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Beta-Cyclodextrin capped graphene-magnetite nanocomposite for selective adsorption of Bisphenol-A.

IR@CSIR-CFTRI

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Relation http://ir.cftri.com/12775/
http://dx.doi.org/10.1016/j.carbpol.2017.03.045
 
Title Beta-Cyclodextrin capped graphene-magnetite nanocomposite for selective adsorption of Bisphenol-A.
 
Creator Ragavan, K. V.
Rastogi, N. K.
 
Subject 17 Toxicology
 
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 (
 
Date 2017
 
Type Article
PeerReviewed
 
Format pdf
 
Language en
 
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.