BTA loaded in various CeO2 nanocontainers in epoxy coating for long-term anticorrosion of low carbon steel

To figure out the behavior of benzotriazole (BTA) loaded in CeO2 nanocontainers during long term anticorrosion, three kinds of CeO2 spheres were used: hollow spheres (HSs), double-shell hollow spheres (DHSs), and solid-mesoporous spheres (SSs). The BTA loading and releasing situations were checked,...

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Veröffentlicht in:Progress in organic coatings 2022-11, Vol.172, p.107156, Article 107156
Hauptverfasser: Yang, Jingxia, Zou, Bingjie, Fang, Qing, Wang, Jinjie, Wang, Lidong
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Sprache:eng
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Zusammenfassung:To figure out the behavior of benzotriazole (BTA) loaded in CeO2 nanocontainers during long term anticorrosion, three kinds of CeO2 spheres were used: hollow spheres (HSs), double-shell hollow spheres (DHSs), and solid-mesoporous spheres (SSs). The BTA loading and releasing situations were checked, and CeO2-HSs exhibited the largest BTA loading amount of 12.5 wt%, forming by both chemical and physical adsorption. The highest BTA loading in CeO2-HSs may be attributed to its hollow structure and more Ce3+ sites (39 %) for BTA anchoring. Thus, CeO2-HSs@BTA exhibited an excellent long-term anticorrosion in epoxy coating for low carbon steel protection, showing no rusting after 40 days of salt spray experiment.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2022.107156