Magnetic alginate-Fe 3 O 4 hydrogel fiber showing capability for adsorption/separation of Ciprofloxacin hydrochloride in aqueous solution Achyut Konwar, a Ansumi Gogoi, a and Devasish Chowdhury a * Electronic Supplementary Information Figure 1S: Photographic images showing magnetic alginate- Fe 3 O 4 hydrogel fiber at different stages while attracted towards a magnet. Table 1 S : d- spacing and 2θ values of MNPs and magnetic alginate- Fe 3 O 4 hydrogel fibers. MNPs AMHF1 AMHF2 AMHF3 AMHFE d-spacing 2θ d-spacing 2θ d-spacing 2θ d-spacing 2θ d-spacing 2θ 2.923 2.508 2.082 1.690 1.606 1.475 30.5 35.7 43.4 54.1 57.3 62.9 2.966 2.531 2.095 - 1.613 1.484 30.1 35.4 43.1 - 57.0 62.5 2.966 2.527 2.097 1.710 1.615 1.484 30.1 35.4 43.1 53.5 59.9 62.5 2.966 2.535 2.097 - 1.613 1.483 30.1 35.4 43.1 - 57.0 62.6 - 2.531 - - 1.613 - - 35.43 - - 57.0 - Electronic Supplementary Material (ESI) for RSC Advances. This journal is © The Royal Society of Chemistry 2015
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Magnetic alginate-Fe3O4 hydrogel fiber showing capability for adsorption/separation of Ciprofloxacin hydrochloride in aqueous solution
Achyut Konwar,a Ansumi Gogoi,a and Devasish Chowdhurya*
Electronic Supplementary Information
Figure 1S: Photographic images showing magnetic alginate- Fe3O4 hydrogel fiber at different stages while attracted towards a magnet.
Table 1 S : d- spacing and 2θ values of MNPs and magnetic alginate- Fe3O4 hydrogel fibers.
MNPs AMHF1 AMHF2 AMHF3 AMHFE d-spacing 2θ d-spacing 2θ d-spacing 2θ d-spacing 2θ d-spacing 2θ
2.923 2.5082.0821.6901.6061.475
30.535.743.454.157.362.9
2.9662.5312.095 -1.6131.484
30.135.443.1 -57.062.5
2.9662.5272.0971.7101.6151.484
30.135.443.153.559.962.5
2.9662.5352.097 -1.6131.483
30.135.443.1 -57.062.6
-2.531 - -1.613 -
-35.43 - -57.0 -
Electronic Supplementary Material (ESI) for RSC Advances.This journal is © The Royal Society of Chemistry 2015
20 30 40 50 60 70
Inte
nsity
(a.u
.)
2
2.923
2.508
2.082
1.690
1.6061.475
Figure 2S: XRD spectra of iron oxide nanoparticles.
Figure 3S : SEM image of magnetic nanoparticles.
Table 2S : Comparison of adsorption efficiency depending upon the amount of adsorbent used at pH ~7, CH concentration 10mgL-1, (for 24 hrs)
.
Adsorption capability (µg/gm)
Percent adsorption (%)
Amount of absorbent used gm/10ml
AMHF3 AMHFE AMHF3 AMHFE 0.2 218 325 37 55 0.1 423 555 36 48 0.05 596 980 25.5 42
200 250 300 350 4000.00.10.20.30.40.50.60.7
Abs
Wavelength (nm)
CH CH-MNP
Figure 4S : Adsorption of Ciprofloxacin hydrochloride by MNPs.
Table 3S: Adsorption capacities of control (i.e. MNPs) and different alginate hydrogel fiber samples for CH concentration 10mgL-1 at pH~7.
Sample Name Adsorption capacity (µg/g)
MNPs AHF AMHF1 AMHF2 AMHF3 AMHFE
12258 Negligible 153 176 423 555
Table 4S: Reusability of magnetic alginate- Fe3O4 fibers at pH~7, CH solution 10mgL-1(for 24 hrs).
Percent adsorptionSample name
1st time use 2nd time use 3rd time useAMHF3 36 54 53
AMHFE 48 55 50
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