Synthesis, inhibition behavior and recycling of Fe3O4@ZnAl-MoO4 LDH nanocomposite inhibitor
作者： Xin Liu , Jihui Wang , Wenbin Hu
DOI: 10.1016/J.JALLCOM.2019.06.118
关键词:
摘要: Abstract The nanocomposite corrosion inhibitor with MoO42− intercalated ZnAl-LDH coating on the Fe3O4 surface was synthesized by ion exchange methods. morphology, structure and magnetic properties of composite were characterized transmission electron microscope, X-ray diffraction, Fourier transform infrared spectra vibrating sample magnetometer. release behavior inhibition under “NO MF” (without external field) “MF ON” modes (under measured UV–vis spectroscopy, electrochemical tests scanning microscopy. Calcination after test redispersing sintered products in Na2MoO4 solution, regenerated. results show that superparamagnetic Fe3O4@MoO4-LDH presents well-defined core-shell structure. revealed for mode from displayed smaller t0.5 (Time to reach half equilibrium) 4.25min shorter time (3 h) equilibrium high amount 71.95% 0.5 g/L nanocomposite. Under rate is slower longer (from 26.40min 1.60 h 4.0 g/L nanocomposite, respectively), thus realizing sustained up 12 h. At same time, decreases prolongs concentration increasing. Correspondingly, has a long-term excellent effect over 71.96% at 24 h Q235 steel. For MF”, route mainly contains interlayer intraparticle diffusion between LDH layers interparticle among outer LDH. While mode, particles becomes important. reconstructed still maintains efficiency, 64.84% five cycles.
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