AbstractDevelopment of benign and efficient approaches towards the replacement of the conventional methods for producing SnO2 nanoparticles (SnO2 NPs) has begun in which a biosynthesis process has been introduced. This study utilizes biomolecules, specifically the flavonoids and carbohydrate groups in pandan and soybean extracts. The biosynthesized nanoparticles underwent characterization through relevant spectroscopies. Fourier transform infrared (FTIR) analysis revealed the absorption bands of SnO2 and Sn-O-Sn groups, with the complete disappearance of peaks associated with untreated pandan and soybean. X-ray Diffraction (XRD) indicated the formation of tetragonal structure in SnO2 NPs with primary peaks at 27o, 34o, and 51o. Additionally, UV-Visible diffuse reflectance spectroscopy (DRS) yielded band gap values of 4.86 and 3.45 eV for SnO2 NPs derived from pandan and soybean, respectively. In summary, the application of biosynthesized SnO2 NPs as a potential heterogeneous catalyst for purif.....