Nanomaterials based on pseudo-binary oxides Zn3(Ta1-xNbx)2O8 (where x = 0; 0.05; 0.1; 0.5 and 1) were obtained by solid-state method varying the molar ratios of tantalum (V) oxide, niobium (V) oxide and zinc oxide. Three of these nanomaterials are based on novel structures, namely: Zn3(Ta0.5 Nb0.5)2O8, Zn3(Ta0.9Nb0.1)2O8 and Zn3(Ta0.95 Nb0.05)2O8. The structures of the above mentioned nanomaterials were thoroughly characterized by X-ray diffraction, FT-IR, UV-VIS and PL spectroscopy, SEM and AFM microscopy techniques. A potential application of these nanomaterials as corrosion inhibitors is presented. The property of corrosion inhibition was demonstrated by electrochemical methods, such as: open circuit potential measurement and potentiodynamic polarization with Tafel representation. The studies were performed on all obtained pseudo-binary oxides Zn3(Ta1-xNbx)2O8 (where x = 0; 0.05; 0.1; 0.5 and 1) after their deposition onto carbon steel surfaces (OL) in 0.1 mole/L Na2SO4 media. The experiments revealed that the corrosion protection is fairly good for all tested nanomaterials and that the electrode modified with Zn3Ta2O8 presented a top inhibition efficiency of 56.49%.