A new efficient adsorbent in the preconcentration studies of
the Cr(III) and Fe(III) ions
| Helan Zeyad Sami
| Mehmet Tümer
Department of Chemistry,
Kahramanmaraş Sütçü Imam University,
Kahramanmaraş 46100, Turkey
Department of Bioengineering and
Sciences, Kahramanmaraş Sütçü Imam
University, Kahramanmaraş 46100,
Muharrem Karabörk, Department of
Chemistry, Kahramanmaraş Sütçü Imam
University, Kahramanmaraş 46100,
In this study, the imine‐graphene hybrid material (HM) was used as an
adsorbent for removal of Fe(III) and Cr(III) metal ions from the drinking waters.
The adsorbent material (HM) was prepared at three steps. At the first step, the
graphite was oxidized by Hummer's method for preparation of graphene oxide
(GO), in the second step, the silanization derivative (GO‐APTES) was obtained
from the reaction of the 3‐(trimethoxysilyl) propylamine and GO. In the final
step, the hybrid material (HM) was synthesized from the reaction of the
3,5‐diiodosalicylaldehyde and GO‐APTES. The chemical structures of three
materials GO, GO‐APTES and HB were characterized by using the FT‐IR,
XRD, EDX, SEM, TEM and UV‐vis methods. Thermal properties of the materials
GO, GO‐APTES and HB were investigated by TGA/DTA methods in the
25–1000°C temperature range. Adsorption and desorption studies of the hybrid
material toward Fe(III) and Cr(III) metal ions were investigated using the Batch
method. The effect of pH, contact time, temperature, concentration on the
adsorption properties of the hybrid material were investigated by ICP‐OES.
The Fe(III) and Cr(III) ions have the maximum adsorption at the pH 7. The
adsorption capacity decreases with the increase in pH values because above
pH 9 the adsorption decreases due to the precipitation of metal hydroxide.
adsorption, graphene oxide, preconcentration, TEM, Fe(III) and Cr(III)
1 | INTRODUCTION
Contamination of air, water, and soil is considered a global
issue for ecosystem and human public health, which
caused after industrial revolution, an increase in popula-
tion, rapid development of industry, and urbanization.
There are many pollutants which are discharged yearly
from households and industrial processes to the environ-
ment that causing enormous effect on humans and also
ecosystem. There are many contaminants but the most
occurred pollutants are heavy metals because of their
extreme uses in our daily lives however heavy metals are
beneficial but they also have their side effects at the high
concentration of their usage.
For example, iron or
ferrum: Excessive industrial production of iron causes seri-
ous damage on environment by discharging metal
leftovers into land fields, water sources and atmosphere.
These negative impacts makes landscape altered land,
cause in soil erosion, changes in land use pattern, land
becomes barren no crops, plants and trees. Binding with
other chemicals in water causes impacts on eco‐balance
and they persist, and they affect on sea life and human
It has an fundamental role as transition metal
in all organisms of living beings.
As the iron concentra-
tion decreases in the body, it leads to a condition which is
called iron deficiency anemia in which the number of red
blood cells (RBCs) in the blood stream reduces by the lack
of iron. On the other hand, at the high concentrations, the
Received: 22 June 2017 Revised: 29 September 2017 Accepted: 29 September 2017
Appl Organometal Chem. 2018;32:e4158.
Copyright © 2017 John Wiley & Sons, Ltd.wileyonlinelibrary.com/journal/aoc 1of12