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标题：Corrosion Inhibitor Release from Zn-Al-[PO43-]-[CO32-] Layered Double Hydroxide Nanoparticles
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作者：E. Alibakhshi ; E. Ghasemi ; M. Mahdavian 等
期刊名称：Progress in Color, Colorants and Coatings
印刷版ISSN：2008-2134
电子版ISSN：2383-1790
出版年度：2016
卷号：9
期号：4
页码：233-248
出版社：Institute for Color Science and Technology
摘要：Zn-Al layered double hydroxide (LDH) nanoparticles with carbonate as the charge balancing anion in the interlayer space were synthesized using co-precipitation method. Then, the carbonate base Zn-Al LDH nanoparticles were doped with phosphate ion via anion-exchange reaction to synthesize Zn-Al-[PO43-]-[CO32-]. The structure and composition were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and thermal gravimetric-differential thermal analysis (TG-DTA). Inductively coupled plasma-optical emission spectrometer (ICP-OES) was employed to measure the phosphate release ability of Zn-Al-[PO43-]-[CO32-] in the 3.5 wt% NaCl solution. Results showed that zinc cation can release along with phosphate anion during ion exchange process. Then, the corrosion inhibition of phosphate anion and zinc cation on mild steel specimens was assessed by electrochemical impedance spectroscopy (EIS) and polarization. Field emission-scanning electron microscopy (FE-SEM) was used to study the surface morphology of the mild steel specimens after exposure to the test solutions. The results indicated the significant impact of zinc and phosphorus concentration in test solution on the corrosion inhibition properties. Prog. Color Colorants Coat. 9 (2016), 231-246© Institute for Color Science and Technology.
关键词：Layered double hydroxide;Ion Exchange;phosphate;Corrosion Inhibition