Preparation of a novel graphene oxide/Fe-Mn composite and its application for aqueous Hg(II) removal.

Tang, J; Huang, Y; Gong, Y; Lyu, H; Wang, Q; Ma, J

Preparation of a novel graphene oxide/Fe-Mn composite and its application for aqueous Hg(II) removal.

Tang, J Huang, Y Gong, Y Lyu, H Wang, Q

Ma, J

Permalink

Publisher:: ELSEVIER SCIENCE BV
Publication Type:: Journal Article
Citation:: J Hazard Mater, 2016, 316, pp. 151-158
Issue Date:: 2016-10-05

Closed Access

	Filename	Description	Size
	1-s2.0-S0304389416304599-main.pdf	Published version	1.94 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Tang, J
dc.contributor.author	Huang, Y
dc.contributor.author	Gong, Y
dc.contributor.author	Lyu, H
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Ma, J
dc.date.accessioned	2022-08-03T03:18:15Z
dc.date.available	2016-05-09
dc.date.available	2022-08-03T03:18:15Z
dc.date.issued	2016-10-05
dc.identifier.citation	J Hazard Mater, 2016, 316, pp. 151-158
dc.identifier.issn	0304-3894
dc.identifier.issn	1873-3336
dc.identifier.uri	http://hdl.handle.net/10453/159532
dc.description.abstract	A novel graphene oxide/Fe-Mn (GO/Fe-Mn) composite was synthesized (molar ratio of Fe/Mn=3/1 and mass ratio of Fe/GO=1/7.5) and investigated for the sorption characteristics and mechanisms of aqueous mercury (Hg(2+)) as well as the biological effects to wheat and rice. Characterization tests showed that Fe-Mn oxides were impregnated onto GO sheets in an amorphous form through oxygen-containing functional groups (i.e., CO, epoxy COC, carboxyl OCO, and CO) and π-π interactions. GO/Fe-Mn possessed large surface area, surface enhanced Raman scattering with more sp(3) defects, and greater thermal stability than GO. XPS analysis revealed that Fe2O3, FeOOH, MnO2, MnOOH, and MnO were the dominant metal oxides in GO/Fe-Mn. Pseudo-second-order kinetic model and Sips isotherm model fitted well with the sorption kinetic and isotherm data. The maximum sorption capacity for mercury was 32.9mg/g. Ligand exchange and surface complexation were the dominant mechanisms for mercury removal. GO/Fe-Mn greatly reduced the bioavailability of mercury to wheat and rice, even promoted the seedling growth. This work suggests that GO/Fe-Mn can be used as an effective and environmental-friendly adsorbent in heavy metal remediation.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER SCIENCE BV
dc.relation.ispartof	J Hazard Mater
dc.relation.isbasedon	10.1016/j.jhazmat.2016.05.028
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 05 Environmental Sciences, 09 Engineering
dc.subject.classification	Strategic, Defence & Security Studies
dc.title	Preparation of a novel graphene oxide/Fe-Mn composite and its application for aqueous Hg(II) removal.
dc.type	Journal Article
utslib.citation.volume	316
utslib.location.activity	Netherlands
utslib.for	03 Chemical Sciences
utslib.for	05 Environmental Sciences
utslib.for	09 Engineering
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	closed_access	*
dc.date.updated	2022-08-03T03:18:13Z
pubs.publication-status	Published
pubs.volume	316

Abstract:

A novel graphene oxide/Fe-Mn (GO/Fe-Mn) composite was synthesized (molar ratio of Fe/Mn=3/1 and mass ratio of Fe/GO=1/7.5) and investigated for the sorption characteristics and mechanisms of aqueous mercury (Hg(2+)) as well as the biological effects to wheat and rice. Characterization tests showed that Fe-Mn oxides were impregnated onto GO sheets in an amorphous form through oxygen-containing functional groups (i.e., CO, epoxy COC, carboxyl OCO, and CO) and π-π interactions. GO/Fe-Mn possessed large surface area, surface enhanced Raman scattering with more sp(3) defects, and greater thermal stability than GO. XPS analysis revealed that Fe2O3, FeOOH, MnO2, MnOOH, and MnO were the dominant metal oxides in GO/Fe-Mn. Pseudo-second-order kinetic model and Sips isotherm model fitted well with the sorption kinetic and isotherm data. The maximum sorption capacity for mercury was 32.9mg/g. Ligand exchange and surface complexation were the dominant mechanisms for mercury removal. GO/Fe-Mn greatly reduced the bioavailability of mercury to wheat and rice, even promoted the seedling growth. This work suggests that GO/Fe-Mn can be used as an effective and environmental-friendly adsorbent in heavy metal remediation.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/159532