Khongsichan, L., Phumivanichakit, K., Sansook, S. and Jaeleema, M. 2025. Study on the Photocatalytic Activity of ZnO and Ag/ZnO Nanoparticles Synthesized via Green Chemistry using Psidium guajava L. Leaf Extract. Journal of Science, Agriculture and Technology. 4, 1 (Jun. 2025), 37–53.