Synthesis of ZnO nanoparticles was carried by doping Ag. ZnO nanoparticles were prepared by biosynthetic method using pineapple peel extract as a reducing agent. This study aims to look the effect of adding Ag to ZnO nanoparticles. The percentage variation of Ag to ZnO is 1%, 3%, and 5%. The pineapple peel extract mixed with 0.05 M (Zn(NO3)2)∙6H2O and 0.05 M AgNO3 precursor solutions. The…