| Microwave hydrothermal synthesis and characterization of rare-earth stannate nanoparticles |
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| 作者姓名： | Shuang Huang Hua-lan Xu Sheng-liang Zhong Lei Wang |
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| 作者单位： | College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China;the Jiangxi Provincial Department of Science and Technology |
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| 摘 要： | Rare-earth stannate (Ln2Sn2O7 (Ln=Y, La-Lu)) nanocrystals with an average diameter of 50 nm were prepared through a facile microwave hydrothermal method at 200℃ within 60 min. The products were well characterized. The effect of reaction parameters such as temperature, reaction time, pH value, and alkali source on the preparation was investigated. The results revealed that the pH value plays an important role in the formation process of gadolinium stannate (Gd2Sn2O7) nanoparticles. By contrast, the alkali source had no effect on the phase composition or morphology of the final product. Uniform and sphere-like nanoparticles with an average size of approximately 50 nm were obtained at the pH value of 11.5. A possible formation mechanism was briefly proposed. Gd2Sn2O7:Eu3+ nanoparticles displayed strong orange-red emission. Magnetic measurements revealed that Gd2Sn2O7 nanoparticles were paramagnetic. The other rare-earth stannate Ln2Sn2O7 (Ln=Y, La-Lu) nanocrystals were prepared by similar approaches.
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| 关 键 词： | microwave hydrothermal synthesis rare-earth stannate nanoparticles |
Microwave hydrothermal synthesis and characterization of rare-earth stannate nanoparticles |
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| Shuang Huang,Hua-lan Xu,Sheng-liang Zhong,Lei Wang.Microwave hydrothermal synthesis and characterization of rare-earth stannate nanoparticles[J].International Journal of Minerals,Metallurgy and Materials,2017,24(7):794-803. |
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| Authors: | Shuang Huang Hua-lan Xu Sheng-liang Zhong Lei Wang |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;2. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;Analytical and Testing Center, Jiangxi Normal University, Nanchang 330022, China |
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| Abstract: | Rare-earth stannate (Ln2Sn2O7 (Ln = Y, La–Lu)) nanocrystals with an average diameter of 50 nm were prepared through a facile microwave hydrothermal method at 200°C within 60 min. The products were well characterized. The effect of reaction parameters such as temperature, reaction time, pH value, and alkali source on the preparation was investigated. The results revealed that the pH value plays an important role in the formation process of gadolinium stannate (Gd2Sn2O7) nanoparticles. By contrast, the alkali source had no effect on the phase composition or morphology of the final product. Uniform and sphere-like nanoparticles with an average size of approximately 50 nm were obtained at the pH value of 11.5. A possible formation mechanism was briefly proposed. Gd2Sn2O7:Eu3+ nanoparticles displayed strong orange-red emission. Magnetic measurements revealed that Gd2Sn2O7 nanoparticles were paramagnetic. The other rare-earth stannate Ln2Sn2O7 (Ln = Y, La–Lu) nanocrystals were prepared by similar approaches. |
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| Keywords: | microwave hydrothermal synthesis rare-earth stannate nanoparticles |
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