en Research Paper Research Paper <span style="font-size:11pt"><span style="text-justify:inter-ideograph"><span style="line-height:150%"><span calibri="" style="font-family:"><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">&nbsp;&nbsp;&nbsp;&nbsp; Zinc Oxide (ZnO) nanorods and titanium dioxide (TiO₂) nanostructures thin films were prepared onto glass substrates by the chemical bath deposition (CBD) method. The ZnO was structured as nanorods (NRs) while TiO₂ was formed as nanoflowers plate as confirmed by Field-Emission Scanning Electron Microscope (FESEM) images. The ZnO/Fe₃O₄ and TiO₂/Fe₃O₄ nanostructures thin films were prepared via drop-casting Fe₃O₄ NPs onto the grown ZnO and TiO₂ nanostructures thin films. The diameter of Fe₃O₄ NPs was deposited onto ZnO NRs thin films and TiO₂ nanostructures thin films was ranged from 8nm to 59nm with dominated range between 10nm to 30 nm. &nbsp;The crystalline structure of prepared samples was investigated through X-ray diffraction (XRD) method. However, the particles size of Fe₃O₄&nbsp;was estimated&nbsp; by XRD as well as FESEM images was around 22 nm. The photocatalytic activity of the as-prepared ZnO/Fe₃O₄ and TiO₂/Fe₃O₄ nanostructures thin films was investigated against methylene blue (MB) dye at room temperature with a pH value of 10 under different exposure time by visible light. The photodegradation rate of MB dye by ZnO/Fe₃O₄ and TiO₂/Fe₃O₄ nanostructures thin films was higher than that obtained by ZnO and TiO₂ nanostructures thin films. The best photodegradation rate of MB dye was 100% after exposure time of 180 min was obtained by ZnO/Fe₃O₄ nanostructures thin film whereas it was 82% for TiO₂/Fe₃O₄ nanostructures thin films after exposure time of&nbsp; 240 min. &nbsp;</span></span></span></span></span></span></span><br> &nbsp; ,ZnO/Fe3O4,TiO2 /Fe3O4,core/shell,photocatalysis,MB dye. 1 8 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-4096-1&slc_lang=en&sid=1 M.J Kadhim marooj2013@gmail.com 1800319475328460018369 1800319475328460018369 Yes Department of Physics, College of Science, University of Basrah, Basrah, Iraq Fatima Allawi 1800319475328460018370 1800319475328460018370 No Department of Chemistry, College of Science, University Kufa, Najaf, Iraq M. A. Mahdi 1800319475328460018371 1800319475328460018371 No Department of Physics, College of Science, University of Basrah, Basrah, Iraq Sami Najah Abaas 1800319475328460018372 1800319475328460018372 No Department of Physics, College of Science, University of Basrah, Basrah, Iraq