Maliheh khosravi - Department of Chemistery , Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
Samira Saeednia - Department of Chemistery , Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
Mehdi Hatefi ardakani - Department of Physics , Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
Parvaneh Iranmanesh - Department of Chemistery , Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran

Nanomaterials have very special properties. Two important properties, which distinguish them from other groups; include increased surface of substances and quantum effects. Among the wide range of mineral compounds, metal sulfides are used in various fields. The basic elements are in fact the same nanoscale elements whose properties vary in nanoscale mode with their properties on a larger scale. Among metal sulfids, nickel sulfide, which has been used extensively as a catalyst, IR detectors, rechargeable lithium batteries, solar storage and catalysts. To date, limited reports have been published on the production of nickel sulfide. In this project, along with the preparation of nanosized nickel sulfide, it‘s photocatalytic properties was studied. In a simple and efficient way, a one-step hydrothermal method was used to synthesize NiS using Ni(SO4)2.H2O a source of nickel and a new synthesized thio Schiff base ligand as a source of sulfur. The synthesized NiS was characterized by FT-IR, XRD and EDAX analysis. The morphology and size of particles were investigated by SEM images. To determine the photocatalytic ability of as-synthesizes NiS, color removed of methylorange was studied.[1-5]