| 银离子在二氧化硅粒子表面上的成核反应 |
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| 引用本文： | 蒋仲杰,刘春艳,刘云. 银离子在二氧化硅粒子表面上的成核反应[J]. 影像科学与光化学, 2003, 21(3): 169-175. DOI: 10.7517/j.issn.1674-0475.2003.03.169 |
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| 作者姓名： | 蒋仲杰 刘春艳 刘云 |
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| 作者单位： | 中国科学院, 理化技术研究所, 北京, 100101 |
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| 摘 要： | 在含有乙醇的SiO2溶胶中,Ag+不管在碱性、中性或在弱碱、弱酸情况下都能在SiO2粒子表面上还原成核,形成金属Ag颗粒.研究表明,银的等离子体共振吸收峰的移动是尺寸效应和表面效应共同作用的结果.
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| 关 键 词： | SiO2溶胶 Ag纳米粒子 等离子体共振吸收 |
| 收稿时间： | 2002-11-22 |
THE REDUCTION REACTION OF SILVER IONS ON THE SURFACE OF SILICA |
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| JIANG Zhong-jie,LIU Chun-yan,LIU Yun. THE REDUCTION REACTION OF SILVER IONS ON THE SURFACE OF SILICA[J]. Imaging Science and Photochemistry, 2003, 21(3): 169-175. DOI: 10.7517/j.issn.1674-0475.2003.03.169 |
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| Authors: | JIANG Zhong-jie LIU Chun-yan LIU Yun |
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| Affiliation: | Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P.R.China |
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| Abstract: | In weak acidic,neutral,weak basic or basic water alcohol solution,silver nanoparticles are generated on silica colloidal particles by the reduction of Ag+ ions.The plasmon band of silver particles supported on the surface of silica considerably shifted to longer wavelength compared with the pure silver sol.The shift in absorption spectra of the silver plasmon band is explained in terms of surface effects and size effects. |
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| Keywords: | silica colloid silver nanoparticle plasmon band |
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