Kalengay, M.Nsio, Tony N.2019-11-012019-11-012019Kalengay, M., & Nsio, T.N. (2019).Structural and optical studies of tin iron chromium nano oxides. International Science and Technology Journal of Namibia, 13, 38-45.http://hdl.handle.net/11070/2621In the present study, we have synthesized Sn0.2Fe0.9Cr0.9O3 nano oxides. Single phase corundumlike structure and nanophase structure of the as-synthesized sample were confirmed by x-ray diffraction (XRD) and by transmission electron microscope (TEM). The results show that the produced powders have grain size of approximately 32 nm. Using the result of the ultraviolet-visible (UVVis) spectrometer, we were able to determine the energy band gaps of 3.1 and 5.2 eV , when nanoparticles are diluted in iron standard solution and in deionised water respectively.enNanoparticlesHydrothermal methodOptical propertiesArticle