Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions

Yang Xiuzhen, Zhou Tengzhi, Bozhi Ren, Andrew Hursthouse, Yuezhou Zhang

Research output: Contribution to journalArticle

Abstract

After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g−1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.
Original languageEnglish
Article number10717
Number of pages16
JournalScientific Reports
Volume8
DOIs
Publication statusPublished - 16 Jul 2018

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Sodium alginate
Graphite
alginate
Hydrogel
Hydrogels
Oxides
Graphene
aqueous solution
sodium
oxide
adsorption
Adsorption
Composite materials
alginic acid
removal
Adsorption isotherms
Desorption
transmission electron microscopy
Metals
desorption

Keywords

  • Alginate
  • Graphene oxide
  • Mn removal
  • water pollution

Cite this

@article{5064f56df3584a328c438fe88ca17108,
title = "Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions",
abstract = "After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g−1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.",
keywords = "Alginate, Graphene oxide, Mn removal, water pollution",
author = "Yang Xiuzhen and Zhou Tengzhi and Bozhi Ren and Andrew Hursthouse and Yuezhou Zhang",
year = "2018",
month = "7",
day = "16",
doi = "10.1038/s41598-018-29133-y",
language = "English",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

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Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions. / Xiuzhen, Yang; Tengzhi, Zhou; Ren, Bozhi; Hursthouse, Andrew; Zhang, Yuezhou.

In: Scientific Reports, Vol. 8, 10717, 16.07.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions

AU - Xiuzhen, Yang

AU - Tengzhi, Zhou

AU - Ren, Bozhi

AU - Hursthouse, Andrew

AU - Zhang, Yuezhou

PY - 2018/7/16

Y1 - 2018/7/16

N2 - After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g−1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.

AB - After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g−1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.

KW - Alginate

KW - Graphene oxide

KW - Mn removal

KW - water pollution

U2 - 10.1038/s41598-018-29133-y

DO - 10.1038/s41598-018-29133-y

M3 - Article

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 10717

ER -