G-C3N4-based multi-metal oxide nanocomposites: A new frontier in catalytic performance

Pollution affects land, air, and water, posing serious threats to humanity and other living things. Planning and treating polluted water are essential to safeguarding future generations since water pollution is especially harmful. Current research focuses on the vitiation of organic dyes extracted from industry and drained from water reservoirs. In this work, g-C₃N₄/Fe₂O₃/NiO/Dy₂O₃ and g-C₃N₄/CeO₂/BaO/Al₂O₃ nanocomposites are synthesized for photocatalysis application. Co-precipitation and ultra-sonication were the synthetic techniques utilized to prepare the g-C₃N₄/Fe₂O₃/NiO/Dy₂O₃ and g-C₃N₄/CeO₂/BaO/Al₂O₃ nanocomposites. The dyes Rhodamine B (RhB) and Phenol Red (PR) were selected to investigate the nanomaterial's degradation efficiency. The g-C₃N₄/Fe₂O₃/NiO/Dy₂O₃ nanocomposite demonstrated the highest efficiency, 86.37 % degradation RhB and 78 % phenol red, respectively, which showing that it is a strong contender for the treatment of contaminated water. Scavengers' tests were also conducted to establish the primary agent responsible for dye degradation. The results clearly show that hydroxyl radicals are responsible behind the degradation of these organic colors. A unique paradigm of utilizing distinct metal combinations to highlight the practical relevance in the realm of catalytic performances.