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'Nanotraps' in porous electrospun fibers for effective removal of lead(II) in water
- Source :
- Journal of Materials Chemistry A
- Publication Year :
- 2016
- Publisher :
- Royal Society of Chemistry, 2016.
-
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.
- Subjects :
- Lead removal (water treatment)
Materials science
Diffusion
Metal ions in aqueous solution
Binding sites
Effective removals
Nanotechnology
02 engineering and technology
010402 general chemistry
01 natural sciences
Nanoclusters
Gold nanocluster
chemistry.chemical_compound
Adsorption efficiency
Adsorption
General Materials Science
Denaturation (biochemistry)
Fiber
Metal ions
Porosity
Cellulose
Enhanced immobilizations
Cellulose Acetate
Electrospinning
Electrospun fibers
Renewable Energy, Sustainability and the Environment
Porous Materials
General Chemistry
021001 nanoscience & nanotechnology
Cellulose acetate
0104 chemical sciences
Enhanced adsorptions
Fibers
Extraction capacity
Cellulose acetate fibers
chemistry
Lead
Metals
Water Treatment
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Chemistry A
- Accession number :
- edsair.doi.dedup.....773f7be24ec08e958c45e339f0aa8393