Fabrication of nano Delafossite LiCo{sub 0.5}Fe{sub 0.5}O{sub 2} as the new adsorbent in efficient removal of reactive blue 5 from aqueous solutions

Journal Article · Sat Jun 01 00:00:00 EDT 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.02.045· OSTI ID:22341688

Khosravi, Iman ^[1]; Yazdanbakhsh, Mohammad ^[2]; Eftekhar, Melika ^[1]; Haddadi, Zohreh ^[2]

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1. Department of Chemistry, Qeshm Branch, Islamic Azad University, Qeshm (Iran, Islamic Republic of)
2. Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad 917791436 (Iran, Islamic Republic of)

Highlights: ► Fabrication of nano Delafossite LiCo{sub 0.5}Fe{sub 0.5}O{sub 2} by sol–gel method. ► Kinetic study of the adsorption properties. ► Removal of reactive blue 5 (RB5) as a reactive dye by the prepared new nanocatalyst. - Abstract: In this paper, nanoparticles of delafossite-type LiCo{sub 0.5}Fe{sub 0.5}O{sub 2} were prepared by sol–gel method in the presence of maleic acid as a chelating agent. The nanoparticles were characterized using differential thermal analysis, X-ray powder diffraction, Fourier infrared spectroscopy, transmission electron microscope, scanning electron microscopy and scanning tunneling microscopy. The nanoparticles showed the excellent adsorption properties towards reactive dye, reactive blue 5 (RB5). The adsorption studies were carried out at different pH values, various adsorbent dosages and contact time in a batch experiments. The kinetic studies indicate that the removal process obeys the second-order kinetic equation. Also, the isotherm evaluations reveal that the adsorption of RB5 by the nanoparticles follows the Freundlich model.

• OSTI ID: 22341688
• Journal Information: Materials Research Bulletin, Vol. 48, Issue 6; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
ADSORBENTS
ADSORPTION
AQUEOUS SOLUTIONS
CHELATING AGENTS
DIFFERENTIAL THERMAL ANALYSIS
INFRARED SPECTRA
INORGANIC COMPOUNDS
ISOTHERMS
KINETIC EQUATIONS
MALEIC ACID
NANOPARTICLES
NANOSTRUCTURES
REMOVAL
SCANNING ELECTRON MICROSCOPY
SCANNING TUNNELING MICROSCOPY
SOL-GEL PROCESS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION