Synergistic Effect of Chloride and Bromide Ions on Corrosion Inhibition of Steel in 1 mol L–1 Phosphoric Acid Using Cationic Gemini Surfactant
Zhen-Yu Wu1
1School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
2School of Chemistry and Chemical Engineering, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, Anhui University, Hefei 230039, P.R. China
*Corresponding author: Tel/Fax: +86 551 5831761; E-mail: wuzhenyuhn@163.com
Zheng Fang1
1School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
2School of Chemistry and Chemical Engineering, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, Anhui University, Hefei 230039, P.R. China
*Corresponding author: Tel/Fax: +86 551 5831761; E-mail: wuzhenyuhn@163.com
Wang Zhang2
1School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
2School of Chemistry and Chemical Engineering, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, Anhui University, Hefei 230039, P.R. China
*Corresponding author: Tel/Fax: +86 551 5831761; E-mail: wuzhenyuhn@163.com
Xia Jiang2
1School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
2School of Chemistry and Chemical Engineering, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, Anhui University, Hefei 230039, P.R. China
*Corresponding author: Tel/Fax: +86 551 5831761; E-mail: wuzhenyuhn@163.com
Ling-Guang Qiu2
1School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
2School of Chemistry and Chemical Engineering, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, Anhui University, Hefei 230039, P.R. China
*Corresponding author: Tel/Fax: +86 551 5831761; E-mail: wuzhenyuhn@163.com
Asian Journal of Chemistry,
Vol. 23 No. 5 (2011): Vol 23 Issue 5
Synergism effect of a cationic gemini surfactant, 1,2-ethane-bis(dimethyl dodecyl ammonium bromide) (12-2-12), and halide ion (Br– or Cl–) for corrosion inhibition of cold rolled steel in 1.0 mol L-1 phosphoric acid was investigated by using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. Some thermodynamic parameters were calculated by fitting experimental data with Langmuir model. Potentiodynamic polarization studies reveal that the inhibition species is a mixed-type inhibitor. electrochemical impedance spectroscopy measurements suggest that the presence of inhibitor molecules in acidic solution decreases double layer capacitance and increases the charge transfer resistance, indicating the formation of a protective layer on steel surface.
Wu1, Z.-Y., Fang1, Z., Zhang2, W., Jiang2, X., & Qiu2, L.-G. (2011). Synergistic Effect of Chloride and Bromide Ions on Corrosion Inhibition of Steel in 1 mol L–1 Phosphoric Acid Using Cationic Gemini Surfactant. Asian Journal of Chemistry, 23(5), 2027–2033. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/10325
