Here we report a facile strategy to synthesize porous FexCo3-xO4 nanocages by heating Prussian blue analogues FeyCo1-y[Co(CN)(6)](0.67)(center dot)nH(2)0 nanospheres with tunable size and morphology. The iron doping amount had significant influence on the final morphology and the most uniform nanocages were obtained from x = 0.8. The catalytic performance of the nanocages was thoroughly evaluated by activation of peroxymonosulfate (PMS) for removal of bisphenol A (BPA) in water. The influence of different process parameter on the BPA degradation efficiency was examined and the catalytic stability was tested. The BPA degradation pathway was proposed based on GC-MS and LC-MS results. The involved radicals were identified through radical scavenging experiments and electron paramagnetic resonance spectroscopy. Mossbauer and XPS techniques were applied to illustrate the catalytic mechanism and B-site Coll on the surface of FexCo3-xO4 nanocages was determined as the main factor for PMS activation. Results indicate that porous FexCo3-xO4 nanocages are available to serve as alternative environmentally friendly catalysts for pollutants removal by activation of PMS. (C) 2015 Elsevier B.V. All rights reserved.