[EN] In the present work, ternary composites of the form CdS/CeO/AgPO with CdS:CeO/AgPO molar ratios of (1:1, 2:1, 3:1 and 4:1) were synthesized by co-precipitation method. Polyaniline supported CdS/CeO/AgPO nanocomposite was also synthesized by “in situ” chemical oxidative method. Physicochemical properties of the photocatalyst materials were determined using XRD, BET, SEM-EDX, TEM, UV/Vis, FTIR and PL techniques. Photocatalytic activities of the ternary CdS/CeO/AgPO (1:1, 2:1, 3:1 and 4:1 molar ratios) nanocomposites were found to be higher than their single and binary counterparts. The effects of different operational parameters such as pH, initial dye concentration, photocatalyst load and scavengers in MeO dye degradation study confirmed the following optimum values: pH 4, initial dye concentration 10 ppm and photocatalyst load 0.15 g/L. The effects of different scavengers suggest that •O- and •OH scavengers play major roles in the degradation of MeO. The supported photocatalyst exhibited a relatively higher efficiency (93.4%) on the photodegradation of MeO dye. In addition, it showed fairly well photocatalytic activity (70.7%), for the textile effluent collected from one of the local textile industries. Furthermore, the reusability of the supported photocatalyst was tested. About 80% of the catalyst efficiency was maintained after four successive runs exhibiting the potential application of this novel composite for degradation of MO dye from aquatics system.

Ministry of Education through office of the Research and Extension, Haramaya University (HURG-2016-03-02). I. D. acknowledges the funding from CSIC (2019AEP076), the Spanish Research Agency (AEI) and the European Regional Development Fund (FEDER) through the Project MAT2016-77496-R (AEI/FEDER, UE)

Peer reviewed