Khongsichan, Ladawan, Kanokwan Phumivanichakit, Supojjanee Sansook, and Maseelatee Jaeleema. 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). Narathiwat, Thailand:37-53. https://li04.tci-thaijo.org/index.php/psj/article/view/3778.