Pechprakob, Wachiraporn, Varatsanan Prasopsuk, and Panu Danwanichakul. “Photocatalytic Activity of Gold and Silver Nanoparticles Synthesized by Using Coffee Flower Extract”. Science & Technology Asia 28, no. 4 (December 27, 2023): 191–202. accessed December 7, 2025. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/249605.