanoclusters
Adsorption efficiency
Cellulose acetate fibers
Effective removals
Electrospun fibers
Enhanced adsorptions
Enhanced immobilizations
Extraction capacity
Gold nanocluster
Lead removal (water treatment)
Cellulose Acetate
Fibers
Lead
Porous Materials
Water Treatment
Permalink
http://hdl.handle.net/11693/36685Published Version (Please cite this version)
https://doi.org/10.1039/c5ta09166gCollections
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