Influence of tungstate ions on transformation of green rust to ferric oxyhydroxide via aqueous solution investigated by in situ X-ray absorption spectroscopy

Fujieda, Shun; Yoshino, Aya; Shinoda, Kōzō; Tsuri, S.; Suzuki, Shigeru

doi:10.1016/j.corsci.2014.01.003

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…[17] Different from the traditional metal-phenol coordination, [18] metal-PA coordination has greater binding energy and greater stability. [19] PA can chelate with many metal ions, including Zn 2+ [20] , Fe 2+ [21], Fe 3+ [22] , Al 3+ [23] and Cu 2+ [24], etc, owing to the high negative charge on its surface. [25,26] When PA is complexed with metal, a layer of dense single molecule protective lm can be formed on the metal surface by the produced complexing rings, which can effectively inhibit the penetration of corrosive ions and delay the corrosion of metal.…”

Section: Introductionmentioning

confidence: 99%

Preparation and study of modified phytic acid/epoxy resin anti-corrosion coating

Ju,

Wang,

et al. 2023

Colloid Polym Sci

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The anti-corrosion epoxy-based coating is crucial for industrial development. Improvement of the anticorrosion of epoxy-based coatings through a simple, effective and eco-friendly way is of great signi cance. Phytic acid (PA) is a kind of natural and eco-friendly corrosion inhibitor, however, the compatibility problem between PA and epoxy resin (EP) is not good. This problem is addressed by the modi cation of PA in this paper. PA is grafted to ethylene glycol diglycidyl ether (EGDE) to obtain modi ed PA (PA-EGDE) by the catalysis of tetrabutylammonium bromide under mild conditions. Subsequently, PA-EGDE is added to EP to prepare PA-EGDE/EP coatings. When the PA-EGDE loading is 5 wt%, the PA-EGDE/EP coating exhibits excellent mechanical and anti-corrosion properties. The hardness, exibility and shock resistance are 2H, 1mm and 50cm, respectively, which are as good as those of pure EP coating. The E corr value of PA-EGDE/EP coating at 5 wt% PA-EGDE loading is -0.620 eV, which is much higher than that of EP coating (-0.797 eV); the impedance modulus is 10 8 Ω•cm 2 after immersion in 3.5 wt% NaCl aqueous solution for 30 days, which is much bigger than that of EP coating (10 6 Ω•cm 2 ).Otherwise, the anti-corrosion mechanism of PA in EP coating is thoroughly discussed.

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Section: Introductionmentioning

confidence: 99%

Preparation and study of modified phytic acid/epoxy resin anti-corrosion coating

Ju,

Wang,

et al. 2023

Colloid Polym Sci

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show abstract

Corrosion: Structural Characterization of Products

Waseda¹,

Suzuki²

2016

Encyclopedia of Iron, Steel, and Their Alloys

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Preparation and study of modified phytic acid/epoxy resin anti-corrosion coating

Ju,

Wang,

et al. 2023

Preprint

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The anti-corrosion epoxy-based coating is crucial for industrial development. Improvement of the anti-corrosion of epoxy-based coatings through a simple, effective and eco-friendly way is of great significance. Phytic acid (PA) is a kind of natural and eco-friendly corrosion inhibitor, however, the compatibility problem between PA and epoxy resin (EP) is not good. This problem is addressed by the modification of PA in this paper. PA is grafted to ethylene glycol diglycidyl ether (EGDE) to obtain modified PA (PA-EGDE) by the catalysis of tetrabutylammonium bromide under mild conditions. Subsequently, PA-EGDE is added to EP to prepare PA-EGDE/EP coatings. When the PA-EGDE loading is 5 wt%, the PA-EGDE/EP coating exhibits excellent mechanical and anti-corrosion properties. The hardness, flexibility and shock resistance are 2H, 1mm and 50cm, respectively, which are as good as those of pure EP coating. The Ecorr value of PA-EGDE/EP coating at 5 wt% PA-EGDE loading is -0.620 eV, which is much higher than that of EP coating (-0.797 eV); the impedance modulus is 108 Ω·cm2 after immersion in 3.5 wt% NaCl aqueous solution for 30 days, which is much bigger than that of EP coating (106 Ω·cm2). Otherwise, the anti-corrosion mechanism of PA in EP coating is thoroughly discussed.

show abstract

Influence of tungstate ions on transformation of green rust to ferric oxyhydroxide via aqueous solution investigated by in situ X-ray absorption spectroscopy

Cited by 3 publications

References 34 publications

Preparation and study of modified phytic acid/epoxy resin anti-corrosion coating

Preparation and study of modified phytic acid/epoxy resin anti-corrosion coating

Corrosion: Structural Characterization of Products

Preparation and study of modified phytic acid/epoxy resin anti-corrosion coating

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