Mohammad, E.J. et al. 2019. Synthesis of Carbon Nanotubes from Graphite and Investigation of the Catalytic Activity of MWCNTs/Cr2O3–NiO with the Removal of Bismarсk Brown G Dye from Its Aqueous Solution. Ukrainian Journal of Physics. 64, 4 (May 2019), 276. DOI:https://doi.org/10.15407/ujpe64.4.276.