Impacts of r-GO and N-doping on the structural, magnetic, optical and photocatalytic properties of CuAl 2 O 4 : enhanced crystal violet removal under solar light irradiation

of catalyst dosage at pH = ∼10. This robust photocatalytic performance might be attributed to N/rGO, which hindered the recombination of electron-hole pairs, thus enhancing the surface area and providing more active sites for dye adsorption. A possible mechanism of CV degradation was proposed using different scavenging agents. Structural stability and practical utility of the used CA-N/GO4 catalyst were assessed after four continuous runs, which demonstrated good outcomes. Thus, these results reveal that the novel and magnetically separable CA-N/GO4 nanohybrid has a remarkable prospect for the elimination of toxic dyes from industrial sewage water under visible irradiation.