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dc.contributor.author Chauke, VP
dc.contributor.author Maity, Arjun
dc.contributor.author Chetty, A
dc.date.accessioned 2016-02-23T08:38:56Z
dc.date.available 2016-02-23T08:38:56Z
dc.date.issued 2015-07
dc.identifier.citation Chauke, V.P, Maity, A and Chetty, A. 2015. High-performance towards removal of toxic hexavalent chromium from aqueous solution using graphene oxide-alpha cyclodextrin-polypyrrole nanocomposites. Journal of Molecular Liquids, vol. 211, pp 71-77 en_US
dc.identifier.issn 0167-7322
dc.identifier.uri http://ac.els-cdn.com/S0167732215301811/1-s2.0-S0167732215301811-main.pdf?_tid=d81b0a34-cc0b-11e5-ab40-00000aab0f02&acdnat=1454678874_07c7a33f64d06cb18d23688596ca1f2e
dc.identifier.uri http://hdl.handle.net/10204/8389
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0167732215301811
dc.identifier.uri https://doi.org/10.1016/j.molliq.2015.06.044
dc.description Copyright: 2016 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Journal of Molecular Liquids, vol. 211, pp 71-77 en_US
dc.description.abstract Graphene oxide (GO) was functionalized with alpha cyclodextrin (aCD) through a covalent bond to form GO-aCD nanocomposites (NC). GO-aCD NC was further modified with polypyrrole (PPY) to afford an advanced GO-aCD-PPY NC for the removal of highly toxic Cr(VI) from water. The prepared GO-aCD-PPY NCs were successfully characterised with AT-FTIR, FE-SEM, HR-TEM, BET and XRD techniques. Adsorption experiments were performed in batch mode to determine optimum conditions that include temperature, pH, concentration of Cr(VI) and contact time. It was deduced from the experiments that the adsorption of Cr(VI) by the GO-aCD-PPY NC is pH and temperature dependent, where optimum adsorption was achieved at pH 2 and it increased with increasing temperature. The adsorption kinetics followed the pseudo-second-order model and the adsorption isotherms fitted well to the Langmuir isotherm model with maximum adsorption capacities ranging from 606.06 to 666.67 mg/g. Effect of co-existing ions studies revealed that cations and anions had no significant effect on the adsorption of Cr(VI). Desorption studies also illustrated that the NC can be re-used up to 3 cycles. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;16178
dc.subject Graphene oxide en_US
dc.subject Nanocomposites en_US
dc.subject Polypyrrole en_US
dc.subject Cyclodextrin en_US
dc.subject Cr(VI) removal en_US
dc.title High-performance towards removal of toxic hexavalent chromium from aqueous solution using graphene oxide-alpha cyclodextrin-polypyrrole nanocomposites en_US
dc.type Article en_US


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