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Solvent effect on the electrophoretic mobility and adsorption of Cu on iron oxide by S. Mustafa; S. Tasleem; A. Naeem; M. Safdar is a Materials Science article available to read on EtoBox.

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The adsorption of Cu 2+ from the aqueous and aqueous-organic mixed solution on the iron oxide was studied as a function of temperature, pH and concentration of metal ions. The sorption of Cu 2+ in the presence of different solvents followed the trend: aqueous-ethanol > aqueous-methanol > aqueous media, which is parallel to the increasing order of their dielectric constants. The electrophoretic mobility of the solid was studied to probe the adsorption mechanism. We observed that the electrophoretic mobility of the iron oxide in the presence of Cu 2+ increases with the increase in pH of the suspension. However, a decrease in the electrophoretic mobility with the increase in concentration of metal cation showed the onset of the precipitation of the corresponding hydroxide on the surface of Fe 2 O 3 particle. The solvent effect on the electrophoretic mobility of iron oxide followed the trend: aqueous > aqueous-methanolic > aqueous-ethanolic. We applied different models to explain the mechanism of the adsorption process.

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Author

S. Mustafa; S. Tasleem; A. Naeem; M. Safdar

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-7757)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)