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Performance evaluation of mercapto functional hybrid silica sol-gel coating and its synergistic effect with f-GNs for corrosion protection of copper surface
Tian, Shu; Liu, Zhixiong; Shen, Luli; Pu, Jibin; Liu, Wenqing; Sun, Xiaofeng; Li, Zhanming
2018
发表期刊RSC ADVANCES
卷号8期号:14页码:7438-7449
摘要A nanocomposite coating comprising mercapto functional hybrid silica sol-gel coating and functionalized graphene nanoplates nanocomposite coatings with advanced anticorrosive properties was prepared by a sol-gel method. In this study, graphene oxide (GO) nanoplates were silanized using 3-aminopropyltriethoxysilane (APTES) to obtain functional graphene nanoplates (f-GNs). The f-GNs were characterized by FTIR, XRD, XPS, TEM, AFM and TGA techniques. The functionalized graphene nanoplates were chemically bonded to a sol-gel matrix and showed good dispersion in the sol. Then, silica hybrid sol-gel nanocomposites with raw GO and different amounts of f-GNs were applied on the copper surface. Uniform, defect-free and adherent sol-gel films were obtained. Various corresponding methods were used to investigate the nanocomposite coating's properties. The corrosion resistance of copper significantly improved after being coated with mercapto functional hybrid silica sol-gel. The addition of f-GNs to the mercapto functional silica sol-gel coatings further improved the corrosion resistance due to a synergistic effect. Moreover, with an increase in the amount of f-GNs in the nanocomposite coating, the nanocomposite showed improved corrosion resistance. The nanocomposite containing 0.1 wt% f-GNs can efficiently protect the copper substrate from corrosion. This improvement was primarily attributed to the homogeneous dispersion of the f-GNs in the silica gel matrix and their effective barrier against corrosive molecules and ions. However, adding raw GO or excess f-GNs to the silica hybrid sol-gel coating had a negative effect on the corrosion resistance.
关键词Graphene Oxide Composite Coatings In-situ Nanocomposite Fabrication Inhibition Metals Nanoparticles Bronze Brass
学科领域Chemistry
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16919
专题2018专题
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GB/T 7714
Tian, Shu,Liu, Zhixiong,Shen, Luli,et al. Performance evaluation of mercapto functional hybrid silica sol-gel coating and its synergistic effect with f-GNs for corrosion protection of copper surface[J]. RSC ADVANCES,2018,8(14):7438-7449.
APA Tian, Shu.,Liu, Zhixiong.,Shen, Luli.,Pu, Jibin.,Liu, Wenqing.,...&Li, Zhanming.(2018).Performance evaluation of mercapto functional hybrid silica sol-gel coating and its synergistic effect with f-GNs for corrosion protection of copper surface.RSC ADVANCES,8(14),7438-7449.
MLA Tian, Shu,et al."Performance evaluation of mercapto functional hybrid silica sol-gel coating and its synergistic effect with f-GNs for corrosion protection of copper surface".RSC ADVANCES 8.14(2018):7438-7449.
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