| 电解法制备棒状金纳米粒子溶胶 |
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| 引用本文： | 齐航,朱涛,刘忠范.电解法制备棒状金纳米粒子溶胶[J].物理化学学报,2000,16(10):956-960. |
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| 作者姓名： | 齐航 朱涛 刘忠范 |
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| 作者单位： | Center for Nanoscale Science and Technology,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871 |
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| 基金项目： | 国家自然科学基金资助项目!(29803002,69890222) |
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| 摘 要： | 纳米材料的光学、磁学和电学性质依赖于粒子的尺寸和形状 .因此 ,合成过程中实现纳米粒子形貌的控制非常重要 1,2].金溶胶在紫外-可见-近红外区的光吸收行为主要取决于金纳米粒子内部电子集体运动的等离子共振 ,其频率由粒子的尺寸所决定 .由于棒状金纳米粒子有横截直径与长度两个特征尺寸 .与大小同其横截直径相当的球形粒子相比 ,棒状粒子除了在 520 nm附近的吸收之外 (横截峰 ,SPt),还在长波方向有一个吸收峰 (长轴峰 ,SPl),其位置随"长径比"的增加而显著红移 3,4].为了深入研究棒状金纳米粒子由尺寸和形状决定的各种特性及其应用 ,W…
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| 关 键 词： | 金 纳米棒 各向异性 制备 |
| 收稿时间： | 2000-01-28 |
| 修稿时间： | 2000-05-08 |
Gold Nanorods Sol Prepared by Electrolysis |
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| Qi Hang,Zhu Tao,Liu Zhongfan.Gold Nanorods Sol Prepared by Electrolysis[J].Acta Physico-Chimica Sinica,2000,16(10):956-960. |
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| Authors: | Qi Hang Zhu Tao Liu Zhongfan |
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| Institution: | Center for Nanoscale Science and Technology,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871 |
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| Abstract: | A gold nanorods sol has been prepared by electrolysis of gold with rodlike micelles as the shape-inducing templates.There is evidence that,instead of at the interfacial region of the cathodic surface during electrolysis,the formation of gold nanorods occured in the bulk electrolyzed solution during storage after the electrolysis.The total concentration of nanoparticles in the resulted sol was found to be dependent on the surface state of the Pt cathode,as well as the ultrasonication treatment during elelctrolysis. |
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| Keywords: | Gold Nanorods Anisotropy Preparation |
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