Nanofibers of barium strontium titanate (BST) by sol-gel processing and electrospinning
| Autor: | Jinda Khemprasit, Paveena Laokul, Wiwat Nuansing, Santi Maensiri, Jutharatana Klinkaewnarong |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Mineralogy chemistry.chemical_element Barium Titanate Electrospinning Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Biomaterials chemistry.chemical_compound Perovskite Colloid and Surface Chemistry chemistry Chemical engineering law Nanofiber Barium titanate Calcination Sol-gel |
| Zdroj: | Journal of colloid and interface science. 297(2) |
| ISSN: | 0021-9797 |
| Popis: | This paper describes the fabrication of barium strontium titanate (Ba0.6Sr0.4TiO3 or BST) nanofibers by electrospinning method using a solution that contained poly(vinylpyrrolidone) and a sol–gel solution of BST. The as-spun and calcined BST/PVP composite nanofibers were characterized by TG-DTA, X-ray diffraction, FT-IR, SEM and TEM, respectively. After calcination of the as-spun BST/PVP composite nanofibers at above 700 °C in air for 2 h, BST nanofibers of 188 ± 25 nm in diameter having well-developed cubic-perovskite structure were successfully obtained. The crystal structure and morphology of the nanofibers were influenced by the calcination temperature. Calcination at below 700 °C resulted in amorphous phase whereas BST with second phase such as barium titanate were formed at above 700 °C. Diameters of the nanofibers decreased from 208 ± 35 to 161 ± 18 nm with increasing calcination temperature between 600 and 800 °C. |
| Databáze: | OpenAIRE |
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