Beta-Cyclodextrin capped graphene-magnetite nanocomposite for selective adsorption of Bisphenol-A.
IR@CFTRI: CSIR-Central Food Technological Research Institute, Mysore
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| Relation |
http://ir.cftri.com/12775/
http://dx.doi.org/10.1016/j.carbpol.2017.03.045 |
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| Title |
Beta-Cyclodextrin capped graphene-magnetite nanocomposite for selective adsorption of Bisphenol-A.
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| Creator |
Ragavan, K. V.
Rastogi, N. K. |
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| Subject |
17 Toxicology
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| Description |
Beta-cyclodextrin capped Graphene-magnetite (G-Fe3O4-BCD) nanocomposite was synthesized byethylenediamine conjugation and used as an adsorbent for selective removal of Bisphenol-A (BPA) inwater. Characterization of nanocomposite revealed BCD conjugated to Fe3O4nanoparticles (30–40 nm)embedded on graphene. Adsorption process followed Langmuir model and pseudo second order kinet-ics with an adsorption capacity of 59.6 mg/g. It was found to be highly favourable physisorption andendothermic process as indicated by �G◦(−3.36 kJ/mol) and �H◦(2.08 kJ/mol) values at ambient tem-peratures. The nanocomposite was highly specific towards BPA compared to its analogs, largely drivenby host-guest interaction between BCD and BPA. Nanocomposite had a high magnetization of 97 emu/gwith superparamagnetic property at room temperature which helps in faster separation using an externalmagnetic field. Nanocomposite can be regenerated with methanol and can be reused without much lossin adsorption efficiency (<10%) after 6 cycles. It has huge potential and application in selective adsorptionof target molecules.
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| Date |
2017
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| Type |
Article
PeerReviewed |
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| Format |
pdf
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| Language |
en
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| Identifier |
http://ir.cftri.com/12775/1/Carbohydrate%20Polymers%20168%20%282017%29%20129%E2%80%93137.pdf
Ragavan, K. V. and Rastogi, N. K. (2017) Beta-Cyclodextrin capped graphene-magnetite nanocomposite for selective adsorption of Bisphenol-A. Carbohydrate Polymers, 168. pp. 129-137. |
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