Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties
Microspheres constructed with α-FeOOH nanorods were fabricated by a sodium dodecylbenzenesulfonate (SDBS) assisted hydrolysis process in an ethanol/H2O co-solvent system, and could be transformed into hollow microspheres constructed with α-Fe2O3 nanorods by calcining in air at 600 °C for 2 h. α-Fe2O...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/83450 http://hdl.handle.net/10220/42583 |
| _version_ | 1826110117840420864 |
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| author | Song, Hao-Jie Jia, Xiao-Hua Qi, Huan Yang, Xiao-Fei Tang, Hua Min, Chun-Ying |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Song, Hao-Jie Jia, Xiao-Hua Qi, Huan Yang, Xiao-Fei Tang, Hua Min, Chun-Ying |
| author_sort | Song, Hao-Jie |
| collection | NTU |
| description | Microspheres constructed with α-FeOOH nanorods were fabricated by a sodium dodecylbenzenesulfonate (SDBS) assisted hydrolysis process in an ethanol/H2O co-solvent system, and could be transformed into hollow microspheres constructed with α-Fe2O3 nanorods by calcining in air at 600 °C for 2 h. α-Fe2O3 hierarchical hollow microspheres with size about 320 nm in diameter were constructed by the radically oriented single-crystalline nanorods with length and diameter of about 20–40 nm and 15–20 nm, respectively. The investigation on the evolution formation revealed that SDBS was critical for controlling the assembly of the freshly formed nanocrystallites, and hollowing formation was proven to be the Ostwald ripening process by tracking the structure of the products at different growth stages. Scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy were used to characterize the structure of the synthesized products. An investigation of the gas-sensing properties showed that α-Fe2O3 hierarchical hollow spheres exhibited high gas response to ethanol at the optimum working temperature of 300 °C. |
| first_indexed | 2024-10-01T02:29:11Z |
| format | Journal Article |
| id | ntu-10356/83450 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:29:11Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/834502020-06-01T10:13:36Z Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties Song, Hao-Jie Jia, Xiao-Hua Qi, Huan Yang, Xiao-Fei Tang, Hua Min, Chun-Ying School of Materials Science & Engineering gas-sensing properties hierarchical hollow microspheres Microspheres constructed with α-FeOOH nanorods were fabricated by a sodium dodecylbenzenesulfonate (SDBS) assisted hydrolysis process in an ethanol/H2O co-solvent system, and could be transformed into hollow microspheres constructed with α-Fe2O3 nanorods by calcining in air at 600 °C for 2 h. α-Fe2O3 hierarchical hollow microspheres with size about 320 nm in diameter were constructed by the radically oriented single-crystalline nanorods with length and diameter of about 20–40 nm and 15–20 nm, respectively. The investigation on the evolution formation revealed that SDBS was critical for controlling the assembly of the freshly formed nanocrystallites, and hollowing formation was proven to be the Ostwald ripening process by tracking the structure of the products at different growth stages. Scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy were used to characterize the structure of the synthesized products. An investigation of the gas-sensing properties showed that α-Fe2O3 hierarchical hollow spheres exhibited high gas response to ethanol at the optimum working temperature of 300 °C. 2017-06-06T04:44:54Z 2019-12-06T15:23:15Z 2017-06-06T04:44:54Z 2019-12-06T15:23:15Z 2012 2012 Journal Article Song, H.-J., Jia, X.-H., Qi, H., Yang, X.-F., Tang, H., & Min, C.-Y. (2012). Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties. Journal of Materials Chemistry, 22(8), 3508-3516. 0959-9428 https://hdl.handle.net/10356/83450 http://hdl.handle.net/10220/42583 10.1039/C2JM13574D 201353 en Journal of Materials Chemistry © 2012 The Royal Society of Chemistry. |
| spellingShingle | gas-sensing properties hierarchical hollow microspheres Song, Hao-Jie Jia, Xiao-Hua Qi, Huan Yang, Xiao-Fei Tang, Hua Min, Chun-Ying Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties |
| title | Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties |
| title_full | Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties |
| title_fullStr | Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties |
| title_full_unstemmed | Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties |
| title_short | Flexible morphology-controlled synthesis of monodisperse α-Fe2O3 hierarchical hollow microspheres and their gas-sensing properties |
| title_sort | flexible morphology controlled synthesis of monodisperse α fe2o3 hierarchical hollow microspheres and their gas sensing properties |
| topic | gas-sensing properties hierarchical hollow microspheres |
| url | https://hdl.handle.net/10356/83450 http://hdl.handle.net/10220/42583 |
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