Influence of Al2O3 Nanoparticles on Corrosion Inhibition Performance of Benzotriazole to Brass
| Autor: | Le-Tian Wang, Hong-Hua Ge, Feng Wang, Xin-Jing Meng, Kai Wu, Jun-Yi Sha, Chuan Wan, Yu-Zeng Zhao |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Langmuir
Materials science Benzotriazole Biomedical Engineering Bioengineering General Chemistry Condensed Matter Physics Dielectric spectroscopy Corrosion Gibbs free energy Brass symbols.namesake chemistry.chemical_compound Adsorption Nanofluid chemistry visual_art visual_art.visual_art_medium symbols General Materials Science Nuclear chemistry |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 18:8327-8332 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2018.16421 |
| Popis: | The influence of Al2O3 nanoparticles on corrosion inhibition of benzotriazole (BTA) in brass/ simulated water system was studied by potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS). The results show that BTA has good corrosion inhibition effect on brass. Al2O3 nanoparticles could reduce the corrosion inhibition performance of BTA. The higher the concentration of Al2O3 nanoparticles in simulated water, the lower corrosion inhibition performance of BTA. The isothermal adsorption of BTA on brass surface in simulated water and Al2O3 nanofluids was analyzed. The results indicated that the adsorption of BTA on brass surface followed the Langmuirs’ adsorption isotherm, the adsorption Gibbs free energy ΔG was less than −40 kJ/mol, corresponding to chemical adsorption, in both simulated water and Al2O3 nanofluids. The −ΔG value of BTA on brass surface decreased in Al2O3 nanofluids, indicating the weakening of the BTA adsorption on the brass surface. Surface analysis of brass samples by optical microscope and X-ray diffraction confirmed the above results. |
| Databáze: | OpenAIRE |
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