Corrosion inhibition during synthesis of Cu2O nanoparticles by 1,3-diaminopropylene in solution

Corrosion inhibition for Cu2O nanoparticles in solution using the regulators of 1,3-dimorpholinpropylene and 1,3-diethylaminopropylene was studied by experimental and theoretical calculation methods. The inhibition mechanism of regulators was related to the arrangement of cetyltrimethylammonium (CTAB) molecules on the surface of Cu2O nanoparticles. Control of the type and amount of regulators has been demonstrated to produce well-dispersed and active Cu2O nanoparticles (∼100 nm). The oxidation temperature of Cu2O nanoparticles decreased from 297.9–404.4 °C (blank) to 232.3–334.3 °C (containing regulator). For 1,3-dimorpholinpropylene, its arc structure and active sites (C_4C_5, N_2 and O_2) facilitate the formation of stable protective film over Cu2O surface.