Preparation of Ag3PO4-based powders with aggregate size ranging from 2 to 20 µm. Photooxidative degradation of methylene blue and phenol under solar-like radiation. Limitation of photocorrosion by using UV cut-off filter. Highly effective photoinduced deactivation of Gram-negative E. coli. Influence of released silver on the antimicrobial properties of the photocatalysts.