Synergistic Ce/Ag/N-doped ZnO–MWCNT nanocomposites for efficient photocatalytic wastewater remediation with visible light

Ce/Ag/N-doped ZnO–MWCNT nanocomposites show 92.1% and 87.5% dye degradation under visible light with reduced bandgap (2.89 eV). Synergistic doping enhances charge separation, lowers recombination, and boosts photocatalytic efficiency.