Methyl Orange (MO) is a toxic synthetic dye commonly employed during dyeing that released into rivers water is significantly challenging. Fabricating eco-friendly and cost-effective nano-photocatalyst for water treatment is gaining interest. The current study focused on synthesising Cerium (Ce)-doped ZnO nanoparticles (NPs) of solution via continuous wave (CW) and high-power lasers that reduces the bandgap of undoped ZnO to improve light harvesting.