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The hazardous effects of dye-polluted water indeed necessitate a significant solution, as they affect the ecological system and degrade the quality of water resources. The photocatalytic process is one remediation method that employs a photocatalyst capable of photodegrading dye molecules into clean water. Regarding this, tin oxide nanoparticles (SnO2 NPs) is a potential photocatalyst attributed from its large bandgap 3.6 eV. However, the preparation of this photocatalyst, has encountered several drawbacks, including being expensive, hazardous and requiring prolonged duration. The emergence of green synthesis as a replacement has garnered attention due to its safety, cost-effectiveness, and simplicity. In this study, SnO2 NPs were produced using a plant biotemplate derived from Pandan extract and that was mixed with tin chloride solution. The characterization was carried out by using XRD, FTIR and HRTEM analysis to confirm the formation of pure SnO2 NPs. The photodegradation of simulated dyes, namely methylene blue dyes, reached 69% under UV irradiation, while 31% degradation was recorded under solar irradiation. These results indicate that the energy from UV irradiation provides superior energy for photo-oxidation compared to solar light, whereby the potential of this photocatalyst was remarked for remediate the contamination regarding dye pollution in water system.