Graphene Oxide–Chitosan Composite Material
for Treatment of a Model Dye Effluent
Posted on 2018-10-11 - 11:34
Graphene
oxide (GO) was cross-linked with chitosan to yield a composite
(GO-LCTS) with variable morphology, enhanced surface area, and notably
high methylene blue (MB) adsorption capacity. The materials were structurally
characterized using thermogravimetric analysis and spectroscopic methods
(X-ray diffraction, Fourier transform infrared spectroscopy, Raman
spectroscopy, and 13C solid-state NMR) to support that
cross-linking occurs between the amine groups of chitosan and the
−COOH groups of GO. Equilibrium swelling studies provide support
for the enhanced structural stability of GO-cross-linked materials
over the synthetic precursors. Scanning electron microscopy studies
reveal the enhanced surface area and variable morphology of the cross-linked
GO materials, along with equilibrium and kinetic uptake results with
MB dye in aqueous media, revealing greater uptake of GO-LCTS composites
over pristine GO. The monolayer uptake capacity (Qm; mg g–1) with MB reveals twofold variation
for Qm, where GO-LCTS (402.6 mg g–1) > GO (286.9 mg g–1). The kinetic
uptake profiles of MB follow a pseudo-second-order trend, where the
GO composite shows more rapid uptake over GO. This study reveals that
the sorption properties of GO are markedly improved upon formation
of a GO–chitosan composite. The facile cross-linking strategy
of GO reveals that its physicochemical properties are tunable and
versatile for a wider field of application for contaminant removal,
especially over multiple adsorption–desorption cycles when
compared against pristine GO in its highly dispersed nanoparticle
form.
CITE THIS COLLECTION
DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
Sabzevari, Mina; Cree, Duncan E.; Wilson, Lee D. (2018). Graphene Oxide–Chitosan Composite Material
for Treatment of a Model Dye Effluent. ACS Publications. Collection. https://doi.org/10.1021/acsomega.8b01871
or
Select your citation style and then place your mouse over the citation text to select it.
SHARE
Usage metrics
Read the peer-reviewed publication
AUTHORS (3)
MS
Mina Sabzevari
DC
Duncan E. Cree
LW
Lee D. Wilson