A study was conducted to demonstrate the growth of photocatalytic CdSe-Pt nanorods and nanonets. CdSe nanorods were synthesized by high-temperature pyrolysis of suitable precursors in a coordinating solvent, containing a mixture of TOPO and phosphonic acids. The CdSe nanorods were transferred into an aqueous solution by exchanging the organic capping ligands with water-soluble MUA. Improved photocatalysis was observed in nanonets compared to nanorods. The photocatalysis was found to be consistent with the smaller mean size of the Pt dots at acidic pH, leading to enhanced reactivity. It was also observed the nanorod surface coverage, with Pt dots is denser than in basic conditions in acidic conditions. It was showed this condition provided more catalytic sites on the CdSe-Pt nanonets, in comparison to the CdSe-Pt nanorods.