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Updated: Aug 25, 2025
Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
Published on: November 15, 2016
Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe2O3 Nanoparticles
Hewei Wang1, Peiyang Shi1, Junxiang Ning1
1Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China.
Abstract:
La-doped α-Fe2O3 nanoparticles were synthesized by a hydrothermal method. The effects of pH value on the morphology, structure, and electrochemical stability of the La-doped α-Fe2O3 nanoparticles were investigated by X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectrum, and electrochemical methods. The results show that the La-doped α-Fe2O3 nanoparticles exhibit a uniform spherical morphology at pH = 6, and are agglomerated with a poor dispersion at pH = 4 and 8. The iron oxide lattice is distorted by the La-doping, which increases the Fe-O bond strength. The decreased Fe-O bond length and the increased Fe-O bond energy at pH = 6 improve the electrochemical stability of α-Fe2O3. The waterborne coating modified with La-doped α-Fe2O3 nanoparticles exhibits a steady corrosion resistance.
