Green synthesis approach on fabrication of TiO2 nanoparticle using peel extract of Baccaurea racemosa for photocatalytic degradation of Acid Red-185

• Menteng fruit ( Baccaurea racemosa ) as media in sol–gel process. • Bio-capping and bio-oxidizing agents. • Photocatalytic degradation of Acid Red-185. When it comes to fabricating metal oxide nanoparticles (NPs), green synthesis stands out as a dependable, sustainable, eco-friendly, and remarkable substitute for the more effective and classical chemical processes. This study prepared and investigated green synthesis on fabrication of titanium dioxide nanoparticles (TiO 2 NPs) utilizing peel extract of Baccaurea racemosa and evaluated its photocatalytic activity. The XRD patterns demonstrated the highly crystalline structure of anatase TiO 2 with nanocrystallite size obtained about 8 nm. FESEM image confirmed spherical-shaped of TiO 2 with nanosized about 32 nm and showed that prepared TiO 2 was a stable particle from zeta potential data. The phytochemical components in the peel extract were in responsibility of the capping and reducing agents in the production of TiO 2 , as indicated by the FTIR spectra. This study showed that Baccaurea racemosa waste may be a viable reducing and capping agent in synthesis of TiO 2 -NPs. Furthermore, the prepared TiO 2 exhibited high photocatalytic activity and 99 % degraded the Acid Red-185 dye which fitted pseudo first order kinetics.