synthesis of nanocomposites of multiwall carbon nanotubes (MWCNTs) with co-oxide (MWCNTs)/MO.

What is it about?

This work describes the synthesis of nanocomposites of multiwall carbon nanotubes (MWCNTs) with co-oxide nanocomposite (MWCNTs)/MO. These nanocomposites were prepared using a simple evaporation and drying process. The obtained composites were characterized using X-Ray diffraction (XRD), Atomic force microscopy (AFM), Fourier Transform Infrared Spectroscopy (FTIR), and scanning electron microscopy (SEM). The activity of the prepared composites was investigated by following the removal of Bismarck brown G dye (BBG) from aqueous solution via adsorption processes and photocatalytic reactions. Different reaction parameters were performed, such as the effect of dosage of the used nanocomposite, pH value, and effect of temperature. In addition, adsorption isotherms and reaction kinetics were investigated. The efficiency of photocatalytic dye removal over the prepared composites was 99.9% after one hour of reaction at the optimal conditions, which were mass dosage (0.03 g), pH (5), and temperature (303 K). The adsorption isotherm data were fitted with Langmuir isotherm, and the kinetic data were fitted with the pseudo-second-order kinetic model.

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Why is it important?

The present study describes the preparation of nanocomposites materials of functionalized multi-walled carbon nanotubes and Cr2O3-NiO co-oxide in different ratios. Then the activity of these prepared composites materials (MWCNTs/Cr2O3-NiO) would be investigated by following removal of Bismarck brown G dye (BBG) by adsorption and photocatalytic reaction over these prepared nanocomposites.