Microwave-assisted rapid synthesis and photocatalytic activity of mesoporous Nd-doped SrTiO3 nanospheres and nanoplates
| Autor: | Ying-Jie Zhu, Feng Chen, Bing-Qiang Lu, Jingsan Xu, Chao Qi, Jian-Qiang Zheng, Jin Wu |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Mechanical Engineering Doping Nanotechnology Condensed Matter Physics Titanate chemistry.chemical_compound chemistry Mechanics of Materials Photocatalysis Degradation (geology) General Materials Science Irradiation Mesoporous material Ethylene glycol Methylene blue Nuclear chemistry |
| Zdroj: | Materials Letters. 100:62-65 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2013.02.107 |
| Popis: | Mesoporous Nd-doped SrTiO 3 nanospheres and nanoplates with high specific surface areas have been successfully synthesized using tetra-n-butyl titanate, Sr(NO 3 ) 2 , Nd(NO 3 ) 3 and NaOH in mixed solvents of ethylene glycol and deionized water by a rapid microwave-assisted solvothermal method at 200 °C for 10 min. Mesoporous Nd-doped SrTiO 3 nanospheres are obtained at lower concentrations of the reactants. However, the product undergoes a dramatic morphological change from nanosphere to nanoplate when the concentrations of the reactants are increased. The photocatalytic activities of the samples for the degradation of methylene blue under simulated solar light irradiation ( λ >290 nm) and visible light irradiation ( λ >420 nm) are also evaluated. Both the mesoporous Nd-doped SrTiO 3 nanospheres and nanoplates show higher photocatalytic activities than that of the commercial TiO 2 (P25) under visible light irradiation. |
| Databáze: | OpenAIRE |
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