naa a22 4500 510733565 CHVBK 20180411083001.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s12039-013-0518-3 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0518-3 Self-assembled 1-octadecyl-1H-benzimidazole film on copper surface for corrosion protection [Elektronische Daten] [B APPA RAO, M NARSIHMA REDDY] Films of 1-octadecyl-1H-benzimidazole (OBI) have been formed on copper surface by self-assembly method. Optimum conditions viz. the solvent, concentration of OBI, immersion period and temperature for the formation of a protective film on copper have been established using impedance studies. The OBI film has been characterized by X-ray photoelectron spectroscopy, reflection absorption Fourier transform infrared (FTIR) spectroscopy, contact angle measurements and atomic force microscopy. Efficiency of the OBI film to protect copper from corrosion has been investigated in aq. HCl solution using electrochemical impedance spectroscopy, potentiodynamic polarization method, cyclic voltammetry, scanning electron microscopy and gravimetry. Results of these studies inferred that the OBI film has an inhibition efficiency in the range of 97-99% under different conditions. Polarization studies inferred that the OBI film functions as a cathodic inhibitor. Cyclic voltammetric studies showed that the film is stable even after 15 cycles, when the copper electrode is polarized to an anodic potential of 0.35 V vs. Ag/AgCl electrode. Graphical Abstract 1-Octadecyl-1H-benzimidazole (OBI) film has been formed on copper surface by self-assembly. The OBI film has been characterized by XPS, FT-IR and AFM. The efficiency of this film to protect copper from corrosion has been investigated by electrochemical techniques and gravimetry. The OBI film has excellent efficiency and is quite stable. Indian Academy of Sciences, 2013 Copper nationallicence benzimidazole nationallicence self-assembled film nationallicence X-ray photoelectron spectroscopy (XPS) nationallicence impedance nationallicence corrosion protection nationallicence APPA RAO B. Department of Chemistry, National Institute of Technology Warangal, 506 004, Warangal, India aut NARSIHMA REDDY M. Department of Chemistry, National Institute of Technology Warangal, 506 004, Warangal, India aut Journal of Chemical Sciences Springer India 125/6(2013-11-01), 1325-1338 0974-3626 125:6<1325 2013 125 12039 https://doi.org/10.1007/s12039-013-0518-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0518-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- APPA RAO B. Department of Chemistry, National Institute of Technology Warangal, 506 004, Warangal, India aut NATIONALLICENCE 700 1- NARSIHMA REDDY M. Department of Chemistry, National Institute of Technology Warangal, 506 004, Warangal, India aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer India 125/6(2013-11-01), 1325-1338 0974-3626 125:6<1325 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer