Tin disulfide nanoparticles (SnS2 NPs) are widely used in consumer products including paints, textiles and sunscreens. The present study evaluated the photocatalytic effect of SnS2 NPs for degradation of Enrofioxacin antibiotic, which is part of the fluoroquinolone family. The SnS2 NPs were characterized by using scanning electron microscopy, particle size analyzer, transmission electron microscopy, energy dispersive X-ray spectrometer and X-ray diffraction analysis. The mean diameter of the particles was found to be 23 nm. The XRD patterns exhibited hexagonal structure for NPs. The photocatalytic activity of SnS2 NPs was evaluated based on the degradation of the Enrofloxacin antibiotic solution as a function of reaction time under visible light source. The rate of photocatalytic degradation of antibiotic by SnS2 NPs was high. The SnS2 NPs has favorable antibacterial activity. (C) 2015 Elsevier Ltd. All rights reserved.