| 金/二氧化硅中空核壳纳米球的制备与表征 |
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| 引用本文： | 余洁,李为娇,赵玥萍,刘自纯,李文嘉,沈爱国,叶勇.金/二氧化硅中空核壳纳米球的制备与表征[J].湖北大学学报(自然科学版),2011,33(1):76-79. |
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| 作者姓名： | 余洁 李为娇 赵玥萍 刘自纯 李文嘉 沈爱国 叶勇 |
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| 作者单位： | 1. 湖北大学化学化工学院,湖北,武汉,430062
2. 武汉大学分析测试中心,湖北,武汉,430072 |
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| 基金项目： | 国家自然科学基金项目，湖北省自然科学基金项目 |
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| 摘 要： | 采用水热反应法和正硅酸乙酯水解法制备出核壳结构的Au/C纳米球颗粒以及夹层结构的Au/C/SiO<,2>纳米球颗粒,在空气中锻烧将Au/C/SiO<,2>夹层结构中的碳层除去,得到内部带有可移动纳米金核、壳层厚度约为20 nM的中空Au/SiO<,2>纳米球颗粒.用透射电子显微镜对所制得的纳米微球的形貌进行表征,并用红...
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| 关 键 词： | 核壳结构 中空纳米球 纳米颗粒 TEOS |
Synthesis and characterization of hollow core-shell Au/SiO2 spheres nanoparticles |
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| YU Jie,LI Weijiao,ZHAO Yueping,LIU Zichun,LI Wenjia,SHEN Aiguo,YE Yong.Synthesis and characterization of hollow core-shell Au/SiO2 spheres nanoparticles[J].Journal of Hubei University(Natural Science Edition),2011,33(1):76-79. |
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| Authors: | YU Jie LI Weijiao ZHAO Yueping LIU Zichun LI Wenjia SHEN Aiguo YE Yong |
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| Institution: | 1.College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China;2.Analysis and Testing Center,Wuhan University,Wuhan 430072,China) |
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| Abstract: | Core-shell structure of Au/C nanoparticles and silica coated Au/C nanoparticles（Au/C/SiO2 NPs） were prepared by dehydration technique and hydrolysis.Hollow silica nanoparticles with a shell thickness of 20 nm and with movable Au cores inside（Au/air/SiO2 NPs） were further obtained by calcinating carbon shell within Au/C/SiO2 NPs in the air.The morphologies of those obtained nanoparticles were characterized by transmission electron microscopy（TEM）,and its structure was characterized by IR spectroscopy,ultraviolet spectrophotometer and EDX measurement.Good-quality SERS spectra of 5-fluorouracil on this Au/air/SiO2 NPs were observed. |
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| Keywords: | TEOS |
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