Graphene oxide/Fe3O4/SO3H nanohybrid: a new adsorbent for adsorption and reduction of Cr(vi) from aqueous solutions

Abdolhamid Alizadeh; Gisya Abdi; Mohammad Mehdi Khodaei; Muthupandian Ashokkumar; Jhaleh Amirian

doi:10.1039/c7ra01536d

Graphene oxide/Fe₃O₄/SO₃H nanohybrid: a new adsorbent for adsorption and reduction of Cr(vi) from aqueous solutions

Abdolhamid Alizadeh (Corresponding Author)
, Gisya Abdi
, Mohammad Mehdi Khodaei
, Muthupandian Ashokkumar
, Jhaleh Amirian

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

Abstract

A sulfonated magnetic graphene oxide (SMGO) hybrid was successfully synthesized via the nucleophilic substitution reaction and characterized. The removal of chromate by SMGO was investigated. The effects of contact time, initial pH of the solution, and initial chromate concentration on the removal efficiency were investigated. The optimal experimental conditions for enhanced chromate removal were found to be a contact time of 60 min at an initial solution pH of 3. The observed data were fitted with Lagergren pseudo-second-order kinetic model, indicating that chromate adsorption on SMGO was a chemical interaction in nature. The Langmuir model was also used to describe the adsorption processes and the adsorption capacity was found to be 222.22 mg g⁻¹. Thermodynamic studies (ΔG < 0, ΔH > 0, ΔS > 0) revealed that the adsorption process was exothermic and spontaneous. SMGO has potential to be applied several times after desorption in wastewater treatment.

Original language	English
Pages (from-to)	14876-14887
Number of pages	12
Journal	RSC Advances
Volume	7
Issue number	24
DOIs	https://doi.org/10.1039/c7ra01536d
Publication status	Published - 2017
Externally published	Yes

Field of Science*

1.5 Earth and related Environmental sciences
1.4 Chemical sciences
2.8 Environmental biotechnology

Publication Type*

1.1. Scientific article indexed in Web of Science and/or Scopus database

Access to Document

10.1039/c7ra01536d

Cite this

@article{6abb6a0b496d42039202e9b7727051bd,

title = "Graphene oxide/Fe3O4/SO3H nanohybrid: a new adsorbent for adsorption and reduction of Cr(vi) from aqueous solutions",

abstract = "A sulfonated magnetic graphene oxide (SMGO) hybrid was successfully synthesized via the nucleophilic substitution reaction and characterized. The removal of chromate by SMGO was investigated. The effects of contact time, initial pH of the solution, and initial chromate concentration on the removal efficiency were investigated. The optimal experimental conditions for enhanced chromate removal were found to be a contact time of 60 min at an initial solution pH of 3. The observed data were fitted with Lagergren pseudo-second-order kinetic model, indicating that chromate adsorption on SMGO was a chemical interaction in nature. The Langmuir model was also used to describe the adsorption processes and the adsorption capacity was found to be 222.22 mg g−1. Thermodynamic studies (ΔG < 0, ΔH > 0, ΔS > 0) revealed that the adsorption process was exothermic and spontaneous. SMGO has potential to be applied several times after desorption in wastewater treatment.",

author = "Abdolhamid Alizadeh and Gisya Abdi and Khodaei, \{Mohammad Mehdi\} and Muthupandian Ashokkumar and Jhaleh Amirian",

note = "Funding Information: The authors are grateful to Razi University and Melbourne University for their financial support for accomplishment of the work and providing necessary facilities. G. Abdi is also thankful to the Iran Nanotechnology Initiative Council (INIC) for their partial support on this project. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c7ra01536d",

language = "English",

volume = "7",

pages = "14876--14887",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "24",

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TY - JOUR

T1 - Graphene oxide/Fe3O4/SO3H nanohybrid

T2 - a new adsorbent for adsorption and reduction of Cr(vi) from aqueous solutions

AU - Alizadeh, Abdolhamid

AU - Abdi, Gisya

AU - Khodaei, Mohammad Mehdi

AU - Ashokkumar, Muthupandian

AU - Amirian, Jhaleh

N1 - Funding Information: The authors are grateful to Razi University and Melbourne University for their financial support for accomplishment of the work and providing necessary facilities. G. Abdi is also thankful to the Iran Nanotechnology Initiative Council (INIC) for their partial support on this project. Publisher Copyright: © The Royal Society of Chemistry.

PY - 2017

Y1 - 2017

N2 - A sulfonated magnetic graphene oxide (SMGO) hybrid was successfully synthesized via the nucleophilic substitution reaction and characterized. The removal of chromate by SMGO was investigated. The effects of contact time, initial pH of the solution, and initial chromate concentration on the removal efficiency were investigated. The optimal experimental conditions for enhanced chromate removal were found to be a contact time of 60 min at an initial solution pH of 3. The observed data were fitted with Lagergren pseudo-second-order kinetic model, indicating that chromate adsorption on SMGO was a chemical interaction in nature. The Langmuir model was also used to describe the adsorption processes and the adsorption capacity was found to be 222.22 mg g−1. Thermodynamic studies (ΔG < 0, ΔH > 0, ΔS > 0) revealed that the adsorption process was exothermic and spontaneous. SMGO has potential to be applied several times after desorption in wastewater treatment.

AB - A sulfonated magnetic graphene oxide (SMGO) hybrid was successfully synthesized via the nucleophilic substitution reaction and characterized. The removal of chromate by SMGO was investigated. The effects of contact time, initial pH of the solution, and initial chromate concentration on the removal efficiency were investigated. The optimal experimental conditions for enhanced chromate removal were found to be a contact time of 60 min at an initial solution pH of 3. The observed data were fitted with Lagergren pseudo-second-order kinetic model, indicating that chromate adsorption on SMGO was a chemical interaction in nature. The Langmuir model was also used to describe the adsorption processes and the adsorption capacity was found to be 222.22 mg g−1. Thermodynamic studies (ΔG < 0, ΔH > 0, ΔS > 0) revealed that the adsorption process was exothermic and spontaneous. SMGO has potential to be applied several times after desorption in wastewater treatment.

UR - https://www.scopus.com/pages/publications/85014764873

U2 - 10.1039/c7ra01536d

DO - 10.1039/c7ra01536d

M3 - Article

AN - SCOPUS:85014764873

SN - 2046-2069

VL - 7

SP - 14876

EP - 14887

JO - RSC Advances

JF - RSC Advances

IS - 24

ER -