Development of foamy-like 3-dimensional graphene networks decorated with iron oxide nanoparticles for strontium adsorption

ABSTRACT

Three-dimensional magnetic graphene foam (3D-MGF) was improved for removal of strontium ions. Chemical Vapor Deposition (CVD) method and hydrothermal method were used to obtained 3D-MGFs, respectively. Central Composite Design (CCD) method was conducted to establish the optimum conditions for adsorption of strontium ions on 3D-MGFs. At the optimum conditions, the maximum adsorption capacity was calculated 39.68 mg/g. Freundlich isotherm model showed that a multilayer formation occurred in the 3D-MGF’s surface. Moreover, the adsorption process was endothermic, and recycle experiments showed there was about 25% loss in the adsorption capacity of 3D-MGFs for strontium ions after 5 times reuse.

KEYWORDS:

• Water pollution
• isotherm models
• iron oxide nanoparticles
• three dimensional graphene foam

Acknowledgements

This study was funded by The Scientific and Technological Research Council of Turkey (TUBITAK) under the grant No: 115Y344. The author is grateful to TUBITAK, for its valuable supports.

Conflicts of interest

There are no conflicts to declare.

Additional information

Funding

This work was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) under the grant No: 115Y344.