Photocatalysis, a process catalyzing photochemical reactions at solid surfaces, holds promise for sustainable energy and environmental applications. Titanium dioxide (TiO2) is a highly utilized photocatalyst because of its affordability, non-toxicity, and stability. In this work, urea was used as the nitrogen source in a one-pot low-temperature annealing process to fabricate nitrogen-doped titania. The efficacy of the synthesized photocatalyst in reducing malachite green under visible light irradiation was assessed and documented. The ratio of TiO2 to urea of 1:7 produced the best degradation, according to the results. Subsequent analysis showed that pH and catalyst loading were important factors in the degradation process, with the maximum degradation efficiency being shown by a catalyst loading of 2 g/L. The nitrogen-doped titania’s superiority in photocatalytic degradation was validated by comparison with undoped TiO2. All things considered, the results highlight nitrogen-doped titania’s potential as a powerful photocatalyst for uses in environmental remediation.