(TGA) and diffuse reflection spectroscopy (DRS). The CdSnanorods have 12–18 nm sizes according to TEM. The catalyst was used successfully in the chemoselective photocatalytic reduction of nitroarenes using a CdS/poly ethyleneglycol 400–water system (CdS/PEG–H2O). The reaction was successfully carried out under green and blue LED illumination by using ammonium formate as a sacrificial electron donor in