ABSTRACT The application of photocatalysts is to overcome water pollution due to the waste from industrial processing. Photocatalysts using Ag-ZnO composite materials synthesized with Zn(NO3)2 and AgNO3 as Zn and Ag precursors and pineapple peel extract as biostabilizers have been carried out. The percentage of Ag varied, namely 5%, 10% and 15% irradiated using a microwave for 2 minutes with a…