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

Abstract Corrosion inhibition for Cu 2 O 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 Cu 2 O nanoparticles. Control of the type and amount of regulators has been demonstrated to produce well-dispersed and active Cu 2 O nanoparticles (∼100 nm). The oxidation temperature of Cu 2 O 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_4 C_5, N_2 and O_2) facilitate the formation of stable protective film over Cu 2 O surface.