Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects
Substantial effort has been devoted to fabricating nanocrystalline lanthanum ferrite (LaFeO<sub>3</sub>), and calcination is the crucial process of crystallization in both high-temperature strategies and wet chemical methods. Lowering the calcination temperature gives the ability to resi...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/19/5534 |
| _version_ | 1797516139329224704 |
|---|---|
| author | Wen Jiang Liwei Cheng Jianghui Gao Shiyu Zhang Hao Wang Zhihao Jin Zhongfeng Tang Cheng Peng |
| author_facet | Wen Jiang Liwei Cheng Jianghui Gao Shiyu Zhang Hao Wang Zhihao Jin Zhongfeng Tang Cheng Peng |
| author_sort | Wen Jiang |
| collection | DOAJ |
| description | Substantial effort has been devoted to fabricating nanocrystalline lanthanum ferrite (LaFeO<sub>3</sub>), and calcination is the crucial process of crystallization in both high-temperature strategies and wet chemical methods. Lowering the calcination temperature gives the ability to resist the growth and agglomeration of nanoparticles, therefore contributing to preserve their unique nanostructures and properties. In this work, we prepared crystalline LaFeO<sub>3</sub> nanoparticles with a calcination process at 500 °C, lower than the calcination temperature required in most wet chemistry methods. Correspondingly, the experimental conditions, including stoichiometric ratios, pH values, precipitants, complexant regent, and the calcination temperatures, were investigated. We found that the crystalline LaFeO<sub>3</sub> was formed with crystalline NaFeO<sub>2</sub> after calcination at 500 °C. Furthermore, the structure of FeO<sub>6</sub> octahedra that formed in coprecipitation was associated with the process of crystallization, which was predominantly determined by calcination temperature. Moreover, an illusion of pure-phase LaFeO<sub>3</sub> was observed when investigated by X-ray diffraction spectroscopy, which involves amorphous sodium ferrite or potassium ferrite, respectively. These findings can help prepare nanostructured perovskite oxides at low calcination temperatures. |
| first_indexed | 2024-03-10T06:57:05Z |
| format | Article |
| id | doaj.art-8cdbbeb15a394d53be9a5ad24b6dc33f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:57:05Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-8cdbbeb15a394d53be9a5ad24b6dc33f2023-11-22T16:23:16ZengMDPI AGMaterials1996-19442021-09-011419553410.3390/ma14195534Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter EffectsWen Jiang0Liwei Cheng1Jianghui Gao2Shiyu Zhang3Hao Wang4Zhihao Jin5Zhongfeng Tang6Cheng Peng7College of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, ChinaKey Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaCollege of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, ChinaKey Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaSubstantial effort has been devoted to fabricating nanocrystalline lanthanum ferrite (LaFeO<sub>3</sub>), and calcination is the crucial process of crystallization in both high-temperature strategies and wet chemical methods. Lowering the calcination temperature gives the ability to resist the growth and agglomeration of nanoparticles, therefore contributing to preserve their unique nanostructures and properties. In this work, we prepared crystalline LaFeO<sub>3</sub> nanoparticles with a calcination process at 500 °C, lower than the calcination temperature required in most wet chemistry methods. Correspondingly, the experimental conditions, including stoichiometric ratios, pH values, precipitants, complexant regent, and the calcination temperatures, were investigated. We found that the crystalline LaFeO<sub>3</sub> was formed with crystalline NaFeO<sub>2</sub> after calcination at 500 °C. Furthermore, the structure of FeO<sub>6</sub> octahedra that formed in coprecipitation was associated with the process of crystallization, which was predominantly determined by calcination temperature. Moreover, an illusion of pure-phase LaFeO<sub>3</sub> was observed when investigated by X-ray diffraction spectroscopy, which involves amorphous sodium ferrite or potassium ferrite, respectively. These findings can help prepare nanostructured perovskite oxides at low calcination temperatures.https://www.mdpi.com/1996-1944/14/19/5534crystalline LaFeO<sub>3</sub> nanoparticlescoprecipitationcalcinationFeO<sub>6</sub> octahedraperovskite |
| spellingShingle | Wen Jiang Liwei Cheng Jianghui Gao Shiyu Zhang Hao Wang Zhihao Jin Zhongfeng Tang Cheng Peng Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects Materials crystalline LaFeO<sub>3</sub> nanoparticles coprecipitation calcination FeO<sub>6</sub> octahedra perovskite |
| title | Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects |
| title_full | Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects |
| title_fullStr | Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects |
| title_full_unstemmed | Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects |
| title_short | Preparation of Crystalline LaFeO<sub>3</sub> Nanoparticles at Low Calcination Temperature: Precursor and Synthesis Parameter Effects |
| title_sort | preparation of crystalline lafeo sub 3 sub nanoparticles at low calcination temperature precursor and synthesis parameter effects |
| topic | crystalline LaFeO<sub>3</sub> nanoparticles coprecipitation calcination FeO<sub>6</sub> octahedra perovskite |
| url | https://www.mdpi.com/1996-1944/14/19/5534 |
| work_keys_str_mv | AT wenjiang preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT liweicheng preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT jianghuigao preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT shiyuzhang preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT haowang preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT zhihaojin preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT zhongfengtang preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects AT chengpeng preparationofcrystallinelafeosub3subnanoparticlesatlowcalcinationtemperatureprecursorandsynthesisparametereffects |