Rod-TiO₂ and spherical TiO₂ nanoparticles were mixed with water to produce nanofluid. Rod TiO₂ nanoparticles with high surface area in Rutile crystal phase were synthesized at 27 °C using TiCl₄ in aqueous solution. The water based nanofluid consisting of Rutile rod-TiO₂ and spherical Anatase TiO₂ nanoparticles were deposited on Fluorine-doped tin oxide (FTO) coated glass, using the spin coating method. The deposited TiO₂ nanoparticles were sintered to fuse nanoparticles, using a programmable oven. The effects of ramping rate, maximum temperature and period of maximum temperature on 3D structure characteristics of deposited TiO₂ nanofluids were investigated. It was found that as maximum temperature and period of maximum temperature decrease, the crystal growth increases and consequently porosity of deposited nanoparticles increases while nanoparticles fusing to enhance electron transport property. Similarly, it was observed the porosity and crystal growth increased as the ramping rate decreased.