Today's energy system is unsustainable because of equity issues as well as environmental, economical and geopolitical concerns. Therefore, using renewable and sustainable resources, such as hydrogen produced from palm diesel wastewater using photocatalytic water splitting techniques has great potential as a major contribution to future energy supply. However, the efficiency and availability of photocatalyst which can be activated by solar radiation, especially from indoor lighting is limited. The objective of this study is to develop a photocatalyst that is capable of producing hydrogen from water utilizing the visible region of solar radiation. A series of Fe/TiO2 photocatalysts with different Fe loading (0.1-10 wt) were prepared and calcined at 500 for 1 h. Characterization of the photocatalysts was done using Diffuse Reflectance UV-Vis (DR-UV-Vis), Fourier Transform Infrared spectroscopy (FTIR) and X-ray Diffraction (XRD). Photocatalytic activity towards hydrogen generation from water was investigated using a multiport photocatalytic reactor under visible light illumination and it is found that the best photocatalyst was 0.2wt Fe calcined at 500°C for 1 h. Addition of glycerol as a hole scavenger or "sacrificial electron donor" was also done besides conducting the reaction using sea water. The amount of H2 produced in H 2O, glycerol + H2O and sea water was 4.6 mL, 4.9 mL and 4.7 mL, respectively compared to 2.2 mL of H2 produced by TiO 2 from H2O. The reduction of band gap as a result of Fe doping was estimated and the influence of the process parameters on catalytic activity is explained. © 2012 American Institute of Physics.