4-Phenylpyrimidine monolayer protection of a copper surface from salt corrosion. Issue 14 (15th February 2018)

• Record Type: Journal Article
• Authors: Wei, N.; Jiang, Y.; Liu, Z.; Ying, Y.; Guo, X.; Wu, Y.; Wen, Y.; Yang, H.
• Is Part Of: RSC advances. Volume 8:Issue 14(2018)
• Page Start: 7340
• Page End: 7349
• Publication Date: 2018-02-15
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra12256j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The efficiency of a 4-phenylpyrimidine monolayer optimally self-assembled on a copper surface against corrosion by a 3 wt% NaCl solution could reach 83.2%. Abstract : 4-Phenylpyrimidine (4-PPM) containing N heteroatoms can easily form compact and uniform layers on metallic surfaces. In this work, the protection of a copper surface from corrosion in 3 wt% NaCl by a 4-PPM layer was investigated by electrochemical impedance spectroscopy (EIS) and polarization methods. Under optimum conditions, the inhibition efficiency of a 4-PPM layer for copper corrosion reached 83.2%. Raman analysis in conjunction with calculations using density functional theory (DFT) based on the B3LYP/LANL2DZ basis set suggested that the 4-PPM molecule anchored on the copper surface via the N1 atom to construct a uniform layer.