Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection
Nickel-layered silicates were electrochemically deposited from acidic bath solutions. Citrate was used as a ligand to stabilize nickel (II) ions in the plating solution. The silicate, montmorillonite, was exfoliated by stirring in aqueous solution over 24 hours. The plating solutions were analyzed f...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/853869 |
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| author | Jeerapan Tientong Casey R. Thurber Nandika D’Souza Adel Mohamed Teresa D. Golden |
| author_facet | Jeerapan Tientong Casey R. Thurber Nandika D’Souza Adel Mohamed Teresa D. Golden |
| author_sort | Jeerapan Tientong |
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| description | Nickel-layered silicates were electrochemically deposited from acidic bath solutions. Citrate was used as a ligand to stabilize nickel (II) ions in the plating solution. The silicate, montmorillonite, was exfoliated by stirring in aqueous solution over 24 hours. The plating solutions were analyzed for zeta-potential, particle size, viscosity, and conductivity to investigate the effects of the composition at various pHs. The solution particles at pH 2.5 (−22.2 mV) and pH 3.0 (−21.9 mV) were more stable than at pH 1.6 (−10.1 mV) as shown by zeta-potential analysis of the nickel-citrate-montmorillonite plating solution. Ecorr for the films ranged from −0.32 to −0.39 V with varying pH from 1.6 to 3.0. The films were immersed in 3.5% NaCl and the open circuit potential monitored for one month. The coatings deposited at pH 3.0 were stable 13 days longer in the salt solution than the other coatings. X-ray diffraction showed a change in the (111)/(200) ratio for the coatings at the various pHs. The scanning electron microscopy and hardness results also support that the electrodeposition of nickel-montmorillonite at pH 3.0 (234 GPa) had improved hardness and morphology compared to pH 2.5 (174 GPa) and pH 1.6 (147 GPa). |
| format | Article |
| id | doaj-art-c1d5828737574f52a202e17484d675d4 |
| institution | Kabale University |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
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| series | International Journal of Electrochemistry |
| spelling | doaj-art-c1d5828737574f52a202e17484d675d42025-02-03T01:02:00ZengWileyInternational Journal of Electrochemistry2090-35292090-35372013-01-01201310.1155/2013/853869853869Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion ProtectionJeerapan Tientong0Casey R. Thurber1Nandika D’Souza2Adel Mohamed3Teresa D. Golden4Department of Chemistry, University of North Texas, 1155 Union Circle No. 305070, Denton, TX 76203, USADepartment of Chemistry, University of North Texas, 1155 Union Circle No. 305070, Denton, TX 76203, USADepartment of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76207, USACenter for Advanced Materials, Qatar University, P.O. Box 2713, Doha, QatarDepartment of Chemistry, University of North Texas, 1155 Union Circle No. 305070, Denton, TX 76203, USANickel-layered silicates were electrochemically deposited from acidic bath solutions. Citrate was used as a ligand to stabilize nickel (II) ions in the plating solution. The silicate, montmorillonite, was exfoliated by stirring in aqueous solution over 24 hours. The plating solutions were analyzed for zeta-potential, particle size, viscosity, and conductivity to investigate the effects of the composition at various pHs. The solution particles at pH 2.5 (−22.2 mV) and pH 3.0 (−21.9 mV) were more stable than at pH 1.6 (−10.1 mV) as shown by zeta-potential analysis of the nickel-citrate-montmorillonite plating solution. Ecorr for the films ranged from −0.32 to −0.39 V with varying pH from 1.6 to 3.0. The films were immersed in 3.5% NaCl and the open circuit potential monitored for one month. The coatings deposited at pH 3.0 were stable 13 days longer in the salt solution than the other coatings. X-ray diffraction showed a change in the (111)/(200) ratio for the coatings at the various pHs. The scanning electron microscopy and hardness results also support that the electrodeposition of nickel-montmorillonite at pH 3.0 (234 GPa) had improved hardness and morphology compared to pH 2.5 (174 GPa) and pH 1.6 (147 GPa).http://dx.doi.org/10.1155/2013/853869 |
| spellingShingle | Jeerapan Tientong Casey R. Thurber Nandika D’Souza Adel Mohamed Teresa D. Golden Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection International Journal of Electrochemistry |
| title | Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection |
| title_full | Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection |
| title_fullStr | Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection |
| title_full_unstemmed | Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection |
| title_short | Influence of Bath Composition at Acidic pH on Electrodeposition of Nickel-Layered Silicate Nanocomposites for Corrosion Protection |
| title_sort | influence of bath composition at acidic ph on electrodeposition of nickel layered silicate nanocomposites for corrosion protection |
| url | http://dx.doi.org/10.1155/2013/853869 |
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