Thao, Truong, Tam, Khieu, Thom, Nguyen, AND Tuan, Nguyen. " Green Synthesis of ZnO Nanoparticles using Piper chaudocanum L. Leaf Extract: Characterization and its Application in Pb (II) Adsorption" VNU Journal of Science: Natural Sciences and Technology [Online], Volume 38 Number 3 (21 September 2022)