Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles
La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles were synthesized by a hydrothermal method. The effects of pH value on the morphology, structure, and electrochemical stability of the La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles were investi...
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MDPI AG
2022-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/19/3346 |
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| author | Hewei Wang Peiyang Shi Junxiang Ning |
| author_facet | Hewei Wang Peiyang Shi Junxiang Ning |
| author_sort | Hewei Wang |
| collection | DOAJ |
| description | La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles were synthesized by a hydrothermal method. The effects of pH value on the morphology, structure, and electrochemical stability of the La-doped α-Fe<sub>2</sub>O<sub>3</sub> 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-Fe<sub>2</sub>O<sub>3</sub> 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-Fe<sub>2</sub>O<sub>3</sub>. The waterborne coating modified with La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles exhibits a steady corrosion resistance. |
| first_indexed | 2024-03-09T21:21:49Z |
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| id | doaj.art-7d06f5dc8d0d4227a7554b7472f78445 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T21:21:49Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj.art-7d06f5dc8d0d4227a7554b7472f784452023-11-23T21:18:35ZengMDPI AGNanomaterials2079-49912022-09-011219334610.3390/nano12193346Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> NanoparticlesHewei Wang0Peiyang Shi1Junxiang Ning2Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, ChinaLa-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles were synthesized by a hydrothermal method. The effects of pH value on the morphology, structure, and electrochemical stability of the La-doped α-Fe<sub>2</sub>O<sub>3</sub> 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-Fe<sub>2</sub>O<sub>3</sub> 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-Fe<sub>2</sub>O<sub>3</sub>. The waterborne coating modified with La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles exhibits a steady corrosion resistance.https://www.mdpi.com/2079-4991/12/19/3346pH valueLa-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticleelectrochemical stabilitycorrosion resistance |
| spellingShingle | Hewei Wang Peiyang Shi Junxiang Ning Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles Nanomaterials pH value La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticle electrochemical stability corrosion resistance |
| title | Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles |
| title_full | Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles |
| title_fullStr | Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles |
| title_full_unstemmed | Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles |
| title_short | Synthesis, Characterization, and Electrochemical Properties of La-Doped α-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles |
| title_sort | synthesis characterization and electrochemical properties of la doped α fe sub 2 sub o sub 3 sub nanoparticles |
| topic | pH value La-doped α-Fe<sub>2</sub>O<sub>3</sub> nanoparticle electrochemical stability corrosion resistance |
| url | https://www.mdpi.com/2079-4991/12/19/3346 |
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