Next Article in Journal
Cellulose Perversions
Previous Article in Journal
How Can Nanotechnology Help to Repair the Body? Advances in Cardiac, Skin, Bone, Cartilage and Nerve Tissue Regeneration
Article Menu

Export Article

Open AccessArticle
Materials 2013, 6(4), 1360-1376; doi:10.3390/ma6041360

Magnetic Graphene Oxide: Effect of Preparation Route on Reactive Black 5 Adsorption

1
Department of Petroleum and Natural Gas Technology, Technological Educational Institute of Kavala, Kavala GR–654 04, Greece
2
Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR–541 24, Greece
3
Department of Physics, Aristotle University of Thessaloniki, Thessaloniki GR–541 24, Greece
*
Author to whom correspondence should be addressed.
Received: 14 January 2013 / Revised: 21 March 2013 / Accepted: 25 March 2013 / Published: 28 March 2013
View Full-Text   |   Download PDF [418 KB, uploaded 28 March 2013]   |  

Abstract

In this study, the effect of preparation route of magnetic graphene oxide (mGO) on Reactive Black 5 (RB5) adsorption was investigated. The synthesis of mGO was achieved both with (i) impregnation method (mGOi nanoparticles), and (ii) co-precipitation (mGOp nanoparticles). After synthesis, the full characterization with various techniques (SEM, FTIR, XRD, DTA, DTG, VSM) was achieved revealing many possible interactions/forces of dye-composite system. Effects of initial solution pH, effect of temperature, adsorption isotherms and kinetics were investigated in order to conclude about the aforementioned effect of the preparation method on dye adsorption performance of the magnetic nanocomposites. The adsorption evaluation of the magnetic nanoparticles presented higher adsorption capacity of mGOp derivative (188 mg/g) and lower of mGOi (164 mg/g). Equilibrium experiments are also performed studying the effect of contact time (pseudo-first and -second order equations) and temperature (isotherms at 25, 45 and 65 °C fitted to Langmuir and Freundlich model). A full thermodynamic evaluation was carried out, calculating the parameters of enthalpy, free energy and entropy (ΔH0, ΔG0 and ΔS0).
Keywords: magnetic graphene oxide; preparation; impregnation; co-precipitation; adsorption; reactive dye magnetic graphene oxide; preparation; impregnation; co-precipitation; adsorption; reactive dye
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kyzas, G.Z.; Travlou, N.A.; Kalogirou, O.; Deliyanni, E.A. Magnetic Graphene Oxide: Effect of Preparation Route on Reactive Black 5 Adsorption. Materials 2013, 6, 1360-1376.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top