October 2014

Adsorption of heavy metal ions onto chitosan grafted cocoa husk char

The use of chitosan-grafted cocoa husk char (CCH) and unmodified cocoa husk char (CH) as adsorbents for the removal of Cr6+ and Pb2+ were studied. The adsorption efficiencies were compared with that of the commercial activated carbon (GAC F-300). Energy Dispersive X-ray spectroscopy (EDS) was used to determine the elemental compositions of the adsorbents while Scanning Electron Microscope (SEM) was used for the surface...

Author(s): Aderonke A. Okoya, Abimbola B. Akinyele, Ifeanyi E. Ofoezie, Omotayo S. Amuda, Oluwagbemiga S. Alayande and Oladotun W. Makinde

October 2014

Synthesis, characterization and thermal analysis of the copper(II) complexes with 2,2'-bipyridyl and 1,10-phenanthroline

The Cu(II) complexes were synthesized by the addition of Cu(II) acetate  monohydrate to ligand in aqueous solution with 1,10-phenanthroline and 2,2'-bipyridyl which led to the precipitation of  complexes. The synthesized Cu(II) complexes [Cu(SAla)phen(H2O)].H2O, [Cu(SAla)bpy(H2O)].H2O were found to be soluble in water, ethanol, methanol and DMSO. The electronic spectra and the magnetic moment support the...

Author(s): S. Chandraleka and G. Chandramohan