The development of clean and renewable energy sources is an extremely important issue for tackling environmental problems. To produce hydrogen, the process of water spiliting under sunlight is one of the most valuable methods for generating clean and renewable energy sources. Among the different conductors, Titanium Dioxide has special properties such as high chemical stability and environmental compatibility for the practical applications and uses in the industry. However, due to the fact that the UV range is active for Application on a wide scale is limited. This problem can be solved by depositing different elements or combining with other conductors. In this thesis, by electrochemical anodizing of TiO 2 and WO 3 -TiO 2 nanotubes, the coating of oxalic acid and iron oxide in various concentrations by coating with a chemical bath (CBD) coating on TiO 2 nanotubes and coating WO 3 -TiO 2 And using SEM, XRD, UV-Visible and Raman spectroscopy, respectively, their morphology, structure, and optical properties were investigated. In these studies, the formation of nanotubes, the presence of tungsten in these nanotubes was proven, and it was also shown that metals were present at the surface of the nanotubes and the band gap of the compounds was reduced. To investigate the photoelectrococaltic properties of nanotubes, LSV and chronoamperometric tests were used in which all specimens in both sections exhibited higher flows than the non-coated sample, so that in the first section, the highest flow rate for the T 3 sample was set to 756 µA, and in the second part, the highest flow is related to the WT 2 sample, which is 10 times higher than the unopposed WO 3 -TiO 2 sample. Even in the lowest flow that is related to the WT 5 sample, the flow is 2.5 times more than the uncovered sample. The stability of the samples was studied using chronoamperometric test and it was shown that photocatalysts are very stable under long exposure. In the first part, the highest amount of hydrogen production was 80 ?Lcm -2 and in the second part, the maximum value was 40 ?Lcm -2 . In general, the results of studies showed that due to the coating of metals, the photovoltaic property of nanotubes was improved and in TiO 2 part, T 3 (0.05 molar cobalt and 0.05 molar iron) and in WO 3 -TiO 2 part of the sample WT 2 (0.08 molar cobalt and 0.02 molar iron) were selected as optimal samples due to better response to these tests.