阿拉伯胶-银纳米粒子复合材料作为一种绿色的防腐蚀剂，用于强酸介质中的钢腐蚀。
Gum Arabic-silver nanoparticles composite as a green anticorrosive formulation for steel corrosion in strong acid media.
机构信息
Corrosion Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Duzce University, 81620 Duzce, Turkey.
Corrosion Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Duzce University, 81620 Duzce, Turkey.
出版信息
Carbohydr Polym. 2018 Feb 1;181:43-55. doi: 10.1016/j.carbpol.2017.10.051. Epub 2017 Oct 14.
A green anticorrosive composite (GA-AgNPs) has been formulated for steel in 15% HCl and 15% HSO media. Characterization of GA-AgNPs is achieved via FTIR, UV-vis, EDAX, and SEM. Gravimetric, electrochemical (EIS, EFM, DEIS, & TP), and surface assessment (SEM, EDAX, AFM, & XPS) techniques have been deployed in the anticorrosion studies. Results from all applied methods potray GA-AgNPs as effective anticorrosive agent. Inhibition is by adsorption mechanism and follows Langmuir isotherm. GA-AgNPs acts as mixed type inhibitor in 15% HSO solution but as anodic type in 15% HCl solution. Results from surface techniques confirm adsorption of GA-AgNPs molecules on specimen surface. Oxides, hydroxides, carbonates, and sulphates (HSO medium) or chlorides (HCl medium) are the corrosion products in the free corrodent according to XPS results. In the presence of composite, both ionic and neutral forms of GA-AgNPS are adsorbed. AgNPs are present on the surface in the form: Ag°, AgO, and AgO.
已在 15% HCl 和 15% HSO 介质中为钢配制了绿色防腐复合材料 (GA-AgNPs)。通过 FTIR、UV-vis、EDAX 和 SEM 对 GA-AgNPs 进行了表征。在防腐研究中，使用了重量法、电化学（EIS、EFM、DEIS 和 TP）和表面评估（SEM、EDAX、AFM 和 XPS）技术。所有应用方法的结果都表明 GA-AgNPs 是一种有效的防腐剂。抑制作用是通过吸附机制并遵循 Langmuir 等温线。GA-AgNPs 在 15% HSO 溶液中作为混合抑制剂，但在 15% HCl 溶液中作为阳极抑制剂。表面技术的结果证实了 GA-AgNPs 分子在试样表面的吸附。根据 XPS 结果，氧化物、氢氧化物、碳酸盐和硫酸盐（HSO 介质）或氯化物（HCl 介质）是游离腐蚀剂中的腐蚀产物。在复合材料存在的情况下，GA-AgNPS 的离子和中性形式都被吸附。AgNPs 以 Ag°、AgO 和 AgO 的形式存在于表面。
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