Fabrication of hyperbranched polyamine functionalized graphene for high-efficiency removal of Pb(II) and methylene blue

Hu, L; Yang, Z; Cui, L; Li, Y; Ngo, HH; Wang, Y; Wei, Q; Ma, H; Yan, L; Du, B

Fabrication of hyperbranched polyamine functionalized graphene for high-efficiency removal of Pb(II) and methylene blue

Hu, L Yang, Z Cui, L Li, Y Ngo, HH

Wang, Y Wei, Q Ma, H Yan, L Du, B

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Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2016, 287 pp. 545 - 556
Issue Date:: 2016-03-01

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Field	Value	Language
dc.contributor.author	Hu, L	en_US
dc.contributor.author	Yang, Z	en_US
dc.contributor.author	Cui, L	en_US
dc.contributor.author	Li, Y	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Wang, Y	en_US
dc.contributor.author	Wei, Q	en_US
dc.contributor.author	Ma, H	en_US
dc.contributor.author	Yan, L	en_US
dc.contributor.author	Du, B	en_US
dc.date.available	2020-05-25T19:02:29Z
dc.date.issued	2016-03-01	en_US
dc.identifier.citation	Chemical Engineering Journal, 2016, 287 pp. 545 - 556	en_US
dc.identifier.issn	1385-8947	en_US
dc.identifier.uri	http://hdl.handle.net/10453/41154
dc.description.abstract	© 2015 Elsevier B.V. Multifunctional hyperbranched polyamine modified graphene oxide (HPA-GO) was successfully prepared and characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), zeta potential and scanning electron microscope (SEM) analyses. HPA-GO exhibited excellent adsorption performance for the removal of a heavy metal (Pb(II)) and a dye (methylene blue (MB)). The equilibrium adsorption capacity was 819.7 mg g-1 for Pb(II) and 740.7 mg g-1 for MB under the optimal conditions. The pseudo-second order equation and the Langmuir model exhibited good correlation with the adsorption kinetic and isotherm data, respectively, for these two pollutants. The thermodynamic results (ΔG<0, ΔH>0, ΔS>0) implied that the adsorption process of Pb(II) and MB was feasible, endothermic and spontaneous in nature. A possible adsorption mechanism has been proposed where chelation and electrostatic attraction dominated the adsorption of Pb(II) and π-π stacking interactions and electrostatic attraction dominated the adsorption of MB. In addition, the excellent reproducibility endowed HPA-GO with the potential for application in water treatment.	en_US
dc.relation.ispartof	Chemical Engineering Journal	en_US
dc.relation.isbasedon	10.1016/j.cej.2015.11.059	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Fabrication of hyperbranched polyamine functionalized graphene for high-efficiency removal of Pb(II) and methylene blue	en_US
dc.type	Journal Article
utslib.citation.volume	287	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	287	en_US

Abstract:

© 2015 Elsevier B.V. Multifunctional hyperbranched polyamine modified graphene oxide (HPA-GO) was successfully prepared and characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), zeta potential and scanning electron microscope (SEM) analyses. HPA-GO exhibited excellent adsorption performance for the removal of a heavy metal (Pb(II)) and a dye (methylene blue (MB)). The equilibrium adsorption capacity was 819.7 mg g-1 for Pb(II) and 740.7 mg g-1 for MB under the optimal conditions. The pseudo-second order equation and the Langmuir model exhibited good correlation with the adsorption kinetic and isotherm data, respectively, for these two pollutants. The thermodynamic results (ΔG<0, ΔH>0, ΔS>0) implied that the adsorption process of Pb(II) and MB was feasible, endothermic and spontaneous in nature. A possible adsorption mechanism has been proposed where chelation and electrostatic attraction dominated the adsorption of Pb(II) and π-π stacking interactions and electrostatic attraction dominated the adsorption of MB. In addition, the excellent reproducibility endowed HPA-GO with the potential for application in water treatment.

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http://hdl.handle.net/10453/41154