Sol-gel synthesis, characterization and electrochemical corrosion behavior of S-N-C-doped TiO2 nano coating on copper

The corrosion current density of the coated-copper electrode significantly decreases and the corrosion potential shifted to positive values when compared with un-coated copper electrode. The obtained results show that the 300 °C for calcination temperature and 2 h for time heating are the optimum conditions that have created the homogeneous and non-cracked surfaces of S-N-C-doped TiO2 nano coating with improved anticorrosive efficiency.