Affiliations: Department of Chemistry, Bangladesh University of
Engineering and Technology, Dhaka-1000, Bangladesh | Department of Chemistry, University of Dhaka,
Dhaka-1000, Bangladesh
Abstract: Recently, mixed metal oxide (MMO) appears be a promising material
for the removal of textile dyes. In our previous investigation with
nickel-cobalt mixed oxide, anionic dye was removed (∼70%) by the matrix. In the
extension of our study, copper-cobalt mixed oxide is studied to search for a
superior adsorbent. Results demonstrated copper-cobalt mixed oxide as a better
option to other oxide adsorbents. A simple chemical route was followed to
prepare MMO matrix by precipitating the corresponding metal carbonates and
heating the mixture of carbonates at 650°C under ambient atmosphere. IR, SEM
and XRD methods were used to inspect the prepared MMO, while composition was
studied by EDX analysis. UV-Vis was carried out for the adsorption studies. An
anionic dye and a cationic dye were used to study the oxide matrix as
adsorbent. It has been shown that anionic dyes can be removed completely at low pH with the MMO matrix.
