Synthesis and photoactivity of hetero-nanostructured SrTiO3
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- LEE Duk Kyu
- Department of Materials Science & Engineering, College of Engineering, Seoul National University Ceramic Research & Development division, Dongil Technology Ltd
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- CHO In-Sun
- Department of Materials Science & Engineering, College of Engineering, Seoul National University
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- YIM Dong Kyun
- Department of Materials Science & Engineering, College of Engineering, Seoul National University
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- NOH Jun-Hong
- Department of Materials Science & Engineering, College of Engineering, Seoul National University
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- HONG Kug Sun
- Department of Materials Science & Engineering, College of Engineering, Seoul National University
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- KIM Dong-Wan
- Division of Chemical Engineering and Materials Science & Engineering, Ajou University
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Abstract
A SrTiO3 hetero-nanostructure was synthesized via solvothermal reaction using a protonated trititanate nanowire (H2Ti3O7) and strontium hydroxide octahydrate (Sr(OH)2·8H2O) in an ethanol/water mixed solvent system. The ethanol to deionized water volume ratio was the controlling parameters for determining the phase formation and the particle size of the SrTiO3 nanocrystals. Single-phase cubic perovskite SrTiO3 began to form at 120°C in a mixed solvent containing >40% ethanol by volume. Field emission scanning electron microscopy (FE-SEM) and high resolution transmission electron microscopy (HRTEM) showed that the as-prepared SrTiO3 retained its wire-like (1D) morphology with nanocrystals (0D) on the surface. The synthetic mechanism of the 0D-1D SrTiO3 hetero-nanostructures was demonstrated by topochemical reaction from dielectric tuning of the mixed solvent and the correlation between the crystal structures of SrTiO3 and H2Ti3O7. Using as-prepared SrTiO3 nanowires, the photocatalytic activity for the degradation of a rhodamine B dye solution was evaluated under UV irradiation and compared to SrTiO3 powder from solid state reaction.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 118 (1382), 876-880, 2010
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680262422400
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- NII Article ID
- 130000420707
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 10831952
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed